Patent Application
20230156826
Embodiments described herein generally relate to data processing, network communication scenarios, and terrestrial and non-terrestrial network infrastructure involved with satellite-based networking, such as with the use of low earth orbit satellite deployments.
In the drawings, which are not necessarily drawn to scale, like numerals may describe similar components in different views. Like numerals having different letter suffixes may represent different instances of similar components. Some embodiments are illustrated by way of example, and not limitation, in the figures of the accompanying drawings in which:
using command templates, according to an example;
The following disclosure addresses various aspects of connectivity and edge computing, relevant in a non-terrestrial network (e.g., low earth orbit (LEO), medium earth orbit (MBO) or intermediate circular orbit (ICO), or very low earth orbit (VLEO) satellite constellation) network. In various sets of examples, this is provided through new approaches to terrestrial- and satellite-enabled edge architectures, edge connectors for satellite architectures, quality of service management for satellite-based edges, satellite-based geofencing schemes, content caching architectures, Internet-of-Things (IoT) sensor and device architectures connected to satellite-based edge deployments, orchestration operations in satellite-based edge deployments, among other related improvements and designs.
One of the technical problems addressed herein includes the consideration of edge “Multi-Access” connectivity, involving the many permutations of network connectivity provided among satellites, ground wireless networks, and UEs (including for UEs which have direct satellite network access). For example, scenarios may involve coordination among different types of available satellite-UE connections, whether in the form of non-geostationary satellite systems (NGSO), medium orbit or intermediate circular orbit satellite systems, geostationary satellite systems (GEO), terrestrial networks (e.g., 4G/5G networks), and direct UE Access, considering propagation delays, frequency interference, exclusion zones, satellite beam landing rights, and capability of ground (or in-orbit) routing protocols, among other issues. Likewise, such scenarios also involve the consideration of multi-access satellite connectivity when performing discovery and routing, including how to route data in multi-satellite links based on service level objectives (SLOs), security, regulations, and the like.
Another technical problem addressed herein includes coordination between edge compute capabilities offered at non-terrestrial (satellite vehicle) and terrestrial (base station, core network) locations. From a simple perspective, this may include a determination of whether compute operations should be performed, for example, on the ground, on-board a satellite, or at connected user equipment devices, at a base station, at a satellite-connected cloud or core network, or at remote locations. Compute operations could range from establishing the entire network routing paths among terrestrial and non-terrestrial network nodes (involving almost every node in the network infrastructure) to performing individual edge or node updates (that could involve just one node or satellite).
To perform this determination, a system may evaluate what type of operation is to be performed and where to perform the compute operations or to obtain data, considering intermittent or interrupted satellite connectivity, movement and variable beam footprints of individual satellite vehicles and the. satellite constellation, satellite interference or exclusion areas, limited. transmission throughput, latency, cost, legal or geographic restrictions, service level agreement (SLA) requirements, security, and other factors. As used herein, reference to an “exclusion zone” or “exclusion area” may include restrictions for satellite broadcasts or usage, such as defined in standards promulgated by Alliance for Telecommunications Industry Solutions (ATIS) or other standards bodies or jurisdictions.
A related technical problem addressed herein includes orchestration and quality of service for satellite connections and edge compute operations offered via such satellite connections. In particular, based on the latency, throughput capabilities and requirements, type of data, and cost considerations for satellite connections, services can be orchestrated and guaranteed for reliability, while applying different considerations and priorities applicable for cloud service providers (providing best-effort services) versus telecommunication companies/communication service providers (providing guaranteed services). The evaluation of such factors may include considerations of risks, use cases for an as-available service, use cases for satellite networks as a connectivity “bent pipe”, conditions or restrictions on how and when can data be accessed and processed, different types of backhaul available via satellite data communications, and further aspects of taxes, privacy, and security occurring for multi-jurisdictional satellite data communications.
Another technical problem addressed herein is directed adaptation of edge compute and data services in satellite connectivity environments. One aspect of this includes the implementation of software defined network (SDN) and virtual radio access network (RAN) concepts including terrestrial and non-terrestrial network nodes connected to orbiting satellite constellations. Another aspect is how to coordinate data processing with IoT architectures inclusive of sensors that monitor environmental telemetry within terrestrial boundaries (e.g., ship containers, drones) with intermittent connectivity (e.g., last known status, connections via drones in remote locations, etc.). Other aspects relating to content data networking (CDN), geofencing and geographic restrictions, service orchestration, connectivity and data handover, communication paths and routing, and security and privacy considerations, are also addressed in various use cases.
In various sets of examples, satellite connectivity and coordination is provided through new approaches to terrestrial and satellite enabled edge architectures, including the use of “edge connectors” and connection logic within a computing system. Such edge connectors are used to assemble and organize communication streams via a satellite network, and establish virtual channels to edge compute or remote service locations despite the intermittent and unpredictable nature of LEO satellite network connections.
In further examples, satellite connectivity and coordination is provided through quality of service and orchestration management operations in satellite-based or satellite-assisted edge computing deployments. Such management operations may consider the varying types of latency needed for network backhaul via a satellite network and the varying conditions of congestion and resource usage. These management operations may allow an effective merger of ground-based and satellite-based edge computing operations and all of the resource properties associated with a relevant network or computing service.
In further examples, connectivity and workload coordination is provided for satellite-based edge computing nodes and terrestrial-based edge computing nodes that provide content to end users (such as from a content delivery network (CDN)). This connectivity and workload coordination may use. content caching architectures adapted for satellite communications, to decrease latency and increase efficiency of content retrieval and delivery. Such connectivity and workload coordination may also use satellite-based geofencing schemes in order to ensure compliance with content provider or geo-political regulations and requirements (often, defined on the basis of geographic areas).
In further examples, aspects of coordinating satellite connectivity and edge computing operations are provided through a handover system for compute and data services, providing the transition of service data and services within satellite vehicles. This handover system enables service continuity and coordination within a variety of satellite communication settings.
Additionally, in further examples, various aspects of discovery and routing are implemented among satellite and terrestrial links. With the use of name-based addressing in a named data network (NDN) environment, a satellite connectivity system may be configured to perform workload functions, retrieve data, and handoff from node to node. This satellite connectivity system may be configured to perform discovery as well as select the best node/path for performing the service (routing and forwarding).
Overview of Satellite Connectivity
The constellation 100 includes individual SVs 101,102 (and numerous other SVs not shown), and uses multiple SVs to provide communications coverage to a geographic area on earth. The constellation 100 may also coordinate with other satellite constellations (not shown), and with terrestrial-based networks, to selectively provide connectivity and services for individual devices (user equipment) or terrestrial network systems (network equipment).
In this example, the satellite constellation 100 is connected via a. satellite link 170 to a backhaul network 160, which is in turn connected to a 5G core network 140. The 5G core network 140 is used to support 5G communication operations with the satellite network and at a terrestrial 5G radio access network (RAN) 130. For instance, the 5G core network 140 may be located in a remote location, and use the satellite constellation 100 as the exclusive mechanism to reach wide area networks and the Internet. In other scenarios, the 5G core network 140 may use the satellite constellation 100 as a redundant link to access the wide area networks and the Internet; in still other scenarios, the 5G core network 140 may use the satellite constellation 100 as an alternate path to access the wide area networks and the Internet (e.g., to communicate with networks on other continents).
Other permutations (not shown) may involve a direct connection of the 5G RAN 130 to the satellite constellation 100 (e.g., with the 5G core network 140 accessible over a satellite link); coordination with other wired (e.g., fiber), laser or optical, and wireless links and backhaul; multi-access radios among the UE, the RAN, and other UEs; and other permutations of terrestrial and non-terrestrial connectivity. Satellite network connections may be coordinated with 5G network equipment and user equipment based on satellite orbit coverage, available network services and equipment, cost and security, and geographic or geopolitical considerations, and the like. With these basic entities in mind, and with the changing compositions of mobile users and in-orbit satellites, the following techniques describe ways in which terrestrial and satellite networks can be extended for various edge computing scenarios.
However, one of the limitations that current edge compute architectures experience is that these architectures rely on the network infrastructure owned by communication service providers or neutral carriers. Therefore, if a particular provider wants to provide a new service into a particular location, it has to agree with operators in order to provide the required connectivity to the location where the service is hosted (service provider owned or provided by the communications service provider). On the other hand, in many cases, such as rural edge, or emerging economies, infrastructure is not yet established. In order to overcome this limitation, several companies (tier 1 and beyond) are looking at satellite connectivity in order to remove these limitations.
Multiple constellation of satellites that act as different organizations have a significant need to work together, share resources, and offer features such as geographic exclusion zones, quality of service (QoS), and low-latency content and service delivery. In this context, reliability, QoS, resource sharing, and restrictions such as exclusion zones provide significant inter-related concerns which are addressed by the following edge computing architectures and processing approaches.
In the architecture of
One of the main challenges of any type of edge compute architecture is how to overcome the higher latencies that appear when services require connectivity to the backhaul of the network. This problem becomes more challenging when there are multiple type of backhaul connections (e.g., to different data centers in the cloud 240B) with different properties or levels of congestion. These and other types of complex scenarios are addressed among the following operations.
At the access point 311, various edge computing services 312 may be provided based on an edge computing architecture 320, such as that included within a server or compute node. This edge computing architecture 320 may include: UPF/vRAN functions; one or more Edge Servers configured to provide CDN, Services, Applications, and other use cases; and a Satellite Connector (hosted in the edge computing architecture 320). This architecture 320 may be connected by a high speed switching fabric. Additional details on the use of a Satellite Connector and coordination of edge compute and connectivity operations for satellite settings is discussed below.
In an example, 5G connectivity is provided in the geosynchronous satellite communication scenario using a distributed UPF (e.g., connected via the satellite) or a standalone core (e.g., located at a satellite-connected hub/ground station 515) or directly at the edge appliance 513. In any case, edge compute processing may be performed and distributed among the edge appliance 513, the ground station 515, or a connected data center 516.
As an example, in some LEO settings, one 5G LEO satellite can cover a 500 KM radius for 8 minutes, every 12 hours. Connectivity latency to LEO satellites may be as small as one millisecond. Further, connectivity between the satellite constellation and the device 614 or the base station 612 depends on the number and capability of satellite ground stations. In this example, the satellite 601 communicates with a ground station 618 which may host edge computing processing capabilities. The ground station 618 in turn may be connected to a data center 616 for additional processing. With the low latency offered by 5G communications, data processing, compute, and storage may be located at any number of locations (at edge, in satellite, on ground, at core network, at low-latency data center).
Although not shown in
Satellite Network Coverage and Coverage Identification
One of the general challenges in satellite architectures is how and where to deploy compute and all the required changes in the overall architecture. The present approaches address many aspects on where the compute can be placed and how to combine and merge satellite-based technologies with edge computing in a unique way. Here, the goal is to embrace the potential of “anywhere” compute (whether from the device, to edge, to satellite to the ground station).
The placement and coordination of edge computing with satellites is made much more complex due to the fact that satellites are going to be orbiting in constellations. This leads to two significant challenges: first, depending on the altitude and on the density of a constellation, the time that an edge location is covered is going to vary. Similarly, latency and bandwidth may change over time. Second, satellite-containing compute nodes themselves are going to be in orbit and moving around. The use of an in-motion edge computing location, which is only accessible from a geographic location at different times, needs to be considered.
edge processing. As shown, a terrestrial-based, satellite enabled EDGE ground station (satellite nodeB, sNB) 920 obtains coverage from a satellite constellation 900, and downloads a data set 930. The constellation 900 may coordinate operations to handoff the download using inter-satellite links (such as in a scenario where the data set 930 is streamed, or cannot be fully downloaded before the satellite footprint moves).
The satellite download 925 is provided to the sNB 920 for processing, such as with a cloud upload 915 to a server 910 (e.g., a CDN located at or near the sNB 920). Accordingly, once downloaded to the sNB 920 (and uploaded to the server 910), the user devices located within the terrestrial coverage area (e.g., 5G coverage area) of the sNB 920 now may access the data from the server 910.
satellite is used as a “bent pipe” between edge processing locations, Here, the term “bent pipe” refers to the use of a satellite or satellite constellation as a connection relay, to simply communicate data from one terrestrial location to another terrestrial location. As shown in this figure, a satellite 1000 in a constellation has an orbital path, moving from position 1001A to 1001B, providing separate coverage areas 1002 and 1003 for connectivity at respective times.
Here, when a satellite-enabled edge computing node 1031 (sNB) is in the coverage area 1002, it obtains connectivity via the satellite 1000 (at position 1001A), to communicate with a wider area network. Additionally, this edge computing node sNB 1031 may be located at an edge ground station 1020 which is also in further communication with a data center 1010A, for performing computing operations at a terrestrial location.
Likewise, when a satellite-enabled edge computing node 1032 (sNB) is in the coverage area 1003, it obtains connectivity via the satellite 1000 (at position 1001B), to communicate with a wider area network. Again, computing operations (e.g., services, applications, etc.) are processed at a terrestrial location such as edge ground station 1030 and data center 1010B.
Specifically, at the satellite vehicle, edge computing hardware 1021 is located to process computing or data requests received from the ground station sNBs 1031, 1032 in the coverage areas 1002, 1003. This may have the benefit of removing the communication latency involved with another location at the wide area network. However, due to processing and storage constraints, the amount of computation power may be limited at the satellite 1000 and thus some requests or operations may be moved to the ground stations 1031, 1032.
As will be understood, edge computing and edge network connectivity may include various aspects of RAN and software defined networking processing. Specifically, in many of these scenarios, wireless termination may be moved between ground and satellite, depending on available processing resources. Further, in these scenarios, URLCC (ultra-reliable low latency connections) processing may be performed on ground or in payload using packet processing approaches, including with the packet processing templates further discussed herein, and with and vRAN-DU (distributed unit) processing and acceleration.
Additional scenarios for network processing are depicted among
The satellite edge equipment 1120A depicts a configuration of an example platform configured to provide connectivity and edge processing for satellite connectivity. This equipment 1120A specifically includes an RF phased array antenna 1121, memory 1122, processor 1123, network interface (e.g., supporting Ethernet/Wi-F) 1124, GPS 1125, antenna steering motor 1126, and power components 1127. Other configurations and computer architectures of equipment 1120A for edge processing are further discussed herein.
In further examples, the satellite and ground connectivity networks identified above may be adapted for Satellite and 5G Ground Station Optimization using various artificial intelligence Al)(processing techniques. In an example, infrastructure optimization related to terrestrial 5G pole placement for optimum performance (uplink, downlink, latency) and satellite constellation coexistence may be analyzed to support improved network coverage.
Some satellite constellations may have limited ground stations and thus satellite connectivity latency may be impacted if not located line-of-sight with devices on the ground. As a result, service providers are expected to optimize their network for 5G pole placement to avoid interferences caused by weather. Satellite images can be used as an inference input to an AI engine, allowing a service provider to determine optimum routing and 5G pole placement, leveraging factors such as geographic location, demand, latency, uplink, downlink requirements, forward looking weather outlook, among other considerations.
Satellite Coverage Coordination
The following techniques may be used to obtain a satellite coverage footprint for LEO satellite network connectivity. A coverage footprint may be used for purposes of determining when satellite connectivity is available to a particular location (e.g., at a UE or a satellite-backhaul base station), as well as coordination of edge computing operations among terrestrial and non-terrestrial locations.
Two main challenges are encountered when considering satellite coverage from LEOs. First, depending on the altitude and on the density of a constellation, the time that a particular edge location is covered with network access (and compute access) is going to vary. Latency and bandwidth of a satellite connection also may change over time. Second, satellites which host compute resources are going to be constantly moving around and coordinating compute with other satellites and ground systems. Hence, the location and coverage capabilities of a satellite edge computing node is an important consideration that needs to be constantly considered.
The following provides a command mechanism to identify satellite coverage and positions of individual SVs, for purposes of coordinating with SVs for executing edge computing workloads or obtaining content. With this coverage and position information, individual edge endpoint devices can plan or adjust operations to maximize use of LEO connectivity.
In an example, a command may be defined with a connectivity service to Get Satellite Vehicle future (fly-over) positions relative to a ground location. This may be provided by a “Get SV Footprint” command offered by the network or service provider. In the following, Ground (GND) references may correspond to Ground Station Edge, Telemetry Tracking, UE or IoT Sensor locations. The following parameters may be supplied for this example “Get SV” Footprint command:
For instance, the “direction” properties may be used to obtain fly-over telemetry
Also for example, a response to this “Get SV” Footprint command may be defined to provide a response to the requester with the following information:
It will be understood that the availability properties may extend to information about available frequencies and inter satellite links for routing decisions, including for decisions that involve the edge computing locations accessible on-satellite, via a bent-pipe connection, or both.
At operation 1220, a response is obtained which indicates the future fly-over positions of the satellite vehicle, relative to the ground location. For instance, the “Get SV” Footprint command and responses noted above may be. used.
Based on this footprint information, operation 1230 may be performed to identify the network coverage, and coverage changes, relative to the ground location. Edge computing operations may be adjusted or optimized, at operation 1240, based on the identified network coverage and coverage changes.
Further variation of this method and similar methods is provided by the following examples.
Example A1 is a method for determining satellite network coverage from a low earth orbit (LEO) satellite system, performed by a terrestrial computing device, comprising: obtaining the satellite coverage data for a latitude and longitude of a terrestrial area, the satellite coverage data including an indication of time and intensity of an expected beam footprint at the terrestrial area; identifying, based on the satellite coverage data, satellite coverage for connectivity with a satellite network using the LEO satellite system; adjusting edge computing operations at the terrestrial computing device, based on the satellite coverage data.
In Example A2, the subject matter of Example A1 optionally includes subject matter where the satellite coverage data includes an identification of the latitude, longitude, and altitude, used for satellite reception at the terrestrial area.
In Example A3, the subject matter of Example A2 optionally includes subject matter where the satellite coverage data further includes a radius for the expected beam footprint, a time for an expected beam footprint at the altitude, and a minimum intensity for the expected beam footprint at the altitude.
In Example A4, the subject matter of any one or more of Examples A1-A3 optionally include subject matter where the satellite coverage data further includes a center latitude point of the expected beam footprint, and a center longitude of the expected beam footprint.
In Example A5, the subject matter of any one or more of Examples A1-A4 optionally include subject matter where the satellite coverage data includes an identifier of a satellite vehicle or satellite constellation.
In Example A6, the subject matter of any one or more of Examples A1-A5 optionally include subject matter where a request for the satellite coverage data includes an amount of time needed to perform communication operations via the satellite network, and the satellite coverage data includes an amount of time available to perform the communication operations via the satellite network.
In Example A7, the subject matter of Example A6 optionally includes subject matter where the satellite coverage data includes an identifier and name of a satellite vehicle or satellite constellation to perform the communication operations via the satellite network.
In Example A5, the subject matter of any one or more of Examples A1-A7 optionally include subject matter where adjusting the edge computing operations comprises performing operations locally at a terrestrial edge computing location.
In Example A9, the subject matter of any one or more of Examples A1-A5 optionally include subject matter where adjusting the edge computing operations comprises offloading compute operations from a terrestrial computing location to a location accessible via the satellite network.
In Example A10, the subject matter of Example A9 optionally includes subject matter where the location accessible via the satellite network comprises an edge computing node located within at least one of: a satellite vehicle indicated by the satellite coverage data, a satellite constellation connectable via a connection indicated by the satellite coverage data, or a ground edge processing location connectable via a connection indicated by the satellite coverage data.
In Example A11, the subject matter of any one or more of Examples A9-A10 optionally include subject matter where the location accessible via the satellite network comprises a cloud computing system accessible via a backhaul of the satellite network.
In Example A12, the subject matter of any one or more of Examples A1-A11 optionally include subject matter where adjusting the edge computing operations comprises offloading data content operations from a terrestrial computing location to a data content store location accessible via the satellite network.
In Example A13, the subject matter of any one or more of Examples A1-A12 optionally include subject matter where adjusting edge computing operations at the terrestrial computing device, is further based on latency and service information calculated based on the satellite coverage data.
In Example A14, the subject matter of any one or more of Examples A1-A13 optionally include subject matter where obtaining the satellite coverage data comprises transmitting, to a service provider, a request for satellite coverage data, for satellite coverage to occur at the latitude and longitude of the terrestrial area.
In Example A15, the subject matter of any one or more of Examples A1-A14 optionally include subject matter where adjusting edge computing operations comprises performing compute and routing decision calculations based on information indicating: available satellite network communication frequencies, inter-satellite links, available satellite network communication intensity.
Connector Computing Architecture for Satellite Network Connections
As discussed above with reference to
One of the main challenges of such terrestrial-satellite architectures is how to overcome the higher latencies that appear when services require connectivity to the backhaul of the network. This problem becomes more challenging when there are multiple type of backhaul connections (e.g., to different data centers) with different properties or levels of congestion, and associated resource sharing (e.g., bandwidth) limitations provided by such connections. Likewise, this problem becomes more challenging given the small amount of time that a particular SV will be in communication range to perform compute operations or complete a data transfer with a source location.
The following approach provides a “satellite-edge connector” mechanism for implementation within an edge computing node, appliance, device, or other computing platform. With this mechanism, a telemetry and connection status is obtained from the satellite or satellite constellation that has connectivity to a particular edge compute location, cloud, or data center, and this status information is utilized to implement smarter network traffic shaping from the originating platform. In an example, a satellite-edge connector may be implemented by extending a network platform module (e.g., a discrete or integrated platform/package) that is responsible to handle communications for the edge services. This may be provided at the base station, access point, gateway, or aggregation point which provides a network platform as an intermediary between the end point device (e.g., a UE) and the satellite network. For instance, a network platform module at the intermediary may be also adapted to dynamically handle QoS and bandwidth associated to the various data streams—mapped into the different services—depending on the backhaul connectivity state available from the satellite to the various end points.
Additionally, in various edge computing settings, each tenant or group of tenants may apply (or require) different security, QoS, and data dynamic privacy policies, including policies that are dependent on geographic locations of the tenant or the communication and computing hardware. In such settings, an edge computing platform May automatically configure itself with such policies based on involved geographic locations, particularly when coordinating communications through transient LEO satellite networks. Further, each tenant or group of tenants may apply rules that determine how and when specific QoS, security, and data policies will be used for specific compute tasks or communicated data.
In this setting, using telemetry from the satellite 1330 (or satellite constellation) and a quality of service attached to each SVC, the network logic can dynamically move bandwidth between different EPVCs. The network logic can also provide active feedback into the software stack and apply platform QoS, such as to throttle back services mapped into an EPVC where constrained. bandwidth or other conditions (e.g., power, memory, etc.) exist at the edge base station 1320, the satellite 1330, or one of the clouds 1340A, 1340B. Such network logic may be implemented at the base station 1320 using the following architectural configuration.
In both architecture arrangements,
In an example, the connector module 1461, 1462 is exposed to the software stack and provides a similar interface as a Network Interface Card, and may include semantics to put and get data from an end point (e.g., the next tier of the service hosted in a data center after the satellite, such as corresponding to clouds 1340A, 1340B). The connector module 1461, 1462. includes logical elements in order to understand how local streams are mapped into one or multiple end point connectors after the satellite, and monitor how the connections between the satellites and end point connectors are performing over time and how their connectivity affects how much bandwidth streams can effectively achieve. This may be achieved by utilizing telemetry information that a satellite will be providing to the logic. Additional information on the connector module is provided in
Additionally, the connector module 1461, 1462 may apply quality of service (QoS) policies to streams that share connections to the same end points with different levels of QoS agreements (e.g., with connections shared among different tenants). The connector module 1461, 1462 may also apply bandwidth load balancing to the satellite communication between different streams mapped into different end points when backhaul changes apply. Further, the connector module 1461, 1462 may scale down resources to those services which are network bound when the telemetry from the satellite indicates that the services will not be capable to achieve the desired performance.
At a terrestrial station (e.g., at the edge base station 1320), current or prospective streams are identified at operation 1510 and grouped into virtual channels (VCs) at operation 1520, such as by using a hierarchical VC definition. Each end point is mapped into a satellite end point virtual channel (EPVC) based on the end point of the data stream. One or more service streams that target a particular end point are mapped into a satellite end point VC (e.g., Cloud A 1340). Each of the service streams is mapped into a particular stream virtual channel (SVC) within that satellite EPVC, at operation 1530. Thus, one EPVC can contain multiple SVCS; and each SVC is mapped into multiple services while also being mapped to a tenant that has an associated EPVC.
Using telemetry from the satellite and quality of service attached to each SVC, at operation 1540, the network logic dynamically will move bandwidth between different EPVCs. Additionally, at operation 1550, the network logic will provide active feedback into the software stack and will apply platform QoS in order to throttle back or adapt services mapped into a EPVC, where constrained bandwidth is present (e.g., by adapting power, memory, or other resources).
The internal architecture of 1610 is applicable to an end-to-end system with LEO satellites in place, connected to a ground-located edge appliance. Assuming that the ground-located edge appliance does not have full connectivity and high bandwidth connections all the time (e.g., due to a remote location), the following provides a beneficial approach to coordinate the satellite backhaul data transfers and processing actions that need to happen.
In an example, the use of the connector module 1610 enables data transfers to be coordinated a) between the satellites forming a cluster/coalition/constellation (e.g., to minimize data transfer needed, including to only send summary information or to prevent data transfer duplicates when appropriate), and b) between a cluster of satellites and the ground stations (e.g., to determine when and which satellites communicates what data, and to enable handoff to a next ground station). Planning and coordination is key for such transfers—not only for data management, resource allocation, and management, but also from a processing order standpoint.
For instance, in a logistics use case, consider a system that. is coordinated from a ground control system and a satellite connectivity network to determine a joint plan for movement and tracking of some physical resource, such tracking movement of cargo ships on an ocean. Here, coordination involves identifying a) the relevant area for satellite connectivity (e.g., based on the geographic positioning of the cargo ships), b) what kind of processing is needed via the satellite system (e.g., image processing to detect the number of cargo ships), and c) how much bandwidth, resources, or processing is required to send a data result. back via the satellite connectivity (e.g., to return just. the number of cargo ships identified in the image data, and not all images).
As will be understood, a variety of conventional network deployments consider quality of service and service level agreements. However, existing approaches are not capable to fully respond to satellite system architectures and the connectivity considerations involved with such architectures. Furthermore, the concept of backhaul connectivity through a satellite network is not considered as part of existing architectures. As a result, the currently disclosed approaches provide end to end QoS adaptive policies for Satellite Edge and do provide resource allocation based on mobility and multi satellite telemetry.
With reference to the connector module architecture of
The stream configuration logic 1611 also provides interfaces to the system software stack in order to map the various stream's identifier (which can come in a form of a Process Address Space Identifier (PASID), application/service represented by a PASID+Tenant identifier, or any similar type of process or service identification) to the corresponding EPVC and SVC. In an example, the logic 1611 also allows a system to provide or obtain: an ID of the services; an identification of the EPVC and SVC associated to the PASID (noting that various streams may share same SVC); and identification of latency and bandwidth requirements associated to the stream. Further discussion of these properties and streams are provided below with reference to
Using telemetry from the satellite and quality of service attached to each SVC, the network logic (e.g., logic 1612-1615, in coordination with satellite communication logic 1616) dynamically moves bandwidth between different EPVCs, provides active feedback into the software stack via a platform RDT, and applies platform QoS in order to throttle back services mapped into a EPVC, such as where constrained bandwidth exists (e.g., power, memory etc.). Such logic may operate in addition to existing forms of satellite communication logic 1618 and a platform resource director technology 1619.
At an edge connector of satellite edge 1620, satellite-side capabilities may be coordinated to compliment the operations at the ground edge 1610. Similarly, the logic implemented at the satellite edge 1620 allows a satellite system to create an SVC with a particular bandwidth and latency requirements.
At the satellite edge 1620, various components can be tied into the EPVC and SVC to implement the E2E policies indicated by the ground edge 1610. Such satellite capabilities may include, end to end QoS SVC mapping 1621, predictive route and QoS allocation planning 1622, end to end future resource reservation policies 1623 (supporting both local (satellite) and ground policies), telemetry processing 1624 (supporting local (satellite) telemetry, ground telemetry, and peer forwarded telemetry), and terrestrial edge zones and up and down link agreement processing 1625.
At operation 1810, data streams are mapped to an end point and a virtual channel, using an identification mapped to a tenant. In an example, this is performed by logic 1614 and 1615. The endpoint (EP) telemetry logic 1614 and endpoint (EP) projection logic 1615 are responsible to track and predict (e.g., using LSTM neural networks) how the connectivity from the satellite to the end points changes over the period of time. With this mapping, information is collected for requirements associated with the data streams at operation 1810 and telemetry associated with the data streams 1820. For instance, this logic may collect a data set 1730 that tracks the EPVC, last known bandwidth, and last known latency. Such logic exposes a new interface to the satellite which allows consideration of current latency and bandwidth available to each of the end points.
In an example, the telemetry provided by the two aforementioned components will be provided to the SVC and EPIC load balancing QoS logics as follows:
(1) At operation 1840, the SVC QoS load balancing logic 1612 is used to apply QoS and resource balancing across all the streams mapped into a particular SVC depending on their QoS requirements. In response to a change of the SVC allocated logic, this logic will be responsible to distribute the existing bandwidth to the different streams depending on their requirements (e.g, distribute bandwidth depending on the priority).
(2) At operation 1850, the EPVC QoS Load balancing logic 1613 is used to manage bandwidth connectivity between the platform and the satellite depending on the current or predicted available bandwidth to each of the end points. Each EPVC will have associated a given priority. Bandwidth to the satellite will be divided among EPVC proportionally to the priority. if a particular end point has less available bandwidth than the once associated to its corresponding EPVC, the bandwidth will be divided among the other EPVC using the same priority criteria. On a change (increase or reduce) of a bandwidth to a particular end point, the EPVC associated bandwidth will be changed proportionally depending on the priority of that particular end point. The increased or reduced bandwidth will be provided to the other EPVC as stated above, The logic also may proactively provide some more bandwidth to an EPVC, using prediction logic identifies that in a coming future there will be less bandwidth available for a particular EP. Hence each EPVC may have a global quota (based on the priority) which may be consumed ahead based on prediction.
As will be understood, an EPVC that is established from end-to-end may be re-routed to perform load balancing. For instance, suppose that an EPVC. involves Edge1→Sat1→Sat2→Sat3→Ground is mapped into EPVCx; but, based on the QoS required, Sat 2 does not provide enough bandwidth. In response, the system may remap EPVCx to Sat1→SatX→Sat→Ground,
(3) At operation 1860, the SVC QoS load balancing logic 1612 may provide telemetry to the platform resource director logic 1619 (e.g., implemented with a resource director technology) in order to increase or reduce the resources associated to a particular SVC depending on the allocated bandwidth. The logic may identify bandwidth to fulfill required resources to a particular identifier (e.g., PASID) using rules (e.g., mapping a PASID ID; List of Bandwidth {BW1, . . . BWn} with the corresponding needed resources (Memory, CPU, Power, etc.)).
Further variation of this method and similar methods is provided by the following examples.
Example B1 is a method for establishing managed data stream connections using a satellite communications network, performed at a computing system, comprising: identifying multiple data streams to be conducted between the computing system and multiple end points via the satellite communications network; grouping sets of the multiple data streams into end point virtual channels (EPVCs), the grouping based on a respective end point of the multiple end points; mapping respective data streams of the EPVCs into stream virtual channels (SVCs), based on a type of service involved with the respective data streams; identify changes to the respective data streams, based on service requirements and telemetry associated with the respective data streams of the EPVCs; and implementing the changes to the respective data streams, based on a type of service involved with the respective data streams.
In Example B2, the subject matter of Example B1 optionally include subject matter where the service requirements include Quality of Service (QoS) requirements.
In Example B3, the subject matter of any one or more of Examples B1-B2 optionally include subject matter where the service requirements include compliance with at least one service level agreement (SLA).
In Example B4, the subject matter of any one or more of Examples B 1-B3 optionally include subject matter where the multiple end points comprise respective cloud data processing systems accessible via the satellite communications network.
In Example B5, the subject matter of any one or more of Examples B1-B4 optionally include subject matter where the telemetry includes latency information identifiable based on the EPVCs and the SVCs.
In Example B6, the subject matter of any one or more of Examples B 1-B5 optionally include subject matter where identifying the changes to the respective data streams is based on connectivity conditions associated with the satellite communications network.
In Example 37, the subject matter of any one or more of Examples B1-B6 optionally include subject matter where the changes to the respective data streams are provided from changes to at least one of: latency, bandwidth, service capabilities, power conditions, resource availability, load balancing, or security features.
In Example B8, the subject matter of any one or more of Examples B1-B7 optionally include the method further comprising: collecting the service requirements associated with the respective data streams; and collecting the telemetry associated with the respective data streams.
In Example B9, the subject matter of any one or more of Examples B1-B8 optionally include subject matter where the changes to the respective data streams includes including moving at least one of the SVCs from a first EPVC to a second EPVC, to change use of at least one service from a first end point to a second end point.
In Example B10, the subject matter of any one or more of Examples B1-B9 optionally include subject matter where implementing the changes to the respective data streams comprises applying QoS and resource balancing across the respective data streams.
In Example B11, the subject matter of any one or more of Examples B1-B10 optionally include subject matter where implementing the changes to the respective data streams comprises applying load balancing to manage bandwidth across the respective data streams.
In Example B12, the subject matter of any one or more of Examples B1-B11 optionally include the method further comprising: providing feedback into a software stack of the computing system, in response to identifying the changes to the respective data streams.
In Example B13, the subject matter of Example B12 optionally includes the method further comprising: adjusting usage of at least one resource associated with a corresponding service, within the software stack, based on the feedback.
In Example B14, the subject matter of any one or more of Examples B1-B13 optionally include subject matter where the mapping of the respective data streams of the EPVCs into the SVCs is further based on identification of a tenant associated with the respective data streams.
In Example B15, the subject matter of Example B14 optionally includes the method further comprising: increasing or reducing resources associated with at least one SVC, based on the identification.
In Example B16, the subject matter of any one or more of Examples B1-B15 optionally include subject matter where the respective data streams are established between client devices and the multiple end points, to retrieve content from among the multiple end points.
In Example B17, the subject matter of Example B16 optionally includes subject matter where the computing system provides a content delivery service, and wherein the content is retrieved from among the multiple end points using the satellite communication network in response to a cache miss at the content delivery service.
In Example B18, the subject matter of any one or more of Examples B1-B17 optionally include subject matter where the respective data streams are established between client devices and the multiple end points, to perform computing operations at the multiple end points.
In Example B19, the subject matter of Example B18 optionally includes subject matter where the computing system is further configured to provide a radio access network (RAN) to the client devices with virtual network functions.
In Example B20, the subject matter of Example B19 optionally includes subject matter where the radio access network is provided according to standards from a 3GPP 5G standards family.
In Example B21, the subject matter of any one or more of Examples B19-B20 optionally include subject matter where the radio access network is provided according to standards from a O-RAN alliance standards family.
In Example B22, the subject matter of any one or more of Examples B19-B21 optionally include subject matter where the computing system is hosted in a base station for the RAN.
In Example B23, the subject matter of any one or more of Examples B1-B22 optionally include subject matter where the satellite communication network is a low earth orbit (LEO) satellite communication network comprising a plurality of satellites in at least one constellation.
In Example B24, the subject matter of any one or more of Examples B1-B23 optionally include subject matter where the satellite communication network is used as a backhaul network between the computing system and the multiple end points.
In Example B25, the subject matter of any one or more of Examples B1-B24 optionally include subject matter where the computing system comprises a base station, access point, gateway, or aggregation point which provides a network platform as an intermediary between a client device and the satellite communication network to access the multiple end points.
Satellite Network Cache and Storage Processing
With use of satellite communications, a number of important challenges are also present: (1) How to overcome higher latencies and low bandwidth that appear when edge computing services require connectivity to the backhaul of the network (2) How to implement geofencing data policies for data being sent (and received) among edge devices, satellites, and end points and (3) How to implement end to end quality of service policies at the constellation of satellites which are moving, while considering exclusion zones, geofencing, and varying types of telemetry (from satellite peers in the constellation, from local processing systems, and from ground actors).
These issues becomes even more challenging when there are multiple type of backhaul connections (e.g., to different data centers) with different properties, levels of congestion, edge base stations connecting to the satellite moving, policy or service provider restrictions on content and services, among other considerations. Additionally, as new ways are developed to store data in moving edge systems, the use of exclusion zones and other intrinsic properties of satellites will require new approaches in the form of rules, policies, interfaces that allow moving edge systems to implement autonomous, low latency and dynamic data transformation and eviction depending on those approaches and meta-data.
One approach which is expected to be used to resolve permission issues in the context of satellite communications, involves the application of geofencing, such as to make certain services or data only available (or, to prohibit or block such services or data, or the use of such services or data) based on geographic location. In the context of geofencing, three levels of geofencing may be needed between any of the three entities: end user/content provider, satellite, and content/service provider. Further, geofencing may apply not only with respect to the ground (e.g., what country a satellite is flying over) but as a volumetric field within the area of data transmission. For instance, a particular cube or volume of space may be allocated, reserved, or managed by a particular country or entity.
When considering content delivery via satellite communications, geofencing and restrictions becomes quite challenging due to the amount of data and expected volume of content delivery communications, different levels or service level agreement to deliver such data, the number of content providers, and overall concerns of privacy, security, and data movement across such a dynamic environment. The following offers an approach for caching and content distribution to address these challenges.
(a) Adaptive Satellite content caching from multiple end locations and provided to multiple set of base stations distributed across multiple end locations. This includes QoS policies based on geographical areas, subscribers and data providers managed at the satellite. Furthermore, new type of caching policies at the satellites are provided based on: geo-fencing, satellite peer hints, and terrestrial. data access hits.
(b) Adaptive terrestrial data caching based on satellite data caching hints coming from the satellite. In this case, the satellite provides information to each base station on content to be potentially pre-fetched, such as based on how base stations in the same geo-area are accessing content.
(c) Adaptive terrestrial content flow based on end point bandwidth availability. Here, the goal is to be able to perform adaptive throttling at the base station demanding content depending on the real bandwidth availability between the satellite and end content provider (e.g., for content missing on the satellite cache).
(d) Data geo-fencing applied with two levels of fencing: (1) depending on the geolocation of target terrestrial data consumer and producers; and (2) depending on the x-y-z location of the satellite (assuming that not all the locations can be allowed). Data at the satellite may be tagged with geofencing locations used as part of the hit and miss policies. Data may also be mapped to dynamic security and data privacy policies determined for tenants, groups of tenants, service providers, and other participating entities.
As shown in
In addition to the use of a connector module (e.g., Satellite 5G backhaul card 2061, 2062), the architectures may integrate the use of accelerated caching terrestrial logic component 2051. In an example, this component implements two-tier caching logic that is responsible to determine how the content has to be cached among the two tiers (terrestrial and satellite tiers). For instance, terrestrial caching logic (e.g., implemented in component 2051) proactively will increase or decrease the amount of content delivery to be pre-fetched based on:
(1) Telemetry from the each of the EPVC bandwidth. Hence, at higher availability of EPVC for a particular content provider, may cause an increase to the amount of pre-fetching. Logic may also utilize prediction data in order to prefetch more content envisioning a situation with higher saturation.
(2) Hints provided by the satellite logic which is capable to analyze requests coming from multiple terrestrial logic. Hints may provide list of hot content tagged with: Geolocation or area where the content is being absorbed; End points or content delivery services attached to the content; or Last time the content was accessed.
In art example, the satellite logic (e.g., implemented in components 2061, 2062) will (a) Proactively cache content from multiple EP content sources, and implement different types of caching policies depending on SLA, data geofencing, expiration of the data etc.; and (b) Proactively send telemetry hints to the terrestrial caching logic 1611, provided as part of a ground edge 1610 depicted in
Data Provider Rules 2121: Each content provider being cached at the satellite edge 2120 will have a certain level of SLA which is translated to the. amount of data being cached for that provider at the satellite. For instance, if the satellite has 100% of caching capacity, 6% may be assigned to a streaming video provider.
Data Provider Geolocation Rules 2122: Provider rules can be expanded. in order to specify different percentage for a given provider if there are different type of end point providers in different geographic locations. Other aspects of data transformation for a provider or geolocation can also be defined.
Terrestrial-based evictions 2123: Each of the base stations providing content to the edge devices will provide the hot content and cold content back to the satellite. Content for A and B becoming cold will be hosted at the satellite for N units more of time and evicted afterwards or replaced by new content (e.g., prefetched content).
Data Sharing between Providers 2124. Different CDN providers may allow sharing content or some content. Each content includes meta-data that. identifies what other content providers are sharing that data.
Satellite Geolocation Policies 2125. Depending on the geolocation of the target, terrestrial data may miss or hit. Each data has a tag that identifies what geolocations can access to that data (list of areas or ALL). If edge base station does not match those requirements, a miss occurs.
Satellite APIs and Data 2126. There are flushing mechanisms provided that allow certain data to be flushed based on geo-location and based on type of content tagging for low latency flushing. Data needs to be tagged with meta-keys (e.g. content provider, tenant, etc.), and a satellite can provide interfaces (APIs) to control availability of this data (e.g., to flush data with certain meta-keys when crossing X geographic area). Data is also geo-tagged as it is generated, which can be implemented as part of the flushing APIs. Additionally, data transformation rules can be applied based on the use of interfaces, such as, if data with meta-data or a geo-tag matches, then automatically apply X (e.g., anonymize the data). This can guarantee no violations for certain areas.
Additionally, data peer satellite hints may be implemented as part of the Policies 2125. Content may be proactively evicted or demoted from hot to warm if there is feedback from satellite peers covering peer geolocations that that content is not hot anymore. Content demoted to warm after X units of time and may be evicted after Y units of time. Content may become hot based on similar feedback from peer satellites.
It will be understood that a CDN cache may incorporate a more complex hit/miss logic that implements different combinations of the previous elements. Additionally, these variations may be considered for other aspects of content delivery, geocaching, and latency-sensitive applications.
The preceding defines a new type of semantics on data storage and delivery on the satellite edges. However, it will be understood that other content storage, caching, and eviction approaches may also be provided for coordination between satellite edges and computing systems.
At operation 2210, content caching is performed at a satellite edge. computing location, involving some aspect of a satellite vehicle, constellation, or non-terrestrial coordinated storage. The interfaces discussed above may be used to define the properties of such caching, restrictions on data caching, geographic details, etc.
At operation 2220, terrestrial data caching is performed, based on satellite data caching hints received from the satellite network. As discussed above, such hints may relate to the relevance or demand of the content, usage or policies at the satellite network, geographic restrictions, and the like.
At operation 2230, a content flow is established between terrestrial and satellite network (and cache storage locations in such network), based on resource availability. Such resource considerations may relate to bandwidth, storage, or content availability, as indicated by hints or predictions.
At operation 2240, one or more geofencing restrictions are identified and applied for particular content. For example, based on geographic locations of a satellite network, data producer, data consumer, and regulations and policies involved with such locations, content may be added, unlocked, restricted, evicted, or controlled according to geographic area.
At operation 2250, the caching location of content may be coordinated between a satellite edge data store and a terrestrial edge data store. Such coordination may be based on geofencing restrictions and rules, content flow, policies, and other considerations discussed above.
Further variation of this method and similar methods is provided by the following examples.
Example C1 is a method for content distribution in a satellite communication network, comprising: caching data at a satellite computing node, the satellite computing node accessible via a satellite communication network; applying restrictions for access to the cached data at the satellite computing node, according to a position of the satellite computing node, a location associated with a source of the data, and a location of a receiver; and receiving, from a terrestrial computing node, a request for the cached data, based on resource availability of the terrestrial computing node, wherein the request for the data is fulfilled based on satisfying the restrictions for access to the cached data.
In Example C2, the subject matter of Example C1 optionally includes subject matter where the terrestrial computing node is configured to perform caching of at least a portion of the data, the method further comprising managing caching of the data between the satellite computing node and the terrestrial computing node.
In Example C3, the subject matter of Example C2 optionally includes subject matter where the caching of the data between the satellite computing node and the terrestrial computing node is performed based on geographic restrictions in the restrictions for the access to the cached data.
In Example C4, the subject matter of any one or more of Examples C2-C3 optionally include subject matter where the caching of the data between the. satellite computing node and the terrestrial computing node is performed based on bandwidth availability at the terrestrial computing node.
In Example C5, the subject matter of any one or more of Examples C2-C4 optionally include subject matter where the caching of the data between the satellite computing node and the terrestrial computing node is performed based. on hints provided from the satellite computing node to the terrestrial computing node.
In Example C6, the subject matter of any one or more of Examples C2-C5 optionally include subject matter where the caching of the data between the satellite computing node and the terrestrial computing node is performed based on bandwidth used by virtual channels established between the terrestrial computing node and another terrestrial computing node using a satellite network connection.
In Example C7, the subject matter of any one or more of Examples C1-C6 optionally include subject matter where the restrictions for access to the data are based on security or data privacy policies determined for: at least one tenant, at least one group of tenants, or at least one service provider associated with the terrestrial computing node.
In Example C8, the subject matter of any one or more of Examples C1-C7 optionally include managing the cached data at the satellite computing node based on policies implemented within a satellite or a satellite constellation that includes the satellite computing node.
In Example C9, the subject matter of Example C8 optionally includes evicting the cached data from the satellite computing node based on at least one of: geographic rules, data provider rules, or satellite network policies.
In Example C10, the subject matter of any one or more of Examples C1-C9 optionally include subject matter where the restrictions for access to the data define a geofence which enables access to the data upon co-location of the satellite computing node and the terrestrial computing node within the geofence.
In Example 11, the subject matter of any one or more of Examples C1-C10 optionally include the subject matter being performed by processing circuitry at the satellite computing node, hosted within a satellite vehicle.
In Example C12, the subject matter of Example C11 optionally includes subject matter where the satellite vehicle is a low earth orbit (LEO) satellite operated as a member of a satellite constellation.
Satellite Connectivity Roaming Architectures
As will be understood, many of the previous scenarios involve the use of multiple LEO satellites, which may result in inter-operator roaming as different satellite constellations move in orbit and into coverage of a user's geographic location. In a similar way that a mobile user today moves from network to network with user equipment and may roam onto other service provider networks, it is expected that satellite constellations will move into and out of position and thus offer the opportunity for users to roam among different service provider networks. In the context of edge computing, such satellite. constellation roaming adds an additional level of complexity, as not only network connectivity but also workloads and content need to be coordinated.
Roaming agreements may follow the pattern currently used where carriers in adjacent regions agree (through legal contract) to route traffic to the peer carrier when a peer network is discovered. The SLA for the user 2320 reflects the contractual arrangements made in advance. This may include alternative rates for similar services provided by the peer carrier. In addition to traditional roaming agreement approaches, LEO satellite roaming may include various forms of load balancing, redundancy and resiliency strategies. Different carriers' satellites may have differing hosting capabilities or optimizations, one for compute, one for storage, one for function acceleration (FaaS), etc. The roaming agreement may detail these differences and rates charged when used in a roaming configuration. The overall value to the user is latency between inter-LEO satellites in close proximity in space means a greater portion of the workload could be completed in space—avoiding a round-trip to a terrestrial Edge hosting node.
In an example, a roaming agreement is established to authorize cross-jurisdictional sharing of Edge resources. This is provided with the use of a User Edge Context (UEC) data structure 2340. The UEC 2340 relates several pieces of context information that helps establish the effective satellite access via roaming agreements that in space may be physically co-located and over any number of countries' air space. Such locations of the satellites may be determined based on space orbit coordinates, such as coordinates A 2350A and coordinates B 2350B.
Space coordinates are determined by three factors: (1) orbital trajectory, (2) elevation from sea-level, (3) velocity. Generally, these three are interrelated. The elevation determines the velocity required to maintain the elevation. Trajectory and velocity determine where the possible points of collision may occur. It is expected that carriers working to establish roaming agreements will select space coordinates that have the same factors then adjust them slightly to create a buffer between them.
In further examples, autonomous inter-satellite navigation technology can be used by each satellite to detect when a roaming peer is near or within the buffer where refinements to the programmed space coordinates are applied dynamically and autonomously. Thus, with use of this framework, inter-satellite roaming activity 2350A may also be tracked and evaluated.
In a further example, a UEC may be configured to capture premium use cases that follow specific SLA considerations, such as for use with Ultra-Reliable Low-Latency Communication (URLLC) SLAs. For instance, a SLA portion of UEC may be adapted to comprehend a priority factor, to define a priority order of available networks. If a UE (device) has line-of-sight connectivity and is allowed to access multiple terrestrial and non-terrestrial networks, a set of predetermined factors can help the UE prioritize which network to select. For instance, a terrestrial telco network where the FE is located may have first priority, then perhaps followed by licensed satellite network options. Some satellite subscribers may pay for premium service, whereas others may just have standard data rate plans connected to their UE. The UE SIM card would have this priority information and work with the UEC on SLA Priority, A similar example may include a premium user who wants the best possible latency and pays for this access in their UE SIM which is connected to their UEC SLA.
The UEC 2340 is depicted as storing information relevant to a user context for edge computing, including user credentials 2431, orchestrator information 2432, SLA information 2433, service level objective (SLC) information 2434, workload information 2435, and user data pool information 2436. In an example, the SLA is tied to roaming agreement information 2437, LEO access information 2438, and LEO billing information 2439.
In a further example, the roaming agreement information 2437 may also include or be associated with a user citizenship context 2441, trade agreement or treaty information 2442, political geo-fence policy information 2443, and taxation information (such as relating to value added tax (VAT) or tariffs) 2444. With an implementation of the UEC 2340, a geo-fence is logically applied such that existing treaties and geopolitical policies can be applied.
The UEC is a data structure 2340 that exists independent of a currently executing workload. Nevertheless, there is a binding phase 2420 that relies on the UEC 2340 to allocate or assign resources in preparation for a particular workload execution.
For instance, consider a scenario where an associated SLA 2433 contains context about tax liability for a given provider network. The roaming agreement provides additional context where an international treaty or agreement may include VAT taxes. The UEC 2340 includes references to applicable geo-fence and VAT contexts so that a roaming agreement between LEO satellites from different provider networks can cooperate to supply a better (highly available) user experience.
In further examples, a UEC can add value within a single provider network. In a single provider network the UEC 2340 may provide additional context for applying geo-fence policies that are tied to country of origin, citizenship, trade-agreements, tax rates, etc. A single provider network might provide workload statistics related to the various aspects of workload execution to identify optimizations where compute, data, power, latency, etc. are possible. The provider may modify space coordinates of other LEO satellites in its network to rendezvous with a peer satellite as a way to better load balance, improve availability and resiliency or to increase capacity.
In further examples, the SLA 2433 data of the UEC 2340 may be used to comprehend a priority factor. For instance, in a scenario where a UE (device) has line-of-sight and is allowed to access multiple terrestrial and non-terrestrial networks, predetermined factors help the UE prioritize which network to select. A terrestrial telco network where the UE is located may have first priority, then perhaps licensed satellite network options. Some satellite subscribers may pay for premium service whereas others may just have standard data rate plans connected to their UE, The UE SIM card may provide this priority and work with the UEC 2340 on SLA Priority. In such art example, the user context is stored in the SIM rather than being stored in a central database, and the Edge Node/Orchestrator can access the SIM directly rather than opening a channel to a backend repository to process a workload.
As noted above, another example may be that a premium user wants the best possible latency, similar to or better than terrestrial fiber, via the satellite network. The user may pay for and indicate this access in their UE SIM card which is connected to their UEC SLA. The speeds expected in space may be faster than some terrestrial networks, even fiber optical networks, so use of the UEC 2440 may provide a fastest lowest latency connection for point-to-point (e.g., when data connections are established to locations on opposite sides of the earth). For these and other scenarios, the SLA 2433 may be adapted to include a preferred order of available networks.
At operation 2.510, a user edge context is accessed (or newly defined) for use in a satellite communication network setting. This user edge context may include the data features and properties discussed with reference to
At operation 2530, a roaming scenario is encountered and identified, and information on available service providers for roaming is further identified. In an example, the roaming scenario involves a first satellite constellation moving out of range of a geographic area including the end user device, and a second satellite constellation moving into range of the end user device. Other scenarios (involving service interruptions, access to specific or premium services, preferences or SLA considerations) may also cause roaming.
At operation 2540, a second service provider (e.g., another satellite constellation) is selected to continue satellite network operations in a roaming setting, based on the information in the user edge context. At operation 2550, the user edge context is communicated to the second service provider, and network operations are commenced or continued according to the information in the user edge context.
Internet of Things Drone—Satellite Communication Architectures
In certain use cases, an end user may be interested in using devices for monitoring remote areas for changes in the environment, or connecting to such devices for deploying a status update or even software patching. The use of satellite connectivity enables a robust improvement to the usage of IoT devices and endpoints that are deployed in such remote settings.
In an example, a drone 2620, balloon 2625, or another unmanned aerial vehicle (UAV) can be equipped with data obtained directly via from the satellite 2630 (or satellite radio access network 2630 via the radio access network 2610), such as a map highlighting the locations of the sensors. The drone 2620 or balloon 2625 can travel to collect the data from the sensors, and then communicate it back to the radio access network 2610 for processing. Further, the satellite radio access network 2630 may relay the information to other locations, not shown.
In the example pipeline monitoring scenario, the data can include. any or all of the following:
(a) Previous data collected at that sensor or other sensors that are relevant;
(b) Weather forecast data or any data that is essential for the analytics;
(c) Algorithm updates if needed (e.g., to enable an update of an algorithm that can generate a local prediction);
(d) Software updates including security patches;
(e) Data from other sensors that the drone is collecting on its way that might be relevant to the edge node.
Each of the sensors can also be coupled to a local edge node (e.g., located at the radio access network 2610, not depicted) that has the following responsibilities:
(a) Collect and cache data locally from the sensor or a collection of sensors;
(b) Perform analytics on the data collected from the sensor to determine the health of the pipeline and future maintenance;
(c) Communicate an analytics outcome to other sensors in its vicinity/range of connectivity;
(d) Patch its own software from a model update to security patches.
Operators can rely on satellite communication to the radio access network 2610 to deliver software, collect data, and monitor insights generated at the edge. In addition, a further processing system (e.g., in the cloud, connected via a backhaul to the satellite 2630) can also predict when the sensors will no longer be in range and accordingly dispatch a drone with detailed mapping optimizing its route to deliver data (e.g. weather forecast), software updates (e.g. model update, security patch, . . . ). Such information may be coordinated with the information centric networking (ICN) or named data networking (NDN) approaches discussed further below.
The route used by the drone 2620 or balloon:2625 may also be. optimized to collect data from sensors that are out of range whose data is essential to generate an insight. For example, S2 is out of range to S0, however the data collected at S2 is a requirement for S0 to predict its maintenance. schedule, The drone 2620 will then choose a route that will get it in range with S2, collecting data from that node and its sensors The drone would then proceed to S1 providing the data collected from S2 and any additional delivery intended for S0. Each of the edge nodes (e,g., the edge nodes at the sensors S0-S4) obtains a dedicated storage reservation on the drone that is protected with keys for authentication and a policy to determine which of the other edge nodes are allowed access to read and/or write.
For this use case, the analytics executed on the mobile node (e.g., a IJAV such as drone 2620 or balloon 2625) may be focused on route selection and mapping of data collection and transmission. However, this mobile node might not have enough compute power to execute its own predictive analytics. In this scenario, the UAV would carry the algorithm to be executed, collect the data from the edge node/sensor, execute the algorithm, generate an insight and transmit it back to the cloud (e.g., via satellite 2630) where actions can be recommended and performed.
Or, in another example, the UAV may collect data for processing at an edge computing node located at the radio access network 2610. For instance, a UAV tray use EPVC channels depending on the criticality of the data, and use ICN or NDN techniques in case they the UAV does not know who can process the data. Other combinations of mobile, satellite, and edge computing resources may be distributed and coordinated based on the techniques discussed herein.
In further examples, rather than relying on condition maintenance techniques, the following predictive maintenance approach may be coordinated through the collection of device and sensor data through satellite connections. Thus, despite the remote nature of sensor deployments, the satellite connections (direct or via a drone or an access network) can be used to provide data to a predictive data analytics service, which can then proactively schedule service operations.
A combination of coordinating the satellite communications along with continual data collection supports new levels of criticality for real-world things to be monitored on the ground. The collection of data may be coordinated by a data aggregation device, a gateway, a base station, or access point. Likewise, the type of satellite network may involve one or multiple satellite constellations (and potentially one or multiple cloud service providers, services, or platforms accessed via such constellations).
Also in further examples, criticality may be identified in via the IoT monitoring data architecture. For example, suppose some monitoring data value is identified that is critical, and which requires some action or further processing to occur. This criticality can be correlated with the position or availability of a satellite network or constellation, and what types of network access are available. Likewise, if some critical action needs to be taken (such as communicating important data values), then these actions may be prioritized for the next period of time that a relevant satellite crosses into coverage.
In further examples, a UAV and other associated vehicle or mobile systems may also be coordinated in connection with predictive monitoring techniques. A computer system that is running predictive analytics and predictive maintenance may be coordinated or operated at the drone, as a drone may bring connectivity as well as compute capabilities. Likewise, the drones may be directly satellite connected themselves.
The connectivity among sensors, drones, base stations, and satellites may be coordinated with multiple levels of processing and different forms of processing algorithms. For example, suppose one sensor that identified that something is wrong, but does has not enough compute power or the correct algorithms to do the next layer level of processing. This sensor may use the resources it has (such as a camera) to capture data, and communicate this data to a central resource when a satellite is available for connectivity. Any of these connectivity permutations may be tied back to a quality of service offered and managed within a satellite communication network. As a similar example, in response to a sensor malfunctioning, satellite communications may be used to deploy a new algorithm. (Thus, even if the new algorithm is not as highly accurate and as the previous one, the new algorithm may be tolerant of the absence of the malfunctioning sensor).
At operation 2710, operations are performed to collect, process, and propagate data using edge computing hardware at an endpoint computing node (e.g., located at an IoT device). At operation 2720, operations are performed to collect, process, and propagate data using edge computing hardware at a mobile computing node, such as with a drone deployed to an IoT device. At operation 2730, operations are performed to collect, process, and propagate data using a terrestrial network and an associated edge computing node, such as at a 5G RAN, connected via a satellite backhaul.
At operation 2740, operations are performed to collect, process, and propagate data using a satellite network and an associated edge computing node, whether at the satellite or terrestrial edge computing node connected to the satellite link. At operation 2750, operations are performed to collect, process, and propagate data using a wide area network and associated computing node (e.g., to a cloud computing system).
It will be understood that other hardware configurations and architectures may be used for accomplishing the operations discussed above. For instance, some IoT devices (such as meter reading) work on best effort attempts; whereas other IoT devices/sensors need reliable, low latency notifications (e.g., a shipping container humidity sensor being monitored in real time to indicate theft). Thus, depending on the hardware and use case application, other operations and processing may also occur.
Any of these operations may be coordinated with the use of EPVC channels and ICN/NDN networking techniques discussed herein. In still further aspects, approaches for IoT device computing may be coordinated via satellite network connectivity, using the following example implementations.
Example D1 is a method for sensor data collection and processing using a satellite communication network, comprising: obtaining, from a sensor device, sensing data relating to an observed condition, the sensing data being provided to an intermediate entity using a terrestrial wireless communications network; causing the intermediate entity to transmit the sensing data to an edge computing location, the sensing data being communicated to the edge computing location using a non-terrestrial satellite communications network; and obtaining, from the edge computing location via the non-terrestrial satellite communications network, results of processing the sensing data.
In Example D2, the subject matter of Example D1 optionally includes subject matter where the intermediate entity provides network connectivity to the sensor device via the terrestrial wireless communications network.
In Example D3, the subject matter of Example D2 optionally includes subject matter where the intermediate entity is a base station, access point, or network gateway, and wherein the intermediate entity provides network functions for operation of the terrestrial wireless communications network.
In Example D4, the subject matter of any one or more of Examples D2-D3 optionally include subject matter where the intermediate entity is a drone.
In Example D5, the subject matter of Example 4 optionally includes subject matter where the drone is configured to provide network communications between the sensor device and an access point which accesses the satellite communications network.
In Example D6, the subject matter of any one or more of Examples D4-D5 optionally include subject matter where the drone includes communication circuitry to directly access and communicate with the satellite communications network.
In Example D7, the subject matter of any one or more of Examples D1-D6 optionally include subject matter where the terrestrial wireless communications network is provided by a 4G Long Term Evolution (LTE) or 5G network operating according to a 3GPP standard.
In Example D8, the subject matter of any one or more of Examples D1-D7 optionally include subject matter where the edge computing location is identified for processing based on a latency of communications via the satellite communications network and a time required for processing at the edge computing location.
In Example D9, the subject matter of any one or more of Examples D1-D8 optionally include subject matter where the satellite communications network is a low-earth orbit (LEO) satellite communications network, provided from a constellation of a plurality of LEO satellites.
In Example D10, the subject matter of Example D9 optionally includes subject matter where the edge computing location is provided using processing circuitry located at a LEO satellite vehicle of the constellation.
In Example D 11, the subject matter of any one or more of Examples D9-D10 optionally include subject matter where the edge computing location is provided using respective processing circuitry located at multiple LEO satellite vehicles of the constellation.
In Example D12, the subject matter of any one or more of Examples D9-D11 optionally include subject matter where the edge computing location is provided using a processing service accessible via the LEO satellite communication network.
In Example D13, the subject matter of any one or more of Examples D1-D12 optionally include subject matter where processing the sensing data comprises identifying data abnormalities based on an operational condition of a system being monitored by the sensor device.
In Example D14, the subject matter of Example D13 optionally includes subject matter where the system is an industrial system, and wherein the observed condition relates to at least one environmental or operational characteristic of the industrial system.
In Example D15, the subject matter of any one or more of Examples D13-D14 optionally include, transmitting a maintenance command for maintenance of the system, in response to the results of processing the sensing data.
In Example D16, the subject matter of any one or more of Examples D1-D15 optionally include subject matter where the sensing data comprises image data, and wherein the results of processing the sensing data comprises non-image data produced at the edge computing location.
In Example D17, the subject matter of any one or more of Examples D1-D16 optionally include subject matter where the sensing data is obtained and cached from a sensor aggregation device, wherein the sensor aggregation device is connected to a plurality of sensor devices including the sensor device.
In Example D18, the subject matter of Example D17 optionally includes subject matter where the sensing data is aggregated at the sensor aggregation device from raw data, the raw data obtained from the plurality of sensor devices including the sensor device.
In Example D19, the subject matter of Example D18 optionally includes subject matter where the sensor aggregation device applies at least one algorithm to the raw data to produce the sensing data.
In Example D20, the subject matter of any one or more of Examples D1-D19 optionally include subject matter where the method is performed by the intermediate entity.
Coordination and Planning Data Transfers across Satellite Ephemeral Connections
One of the challenges in new generations of moving satellite constellations is that the amount of compute and data transfer capacity offered by such constellations will depend on geo-location that they will cover. An end-to-end system involving many LEO satellites, in orbit, therefore results in a lack of full connectivity and high bandwidth connections all the time. As a result, two primary types of data transfers and processing need to be coordinated: a) between the satellites forming a cluster/coalition/constellation (e.g., to minimize data transfer needed—such as when summary information can be sent, and to ensure that data is not duplicated); and b) between a cluster of satellites and the ground stations (to identify when and which satellites communicates what data)—while considering the possibly of handoff to another satellite or around station.
In these scenarios, two different decisions can be considered for service continuity: (1) a decision of whether to perform some compute locally (with longer duration and use of scarce resources) or to wait to transfer the data to the ground and “offload” computation during the time that a satellite is flying over a zone; and (2) a decision of when is the best moment to transfer data from the satellite to the ground. Both decisions will depend on at least the following aspects: a duration of covering a particular zone with connectivity; an expected up and downlink on that zone; potential data or geo-constraints; and potential bandwidth dynamicity depending on the connectivity provider.
The following provides adaptive and smart mechanisms to address the previous points and provide a smart architecture to anticipate actions to be. performed. Furthermore, even though the resources on the individual satellites might be resource constrained (e.g., a limited number of CPUs available, power budget, etc.), such resources can be accounted for when producing an efficient and holistic plan. There are no current satellite connectivity approaches which fully consider the dynamic aspects of data transfer in geolocations tied into a robust quality of service. Moreover, the trade-off of offload versus local compute in moving satellites has not been fully explored.
To address these aspects, the following provides planning and coordination—not only for data and connection management, resource allocation, and resource management, but also from a processing order standpoint. For example, consider a ground control and satellite processing system producing a joint plan to determine a) where to look for some data action (e.g., positioning cargo ships) b) what kind of processing (e.g., detect a number of cargo ships), and c) how much bandwidth/storage resources/processing are required to send data back (e.g., even if analyzing images to determine just the number of cargo ships).
In an example, the plan/schedule 2801 can include: What experiment or scenario to perform (e.g., where to look at based on current trajectory; what sensors (image, radar, . . . ) to use; etc.); what data to process/store; what to transfer to what. other entity; and the like. Boundary conditions of the plan can be shared among the entities on a need-to-know basis. For example, satellites that belong to same entity can share all planning detail; an anonymized description can be shared with satellites or compute nodes from other service providers.
Use of a plan and schedule supports negotiation/sharing of constraints to get most efficient overarching plan (including from a resource usage, monetary cost, return on investment (ROI) or total cost of ownership (TCO) perspective). Thus, the plan/schedule can be self-optimized or provided by an entity such as the ground station/operator. Further, elements in the plan can have mixed criticality; some elements may be unmovable/unnegotiable; others may be deployed on best efforts (e.g., “do action whenever possible”). It will be understood that negotiation among the various system satellites, ground stations, customers, and other entities to develop the plan and schedule usage of the plan provides a unique and robust approach which far exceeds conventional techniques for planning. In particular, by considering multiple stakeholders, a global optimal plan can be developed, even as minimal required information is shared and privacy is protected among systems.
Example constraints in the plan/schedule 2801 that are relevant satellite connectivity and operation may include:
a) Location information, such as to determine or restrict what. experiments and tasks are possible (or, whether the task needs to wait for next orbit).
b) Order of the tasks
c) Hardware limits (e.g., GPU limits, indicating an inability to process two processing jobs at same time)
d) Restriction on number of tenants or different customers at same time (e.g., for data privacy)
e) Deadlines to perform data transfers
f) Connectivity conditions (such as when up/downlink not available; coordination among different types of LEO/GEO/ground networks)
g) Coordination of satellite or processing technologies that work together (e.g., overlay radar (obtained from a GEO satellite) with thermal imaging (obtained from a LEO satellite))
h) Resource restrictions (e.g., Power/Storage/Thermal/Compute restrictions).
i) Geo-fencing or geographic restrictions.
In further examples, the plan may be used to pre-reserve compute or communication resources in the satellites depending on what usage is expected. Such a reservation may depend also on the cost that will be charged depending on the current reservation.
At operation 2910, a plan and its plan constraints are defined (or, obtained) for the coordination of data transfer and processing among multiple entities, At operation 2920, a data experiment, action, or other scenario involving the coordinated data transfer and processing is invoked. For example, this may be a request to initiate some workload processing action.
At operation 2930, data is transmitted among entities of satellite communication network, based on the plan and the plan constraints. Likewise, at operation 2940, data is processed at one or more selected entity using edge computing resources of the satellite communication network, based on the plan and plan constraints.
The flowchart 2900 concludes at operation 2950 by transmitting the data processing result to a terrestrial entity, or among entities of the satellite communication network. Various aspects of handover, processing and data transfer coordination, and communications among satellites, constellations, and ground entities are not depicted but also may also be involved in the operations of flowchart 2900.
In further aspects, approaches for scheduling and planning satellite network computing operations may be coordinated and executed, using the following example implementations. Also, in further aspects, other aspects of resource expenditure not relating to monetary considerations may also be considered (such as constraints and usage of battery life, memory, storage, processing resources, among other resources):
Example E1 is a method for coordinating computing operations in a satellite communication network, comprising: obtaining, at a computing node of a satellite communication network, a coordination plan for performing computing and communication operations within the satellite communication network; performing a computing action on data in the satellite communication network, based on the coordination plan, the computing action to obtain a data processing result; performing a communication action with the data, via the satellite communication network, based on the coordination plan; and transmitting the data processing result from the satellite communication network to a terrestrial entity.
In Example E2, the subject matter of Example E1 optionally includes subject matter where the coordination plan for performing computing and communication operations includes a plurality of constraints, wherein the plurality of constraints relate to: location information; order of tasks; hardware limitations; usage restrictions; usage deadlines; connectivity conditions; resource information; resource restrictions; or geographic restrictions.
In Example E3, the subject matter of any one or more of Examples E1-E2 optionally include reserving compute resources, at the computing node, based on the coordination plan.
In Example E4, the subject matter of any one or more of Examples E1-E3 optionally include subject matter where the coordination plan for performing computing and communication operations within the satellite communication network causes the satellite communication network to reserve a plurality of computing resources in the satellite communication network, for performing the computing action with the data.
In Example E5, the subject matter of any one or more of Examples E1-E4 optionally include subject matter where communicating the data includes communicating the data to a terrestrial processing location, and wherein performing an action with the data includes obtaining the data processing result from the terrestrial processing location.
In Example E6, the subject matter of any one or more of Examples E1-E5 optionally include subject matter where communicating the data includes communicating the data to other nodes in the satellite communication network.
In Example E7, the subject matter of any one or more of Examples E1-E6 optionally include identifying, based on the coordination plan, a timing to perform the computing action.
In Example E8, the subject matter of Example E7 optionally includes subject matter where the timing to perform the computing action is based on coordination of processing among a plurality of satellite nodes in a constellation of the satellite communication network.
In Example E9, the subject matter of any one or more of Examples E1-E8 optionally include identifying, based on the coordination plan, a timing to transfer the data processing result from the satellite communication network to the terrestrial entity.
In Example E10, the subject matter of Example E9 optionally includes subject matter where the timing to transfer the data processing result is based on coordination of processing among a plurality of satellite nodes in a constellation of the satellite communication network.
In Example E11, the subject matter of any one or more of Examples E1-E10 optionally include subject matter where a timing of performing the computing action and a timing to transfer the data processing result is based on orbit positions of one or more satellite vehicles of the satellite communication network.
In Example E12, the subject matter of any one or more of Examples E1-E11 optionally include subject matter where the coordination plan causes the satellite communication network to handoff processing of the data from a first computing node to a second computing node accessible within the satellite communication network.
In Example 13, the subject matter of any one or more of Examples E1-E12 optionally include subject matter where the computing action on the data is performed based on resource availability within the satellite communication network or a network connected to the satellite communication network.
In Example E14, the subject matter of any one or more of Examples E1-E13 optionally include subject matter where the communication action is performed based on connection availability within the satellite communication network or a network connected to the satellite communication network.
In Example E15, the subject matter of any one or more of Examples E1-E14 optionally include subject matter where the terrestrial entity is a client device, a terrestrial edge computing node, a terrestrial cloud computing node, another computing node of a constellation in the satellite communication network, or computing node of another satellite constellation.
Satellite and Edge Service Orchestration based on Data Cost
New Digital Services Taxes (DST), proposed and implemented by the Organization for Economic Co-operation and Development (OECD) and European Commission, have been defined to tax services which use data generated from user activities on digital platforms from a certain country, that then are used on other countries. For example, such a tax applies to data collected from users of a service in Italy (e.g., user engagement data) that helps provide better recommendations to similar profiled users in another country (e.g., for video or music recommendations). This leads to a clear problem in the context of satellite connectivity networks: each country has their own tax rate, so from an economic perspective it is important to be able to select the best fit for services provided by a satellite infrastructure, which has more geographic coverage than traditional static infrastructures.
Likewise, edge computing has to increasingly deal with both data producer and data consumer mobility, while also considering caching, securing, filtering, transforming data on the fly, and dynamic refactoring of mobile producer resources and services. This is particularly the case for content and services hosted/cached at satellites both LEO/NEO) and GEO orbits. Accordingly, with the following techniques, data cost may be used as an additional variable while orchestrating services via satellite connections.
For example, based on resource usage tied to monetary cost, and considering that the satellites are travelling all the time across multiple geographic locations, a service scheme may be defined to use services which incur less taxes or service fees for each specific location. Services using specific user datasets will be labeled with their location and cost in order to determine the best or most effective option, in case there are several services offering the same service. Thus, data consumers, users, and service providers may evaluate trade-offs between cost, quality of service, etc, while complying with data taxation or other cost requirements.
In an example, new components are added to LEO Satellites and Ground Stations (e,g., base stations) to implement a new type of geo-aware orchestration policies. This includes configuration of the system to allow the inclusion of location and data cost as new tags as part of a service's metadata, in order to identify economically advantageous services running in LEO satellites considering their geographic positions. For instance, a system orchestrator running on ground stations may use this configuration to select an optimal service considering financial cost as a key element, but also taking into account the factors required for orchestration of satellites (e.g., telemetry, SLAs, transfer time, visible time, processing time). In the event that a less expensive service (e.g., with less tax) is expected to become available in a next coming satellite (in range shortly; e.g., in 5 minutes), and this next cheaper service will fulfill an SLA, the orchestrator will wait to use the next satellite.
A simple example of a cost-selected service is a CDN service, offering data from specific geographic origins which is associated with a known data cost and tax rate, Other types of data workload processing services, cloud services, and interactive data exchanges may occur between a data consumer and data provider. This is depicted with the example satellite communication scenario of
In an example scenario, suppose that GS13020 located in France requires the use of Service A and B, having to achieve use of the service in 5 minutes (to satisfy an SLA). An orchestrator (at the ground station, or a controlling entity of the ground station) evaluates satellites in range during the max available time (5 minutes), as illustrated in evaluation table 3030. In this situation, Satellite L13011 and L23012 are the only satellites in range in the next five minutes, and also capable of satisfying the service requirement.
Evaluation is then performed of the following services and options, considering cost:
Option 1: L1 Service A+L1 Service B: $20; time: ˜2 secs,
Option 2: L1 Service A+L2 Service B: $15; time: ˜3 mins 49 secs.
Option 3: L2 Service A+L1 Service B: $30; time: ˜3 mins 49 secs.
Option 4: L2 Service A+L2 Service B: $25; time: ˜3 mins 49 secs.
From this evaluation, connectivity via option 2 (L1 Service A and L2 Service B) is selected, providing a lowest cost across use of multiple satellites and services. (Note: taxes are often charged from the total revenue, but in the table above it is represented as an amount per transaction for purposes of simplification).
A catalog service running on the Satellite Edge will include a new API to receive updates about services' metadata. Inter-satellite links may be used for such updates, as satellites will advertise updates (deltas) so ground stations can have this information before the satellite is in range. Additionally, and in case it is permitted by the SLA, it may be possible to transfer or handoff processing actions to specific locations of ground stations, such as stations having more compute power and lower costs. The access to such ground stations and the results from such ground stations can be transported by any available LEO Satellite passing over it.
The Secure Enclave 3121 is configured for protecting sensitive or private financial information. In an example, the Secure Enclave 3121 may not be managed by a software stack, but is only managed or accessible by authorized personnel.
In an example, Satellite Edge components 1620 include an API gateway 3124, managing the execution of workloads 3125, and also providing an abstraction to services based on the location. This gateway receives location as an argument and returns the result of the service having a reduced resource cost (e.g., monetary cost). This is performed based on the configuration provided by the Service Planning component 3112, which is invoked from edge devices. This module may be covered by the local API Cache 3126. The satellite edge components 1620 also include a Data Sharing 3121 between satellites, used to keep the service catalog 3122 up to date on each satellite (such as through transmission of data delta changes), and to populate service use metrics 3123.
At operation 3210, various aspects of service demand and service usage conditions are identified, in connection with potential demand and usage of a satellite communication network (e.g., by a terrestrial user equipment device). From such service demand and service usage conditions, operation 3220 involves identifying the availability of one or more satellite network(s) to provide service(s) that meet the service usage conditions.
At operation 3230, the costs associated with available service(s) from available satellite network(s) are identified. As noted above, this may include a breakout of such costs based on geographic jurisdiction, time, service provider, service actions to be performed, etc. At operation 3240, this information is used to calculate costs for fulfilling the service demand.
At operation 3250 one or more services) are selected for use from one or more satellite networks(s) based on calculated costs, and consideration of the various constraints and conditions. Additional steps, not depicted for purposes of simplicity, may include service orchestration, consideration of service use metrics, invocation of a service catalog and APIs, and the like.
In further aspects, approaches for IoT device computing may be coordinated via satellite network connectivity, using the following example implementations.
Example F1 is a method of orchestrating compute operations in a satellite communication network based on a resource expenditure, comprising: identifying a demand for a compute service; identifying conditions for usage of the compute service that fulfill the demand; identifying a plurality of available compute services accessible via the satellite communication network, the available compute services being identified to satisfy the conditions for usage; calculating the resource expenditure for usage of the respective services of the available compute services; selecting one of the plurality of available compute services, based on the resource expenditure; and performing data operations with the selected compute service via the satellite communication network.
In Example F2, the subject matter of Example F1 optionally includes selecting a second of the plurality of available compute services, based on the resource expenditure; and performing data operations with the second selected compute service via the satellite communication network.
In Example F3, the subject matter of any one or more of Examples F1-F2 optionally include subject matter where the conditions for usage of the compute service relate to conditions required by a service level agreement.
In Example F4, the subject matter of any one or more of Examples F1-F3 optionally include subject matter where the conditions for usage of the compute service provide a maximum time for usage of the compute service.
In Example F5, the subject matter of Example 4 optionally includes subject matter where the available compute services are identified based on satellite coverage at a geographic location within the maximum time for usage of the compute service.
In Example F6, the subject matter of any one or more of Examples F1-F5 optionally include receiving information that identities the plurality of available compute services and identifies at least a portion of the resource expenditure for usage of the respective services.
In Example F7, the subject matter of any one or more of Examples F1-F6 optionally include subject matter where the plurality of available compute services are provided among multiple satellites.
In Example F8, the subject matter of Example F7 optionally includes subject matter where the multiple satellites are operated among multiple satellite constellations, provided from among multiple satellite communication service providers.
In Example F9, the subject matter of any one or more of Examples F1-F8 optionally include mapping the available compute services to respective geographic jurisdictions, wherein the resource expenditure relates to monetary cost, and wherein the monetary cost is based on the respective geographic jurisdictions.
In Example F10, the subject matter of any one or more of Examples F1-F9 optionally include subject matter where the monetary cost is calculated based on at least one digital service tax associated with a geographic jurisdiction.
In Example F11, the subject matter of any one or more of Examples F1-F10 optionally include subject matter where the compute service is a content data network (CDN) service provided via the satellite communication network, and wherein the resource expenditure is based on data to be retrieved via the CDN service.
In Example F12, the subject matter of any one or more of Examples F1-F11 optionally include wherein the method is performed by an orchestrator, base station, or user device connected to the satellite communication network.
Overview of Information Centric Networking (ICN) and Named Data Networking (NDN)
When a device, such as publisher 3340, that has content matching the name in the interest packet 3330 is encountered, that device 3340 may send a data packet 3345 in response to the interest packet 3330. Typically, the data packet 3345 is tracked back through the network to the source (e.g., device 3305) by following the traces of the interest packet 3330 left in the network element PITs. Thus, the PIT 3335 at each network element establishes a trail back to the subscriber 3305 for the data packet 3345 to follow.
Matching the named data in an ICN implementation may follow several strategies. Generally, the data is named hierarchically, such as with a universal resource identifier (URI). For example, a video may be named www.somedomain.com or videos or v8675309. Here, the hierarchy may be seen as the publisher, “www.somedomain.com,” a sub-category, “videos,” and the canonical identification “v8675309.” As an interest 3330 traverses the ICN, ICN network elements will generally attempt to match the name to a greatest degree. Thus, if an ICN element has a cached item or route for both “www.somedomain.com or videos” and “www.somedomain.com or videos or v8675309,” the ICN element will match the later for an interest packet 3330 specifying “www.somedomain.com or videos or v8675309.” In an example, an expression may be used in matching by the ICN device. For example, the interest packet may specify “www.somedomain.com or videos or v8675*” where ‘*’ is a wildcard. Thus, any cached item or route that includes the data other than the wildcard will be matched.
Item matching involves matching the interest 3330 to data cached in the ICN element. Thus, for example, if the data 3345 named in the interest 3330 is cached in network element 3315, then the network element 3315 will return the data 3345 to the subscriber device 3305 via the network element 3310. However, if the data 3345 is not cached at network element 3315, the network element 3315 routes the interest 3330 on (e.g., to network element 3320). To facilitate routing, the network elements may use a forwarding information base 3325 (FIB) to match named data to an interface (e.g., physical port) for the route. Thus, the FIB 3325 operates much like a routing table on a traditional network device.
In an example, additional meta-data may be attached to the interest packet 3330, the cached data, or the route (e.g., in the FIB 3325), to provide an additional level of matching. For example, the data name may be specified as “www.somedomain.com or videos or v8675309,” but also include a version number—or timestamp, time range, endorsement, etc. In this example, the interest packet 3330 may specify the desired name, the version number, or the version range. The matching may then locate routes or cached data matching the name and perform the additional comparison of meta-data or the like to arrive at an ultimate decision as to whether data or a route matches the interest packet 3330 for respectively responding to the interest packet 3330 with the data packet 3345 or forwarding the interest packet 3330.
In further examples, meta-data in an ICN may indicate features of terms of service or quality of service, such as is employed by the service considerations with the satellite communication networks discussed herein. For instance, such metadata may indicate: the geolocation that content was generated; whether the content is mapped into an exclusion zone; and whether the content is valid at a current or a particular geographic location. With this metadata, a variety of properties may be mapped into geographic exclusion and quality of service of a satellite communication network, such as using the techniques discussed herein. Also, depending on the QoS required in the PIT, the ICN network may select a particular satellite communication provider (or select another provider entirely).
ICN has advantages over host-based networking because the data segments are individually named. This enables aggressive caching throughout the network as a network element may provide a data packet 3330 in response to an interest 3330 as easily as an original author 3340. Accordingly, it is less likely that the same segment of the network will transmit duplicates of the same data requested by different devices.
Fine grained encryption is another feature of many ICN networks. A typical data packet 3345 includes a name for the data that matches the name in the interest packet 3330. Further, the data packet 3345 includes the requested data and may include additional information to filter similarly named data (e.g., by creation time, expiration time, version, etc.). To address malicious entities providing false information under the same name, the data packet 3345 may also encrypt its contents with a publisher key or provide a cryptographic hash of the data and the name. Thus, knowing the key (e.g., from a certificate of an expected publisher 3340) enables the recipient to ascertain whether the data is from. that publisher 3340. This technique also facilitates the aggressive caching of the data packets 3345 throughout the network because each data packet 3345 is self-contained and secure. In contrast, many host-based networks rely on encrypting a connection between two hosts to secure communications. This may increase latencies while connections are being established and prevents data caching by hiding the data from the network elements.
In further examples, different ICN domains may be separated, such that different domains are mapped into different types of tenants, service providers, or other entities. The separation of such domains may enable a form of software-defined networking (e.g., SD-WAN) using ICN, including in the satellite communication environments discussed herein. Additionally, ICN topologies, including what nodes are exposed from specific service providers, tenants, etc., may change based on geo-location, which is particularly relevant for satellite communication environments.
Example ICN networks include content centric networking (CCN), as specified in the Internet Engineering Task Force (IETF) draft specifications for CCNx 0.x and CCN 1.x, and named data networking (NDN), as specified in the NDN technical report DND-0001.
NDN is a flavor of ICN that brings new opportunities for delivering better user experiences in scenarios that are challenging for the current IP-based architecture. Like ICN, instead of relying upon host-based connectivity, NDN uses interest packets to request a specific piece of data directly (including, function performed on particular data. A node that has that data sends it back as a response to the interest packet.
After the PIT entry is created, a look up occurs in the Forwarding information Base (FIB) table 3415 to fetch the information about the next hop (e.g., neighbor node face) to forward that interest packet. In case no FIB entry is found, this request may be sent out on all available faces, except the one upon which the interest packet was received, or the request may be dropped and no route NACK (negative acknowledgement) message will be sent back to the requester. On the other hand, if the neighboring node does have an entry in the FIB table 3415 for the requested information, it forwards the interest packet further out into the network (e.g., to other NDN processing nodes 3420) and makes an entry in its Pending interest Table (PIT).
When the data packet arrives in response to the interest, the node forwards the information back to the subscriber by following the interest path (via the entry in the PIT 3425, while also caching the data at the content store 3430) as shown in the bottom of
Satellite Handover for Compute Workload Processing
As discussed above, with the use of many nodes on the ground connected to many satellites and satellite constellations orbiting the earth, a variety of connectivity use cases are enabled. It is expected that some LEO satellites will provide compute and data services to ground nodes in addition to pure connectivity, with the added challenge that LEO satellites will he intermittently visible to the ground nodes. In such a scenario, if a satellite is the middle of providing a service when it loses visibility to the ground node, it could result in disruption of the service and loss of intermediate results computed by the first satellite. This disruption may be mitigated or overcome with the following handover techniques, to coordinate data transfers and operations.
As an additional description of such a scenario, consider a use case where the satellite 3602 is in the middle of sending data to a ground node 3622 or is in the middle of performing a compute service, but loses coverage of the ground node 3622 that it is communicating with. At some point a new satellite 3601 will be in view of the ground node 3622. However, the new satellite 3601 may not have the data that the ground node 3622 is requesting. Further, if it is a compute service, all the state and partial computations that the old satellite has does not exist with the new system.
Estimating when the satellite will be in coverage or out of coverage, and coordinating requests for such coverage among different satellites requires significant overhead. Therefore, the following proposes a scheme where the new satellite coming into view can pick up where the old satellite left off with minimum overhead.
The following uses a name-based scheme, like other ICN activities, where the user (e.g., client) requests the compute based on the name of the function (e.g., software function) and the data it needs to operate on. This may be referred to in some implementations as named function networking (NFN) or named data networking (NDN). Since the request is name-based, the name is not tied to any specific node or location. In this case, when the first satellite moves, and a second satellite comes in range, the compute request is just forwarded to the second satellite. However, rather than re-compute all the data, when a LEO satellite receives its first compute request from a new location, it asks for a data migration (e.g., “core dump”, or container migration) of all relevant compute information from the old satellite.
The following provides a simple and scalable solution for performing compute services on the satellite. The handover technique does not need the overhead of predicting loss of coverage. Rather the system is triggered upon receipt of the first compute interest packet. The following also provides a development of a new type of interest packet that requests all materials related to compute services. This is not done by default since if the new satellite does not receive any compute requests, it does not request previous compute information. Additional security and other constraints can also be linked to which satellites get previous compute information and can perform compute.
In the flow of
At time 3712, the LE013706 moves out of range, followed by the LEO23708 moving into range. Based on this transition, the first compute request is forwarded to LEO23708 at time 3714.
The user provides a second compute service request, for the compute action, function, or data, at operation (3). The ground node 3704 now forwards this to the LEO23708 for processing. The LEO23708 provides a request to LEO13706 for a dump of compute information, for some time or other specification (e.g., for the last minute), and obtains such information from LEO 3706. The LEO23708 then sends back remaining results to the user 3702 in operation (4).
In further examples, the selection of LEO23708 can be based on existing routing and capacity planning rules. For instance, if LEO13706 has multiple options on what LEO23708 can select, it can use: (1) how much power capabilities are provided; (2) how much QoS features are provided; and (3) whether EPVC channels can be established back, according to a SLA. These factors may be included in the FIB of the LEO23708 to help determine upon which interfaces the requests will be sent.
In contrast to the handover approach depicted in
Other extensions to the handover technique depicted in
Additionally, other network information (such as cellular network control plane information) may be used for a processing handover, considering that satellite technologies are planned as one of the radio access technologies in 5G and beyond. Here, the ground nodes (e.g., ground node 3704) are considered as part of the cellular network and connect the cellular base stations through either through wired (e.g. Xn interface) or wireless interfaces. If the satellite moves, the ground nodes can detect the movement and exchange the information with base stations which can smartly forward the consumers' request to the new satellite through the new ground node. Accordingly, coordination can also be used to handle data consumer or user movements.
At operation 3810, a compute service request is received at (or, provided to) first satellite node via NDN/ICN architecture. This service request may involve a request for at least one of compute operations, function performance, or data retrieval operations, via the NDN/ICN architecture.
At operation 3820, intermediate or partial results of the service request are provided from first satellite node to a user/consumer (or, received from such node). For instance, the initial response to the service request may include partial results for the service request, as discussed above with reference to
At operation 3830, an updated (second) service request is obtained at (or, communicated to) a second satellite node, in response to user or satellite coverage changes. As noted above, this handover may occur automatically within the satellite network, such as from a first satellite to a second satellite of a constellation, based on geographic coverage information, or a state of the user connection.
At operation 3840, the updated service request is received at second satellite node via the NDN architecture, for the initial or the remaining processing results. Here, the second satellite node completes the partially serviced request using the migrated first satellite node context. In some examples, the terrestrial user is not aware of the handoff to the second satellite node, and thus the operations to perform the handoff remain transparent to the end user.
At operation 3850, the second satellite node operates to obtain results of compute or data processing for the service request (based on intermediate results, service conditions, or other information from the first satellite node).
At operation 3860, the remaining results of the service request (as applicable) are generated, accessed, or otherwise obtained, and then communicated from first satellite node to the end user/consumer.
In further examples, a ground node is involved to request, communicate, or provide data as part of the service request and the NDN operations. For instance, the ground node may be involved as a first hop of the NDN architecture, and forward the service request on to the satellite communication network if some data or function result cannot be provided from the ground node.
Example G1 is a method for coordinated data handover in a satellite communication network, comprising: transmitting, to a satellite communication network implementing a named data networking (NDN) architecture, a service request for the NDN architecture; receiving, from a first satellite of the satellite communication network, an initial response to the service request; transmitting, to the satellite communication network, an updated service request for the NDN architecture, in response to the first satellite moving out of communication range; and receiving, from a second satellite of the satellite communication network, a updated response to the updated service request, based on handover of the service request from the first satellite to the second satellite.
In Example G2, the subject matter of Example G1 optionally includes subject matter where the service request is a request for at least one of: compute operations, function performance, or data retrieval operations, via the NDN architecture.
In Example G3, the subject matter of any one or more of Examples G1-G2 optionally include subject matter where the initial response to the service request comprises partial results for the service request, and wherein the updated response to the updated service request comprises remaining results for the service request.
In Example G4, the subject matter of any one or more of Examples G1-G3 optionally include subject matter where the handover of the service. request is coordinated between the first satellite and the second satellite, based on forwarding of the service request from the first satellite to the second satellite, and based on the second satellite obtaining data from the first satellite that is associated with the initial response to the service request.
In Example G5, the subject matter of any one or more of Examples G1-G4 optionally include subject matter where operations are performed by a user equipment directly connected to the satellite communication network.
In Example G6, the subject matter of any one or more of Examples G1-G5 optionally include subject matter where operations are performed by a ground node connected to the satellite communication network, wherein the ground node communicates data of the service requests and the responses with a connected user.
In Example G7, the subject matter of Example G6 optionally includes subject matter where the ground node invokes the service request in response to being unable to fulfill the service request at the ground node.
In Example G8, the subject matter of any one or more of Examples G1-G7 optionally include subject matter where the handover of the service request includes coordination of compute results being communicated from the first satellite to the second satellite.
In Example G9, the subject matter of Example 08 optionally includes subject matter where the compute results include data performed for a period of time at the first satellite.
In Example G10, the subject matter of any one or more of Examples G1-G9 optionally include subject matter where the service request includes a NDN request based on a name of a function and a data set to operate the function on.
In Example G11, the subject matter of any one or more of Examples G1-G10 optionally include subject matter where the first satellite or the second satellite are configured to fulfill the service request based on additional compute nodes accessible from the satellite communication network.
In Example G12, the subject !natter of any one or snore of Examples G1-G11 optionally include subject matter where the first satellite and the second satellite are part of a low-earth orbit (LEO) satellite constellation,
In Example G13, the subject matter of any one or more of Examples G1-G12 optionally include subject matter where selection of the first satellite or the second satellite to fulfill the service request is based on network routing or capacity rules.
In Example G14, the subject !natter of Example G13 optionally includes subject matter where the selection of the first satellite or the second satellite to fulfill the service request is further based on quality of service and service level requirements.
In Example G15, the subject matter of any one or more of Examples G1-G14 optionally include subject matter where the updated service request is further coordinated based on movement of a mobile device originating the service request.
Discovery and Routing Algorithms for Satellite and Terrestrial Links
As shown in the previous examples, an infrastructure node on the ground will be connected to (i) the LEO satellite(s), (ii) client devices over a wireless link, (iii) client devices over a wired link, and (iv) other infrastructure devices over wired and/or wireless links. Each of these links will have different delays and bandwidths. When it comes to a request for data, the decision on which link to use is more straightforward. The closest node with a shortest delay will make a good choice. However, if it is a compute request, the decision also has to be about the type of compute hardware that is available on the device, the QoS requirements, security requirements, and so on.
Leveraging name based addressing in ICN, the following presents enhancements that allow the system to perform discovery as well as select the best node/path for performing the service (routing and forwarding). In a satellite edge framework, different nodes will have different compute capabilities and resources (hardware, software, storage, etc.), the application will have different QoS requirements and priorities, and there may be additional policies enforced by the government or other entities.
To provide an example, it is possible that certain satellites have implemented security features while others have not. For instance, some of them may have secure enclave/trusted execution environment features while others do not. As a result, when an interest packet arrives at the base station, the base station has to make the decision on whether or not to forward it to the satellite link. There could easily be situations where even though the delay to the satellite is large, it has a much larger computing resource and will make a better choice for running a service compared to a ground node that is closer (and even has a high bandwidth).
The following proposes a multi-layer solution deciding where to forward the compute requests and how to use resources to compose services. This is applicable to the use of ICN or NDN, as there are routing as well as forwarding decisions that need to be made. The disclosed discovery mechanisms may help populate the routing tables or the Forwarding Information Base (FIB), and creates a map of links to available resources along with delays, bandwidth etc.
Because forwarding in an ICN is hop by hop, each time an interest packet arrives at a node, the node has to make a decision where to forward the. packet. If the FIB indicates, for instance, three locations or links that are capable of performing the function, the forwarding strategy has to decide which of those three is the best option.
At the first tier, there is also resource discovery information 3920 obtained from identifying the relevant compute, storage, or data resources. information on such resources, and resource capabilities, may be discovered and identified as part of a ICN/NDN network as discussed above.
In addition, at the first tier, there may be other local policies that need to be enforced that do not change dynamically. This is the policy information 3930 in the top layer.
The forwarding strategy layer 3950 uses inputs from all the three sources 3910, 3920, 3930, and then decides on the best path to forward an interest packet. At the strategy layer, policy overrides application requirements.
Once the forwarding strategy layer 3950 makes a decision on where to forward the interest packet, it has the option to provide “forwarding hints” to the other nodes as well. For instance, if a certain group of routes need to be avoided, it can indicate that in the forwarding hint. Thus, even though forwarding is hop by hop in ICN/NDN, the source node can provide guidance on routing for all the nodes to come.
In further examples, aspects of satellite area geo-fencing and QoS/service level considerations (discussed throughout this document) may be integrated as part of a forwarding strategy. Thus, a routing can include considerations not only on a SLA but as well on the interests or limitations for geographic locations.
Use of this approach provides a comprehensive solution for implementing QoS, Policies, security, and the like along with discovery and routing. This approach can support dynamically discovering resources which is important in the satellite edge. This approach enables the use of secure as well as non-secure satellite nodes and other compute resources. This approach also considers wireless delays and bandwidth in a comprehensive manner along with other parameters to make routing and forwarding decisions. In contrast, existing orchestration solutions rely mostly on static routing and resource frameworks.
LEO based routing may be adapted to construct a path that provides the end-to-end SLA including factors including Ground-Based Nodes, Active Satellite Based Nodes, hop-to-hop propagation delays, which hops are secure, which inter-satellite links are on/off, and where the routing algo calculations will be performed. Ground-based algorithmic calculations of such routes can be more compute-intensive then in-orbit calculations; thus, an important factor may be hops are secure/or which hops use compression to get the best outcome depending on how fast the constellation needs to be updated.
Thus, even with ground-based routing calculations, a broad view of a space based network and characteristics of hops (secure/compression/etc.) can be evaluated to ensure SLA outcomes. Routes located on the ground also may be considered as part of the potential route to achieve the SLA outcome. (For instance, such as with the use of fiber optic networks and dedicated links on-ground, which provide high bandwidth and low latency). As an example, one route choice might be Sat1→Sat2→Sat3→Sat 4, whereas another route choice could be Sat1→Sat 2→Earth route→Sat 4.
In further examples, overlays may be created for different tenants and exclusion zones. -For example, to have different organizations or tenants that have different levels of trust to different type of routers or network providers. Further, with the use of credentials, levels of trust may be established for various routers (e.g., tied to different interest packets). Likewise, in further examples, concepts of trusted routing may be applied.
At operation 4010 a request is received for data routing, involving a data connection via a satellite communication network. This request may he received at and the following steps performed by a ground-based infrastructure node connected to the satellite communication network, by user equipment directly or indirectly connected to the satellite communication network, or by a satellite communication node itself,
At operation 4020, one or more application parameters (including application preferences) are identified and applied, with such application parameter defining priorities among requirements for the data connection.
At operation 4030, one or more resource capabilities are identified and applied, with these resource capabilities relating to resources at nodes used for fulfilling the data connection.
At operation 4040, one or more policies are identified and applied, with such policies respectively defining one or more restrictions for use of the data connection
At operation 4050, a routing strategy (and routing path) is identified based on preferences, capabilities, policies. Fir instance, this may be based on the prioritization among: the priorities defined by the application parameters, the resource capabilities provided by the nodes, and satisfaction of the identified policies.
At operation 4060, the routing strategy is applied (such as in an ICN implementation), including with the use of the identified routing path(s) to generate a next hop of an interest packet, or to populate a FIB table. Other uses and variations may apply for use of this technique in a non-ICN network architecture.
Example H1 is a method for data routing using a satellite communication network, comprising: receiving a request for data routing using a data connection via the satellite communication network; identifying at least one application parameter for use of the data connection, the application parameter defining priorities among requirements for the data connection; identifying at least one resource capability for the use of the data connection, wherein the resource capability relates to resources at nodes used for fulfilling the data connection; identifying at least one policy for use of the data connection, the policy defining at least one restriction for use of the data connection; determining at least one routing path via at least one node of the satellite communication network, based on prioritization among: the priorities defined by the application parameter, the resource capability provided by the at least one node, and satisfaction of the identified policy by the at least one node; and indicating the routing path for use with a data connection on the satellite communication network.
In Example H2, the subject matter of Example H1 optionally includes subject matter where the routing path is used in data communications provided within a named data networking (NDN) architecture.
In Example H3, the subject matter of Example H2 optionally includes subject matter where the routing path is used to generate a next hop of an interest packet used in the NDN architecture.
In Example H4, the subject matter of any one or more of Examples H2-H3 optionally include subject matter where the routing path is used to populate a forwarding information base (FIB) of the NDN architecture.
In Example H5, the subject matter of any one or more of Examples H1-H4 optionally include subject matter where the requirements for the data connection provided by the application parameter relate to at least one of: security, latency, quality of service, or service provider location.
In Example H6, the subject matter of any one or more of Examples H1-H5 optionally include subject matter where the resource capability provided by the at least one node relates to security, trust, hardware, software, or data content.
In Example H7, the subject matter of any one or more of Examples H1-H6 optionally include subject matter where identifying the resource capability comprises discovering resource capabilities at a plurality of nodes, the resource capabilities relating to security and trust,
In Example H8, the subject matter of Example H7 optionally includes subject matter where the resource capabilities at the plurality of nodes further relate to service resources provided by at least one of computing, storage, or data content resources.
In Example H9, the subject matter of any one or more of Examples H1-H8 optionally include subject matter where the at least one restriction of the policy relates to a satellite exclusion zone, a satellite network restriction, or a device communication restriction.
In Example H10, the subject matter of any one or more of Examples H1-H9 optionally include subject matter where the routing path includes a terrestrial network connection,
In Example H11, the subject matter of any one or more of Examples H1-H10 optionally include subject matter where determining the routing path comprises determining a plurality of routing paths that satisfy the identified policies, and selecting a path based on the application parameter and the resource capability.
In Example H12, the subject matter of Example H11 optionally includes determining a preference among the plurality of routing paths, and providing forwarding hints for use of the plurality of routing paths.
In Example H13, the subject matter of any one or more of Examples H1-H12 optionally include subject matter where the method is performed by a ground-based infrastructure node connected to the satellite communication network.
In Example H14, the subject matter of any one or more of Examples H1-H13 optionally include subject matter where the method is performed by a user equipment directly or indirectly connected to the satellite communication network.
In Example H15, the subject matter of any one or more of Examples H1-H14 optionally include subject matter where the operations are performed by a satellite communication node, wherein the satellite communication network includes paths among a plurality of satellite constellations operated with multiple service providers.
In Example H16, the subject matter of any one or more of Examples H1-H15 optionally include subject matter where the satellite communication network includes potential paths among a plurality of inter-satellite links.
Satellite Network Packet Processing Improvements
The following disclosure, addresses various aspects of connectivity and network data processing, relevant a variety of network communication settings. Specifically, some of the techniques discussed herein are relevant for packet processing performed by simplified hardware in a transient non-terrestrial network (e.g., low earth orbit (LEO) or very low earth orbit (VLEO) satellite constellation) network. Other of the techniques discussed herein are relevant to packet processing in terrestrial networks, such as with the use of network processing hardware at various network termination points.
In the context of many network deployments, service providers are embracing the use of Internet Protocol Security (IPSec) to secure the path of infrastructure traffic from Edge to Core. IPSec requires many packet modifications for each session flow requiring the use of packet processing engines adding latencies between the IPSec termination points, which impacts the ability for service providers to meet required <1 ms 5G latencies.
In network applications such as IPSec, Datagram Transport Layer. Security (DTLS), etc,, packets need to be modified (e.g., add or remove header, add or remove fields, encrypted or decrypted, authenticated) before packet transmission or after packet reception. For achieving the high throughput required by modern networking applications, a large number of dedicated network processing engines are required to operate in parallel. The following systems and methods significantly improve latency, power, and die area constraints by utilizing a command-template based mechanism that eliminates the need for multiple network processing engines to process and modify such packets.
The following provides an approach to reduce the latencies introduced with securing 5G edge-to-core traffic by using a single engine with pre-determined packet templates instead of multiple packet engines. By reducing the number of packet engines, fewer arithmetic logic units (ALUs) are used, thus reducing network process design complexity, reducing circuitry area, reducing power, and ultimately allowing service providers to meet 5G latency requirements at the edge. In an implementation, ALU count is reduced by 64 fewer ALUs while allowing the performance of the same packet operations.
In the context of
Likewise, a latency sensitive environment is depicted in
Different templates may be used depending on location or type of routing to be performed. For instance, templates may include templates for extreme latency and minimal processing capabilities, such as with use of non-terrestrial in-orbit hardware processing having limited hardware capabilities, or at other limited hardware located at the network boundary, network access, or in-orbit. Without a template packet modifier, higher latency especially for in-orbit routing protocols can be experienced. In contrast, with the following template packet modifier, there is less latency and fewer hardware components via the use of a single packet engine. The use of a single packet engine with substitute template uses one common engine adaptable for routing based on location, whether in terrestrial or satellite networks.
To achieve high throughput, multiple packets are processed in parallel substantially simultaneously, with each pipeline requiring its own dedicated processing engine. The use of network processors arranged in parallel to perform such operations on the packets is shown in
To overcome the drawback of each ALU generating commands at run time in the network processing system described above, a command-template based (CTB) network processor 4400 is provided in
The network processor 4400 of
The command templates block 4404, loaded during initialization, stores sets of command templates with pre-prepared commands. Each command template includes two sets of commands: the network command set (NCS) and the substitute command set (SCS). The network commands set includes commands to be used by the modifier 4406 in the CTB network processor 4400 to modify the packet. The substitute commands set includes commands used by the parameters substitution block 4402 to modify the network commands set before being sent to the modifier 4406 to modify packets.
The command-template based network processor 4400, based on the protocol, will select one template from the command templates block 4404, and the parameter substitution block 4402 will use the substitute commands set from the selected template to replace some fields in the network commands set using input parameters. The input parameters are received from an ALU 4408. The network command set is then sent to the modifier 4406 to make modification to the packets.
The parameters provided to the network processor 4400 are in fixed format as well as the templates. In this way, the parameter substitution block 4402 simply operates to copy parameters into the network commands set based on the substitute commands set. The command templates block 4404 is shared by all the network processors 4400. The parameters are prepared by the AIX 4408 at run time for each packet, and become part of the packet meta data passed from stage to stage.
A template includes a network command 4602, The network command 4602 has an insert command to insert the IV located at offset 10 in the network command set 4602, The insert command has four fields, each 1 byte long except the pkt offset field which is 4 bytes long. The insert command is followed by 32. bytes, which are used to store up to 32 bytes of data. The cmd_len is the length of the current command, which is 40 bytes for this case. The valid_len is the actual IV length. The valid_len is updated by the substitution command with IV_len=16. In the insert command, the pkt_offset is the location in the packet where the IV values will be inserted, and in this case, it will be updated by the substitute command with a value of 52 (pkt_IV_offset value in the parameters 4600).
The substitution command format is simple: copy, source offset, destination offset, length. Thus, as illustrated in
The resulting network command will be used by the modifier, which, in this case, will insert 16 bytes of data at packet offset 52, and then advance to the next command which is 40 bytes away.
Accordingly, this command template-based network processing mechanism effectively substitutes pre-prepared commands with run-time parameters to efficiently process packets in high-performance networking applications. This eliminates the need for multiple network processing engines and requiring only one common engine. This may require far fewer ALUs and reduce the amount of time for processing.
Similar to the approaches discussed above for IPSec, this packet processing technique may apply to other various routing protocols including those used in satellite communication networks. LEO satellite network routing can be performed on the ground “off-line,” and used for setting up the paths among satellite and ground nodes. However, constellation nodes are dynamic time variable due to orbital shifts, off-line nodes, and or exclusion zone servicing. Depending on how providers approach these issues, different protocols or satellite-to-satellite communication technologies (e.g., radio or laser) may be used, for example, to support use of inter satellite links (ISLs) or to service premium subscribers (like URLCC—ultra reliable low latency connections). Consequently, if processing is shifted into orbit, then latency, power, and simplistic processing becomes an important consideration that is addressed with the command template-based network processor discussed above.
Further, with use of minimal memory data changes (to avoid corruption due to space solar radiation) then the value of the command template processing becomes apparent. This is especially beneficial for those protocols like asynchronous transfer mode (ATM) where the virtual nodes are set and can be dynamically adjusted for shortest path. Thus, with use of the present packet processing techniques, dynamic network processing changes can be addressed in orbit—closer to the actual path re-routing.
Additionally, the reference architecture for the packet processing template discussed herein may also be extended as part of a “regenerative satellite enabled NR-RAN with distributed gNB” as part of an improved 5G network. Here, the gNB-DU (distributed unit) may be hosted at a satellite, and therefore some of the NR protocols are processed by the on-board at the satellite, using an in-orbit DU. In contrast, existing deployments for a vRAN-DU are located on the ground. Consider an example of having to re-route when there is a sudden change of traffic load that causes congestion and there is no time to wait for ground based (off-line) routing to happen, so the satellite needs to step in. In this situation, low latency, limited processing capability, and immediate response. can be provided by the present packet template processing techniques at the satellite communications hardware.
At operation 4730, the ALU 4408 operates to generate and provide parameters for modification of the one or more packets. The template obtained from the command templates block 4404 is then provided at operation 4740, and used for initial parameter substitution, such as by the parameter substitution block 4402. The initial parameter substitution at operation 4740 provides substitution commands that can be used to modify the particular type of packet being processed.
At operation 4750, the substitution commands are applied, to modify the one or more processed packets, based on the substituted parameters provided into the template. This operation may be performed by modifier 4406 as discussed above. Such substitution commands may be iteratively performed to modify packets at multiple stages, such as is shown in
Further example implementations include the following device configuration, and methods performed by the following configuration and similar network processing devices.
Example I1 is a network packet processing device, comprising: a network interface to receive a stream of packets; an arithmetic logic unit (ALU); a command template store; and circuitry comprising a plurality of processing components connected to the ALU and the command template store, the plurality of processing components arranged in parallel groups of serial pipelines, each pipeline including a first stage and a second stage, wherein processing components in the first stage receive parameters from the ALU and use the parameters to modify commands in a template received from the command template store, the modified commands used to modify a packet in the stream of packets.
In Example I2, the subject matter of Example I1 optionally includes subject matter where the template received from the command template store comprises a network command and a corresponding substitute command, wherein the substitute command uses the parameters received from the ALU to revise the network command.
In Example I3, the subject matter of Example I2 optionally includes subject matter where the network command is a generalized command structure.
In Example I4, the subject matter of any one or more of Examples I2-I3 optionally include subject matter where the network command is related to a type of packet being processed from the stream of packets.
In Example I5, the subject matter of any one or more of Examples I1-I4 optionally include subject matter where the ALU is the sole ALU in the network packet processing device.
In Example I6, the subject matter of any one or more of Examples I1-I5 optionally include subject matter where a processing component in the first stage outputs a revised packet based on the commands in the template, and a processing component in the second stage receives the revised packet and further modifies it based on the template.
In Example I7, the subject matter of any one or more of Examples I1-I6 optionally include subject matter where a processing component in the first stage outputs a revised packet based on the commands in the template, and a processing component in the second stage receives the revised packet and further modifies it based on a second template received from the template store.
In Example I8, the subject matter of any one or more of Examples I1-I7 optionally include subject matter where each of the processing components in the first stage operate on a same type of packet provided according to a network communication protocol.
In Example I9, the subject matter of any one or more of Examples I1-I8 optionally include subject matter where the network packet processing device is deployed in network processing hardware of a low-earth orbit satellite vehicle.
In Example I10, the subject matter of any one or more of Examples I1-I9 optionally include subject matter where the stream of packets are of a first type of network communication protocol, and the plurality of processing components are used to convert the stream of packets to a second type of network communication protocol.
In Example I11, the subject matter of any one or more of Examples I10 optionally include subject matter where the command template store provides one or more templates for pre-determined routing protocols used with satellite-based networking.
In Example I12, the subject matter of any one or more of Examples I1-I11 optionally include subject matter where the circuitry is provided by an application-specific integrated circuit (ASIC).
In Example I13, the subject matter of any one or more of ExamplesI1-I12 optionally include subject matter where the plurality of processing components comprise a plurality of network processors.
Implementation in Edge Computing Scenarios
It will be understood that the present terrestrial and non-terrestrial networking arrangements may be integrated with many aspects of edge computing strategies and deployments. Edge computing, at a general level, refers to the transition of compute and storage resources closer to endpoint devices (e.g., consumer computing devices, user equipment, etc.) in order to optimize total cost of ownership, reduce application latency, improve service capabilities, and improve compliance with security or data privacy requirements. Edge computing may, in some scenarios, provide a cloud-like distributed service that offers orchestration and management for applications among many types of storage and compute resources. As a result, some implementations of edge. computing have been referred to as the “edge cloud” or the “fog”, as powerful computing resources previously available only in large remote data centers are moved closer to endpoints and made available for use by consumers at the “edge” of the network.
In the context of satellite communication networks, edge computing operations may occur, as discussed above, by: moving workloads onto compute equipment at satellite vehicles; using satellite connections to offer backup or (redundant) links and connections to lower-latency services; coordinating workload processing operations at terrestrial access points or base stations; providing data and content via satellite networks; and the like. Thus, many of the same edge computing scenarios that are described below for mobile networks and mobile client devices are equally applicable when using a non-terrestrial network.
As shown, the edge cloud 4810 is co-located at an edge location, such as a satellite vehicle 4841, a base station 4842, a local processing hub 4850, or a central office 4820, and thus may include multiple entities, devices, and equipment instances. The edge cloud 4810 is located much closer to the endpoint (consumer and producer) data sources 4860 (e.g., autonomous vehicles 4861, user equipment 4862, business and industrial equipment 4863, video capture devices 4864, drones 4865, smart cities and building devices 4866, sensors and. IoT devices 4867, etc.) than the cloud data center 4830. Compute, memory, and storage resources which are offered at the edges in the edge cloud 4810 are critical to providing ultra-low or improved latency response times for services and functions used by the endpoint data sources 4860 as well as reduce network backhaul traffic from the edge cloud 4810 toward cloud data center 4830 thus improving energy consumption and overall network usages among other benefits.
Compute, memory, and storage are scarce resources, and generally decrease depending on the edge location (e.g., fewer processing resources being available at consumer end point devices than at a base station or at a central office). However, the closer that the edge location is to the endpoint (e.g., U Es), the more that space and power is constrained. Thus, edge computing, as a general design principle, attempts to minimize the amount of resources needed for network services, through the distribution of more resources which are located closer both geographically and in network access time. In the scenario of non-terrestrial network, distance and latency may be far to and from the satellite, but data processing may be better accomplished at edge computing hardware in the satellite vehicle rather requiring additional data connections and network backhaul to and from the cloud.
In an example, an edge cloud architecture extends beyond typical deployment limitations to address restrictions that some network operators or service providers may have in their own infrastructures. These include, variation of configurations based on the edge location (because edges at a base station level, for instance, may have more constrained performance); configurations based on the type of compute, memory, storage, fabric, acceleration, or like resources available to edge locations, tiers of locations, or groups of locations; the service, security, and management and orchestration capabilities; and related objectives to achieve usability and performance of end services.
Edge computing is a developing paradigm where computing is performed at or closer to the “edge” of a network, typically through the use of a compute platform implemented at base stations, gateways, network routers, or other devices which are much closer to end point devices producing and consuming the data. For example, edge gateway servers may be equipped with pools of memory and storage resources to perform computation in real-time for low latency use-cases (e.g., autonomous driving or video surveillance) for connected client devices. Or as an example, base stations may be augmented with compute and acceleration resources to directly process service workloads for connected user equipment, without further communicating data via backhaul networks. Or as another example, central office network management hardware may be replaced with compute hardware that performs virtualized network functions and offers compute resources for the execution of services and consumer functions for connected devices. likewise, within edge computing deployments, there may be scenarios in services which the compute resource will be “moved” to the data, as well as scenarios in which the data will be “moved” to the compute resource. Or as an example, base station (or satellite vehicle) compute, acceleration and network resources can provide services in order to scale to workload demands on an as needed basis by activating dormant capacity (subscription, capacity on demand) in order to manage corner cases, emergencies or to provide longevity for deployed resources over a significantly longer implemented lifecycle.
In contrast to the network architecture of
Depending on the real-time requirements in a communications context, a hierarchical structure of data processing and storage nodes may be defined in an edge computing deployment involving satellite connectivity. For example, such a deployment may include local ultra-low-latency processing, regional storage and processing as well as remote cloud data-center based storage and processing. Key performance indicators (KPIs) may be used to identify where sensor data is best transferred and where it is processed or stored. This typically depends on the ISO layer dependency of the data. For example, lower layer (PHY, MAC, routing, etc.) data typically changes quickly and is better handled locally in order to meet latency requirements. Higher layer data such as Application Layer data is typically less time critical and may be stored and processed in a remote cloud data-center.
Examples of latency with terrestrial networks, resulting from network communication distance and processing time constraints, may range front less than a millisecond (ms) when among the endpoint layer 4900, under 5 ms at the edge devices layer 4910, to even between 10 to 40 ms when communicating with nodes at the network access layer 4920. (Variation to these latencies is expected with use of non-terrestrial networks). Beyond the edge cloud 4810 are core network 4930 and cloud data center 4940 layers, each with increasing latency (e.g., between 50-60 ms at the core network layer 4930, to 100 or more ms at the cloud data center layer). As a result, operations at a core network data center 4935 or a cloud data center 4945, with latencies of at least 50 to 100 ms or more, will not be able to accomplish many time-critical functions of the use cases 4905. Each of these latency values are provided for purposes of illustration and contrast; it will be understood that the use of other access network mediums and technologies may further reduce the latencies. in some examples, respective portions of the network may be categorized as “close edge”, “local edge”, “near edge”, “middle edge”, or “far edge” layers, relative to a network source and destination. For instance, from the perspective of the core network data center 4935 or a cloud data center 4945, a central office or content data network may be considered as being located within a “near edge” layer (“near” to the cloud, having high latency values when communicating with the devices and endpoints of the use cases 4905), whereas an access point, base station, on-premise server, or network gateway may be considered as located within a “far edge” layer (“far” from the cloud, having low latency values when communicating with the devices and endpoints of the use cases 4905). It will be understood that other categorizations of a particular network layer as constituting a “close”, “local”, “near”, “middle”, or “far” edge may be based on latency, distance, number of network hops, or other measurable characteristics, as measured from a source in arty of the network layers 4900-4940.
The various use cases 4905 may access resources under usage pressure from incoming streams, due to multiple services utilizing the edge cloud. To achieve results with low latency, the services executed within the edge cloud 4810 balance varying requirements in terms of: (a) Priority (throughput or latency) and Quality of Service (QoS) (e.g., traffic for an autonomous car may have higher priority than a temperature sensor in terms of response time requirement; or, a performance sensitivity/bottleneck may exist at a. compute/accelerator, memory, storage, or network resource, depending on the application); (h) Reliability and Resiliency (e.g., some input streams need to be. acted upon and the traffic routed with mission-critical reliability, where as some other input streams may be tolerate an occasional failure, depending on the application); and (c) Physical constraints (e.g., power, cooling and form-factor).
The end-to-end service view for these use cases involves the concept of a service-flow and is associated with a transaction. The transaction details the overall service requirement for the entity consuming the service, as well as the associated services for the resources, workloads, workflows, and business functional and business level requirements. The services executed with the “terms” described may be managed at each layer in a way to assure real time, and runtime contractual compliance for the transaction during the lifecycle of the service. When a component in the transaction is missing its agreed to SLA, the system as a whole (components in the transaction) may provide the ability to (1) understand the impact of the SLA violation, and (2) augment other components in the system to resume overall transaction SLA, and (3) implement steps to remediate.
Thus, with these variations and service features in mind, edge computing within the edge cloud 4810 may provide the ability to serve and respond to multiple applications of the use cases 4905 (e.g., object tracking, video surveillance, connected cars, etc.) in real-time or near real-time, and meet. ultra-low latency requirements for these multiple applications. These advantages enable a whole new class of applications (Virtual Network Functions (VNFs), Function as a Service (FaaS), Edge as a Service (EaaS), etc.), which cannot leverage conventional cloud computing due to latency or other limitations. This is especially relevant for applications which require connection via satellite, and the additional latency that trips via satellite would require to the cloud.
However, with the advantages of edge computing comes the following caveats. The devices located at the edge are often resource constrained and therefore there is pressure on usage of edge resources. Typically, this is addressed through the pooling of memory and storage resources for use by multiple users (tenants) and devices. The edge may be power and cooling constrained and therefore the power usage needs to be accounted for by the applications that are consuming the most power. There may be inherent power-performance tradeoffs in these pooled memory resources, as many of them are likely to use emerging memory technologies, where more power requires greater memory bandwidth. Likewise, improved security of hardware and root of trust trusted functions are also required, because edge locations may be unmanned and may even need permissioned access (e.g., when housed in a third-party location). Such issues are magnified in the edge cloud 4810 in a multi-tenant, multi-owner, or multi-access setting, where services and applications are requested by many users, especially as network usage dynamically fluctuates and. the composition of the multiple stakeholders, use cases, and services changes.
At a more generic level, an edge computing system may be described to encompass any number of deployments at the previously discussed layers operating in the edge cloud 4810 (network layers 4900-4940), which provide coordination from client and distributed computing devices. One or more edge gateway nodes, one or more edge aggregation nodes, and one or more core data centers may be distributed across layers of the network to provide an implementation of the edge computing system by or on behalf of a telecommunication service provider (“telco”, or “TSP”), internet-of-things service provider, cloud service provider (CSP), enterprise entity, or any other number of entities. Various implementations and configurations of the edge computing system may be provided dynamically, such as when orchestrated to meet service objectives.
Consistent with the examples provided herein, a client compute node. may be embodied as any type of endpoint component, circuitry, device, appliance, or other thing capable of communicating as a producer or consumer of data. Further, the label “node” or “device” as used in the edge computing system does not necessarily mean that such node or device operates in a client or agent/minion/follower role; rather, arty of the nodes or devices in the edge computing system refer to individual entities, nodes, or subsystems which include discrete or connected hardware or software configurations to facilitate or use the edge cloud 4810.
As such, the edge cloud 4810 is formed from network components and functional features operated by and within edge gateway nodes, edge aggregation nodes, or other edge compute nodes among network layers 4910-4930. The edge cloud 4810 thus may be embodied as any type of network that provides edge computing and/or storage resources which are proximately located to radio access network (RAN) capable endpoint devices (e.g., mobile computing devices, IoT devices, smart devices, etc.), which are discussed herein. In other words, the edge cloud 4810 may be envisioned as an “edge” which connects the endpoint devices and traditional network access points that serve as an ingress point into service provider core networks, including mobile carrier networks (e.g., Global System for Mobile Communications (GSM) networks, Long-Term Evolution (LTE) networks, 5G/6G networks, etc.), while also providing storage and/or compute capabilities. Other types and forms of network access (e.g., Wi-Fi, long-range wireless, wired networks including optical networks) may also be utilized in place of or in combination with such 3GPP carrier networks.
The network components of the edge cloud 4810 may be servers, multi-tenant servers, appliance computing devices, and/or any other type of computing devices. For example, a node of the edge cloud 4810 may include an appliance computing device that is a self-contained electronic device including a housing, a chassis, a case or a shell. In some circumstances, the housing may be dimensioned for portability such that it can be carried by a human and/or shipped. Example housings may include materials that form one or more exterior surfaces that partially or fully protect contents of the appliance, in which protection may include weather protection, hazardous environment protection (e.g., EMI, vibration, extreme temperatures), and/or enable submergibility. Example housings may include power circuitry to provide power for stationary and/or portable implementations, such as AC power inputs, DC power inputs, AC/DC or DC/AC converter(s), power regulators, transformers, charging circuitry, batteries, wired inputs and/or wireless power inputs. Example housings and/or surfaces thereof may include or connect to mounting hardware to enable attachment to structures such as buildings, telecommunication structures (e.g., poles, antenna structures, etc.) and/or racks (e.g., server racks, blade mounts, etc.). Example housings and/or surfaces thereof may support one or more sensors (e.g., temperature sensors, vibration sensors, light sensors, acoustic sensors, capacitive sensors, proximity sensors, etc.). One or more such sensors may be contained in, carried by, or otherwise embedded in the surface and/or mounted to the surface of the appliance. Example housings and/or surfaces thereof may support mechanical connectivity, such as propulsion hardware (e.g., wheels, propellers, etc.) and/or articulating hardware (e.g., robot arms, pivotable appendages, etc.). In some circumstances, the sensors may include any type of input devices such as user interface hardware (e.g., buttons, switches, dials, sliders, etc.). In some circumstances, example housings include output devices contained in, carried by, embedded therein and/or attached thereto. Output devices may include displays, touchscreens, lights, LEDs, speakers, I/O ports (e.g., USB), etc. In some circumstances, edge devices are devices presented in the network for a specific purpose (e.g., a traffic light), but may have processing and/or other capacities that may be utilized for other purposes. Such edge devices may be independent from other networked devices and may be provided with a housing having a form factor suitable for its primary purpose; yet be available for other compute tasks that do not interfere with its primary task. Edge devices include Internet of Things devices. The appliance computing device may include hardware and software components to manage local issues such as device temperature, vibration, resource utilization, updates, power issues, physical and network security, etc. Example hardware for implementing an appliance computing device is described in conjunction with
In
At a more generic level, an edge computing system may be described to encompass any number of deployments operating in the edge cloud 4810, which provide coordination from client and distributed computing devices.
Each node or device of the edge computing system is located at a particular layer corresponding to layers 4900, 4910, 4920, 4930, 4940. For example, the client compute nodes 5102 are each located at an endpoint layer 4900, while each of the edge gateway nodes 5112 are located at an edge devices layer 4910 (local level) of the edge computing system. Additionally, each of the edge aggregation nodes 5122 (and/or fog devices 5124, if arranged or operated with or among a fog networking configuration 5126) are located at a network access layer 4920 (an intermediate level). Fog computing (or “fogging”) generally refers to extensions of cloud computing to the edge of an enterprise's network, typically in a coordinated distributed or multi-node network. Some forms of fog computing provide the deployment of compute, storage, and networking services between end devices and cloud computing data centers, on behalf of the cloud computing locations. Such forms of fog computing provide operations that are consistent with edge computing as discussed herein; many of the edge computing aspects discussed herein are applicable to fog networks, fogging, and fog configurations. Further, aspects of the edge computing systems discussed herein may be configured as a fog, or aspects of a fog may be integrated into an edge computing architecture.
The core data center 5132 is located at a core network layer 4930 (e.g., a regional or geographically-central level), while the global network cloud 5142 is located at a cloud data center layer 4940 (e.g., a national or global layer). The use of “core” is provided as a term for a centralized network location deeper in the network—which is accessible by multiple edge nodes or components; however, a “core” does not necessarily designate the “center” or the deepest location of the network. Accordingly, the core data center 5132 may be located within, at, or near the edge cloud 4810.
Although an illustrative number of client compute nodes 5102, edge gateway nodes 5112, edge aggregation nodes 5122, core data centers 5132, global network clouds 5142 are shown in
Consistent with the examples provided herein, each client compute node 5102 may be embodied as any type of end point component, device, appliance, or “thing” capable of communicating as a producer or consumer of data. Further, the label “node” or “device” as used in the edge computing system does not necessarily mean that such node or device operates in a client or agent/minion/follower role; rather, any of the nodes or devices in the edge computing system refer to individual entities, nodes, or subsystems which include discrete or connected hardware or software configurations to facilitate or use the edge cloud 4810.
As such, the edge cloud 4810 is formed from network components and functional features operated by and within the edge gateway nodes 5112. and the edge aggregation nodes 5122 of layers 4920, 4930, respectively. The edge cloud 4810 may be embodied as any type of network that provides edge computing and/or storage resources which are proximately located to radio access network (RAN) capable endpoint devices (e.g., mobile computing devices, IoT devices, smart devices, etc.), which are shown in
In some examples, the edge cloud 4810 may form a portion of or otherwise provide an ingress point into or across a fog networking configuration 5126 (e.g., a network of fog devices 5124, not shown in detail), which may be embodied as a system-level horizontal and distributed architecture that distributes resources and services to perform a specific function. For instance, a coordinated and distributed network of fog devices 5124 may perform computing, storage, control, or networking aspects in the context of an IoT system arrangement. Other networked, aggregated, and distributed functions may exist in the edge cloud 4810 between the cloud data center layer 4940 and the client endpoints (e.g., client compute nodes 5102). Some of these are discussed in the following sections in the context of network functions or service virtualization, including the use of virtual edges and virtual services which are orchestrated for multiple stakeholders.
The edge gateway nodes 5112 and the edge aggregation nodes 5122 cooperate to provide various edge services and security to the client compute nodes 5102. Furthermore, because each client compute node 5102 may be stationary or mobile, each edge gateway node 5112. may cooperate with other edge gateway devices to propagate presently provided edge services and security as the corresponding client compute node 5102 moves about a region. To do so, each of the edge gateway nodes 5112 and/or edge aggregation nodes 5122 may support multiple tenancy and multiple stakeholder configurations, in which services from (or hosted for) multiple service providers and multiple consumers may be supported and coordinated across a single or multiple compute devices.
In further examples, any of the compute nodes or devices discussed with reference to the present computing systems and environment may be fulfilled based on the components depicted in
In the simplified example depicted in
The compute node 5200 may be embodied as any type of engine, device, or collection of devices capable of performing various compute functions. In some examples, the compute node 5200 may be embodied as a single device such as an integrated circuit, an embedded system, a field-programmable gate array (FPGA), a system-on-a-chip (SOC), or other integrated system or device. In the illustrative example, the compute node 5200 includes or is embodied as a processor 5204 and a memory 5206. The processor 5204 may be embodied as any type of processor capable of performing the functions described herein (e.g., executing an application). For example, the processor 5204 may be embodied as a multi-core processor(s), a microcontroller, or other processor or processing/controlling circuit. In some examples, the processor 5204 may be embodied as, include, or be coupled to an FPGA, an application specific integrated circuit (ASIC), reconfigurable hardware or hardware circuitry, or other specialized hardware to facilitate performance of the functions described herein.
The main memory 5206 may be embodied as any type of volatile (e.g., dynamic random access memory (DRAM), etc.) or non-volatile memory or data. storage capable of performing the functions described herein. Volatile memory may be a storage medium that requires power to maintain the state of data stored by the medium. Non-limiting examples of volatile memory may include various types of random access memory (RAM), such as DRAM or static random access memory (SRAM). One particular type of DRAM that may be used in a memory module is synchronous dynamic random access memory (SDRAM).
In one example, the memory device is a block addressable memory device, such as those based on NAND or NOR technologies. A memory device may also include a three-dimensional crosspoint memory device (e.g., Intel 3D XPoint™ memory, other storage class memory), or other byte addressable write-in-place nonvolatile memory devices. The memory device may refer to the die itself and/or to a packaged memory product. In some examples, 3D crosspoint memory (e.g., Intel 3D XPoint™ memory) may comprise a transistor-less stackable cross point architecture in which memory cells sit at the intersection of word lines and bit lines and are individually addressable and in which bit storage is based on a change in hulk resistance, in some examples, all or a portion of the main memory 5206 may be integrated into the processor 5204. The main memory 5206 may store various software and data used during operation such as one or more applications, data operated on by the application(s), libraries, and drivers.
The compute circuitry 5202 is communicatively coupled to other components of the compute node 5200 via the I/O subsystem 5208, which may be embodied as circuitry and/or components to facilitate input/output operations with the compute circuitry 5202 (e.g., with the processor 5204 and/or the main memory 5206) and other components of the compute circuitry 5202. For example, the I/O subsystem 5208 may be embodied as, or otherwise include, memory controller hubs, input/output control hubs, integrated sensor hubs, firmware devices, communication links (e.g., point-to-point links, bus links, wires, cables, light guides, printed circuit board traces, etc.), and/or other components and subsystems to facilitate the input/output operations. In some examples, the I/O subsystem 5208 may form a portion of a system-on-a-chip (SoC) and be incorporated, along with one or more of the processor 5204, the main memory 5206, and other components of the compute circuitry 5202, into the compute circuitry 5202.
The one or more illustrative data storage devices 5210 may be embodied as any type of devices configured for short-term or long-term storage of data such as, for example, memory devices and circuits, memory cards, hard disk drives, solid-state drives, or other data storage devices. Each data storage device 5210 may include a system partition that stores data and firmware code for the data storage device 5210. Each data storage device 5210 may also include one or more operating system partitions that store data files and executables for operating systems depending on, for example, the type of compute node 5200.
The communication circuitry 5212 may be embodied as any communication circuit, device, or collection thereof, capable of enabling communications over a network between the compute circuitry 5202 and another compute device (e.g., an edge gateway node 5112 of an edge computing system). The communication circuitry 5212 may be configured to use any one or more communication technology (e.g., wired or wireless communications) and associated protocols (e.g., a cellular networking protocol such a 3GPP 4G or 5G standard, a wireless local area network protocol such as IEEE 802.111/Wi-Fi®, a wireless wide area network protocol, Ethernet, Bluetooth®, etc.) to effect such communication.
The illustrative communication circuitry 5212 includes a network interface controller (NIC) 5220, which may also be referred to as a host fabric interface (HFI). The NIC 5220 may be embodied as one or more add-in-boards, daughter cards, network interface cards, controller chips, chipsets, or other devices that may be used by the compute node 5200 to connect with another compute device (e.g., an edge gateway node 5112). In some examples, the NIC 5220 may be embodied as part of a system-on-a-chip (SoC) that includes one or more processors, or included on a multichip package that also contains one or more processors. In some examples, the NIC 5220 may include a local processor (not shown) and/or a local memory (not shown) that are both local to the NIC 5220. In such examples, the local processor of the NIC 5220 may be capable of performing one or more of the functions of the compute circuitry 5202 described herein. Additionally or alternatively, in such examples, the local memory of the NIC 5220 may be integrated into one or more components of the client compute node at the board level, socket level, chip level, and/or other levels.
Additionally, in some examples, each compute node 5200 may include one or more peripheral devices 5214. Such peripheral devices 5214 may include any type of peripheral device found in a compute device or server such as audio input devices, a display, other input/output devices, interface devices, and/or other peripheral devices, depending on the particular type of the compute node 5200. In further examples, the compute node 5200 may be embodied by a respective edge compute node in an edge computing system (e.g., client compute node 5102, edge gateway node 5112, edge aggregation node 5122) or like forms of appliances, computers, subsystems, circuitry, or other components.
In a more detailed example,
The edge computing node 5250 may include processing circuitry in the form of a processor 5252, which may be a microprocessor, a multi-core processor, a multithreaded processor, an ultra-low voltage processor, an embedded processor, or other known processing elements. The processor 5252 may be a part of a system on a chip (SoC) in which the processor 5252 and other components are formed into a single integrated circuit, or a single package, such as the Edison™ or Galileo™ SoC boards from Intel Corporation, Santa Clara, Calif. As an example, the processor 5252 may include an Intel® Architecture Core™ based processor, such as a Qsuark™, an Atora™, a Xeon™, an i3, an i5, an i7, an i9, or an MCU-class processor, or another such processor available from Intel®. However, any number other processors may be used, such as available from Advanced Micro Devices, Inc. (AMD) of Sunnyvale, Calif., a MIPS-based design from MIPS Technologies, Inc, of Sunnyvale, Calif., an ARM-based design licensed from ARM Holdings, Ltd. or a customer thereof, or their licensees or adopters. The processors may include units such as an A5-A13 processor from Apple® Inc., a Snapdragon™ processor from Qualcomm® Technologies, Inc., or an OMAP™ processor from Texas Instruments, Inc.
The processor 5252 may communicate with a system memory 5254 over an interconnect 5256 (e.g., a bus). Any number of memory devices may be used to provide for a given amount of system memory. As examples, the memory may be random access memory (RAM) in accordance with a Joint Electron Devices Engineering Council (JEDEC) design such as the DDR or mobile DDR standards (e.g., LPDDR, LPDDR2, LPDDR3, or LPDDR4). In particular examples, a memory component may comply with a DRAM standard promulgated by JEDEC, such as JESD79F for DDR SDRAM, JESD79-2F for DDR2 SDRAM, JESD79-3F for DDR3 SDRAM, JESD79-4A for DDR4 SDRAM, JESD209 for Low Power DDR (LPDDR), JESD209-2 for LPDDR2, JESD209-3 for LPDDR3, and JESD209-4 for LPDDR4. Such standards (and similar standards) may be referred to as DDR-based standards and communication interfaces of the storage devices that implement such standards may be referred to as DDR-based interfaces. In various implementations, the individual memory devices may be of any number of different package types such as single die package (SDP), dual die package (DDP) or quad die package (Q17P). These devices, in some examples, may be directly soldered onto a motherboard to provide a lower profile solution, while in other examples the devices are configured as one or more memory modules that in turn couple to the motherboard by a given connector. Any number of other memory implementations may be used, such as other types of memory modules, e.g., dual inline memory modules (DIMMs) of different varieties including but not limited to microDIMMs or MiniDIMMs.
To provide for persistent storage of information such as data, applications, operating systems and so forth, a storage 5258 may also couple to the processor 5252 via the interconnect 5256. In an example, the storage 5258 may be implemented via a solid-state disk drive (SSDD). Other devices that may be used for the storage 5258 include flash memory cards, such as SD cards, microSD cards, XD picture cards, and the like, and USB flash drives. In an example, the memory device may be or may include memory devices that use chalcogenide glass, multi-threshold level NAND flash memory, NOR flash memory, single or multi-level Phase Change Memory (PCM), a resistive memory, nanowire memory, ferroelectric transistor random access memory (FeTRAM), anti-ferroelectric memory, magneto-resistive random access memory (MRAM) memory that incorporates memristor technology, resistive memory including the metal oxide base, the oxygen vacancy base and the conductive bridge Random Access Memory (CB-RAM), or spin transfer torque (STT)-MRAM, a spintronic magnetic junction memory based device, a magnetic tunneling junction (MTJ) based device, a DW (Domain Wall) and SOT (Spin Orbit Transfer) based device, a thyristor based memory device, or a combination of any of the above, or other memory.
In low power implementations, the storage 5258 may be on-die memory or registers associated with the processor 5252. However, in some examples, the storage 5258 may be implemented using a micro hard disk drive (HDD). Further, any number of new technologies may be used for the storage 5258 in addition to, or instead of, the technologies described, such resistance change memories, phase change memories, holographic memories, or chemical memories, among others.
The components may communicate over the interconnect 5256. The interconnect 5256 may include any number of technologies, including industry standard architecture (ISA), extended ISA (EISA), peripheral component. interconnect (PCI), peripheral component interconnect extended (PCIx), PCI express (PCIe),VvILink, or any number of other technologies. The interconnect 5256 may be a proprietary bus, for example, used in an SoC based system. Other bus systems may be included, such as an 12C interface, an SN interface, point to point interfaces, and a power bus, among others.
The interconnect 5256 may couple the processor 5252 to a transceiver 5266, for communications with the connected edge devices 5262. The transceiver 5266 may use any number of frequencies and protocols, such as 2.4 Gigahertz (GHz) transmissions under the IEEE 802.15.4 standard, using the Bluetooth® low energy (BLE) standard, as defined by the Bluetooth® Special Interest Group, or the ZigBee® standard, among others. Any number of radios, configured for a particular wireless communication protocol, may be used for the connections to the connected edge devices 5262. For example, a wireless local area network (WLAN) unit may be used to implement Wi-Fi® communications in accordance with the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard. In addition, wireless wide area communications, e.g., according to a cellular or other wireless wide area protocol, may occur via a wireless wide area network (WWAN) unit.
The wireless network transceiver 5266 (or multiple transceivers) may communicate using multiple standards or radios for communications at a different range. For example, the edge computing node 5250 may communicate. with close devices, e.g., within about 10 meters, using a local transceiver based on BLE, or another low power radio, to save power. More distant connected edge devices 5262, e.g., within about 50 meters, may be reached over ZigBee or other intermediate power radios. Both communications techniques may take place over a single radio at different power levels or may take place over separate transceivers, for example, a local transceiver using BLE and a separate mesh transceiver using ZigBee.
A wireless network transceiver 5266 (e.g., a radio transceiver) may be included to communicate with devices or services in the edge cloud 5290 via local or wide area network protocols. The wireless network transceiver 5266 may be an LPWA transceiver that follows the IEEE 802.15.4, or IEEE 802.15.4g standards, among others. The edge computing node 5250 may communicate over a wide area using LoRaWAN™ (Long Range Wide Area Network) developed by Semtech and the LoRa Alliance. The techniques described herein are not limited to these technologies but may be used with any number of other cloud transceivers that implement long range, low bandwidth communications, such as Sigfox, and other technologies. Further, other communications techniques, such as time-slotted channel hopping, described in the IEEE 802.15.4e specification may be used.
Any number of other radio communications and protocols may be used in addition to the systems mentioned for the wireless network transceiver 5266, as described herein. For example, the transceiver 5266 may include a cellular transceiver that uses spread spectrum (SPA/SAS) communications for implementing high-speed communications. Further, any number of other protocols may be used, such as Wi-Fi® networks for medium speed communications and provision of network communications. The transceiver 5266 may include radios that are compatible with any number of 3GPP (Third Generation Partnership Project) specifications, such as Long Term Evolution (LTE) and 5th Generation (5G) communication systems, discussed in further detail at the end of the present disclosure. A network interface controller (NIC) 5268 may be included to provide a wired communication to nodes of the edge cloud 5290 or to other devices, such as the connected edge devices 5262 (e.g., operating in a mesh). The wired communication may provide an Ethernet connection or may be based on other types of networks, such as Controller Area Network (CAN), Local Interconnect Network (LIN), DeviceNet, ControlNet, Data Highway+, PROFIBUS, or PROFINET, among many others. An additional NIC 5268 may be included to enable connecting to a second network, for example, a first NIC 5268 providing communications to the cloud over
Ethernet, and a second NIC 5268 providing communications to other devices over another type of network.
Given the variety of types of applicable communications from the device to another component or network, applicable communications circuitry used by the device may include or be embodied by any one or more of components 5264, 5266, 5268, or 5270. Accordingly, in various examples, applicable means for communicating (e.g., receiving, transmitting, etc.) may be embodied by such communications circuitry.
The edge computing node 5250 may include or be coupled to acceleration circuitry 5264, which may be embodied by one or more AI accelerators, a neural compute stick, neuromorphic hardware, an FPGA, an arrangement of GPUs, one or more SoCs, one or more CPUs, one or more digital signal processors, dedicated ASICs, or other forms of specialized processors or circuitry designed to accomplish one or more specialized tasks. These tasks may include AI processing (including machine learning, training, inferencing, and classification operations), visual data processing, network data processing, object detection, rule analysis, or the like. Accordingly, in various examples, applicable means for acceleration may be embodied by such acceleration circuitry.
The interconnect 5256 may couple the processor 5252 to a sensor hub or external interface 5270 that is used to connect additional devices or subsystems. The devices may include sensors 5272, such as accelerometers, level sensors, flow sensors, optical light sensors, camera sensors, temperature sensors, a global positioning system (GPS) sensors, pressure sensors, barometric pressure sensors, and the like. The hub or interface 5270 further may be used to connect the edge computing node 5250 to actuators 5274, such as power switches, valve actuators, an audible sound generator, a visual warning device, and the like.
In some optional examples, various input/output (I/O) devices may be present within or connected to, the edge computing node 5250. For example, a display or other output device 5284 may be included to show information, such as sensor readings or actuator position. An input device 5286, such as a touch screen or keypad may be included to accept input. An output device 5284 may include any number of forms of audio or visual display, including simple visual outputs such as binary status indicators (e.g., LEDs) and multi-character visual outputs, or more complex outputs such as display screens (e.g., LCD screens), with the output of characters, graphics, multimedia objects, and the like being generated or produced from the operation of the edge computing node 5250.
A battery 5276 may power the edge computing node 5250, although, in examples in which the edge computing node 5250 is mounted in a fixed location, it may have a power supply coupled to an electrical grid. The battery 5276 may be a lithium ion battery, or a metal-air battery, such as a zinc-air battery, an aluminum-air battery, a lithium-air battery, and the like.
A battery monitor/charger 5278 may be included in the edge computing node 5250 to track the state of charge (SoCh) of the battery 5276. The battery monitor/charger 5278 may be used to monitor other parameters of the battery 5276 to provide failure predictions, such as the state of health (SoH) and the state of function (SoF) of the battery 5276. The battery monitor/charger 5278 may include a battery monitoring integrated circuit, such as an LTC4020 or an LTC2990 from Linear Technologies, an ADT7488A from ON Semiconductor of Phoenix Ariz., or an IC from the UCD90xxx family from Texas Instruments of Dallas, Tex. The battery monitor/charger 5278 may communicate the information on the battery 5276 to the processor 5252 over the interconnect 5256. The battery monitor/charger 5278 may also include an analog-to-digital (ADC) converter that enables the processor 5252 to directly monitor the voltage of the battery 5276 or the current flow from the battery 5276. The battery parameters may be used to determine actions that the edge computing node 5250 may perform, such as transmission frequency, mesh network operation, sensing frequency, and the like.
A power block 5280, or other power supply coupled to a grid, may be coupled with the battery monitor/charger 5278 to charge the battery 5276. In some examples, the power block 5280 may be replaced with a wireless power receiver to obtain the power wirelessly, for example, through a loop antenna in the edge computing node 5250. A wireless battery charging circuit, such as an LTC4020 chip from Linear Technologies of Milpitas, Calif., among others, may be included in the battery monitor/charger 5278. The specific charging circuits may be selected based on the size of the battery 5276, and thus, the current required. The charging may be performed using the Airfuel standard promulgated by the Airfuel Alliance, the Qi wireless charging standard promulgated by the Wireless Power Consortium, or the Rezence charging standard, promulgated by the Alliance for Wireless Power, among others.
The storage 5258 may include instructions 5282 in the form of software, firmware, or hardware commands to implement the techniques described herein. Although such instructions 5282 are shown as code blocks included in the memory 5254 and the storage 5258, it may be understood that any of the code blocks may be replaced with hardwired circuits, for example, built into an application specific integrated circuit (ASIC).
In an example, the instructions 5282. provided via the memory 5254, the storage 5258, or the processor 5252 may be embodied as a non-transitory, machine-readable medium 5260 including code to direct the processor 5252 to perform electronic operations in the edge computing node 5250. The processor 5252 may access the non-transitory, machine-readable medium 5260 over the interconnect 5256. For instance, the non-transitory, machine-readable medium 5260 may be embodied by devices described for the storage 5258 or may include. specific storage units such as optical disks, flash drives, or any number of other hardware devices. The non-transitory, machine-readable medium 5260 may include instructions to direct the processor 5252 to perform a specific sequence or flow of actions, for example, as described with respect to the flowchart(s) and block diagram(s) of operations and functionality depicted above. As used in, the terms “machine-readable medium” and “computer-readable medium” are interchangeable.
In further examples, a machine-readable, medium also includes any tangible medium that is capable of storing, encoding or carrying instructions for execution by a machine and that cause the machine to perform any one or more of the methodologies of the present disclosure or that is capable of storing, encoding or carrying data structures utilized by or associated with such instructions. A “machine-readable medium” thus may include but is not limited to, solid-state memories, and optical and magnetic media. Specific examples of machine-readable media include non-volatile memory, including but not limited to, by way of example, semiconductor memory devices (e.g., electrically programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM)) and flash memory devices; magnetic disks such as internal hard disks and removable disks; magneto-optical disks; and CD-ROM and DVD-ROM disks. The instructions embodied by a machine-readable medium may further be transmitted or received over a communications network using a transmission medium via a network interface device utilizing any one of a number of transfer protocols (e.g., HTTP).
A machine-readable medium may be provided by a storage device or other apparatus which is capable of hosting data in a non-transitory format. In an example, information stored or otherwise provided on a machine-readable medium may be representative of instructions, such as instructions themselves or a format from which the instructions may be derived. This format from which the instructions may be derived may include source code, encoded instructions (e.g., in compressed or encrypted form), packaged instructions (e.g., split into multiple packages), or the like. The information representative of the instructions in the machine-readable medium may be processed by processing circuitry into the instructions to implement any of the operations discussed herein. For example, deriving the instructions from the information (e.g., processing by the processing circuitry) may include: compiling (e.g., from source code, object code, etc.), interpreting, loading, organizing (e.g., dynamically or statically linking), encoding, decoding, encrypting, unencrypting, packaging, unpackaging, or otherwise manipulating the information into the instructions.
In an example, the derivation of the instructions may include assembly, compilation, or interpretation of the information (e.g., by the processing circuitry) to create the instructions from some intermediate or preprocessed format provided by the machine-readable medium. The information, when provided in multiple parts, may be combined, unpacked, and modified to create the instructions. For example, the information may be in multiple compressed source code packages (or object code, or binary executable code, etc.) on one or several remote servers. The source code packages may be encrypted when in transit over a network and decrypted, uncompressed, assembled (e.g., linked) if necessary, and compiled or interpreted (e.g., into a library, stand-alone executable, etc.) at a local machine, and executed by the local machine.
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Additional Implementation Examples and Notes
An example implementation is a method performed by an edge computing node, the edge computing node connected to a satellite communications network, with a method comprising: receiving, from an endpoint device, a request for compute processing; identifying a location for the compute processing, the location selected from among: compute resources provided locally at the edge computing node, or compute resources provided at a remote service accessible via the satellite network; and causing use of the compute processing at the identified location in accordance with service requirements of the compute processing; wherein satellite network is intermittently available, wherein the use of the compute processing is coordinated based on the availability of the satellite network.
A further example implementation is a method performed by the edge computing node, where the satellite network is a low earth orbit (LEO) satellite network, wherein the LEO satellite network provides coverage to the edge computing node from among a plurality of satellite vehicles based on orbit positions of the satellite vehicles.
A further example implementation is a method performed by the edge computing node, where the LEO satellite network includes a plurality of constellations, each of the plurality of constellations providing a respective plurality of satellite vehicles, and wherein network coverage to the edge computing node is based on position of the plurality of constellations.
A further example implementation is a method performed by the edge computing node, where the edge computing node is provided at a base station, the base station to provide wireless network connectivity to the endpoint device.
A further example implementation is a method performed by the edge computing node, where the wireless network connectivity is provided by a 4G Long Term Evolution (LTE) or 5G network operating according to a 3GPP standard, or a RAN operating according to a O-RAN Alliance standard.
A further example implementation is a method performed by the edge computing node, where the location for the compute processing is identified based on a latency of communications via the satellite network and a time for processing at the compute resources.
A further example implementation is a method performed by the edge computing node, where the location for the compute processing is identified based on a service level agreement associated with the request for compute processing.
A further example implementation is a method performed by the edge computing node, where the location for the compute processing is identified based on instructions from a network orchestrator, wherein the network orchestrator provides orchestration for a plurality of edge computing locations including the edge computing node.
A further example implementation is a method performed by the edge computing node, including returning results of the compute processing to the endpoint device, wherein the compute processing includes processing of a workload.
A further example implementation is a method performed by the edge computing node, where the location for the compute processing is identified based on (i) a type of the workload and (ii) availability of the compute resources at the edge computing node to locally process the type of the workload.
Another example implementation is a method performed by an endpoint client device, the endpoint client device capable of network connectivity with a first satellite network and with a second terrestrial network, the method comprising: identifying a workload for compute processing; determining a location for the compute processing of the workload, the location selected from among: compute resources provided at an edge computing node accessible via the second terrestrial network, or compute resources provided at a remote service accessible via the first satellite network; and communicating the workload to the identified location; wherein network connectivity with the satellite network is provided intermittently based on availability of the satellite network.
A further example implementation is a method performed by the endpoint client device, where the satellite network is a low earth orbit (LEO) satellite network, wherein the LEO satellite network provides coverage to the endpoint client device from among a plurality of satellite vehicles based on orbit positions of the satellite vehicles.
A further example implementation is a method performed by the endpoint client device, where the LEO satellite network includes a plurality of constellations, each of the plurality of constellations providing a respective plurality of satellite vehicles, wherein network coverage to the endpoint client device is based on position of the plurality of constellations.
A further example implementation is a method performed by the endpoint client device, where the edge computing node is provided at a base station of the second terrestrial network, the base station to provide wireless network connectivity to the endpoint client device.
A further example implementation is a method performed by the endpoint client device, where the wireless network connectivity is provided by a 4G Long Term Evolution (LTE) or 5G network operating according to a 3GPP standard, or a RAN operating according to a O-RAN Alliance standard.
A further example implementation is a method performed by the endpoint client device, where the location for the compute processing is determined based on a latency of communications via the first satellite network and a time for processing at the compute resources.
A further example implementation is a method performed by the endpoint client device, where the location for the compute processing is identified based on a service level agreement associated with the workload.
A further example implementation is a method performed by the endpoint client device, where the location for the compute processing is identified based on instructions from a network orchestrator, wherein the network orchestrator provides orchestration for a plurality of edge computing locations including the edge computing node.
A further example implementation is a method performed by the endpoint client device, including receiving results of the compute processing of the workload.
A further example implementation is a method performed by the endpoint client device, where the location for the compute processing is identified based on (i) a type of the workload and (ii) availability of the compute resources at the edge computing node to locally process the type of the workload.
An example implementation is an edge computing system, provided via low-earth orbit satellite connectivity, including respective edge processing devices and nodes to invoke or perform the operations of Examples A1-A15, B1-B25, C1-C12, D1-D20, E1-E15, F1-F12, G1-G15, H1-H16, I1-I13, or other subject matter described herein.
Another example implementation is a client endpoint node, operable to use low-earth orbit satellite connectivity, directly or via another wireless network, to invoke or perform the operations of Examples A1-A15, B1-B25, C1-C12, D1-D20, E1-E15, F1-F12, G1-G15, H1-H16, I1-I13, or other subject matter described herein.
Another example implementation is an aggregation node, network hub node, gateway node, or core data processing node, performing communications via low-earth orbit satellite connectivity, and located within or coupled to an edge computing system, operable to invoke or perform the operations of Examples A1-A15, B1-B25, C1-C12, D1-D20, E1-E15, F1-F12, G1-G15, H1-H16, I1-I13, or other subject matter described herein.
Another example implementation is an access point, base station, road-side unit, street-side unit, or on-premise unit, performing communications via low-earth orbit satellite connectivity, and located within or coupled to an edge computing system, operable to invoke or perform the operations of Examples A1-A15, B1-B25, C1-C12, D1-D20, E1-E15, F1-F12, G1-G15, H1-H16, I1-I13, or other subject matter described herein.
Another example implementation is an edge node, accessible via low-earth orbit satellite connectivity, operating as an edge provisioning node, service orchestration node, application orchestration node, or multi-tenant management node, within or coupled to an edge computing system, operable to invoke or perform the operations of Examples A1-A15, B1-B25, C1-C12, D1-D20, E1-E15, F1-F12, G1-G15, H1-H16, I1-I13, or other subject matter described herein.
Another example implementation is an edge node, accessible via low-earth orbit satellite connectivity, operating an edge provisioning service, application or service orchestration service, virtual machine deployment, container deployment, function deployment, and compute management, within or coupled to an edge computing system, operable to invoke or perform the operations of Examples A1-A15, B1-B25, C1-C12, D1-D20, E1-E15, F1-F12, G1-G15, H1-H16, I1-I13, or other subject matter described herein.
Another example implementation is an edge computing system, provided via low-earth orbit satellite connectivity, including aspects of network functions, acceleration functions, acceleration hardware, storage hardware, or computation hardware resources, operable to invoke or perform the use cases discussed herein, with use of Examples A1-A15, B1-B25, C1-C12, D1-D20, E1-E15, F1-F12, G1-G15, H1-H16, I1-I13, or other subject matter described herein.
Another example implementation is an edge computing system, provided via low-earth orbit satellite connectivity, adapted for supporting client mobility, vehicle-to-vehicle (V2V), vehicle-to-everything (V2X), or vehicle-to-infrastructure (V2I) scenarios, and optionally operating according to ETSI MEC specifications, operable to invoke or perform the use cases discussed herein, with use of Examples A1-A15, B1-B25, C1-C12, D1-D20, E1-E15, F1-F12, G1-G15, H1-H16, I1-I13, or other subject matter described herein.
Another example implementation is an edge computing system, provided via low-earth orbit satellite connectivity, coupled to equipment providing mobile wireless communications according to 3GPP 40/I,TE or 5G network capabilities, operable to invoke. or perform the use cases discussed herein, with use of Examples A1-A15, B1-B25, C1-C12, D1-D20, E1-E15, F1-F12, G1-G15, H1-H16, I1-I13, or other subject matter described herein.
Another example implementation is an edge computing system, provided via low-earth orbit satellite connectivity, coupled to equipment providing mobile wireless communications according to O-RAN alliance network capabilities, operable to invoke or perform the use cases discussed herein, with use of Examples A1-A15, B1-B25, C1-C12, D1-D20, E1-E15, F1-F12, G1-G15, H1-H16, I1-I13, or other subject matter described herein.
Another example implementation is an edge computing node, operable in a layer of an edge computing network or edge computing system provided via low-earth orbit satellite connectivity, the edge computing node operable as an aggregation node, network hub node, gateway node, or core data processing node, operable in a close edge, local edge, enterprise edge, on-premise edge, near edge, middle, edge, or far edge network layer, or operable in a set of nodes having common latency, timing, or distance characteristics, operable to invoke or perform the use cases discussed herein, with use of Examples A1-A15, B1-B25, C1-C12, D1-D20, E1-E15, F1-F12, G1-G15, H1-H16, I1-I13, or other subject matter described herein.
Another example implementation is networking hardware, acceleration hardware, storage hardware, or computation hardware, with capabilities implemented thereupon, operable in an edge computing system provided via low-earth orbit satellite connectivity, to invoke or perform the use cases discussed herein, with use of Examples A1-A15, B1-B25, C1-C12, D1-D20, E1-E15, F1-F12, G1-G15, H1-H16, I1-I13, or other subject matter described herein.
Another example implementation is an apparatus of an edge computing system, provided via low-earth orbit satellite connectivity, comprising: one or more processors and one or more computer-readable media comprising instructions that, when executed by the one or more processors, cause the one or more processors to invoke or perform the use cases discussed herein, with use of Examples A1-A15, B1-B25, C1-C12, D1-D20, E1-E15, F1-F12, G1-G15, H1-H16, I1-I13, or other subject matter described herein.
Another example implementation is one or more computer-readable storage media operable in an edge computing system, provided via low-earth orbit satellite connectivity, the computer-readable storage media comprising instructions to cause an electronic device of, upon execution of the instructions by one or more processors of the electronic device, to invoke or perform the use cases discussed herein, with use of Examples A1-A15, B1-B25, C1-C12, D1-D20, E1-E15, F1-F12, G1-G15, H1-H16, I1-I13, or other subject matter described herein.
Another example implementation is an apparatus of an edge computing system, provided via low-earth orbit satellite connectivity, comprising means, logic, modules, or circuitry to invoke or perform the use cases discussed herein, with use of Examples A1-A15, B1-B25, C1-C12, D1-D20, E1-E15, F1-F12, G1-G15, H1-H16, I1-I13, or other subject matter described herein.
Another example implementation is an edge computing system, provided via low-earth orbit satellite connectivity, configured to perform use cases provided from one or more of: compute offload, data caching, video processing, network function virtualization, radio access network management, augmented reality, virtual reality, industrial automation, retail services, manufacturing operations, smart buildings, energy management, autonomous driving, vehicle assistance, vehicle communications, internet of things operations, object detection, speech recognition, healthcare applications, gaming applications, or accelerated content processing, with use of Examples A1-A15, B1-B25, C1-C12, D1-D20, E1 E15, F1-F12, G1-G15, H1-H16, I1-I13, or other subject matter described herein.
In the examples above, many references were provided to low-earth orbit (LEO) satellites and constellations. However, it will be understood that the examples above are also relevant to many forms of middle-earth orbit satellites and constellations, geosynchronous orbit satellites and constellations, and other high altitude communication platforms such as balloons. Thus, it will be understood that the techniques discussed for LEO network settings are also applicable to many other network settings.
Although these implementations have been described with reference to specific exemplary aspects, it will be evident that various modifications and changes may be made to these aspects without departing from the broader scope of the present disclosure. Many of the arrangements and processes described herein can be used in combination or in parallel implementations that involve terrestrial network connectivity (where available) to increase network bandwidth/throughput and to support additional edge services. Accordingly, the. specification and drawings are to be regarded in an illustrative rather than a restrictive sense. The accompanying drawings that form a part hereof show, by way of illustration, and not of limitation, specific aspects in which the subject matter may be practiced. The aspects illustrated are described in sufficient detail to enable those skilled in the art to practice the teachings disclosed herein. Other aspects may be utilized and derived therefrom, such that structural and logical substitutions and changes may be made without departing from the scope of this disclosure. This Detailed Description, therefore, is not to be taken in a limiting sense, and the scope of various aspects is defined only by the appended claims, along with the full range of equivalents to which such claims are entitled.
Such aspects of the inventive subject matter may be referred to herein, individually and/or collectively, merely for convenience and without intending to voluntarily limit the scope of this application to any single aspect or inventive concept if more than one is in fact disclosed. Thus, although specific aspects have been illustrated and described herein, it should be appreciated that any arrangement calculated to achieve the same purpose may be substituted for the specific aspects shown. This disclosure is intended to cover any and all adaptations or variations of various aspects. Combinations of the above aspects and other aspects not specifically described herein will be apparent to those of skill in the art upon reviewing the above description.
This application claims the benefit of priority to: U.S. Provisional Patent Application No. 63/077,3:20, filed Sep. 11, 2020; United States Provisional Patent Application No. 63/129,355, filed Dec. 22, 2020; U.S. Provisional Patent Application No. 63/124,520, filed Dec. 11, 2020; U.S. Provisional Patent Application No. 63/104,344, filed Oct. 22, 2020; U.S. Provisional Patent Application No. 63/065,302, filed Aug. 13, 2020; and U.S. Provisional Patent Application No. 63/018,844, filed May 1, 2020; all of which are incorporated by reference herein in their entirety.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/US2020/067007 | 12/24/2020 | WO |
| Number | Date | Country | |
|---|---|---|---|
| 63129355 | Dec 2020 | US | |
| 63124520 | Dec 2020 | US | |
| 63104344 | Oct 2020 | US | |
| 63077320 | Sep 2020 | US | |
| 63065302 | Aug 2020 | US | |
| 63018844 | May 2020 | US |
