Patent Application
20250184944
The present disclosure generally relates to wireless communications. For example, aspects of the present disclosure relate to sidelink (SL) positioning anchor user equipment (UE) selection criteria.
Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources. Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems.
These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate on a municipal, national, regional, and even global level. An example telecommunication standard is 5G New Radio (NR). 5G NR is part of a continuous mobile broadband evolution promulgated by Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with Internet of Things (IoT)), and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine type communications (mMTC), and ultra-reliable low latency communications (URLLC). Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard. Aspects of wireless communication may comprise direct communication between devices, such as in V2X, vehicle-to-vehicle (V2V), and/or device-to-device (D2D) communication. There exists a need for further improvements in V2X, V2V, and/or D2D technology. These improvements may also be applicable to other multi-access technologies and the telecommunication standards that employ these technologies.
The following presents a simplified summary relating to one or more aspects disclosed herein. Thus, the following summary should not be considered an extensive overview relating to all contemplated aspects, nor should the following summary be considered to identify key or critical elements relating to all contemplated aspects or to delineate the scope associated with any particular aspect. Accordingly, the following summary has the sole purpose to present certain concepts relating to one or more aspects relating to the mechanisms disclosed herein in a simplified form to precede the detailed description presented below.
Disclosed are systems, apparatuses, methods and computer-readable media for SL positioning anchor UE selection criteria. According to some aspects, a first network device for wireless communications is provided. The first network device includes at least one memory and at least one processor coupled to the at least one memory and configured to: receive, from a plurality of second network devices, respective anchor selection criteria for each second network device of the plurality of second network devices; determine, based on the respective anchor selection criteria for each second network device of the plurality of second network devices, a network device from the plurality of second network devices as an anchor device for determining a position of the first network device; and determine the position of the first network device based on the anchor device.
In some aspects, a method is provided for wireless communications performed at a first network device. The method includes: receiving, by the first network device from a plurality of second network devices, respective anchor selection criteria for each second network device of the plurality of second network devices; determining, by the first network device based on the respective anchor selection criteria for each second network device of the plurality of second network devices, a network device from the plurality of second network devices as an anchor device for determining a position of the first network device; and determining the position of the first network device based on the anchor device.
In some aspects, an apparatus for wireless communications is provided. The apparatus includes: means for receiving, from a plurality of second network devices, respective anchor selection criteria for each second network device of the plurality of second network devices; means for determining, based on the respective anchor selection criteria for each second network device of the plurality of second network devices, a network device from the plurality of second network devices as an anchor device for determining a position of the first network device; and means for determining the position of the first network device based on the anchor device.
In some aspects, a non-transitory computer-readable medium storing instructions which, when executed by at least one processor, cause the at least one processor to: receive, from a plurality of second network devices, respective anchor selection criteria for each second network device of the plurality of second network devices; determine, based on the respective anchor selection criteria for each second network device of the plurality of second network devices, a network device from the plurality of second network devices as an anchor device for determining a position of the first network device; and determine the position of the first network device based on the anchor device.
In some aspects, a first network device for wireless communications is provided. The first network device includes at least one memory and at least one processor coupled to the at least one memory and configured to: determine anchor selection criteria for the first network device, wherein the anchor selection criteria for the first network device comprises at least one of a type of user equipment (UE) of the first network device, one or more sources for a position of the first network device, an age of the position for the first network device, a validity duration for the position of the first network device, an accuracy duration for the position of the first network device, or assistance data validity for the position of the first network device; and output the anchor selection criteria for transmission to a second network device.
In some aspects, a method is provided for wireless communications performed at a first network device. The method includes: determining anchor selection criteria for the first network device, wherein the anchor selection criteria for the first network device comprises at least one of a type of user equipment (UE) of the first network device, one or more sources for a position of the first network device, an age of the position for the first network device, a validity duration for the position of the first network device, an accuracy duration for the position of the first network device, or assistance data validity for the position of the first network device; and transmitting the anchor selection criteria to a second network device.
In some aspects, an apparatus for wireless communications is provided. The apparatus includes: means for determining anchor selection criteria for the first network device, wherein the anchor selection criteria for the first network device comprises at least one of a type of user equipment (UE) of the first network device, one or more sources for a position of the first network device, an age of the position for the first network device, a validity duration for the position of the first network device, an accuracy duration for the position of the first network device, or assistance data validity for the position of the first network device; and means for transmitting the anchor selection criteria to a second network device.
In some aspects, a non-transitory computer-readable medium storing instructions which, when executed by at least one processor, cause the at least one processor to: determine anchor selection criteria for the first network device, wherein the anchor selection criteria for the first network device comprises at least one of a type of user equipment (UE) of the first network device, one or more sources for a position of the first network device, an age of the position for the first network device, a validity duration for the position of the first network device, an accuracy duration for the position of the first network device, or assistance data validity for the position of the first network device; and output the anchor selection criteria for transmission to a second network device.
Aspects generally include a method, apparatus, system, computer program product, non-transitory computer-readable medium, user equipment, base station, wireless communication device, and/or processing system as substantially described herein with reference to and as illustrated by the drawings and specification.
In some aspects, one or more of the apparatuses described herein is, or is part of, a vehicle (e.g., an automobile, truck, etc., or a component or system of an automobile, truck, etc.), a mobile device (e.g., a mobile telephone or so-called “smart phone” or other mobile device), a wearable device, an extended reality device (e.g., a virtual reality (VR) device, an augmented reality (AR) device, or a mixed reality (MR) device), a personal computer, a laptop computer, a server computer, a robotics device, or other device. In some aspects, the apparatus includes radio detection and ranging (radar) for capturing radio frequency (RF) signals. In some aspects, each apparatus includes one or more light detection and ranging (LIDAR) sensors, radar sensors, or other light-based sensors for capturing light-based (e.g., optical frequency) signals. In some aspects, each apparatus includes a camera or multiple cameras for capturing one or more images. In some aspects, each apparatus further includes a display for displaying one or more images, notifications, and/or other displayable data. In some aspects, the apparatuses described herein can include one or more sensors, which can be used for determining a location of the apparatuses, a state of the apparatuses (e.g., a temperature, a humidity level, and/or other state), and/or for other purposes.
The foregoing has outlined rather broadly the features and technical advantages of examples according to the disclosure in order that the detailed description that follows may be better understood. Additional features and advantages will be described hereinafter. The conception and specific examples disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. Characteristics of the concepts disclosed herein, both their organization and method of operation, together with associated advantages, will be better understood from the following description when considered in connection with the accompanying figures. Each of the figures is provided for the purposes of illustration and description, and not as a definition of the limits of the claims.
While aspects are described in the present disclosure by illustration to some examples, those skilled in the art will understand that such aspects may be implemented in many different arrangements and scenarios. Techniques described herein may be implemented using different platform types, devices, systems, shapes, sizes, and/or packaging arrangements. For example, some aspects may be implemented via integrated chip implementations or other non-module-component based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail/purchasing devices, medical devices, and/or artificial intelligence devices). Aspects may be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components, and/or system-level components. Devices incorporating described aspects and features may include additional components and features for implementation and practice of claimed and described aspects. For example, transmission and reception of wireless signals may include one or more components for analog and digital purposes (e.g., hardware components including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders, and/or summers). It is intended that aspects described herein may be practiced in a wide variety of devices, components, systems, distributed arrangements, and/or end-user devices of varying size, shape, and constitution.
Other objects and advantages associated with the aspects disclosed herein will be apparent to those skilled in the art based on the accompanying drawings and detailed description. This summary is not intended to identify key or essential features of the claimed subject matter, nor is it intended to be used in isolation to determine the scope of the claimed subject matter. The subject matter should be understood by reference to appropriate portions of the entire specification of this patent, any or all drawings, and each claim.
The foregoing, together with other features and aspects, will become more apparent upon referring to the following specification, claims, and accompanying drawings.
Illustrative aspects of the present application are described in detail below with reference to the following figures:
Certain aspects of this disclosure are provided below for illustration purposes. Alternate aspects may be devised without departing from the scope of the disclosure. Additionally, well-known elements of the disclosure will not be described in detail or will be omitted so as not to obscure the relevant details of the disclosure. Some of the aspects described herein can be applied independently and some of them may be applied in combination as would be apparent to those of skill in the art. In the following description, for the purposes of explanation, specific details are set forth in order to provide a thorough understanding of aspects of the application. However, it will be apparent that various aspects may be practiced without these specific details. The figures and description are not intended to be restrictive.
The ensuing description provides example aspects only, and is not intended to limit the scope, applicability, or configuration of the disclosure. Rather, the ensuing description of the example aspects will provide those skilled in the art with an enabling description for implementing an example aspect. It should be understood that various changes may be made in the function and arrangement of elements without departing from the spirit and scope of the application as set forth in the appended claims.
The terms “exemplary” and/or “example” are used herein to mean “serving as an example, instance, or illustration.” Any aspect described herein as “exemplary” and/or “example” is not necessarily to be construed as preferred or advantageous over other aspects. Likewise, the term “aspects of the disclosure” does not require that all aspects of the disclosure include the discussed feature, advantage or mode of operation.
Wireless communications systems are deployed to provide various telecommunication services, including telephony, video, data, messaging, broadcasts, among others. Wireless communications systems have developed through various generations. A 5G mobile standard calls for higher data transfer speeds, greater numbers of connections, and better coverage, among other improvements. The 5G standard (also referred to as “New Radio” or “NR”), according to the Next Generation Mobile Networks Alliance, is designed to provide data rates of several tens of megabits per second to each of tens of thousands of users.
Vehicles are an example of devices or systems that can include wireless communications capabilities. For example, vehicles (e.g., automotive vehicles, autonomous vehicles, aircraft, maritime vessels, among others) can communicate with other vehicles and/or with other devices that have wireless communications capabilities. Wireless vehicle communication systems encompass vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), and vehicle-to-pedestrian (V2P) communications, which are all collectively referred to as vehicle-to-everything (V2X) communications. V2X communications is a vehicular communication system that supports the wireless transfer of information from a vehicle to other entities (e.g., other vehicles, pedestrians with smart phones, and/or other traffic infrastructure) located within the traffic system.
In a V2X communication system, information (e.g., position information) can be transmitted from vehicle sensors (and other sources) through wireless links to allow the information to be communicated to other vehicles, pedestrians, and/or traffic infrastructure. The information can be transmitted using one or more vehicle-based messages, such as C-V2X messages, which can include Sensor Data Sharing Messages (SDSMs), Basic Safety Messages (BSMs), Cooperative Awareness Messages (CAMs), Collective Perception Messages (CPMs), and/or other type of message. By sharing this information with other vehicles, the V2X technology improves situational awareness.
The IEEE 802.11p Standard supports (uses) a dedicated short-range communications (DSRC) interface for V2X wireless communications. Characteristics of the IEEE 802.11p based DSRC interface include low latency and the use of the unlicensed 5.9 Gigahertz (GHz) frequency band. Cellular V2X (C-V2X) was adopted as an alternative to using the IEEE 802.11p based DSRC interface for the wireless communications. The 5G Automotive Association (5GAA) supports the use of C-V2X technology. In some cases, the C-V2X technology uses Long-Term Evolution (LTE) as the underlying technology, and the C-V2X functionalities are based on the LTE technology. C-V2X includes a plurality of operational modes. One of the operational modes allows for direct wireless communication between vehicles over the LTE sidelink PC5 interface. Similar to the IEEE 802.11p based DSRC interface, the LTE C-V2X sidelink PC5 interface operates over the 5.9 GHz frequency band. Vehicle-based messages, such as BSMs and CAMs, which are application layer messages, are designed to be wirelessly broadcasted over the 802.11p based DSRC interface and the LTE C-V2X sidelink PC5 interface.
Many commercially available vehicles in the United States are equipped for C-V2X communications to utilize the C-V2X sidelink PC5 interface for communications with other vehicles similarly equipped for C-V2X communications (e.g., to transmit and/or receive vehicle-based messages). Some of these vehicles in the United States are also equipped for DSRC communications to utilize the 802.11p based DSRC interface for communications with other vehicles similarly equipped for DSRC communications (e.g., to transmit and/or receive vehicle-based messages). As such, these vehicles with a dual communications capability are said to have a heterogeneous C-V2X/DSRC communications capability.
A sidelink-capable UE, such as a vehicle, which is capable of utilizing the C-V2X sidelink PC5 interface for communications, can use 3GPP sidelink ranging and positioning for geolocation (e.g., to obtain a position for itself). Sidelink ranging is based on the measurements, such as round trip time (RTT) and angle of arrival (AoA), of sidelink signals obtained by the UE. Sidelink positioning uses similar measurements, but also requires participation of fixed UEs (e.g., stationary UEs or mobile UEs that are static or fixed), which are referred to as “anchor UEs” or “anchors,” that have knowledge of their absolute position. Sidelink-capable UEs can include mobile UEs (e.g., that can be static or fixed at times), such as vehicles, mobile phones associated with pedestrians or cyclists, and/or drones. Sidelink-capable UEs can include stationary UEs, such as roadside units (RSUs). Any sidelink-capable UE may serve as an anchor UE if the sidelink-capable UE has established its own position. As defined by 3GPP in Release-18, sidelink ranging and positioning can be established using Sidelink Positioning Protocol (SLPP) to identify participating UEs (e.g., candidate anchor UEs), to perform session establishment, and to exchange measurements and measurement results.
Currently, the inherent mobility of sidelink-capable UEs implies that different UEs may know their absolute position with different levels of accuracy, and may determine their absolute position through the use of different sources. These different sources may be one or more Global Navigation Satellite System (GNSS) sources, one or more geodetic survey sources (e.g., a stationary UE, such as an RSU), one or more sidelink signal sources, one or more wireless network (Uu) (e.g., cellular network) signal sources, one or more Uu positioning sources, and/or one or more WiFi positioning sources. Multiple sources for positioning may be employed to enable a UE to have a greater absolute position accuracy, and to maintain position knowledge and accuracy for a longer period of time.
When a UE (e.g., a first UE) is selecting another UE (e.g., a second UE, which is a candidate anchor UE) as an anchor UE for sidelink positioning, it is preferable for the UE (e.g., the first UE) to select a UE (e.g., a second UE) with the best position accuracy and a UE (e.g., a second UE) that is most likely to maintain that position accuracy for an extended period of time. Knowledge of how a UE (e.g., a second UE, which is a candidate anchor UE) has determined its position (e.g., via using a single source versus using a diversity of sources), for how long the position has been established, how long the UE (e.g., the second UE) expects the position to be known, the accuracy of the position, and the type of UE (e.g., a stationary UE that is static or fixed or a mobile UE) can enable a sidelink positioning UE (e.g., the first UE) to select the most suitable UE (e.g., a second UE) as an anchor UE.
Currently, in 3GPP, SLPP procedures support UEs (e.g., candidate anchor UEs) providing an indication of whether they can serve as an anchor UE and their position accuracy. However, SLPP procedures currently do not allow for UE's to provide an indication of their type of UE (e.g., a stationary UE or a mobile UE), how their position was established, and the duration for which their position is expected to be valid.
In some cases, when an anchor UE's position knowledge and/or position accuracy degrades or is lost, the anchor UE may continue transmitting in order not to lose over-the-air (OTA) transmission resources. Currently, in 3GPP, SLPP procedures do not support signaling that indicate via SLPP (e.g., via a flag) that, although the anchor UE is continuing to transmit assistance data, that data should at present be disregarded. As such, an improved technique to provide a more comprehensive listing of sidelink positioning anchor UE selection criteria (e.g., including the type of candidate anchor UE, how the position of the candidate anchor UE was established, and the duration for which the position of the candidate anchor UE is expected to be valid, as well as including an anchor UE indication of invalid and/or dated assistance information) can be beneficial.
In some aspects of the present disclosure, systems, apparatuses, methods (also referred to as processes), and computer-readable media (collectively referred to herein as “systems and techniques”) are described herein for providing sidelink positioning anchor UE selection criteria.
Various aspects relate generally to wireless communications. Some aspects more specifically relate to providing anchor UE selection criteria for sidelink positioning via wireless communications. In some examples, a candidate anchor UE (e.g., a stationary UE or a mobile UE) may provide its ability to serve as an anchor UE for sidelink positioning along with its positioning accuracy. For a sidelink-capable UE to be able to select the best candidate anchor UE for sidelink positioning, a sidelink-capable UE can benefit from receiving additional information about the candidate anchor UE. In one or more examples, the systems and techniques provide signaling mechanisms for a candidate anchor UE to provide to a sidelink-capable UE a comprehensive listing of anchor UE selection criteria (e.g., a comprehensive listing of information about the candidate anchor UE) for sidelink positioning. In some examples, the comprehensive listing of anchor UE selection criteria may include information about the candidate anchor UE, such as an indication of the candidate anchor UE's position, the candidate anchor UE's type of UE (e.g., a stationary UE or a mobile UE), how long the candidate anchor UE's position has been established (e.g., an age of the candidate anchor UE's position), how long the candidate anchor UE's position is expected to be valid (e.g., a validity duration of the candidate anchor UE's position), how the candidate anchor UE's position has been established (e.g., one or more sources used to obtain the candidate anchor UE's position), a source diversity for the candidate anchor UE's position, an accuracy duration for the candidate anchor UE's position, and/or the validity of assistance data provided by the candidate anchor UE (e.g., the assistance data validity for the candidate anchor UE's position data). The use of this anchor UE selection criteria can enable sidelink-capable UEs to select one or more anchor UEs (e.g., from candidate anchor UEs) most suitable for employing for a sidelink positioning transaction.
Particular aspects of the subject matter described in this disclosure can be implemented to realize one or more of the following potential advantages. In some examples, by employing this disclosed signaling mechanism to provide a comprehensive listing of anchor UE selection criteria, the described techniques can be used by a sidelink-capable UE to identify the most optimum anchor UEs to use for sidelink positioning. By employing the most optimum anchor UEs for sidelink positioning can result in a side-link capable UE to be able to obtain a more accurate position of itself with an improved sidelink positioning performance.
Additional aspects of the present disclosure are described in more detail below.
As used herein, the terms “user equipment” (UE) and “network entity” are not intended to be specific or otherwise limited to any particular radio access technology (RAT), unless otherwise noted. In general, a UE may be any wireless communication device (e.g., a mobile phone, router, tablet computer, laptop computer, and/or tracking device, etc.), wearable (e.g., smartwatch, smart-glasses, wearable ring, and/or an extended reality (XR) device such as a virtual reality (VR) headset, an augmented reality (AR) headset or glasses, or a mixed reality (MR) headset), vehicle (e.g., automobile, motorcycle, bicycle, etc.), and/or Internet of Things (IoT) device, etc., used by a user to communicate over a wireless communications network. A UE may be mobile or may (e.g., at certain times) be stationary, and may communicate with a radio access network (RAN). As used herein, the term “UE” may be referred to interchangeably as an “access terminal” or “AT,” a “client device,” a “wireless device,” a “subscriber device,” a “subscriber terminal,” a “subscriber station,” a “user terminal” or “UT,” a “mobile device,” a “mobile terminal,” a “mobile station,” or variations thereof. Generally, UEs can communicate with a core network via a RAN, and through the core network the UEs can be connected with external networks such as the Internet and with other UEs. Of course, other mechanisms of connecting to the core network and/or the Internet are also possible for the UEs, such as over wired access networks, wireless local area network (WLAN) networks (e.g., based on IEEE 802.11 communication standards, etc.) and so on.
In some cases, a network entity can be implemented in an aggregated or monolithic base station or server architecture, or alternatively, in a disaggregated base station or server architecture, and may include one or more of a central unit (CU), a distributed unit (DU), a radio unit (RU), a Near-Real Time (Near-RT) RAN Intelligent Controller (RIC), or a Non-Real Time (Non-RT) RIC. In some cases, a network entity can include a server device, such as a Multi-access Edge Compute (MEC) device. A base station or server (e.g., with an aggregated/monolithic base station architecture or disaggregated base station architecture) may operate according to one of several RATs in communication with UEs, road side units (RSUs), and/or other devices depending on the network in which it is deployed, and may be alternatively referred to as an access point (AP), a network node, a NodeB (NB), an evolved NodeB (eNB), a next generation eNB (ng-eNB), a New Radio (NR) Node B (also referred to as a gNB or gNodeB), etc. A base station may be used primarily to support wireless access by UEs, including supporting data, voice, and/or signaling connections for the supported UEs. In some systems, a base station may provide edge node signaling functions while in other systems it may provide additional control and/or network management functions. A communication link through which UEs can send signals to a base station is called an uplink (UL) channel (e.g., a reverse traffic channel, a reverse control channel, an access channel, etc.). A communication link through which the base station can send signals to UEs is called a downlink (DL) or forward link channel (e.g., a paging channel, a control channel, a broadcast channel, or a forward traffic channel, etc.). The term traffic channel (TCH), as used herein, can refer to either an uplink, reverse or downlink, and/or a forward traffic channel.
The term “network entity” or “base station” (e.g., with an aggregated/monolithic base station architecture or disaggregated base station architecture) may refer to a single physical TRP or to multiple physical TRPs that may or may not be co-located. For example, where the term “network entity” or “base station” refers to a single physical TRP, the physical TRP may be an antenna of the base station corresponding to a cell (or several cell sectors) of the base station. Where the term “network entity” or “base station” refers to multiple co-located physical TRPs, the physical TRPs may be an array of antennas (e.g., as in a multiple-input multiple-output (MIMO) system or where the base station employs beamforming) of the base station. Where the term “base station” refers to multiple non-co-located physical TRPs, the physical TRPs may be a distributed antenna system (DAS) (a network of spatially separated antennas connected to a common source via a transport medium) or a remote radio head (RRH) (a remote base station connected to a serving base station). Alternatively, the non-co-located physical TRPs may be the serving base station receiving the measurement report from the UE and a neighbor base station whose reference radio frequency (RF) signals (or simply “reference signals”) the UE is measuring. Because a TRP is the point from which a base station transmits and receives wireless signals, as used herein, references to transmission from or reception at a base station are to be understood as referring to a particular TRP of the base station.
In some implementations that support positioning of UEs, a network entity or base station may not support wireless access by UEs (e.g., may not support data, voice, and/or signaling connections for UEs), but may instead transmit reference signals to UEs to be measured by the UEs, and/or may receive and measure signals transmitted by the UEs. Such a base station may be referred to as a positioning beacon (e.g., when transmitting signals to UEs) and/or as a location measurement unit (e.g., when receiving and measuring signals from UEs).
A roadside unit (RSU) is a device that can transmit and receive messages over a communications link or interface (e.g., a cellular-based sidelink or PC5 interface, an 802.11 or WiFi™ based Dedicated Short Range Communication (DSRC) interface, and/or other interface) to and from one or more UEs, other RSUs, and/or base stations. An example of messages that can be transmitted and received by an RSU includes vehicle-to-everything (V2X) messages, which are described in more detail below. RSUs can be located on various transportation infrastructure systems, including roads, bridges, parking lots, toll booths, and/or other infrastructure systems. In some examples, an RSU can facilitate communication between UEs (e.g., vehicles, pedestrian user devices, and/or other UEs) and the transportation infrastructure systems. In some implementations, a RSU can be in communication with a server, base station, and/or other system that can perform centralized management functions.
An RSU can communicate with a communications system of a UE. For example, an intelligent transport system (ITS) of a UE (e.g., a vehicle and/or other UE) can be used to generate and sign messages for transmission to an RSU and to validate messages received from an RSU. An RSU can communicate (e.g., over a PC5 interface, DSRC interface, etc.) with vehicles traveling along a road, bridge, or other infrastructure system in order to obtain traffic-related data (e.g., time, speed, location, etc. of the vehicle). In some cases, in response to obtaining the traffic-related data, the RSU can determine or estimate traffic congestion information (e.g., a start of traffic congestion, an end of traffic congestion, etc.), a travel time, and/or other information for a particular location. In some examples, the RSU can communicate with other RSUs (e.g., over a PC5 interface, DSRC interface, etc.) in order to determine the traffic-related data. The RSU can transmit the information (e.g., traffic congestion information, travel time information, and/or other information) to other vehicles, pedestrian UEs, and/or other UEs. For example, the RSU can broadcast or otherwise transmit the information to any UE (e.g., vehicle, pedestrian UE, etc.) that is in a coverage range of the RSU.
A radio frequency signal or “RF signal” comprises an electromagnetic wave of a given frequency that transports information through the space between a transmitter and a receiver. As used herein, a transmitter may transmit a single “RF signal” or multiple “RF signals” to a receiver. However, the receiver may receive multiple “RF signals” corresponding to each transmitted RF signal due to the propagation characteristics of RF signals through multipath channels. The same transmitted RF signal on different paths between the transmitter and receiver may be referred to as a “multipath” RF signal. As used herein, an RF signal may also be referred to as a “wireless signal” or simply a “signal” where it is clear from the context that the term “signal” refers to a wireless signal or an RF signal.
According to various aspects,
The base stations 102 may collectively form a RAN and interface with a core network 170 (e.g., an evolved packet core (EPC) or a 5G core (5GC)) through backhaul links 122, and through the core network 170 to one or more location servers 172 (which may be part of core network 170 or may be external to core network 170). In addition to other functions, the base stations 102 may perform functions that relate to one or more of transferring user data, radio channel ciphering and deciphering, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection setup and release, load balancing, distribution for non-access stratum (NAS) messages, NAS node selection, synchronization, RAN sharing, multimedia broadcast multicast service (MBMS), subscriber and equipment trace, RAN information management (RIM), paging, positioning, and delivery of warning messages. The base stations 102 may communicate with each other directly or indirectly (e.g., through the EPC or 5GC) over backhaul links 134, which may be wired and/or wireless.
The base stations 102 may wirelessly communicate with the UEs 104. Each of the base stations 102 may provide communication coverage for a respective geographic coverage area 110. In an aspect, one or more cells may be supported by a base station 102 in each coverage area 110. A “cell” is a logical communication entity used for communication with a base station (e.g., over some frequency resource, referred to as a carrier frequency, component carrier, carrier, band, or the like), and may be associated with an identifier (e.g., a physical cell identifier (PCI), a virtual cell identifier (VCI), a cell global identifier (CGI)) for distinguishing cells operating via the same or a different carrier frequency. In some cases, different cells may be configured according to different protocol types (e.g., machine-type communication (MTC), narrowband IoT (NB-IoT), enhanced mobile broadband (eMBB), or others) that may provide access for different types of UEs. Because a cell is supported by a specific base station, the term “cell” may refer to either or both of the logical communication entity and the base station that supports it, depending on the context. In addition, because a TRP is typically the physical transmission point of a cell, the terms “cell” and “TRP” may be used interchangeably. In some cases, the term “cell” may also refer to a geographic coverage area of a base station (e.g., a sector), insofar as a carrier frequency can be detected and used for communication within some portion of geographic coverage areas 110.
While neighboring macro cell base station 102 geographic coverage areas 110 may partially overlap (e.g., in a handover region), some of the geographic coverage areas 110 may be substantially overlapped by a larger geographic coverage area 110. For example, a small cell base station 102′ may have a coverage area 110′ that substantially overlaps with the coverage area 110 of one or more macro cell base stations 102. A network that includes both small cell and macro cell base stations may be known as a heterogeneous network. A heterogeneous network may also include home eNBs (HeNBs), which may provide service to a restricted group known as a closed subscriber group (CSG).
The communication links 120 between the base stations 102 and the UEs 104 may include uplink (also referred to as reverse link) transmissions from a UE 104 to a base station 102 and/or downlink (also referred to as forward link) transmissions from a base station 102 to a UE 104. The communication links 120 may use MIMO antenna technology, including spatial multiplexing, beamforming, and/or transmit diversity. The communication links 120 may be through one or more carrier frequencies. Allocation of carriers may be asymmetric with respect to downlink and uplink (e.g., more or less carriers may be allocated for downlink than for uplink).
The wireless communications system 100 may further include a WLAN AP 150 in communication with WLAN stations (STAs) 152 via communication links 154 in an unlicensed frequency spectrum (e.g., 5 Gigahertz (GHz)). When communicating in an unlicensed frequency spectrum, the WLAN STAs 152 and/or the WLAN AP 150 may perform a clear channel assessment (CCA) or listen before talk (LBT) procedure prior to communicating in order to determine whether the channel is available. In some examples, the wireless communications system 100 can include devices (e.g., UEs, etc.) that communicate with one or more UEs 104, base stations 102, APs 150, etc. utilizing the ultra-wideband (UWB) spectrum. The UWB spectrum can range from 3.1 to 10.5 GHz.
The small cell base station 102′ may operate in a licensed and/or an unlicensed frequency spectrum. When operating in an unlicensed frequency spectrum, the small cell base station 102′ may employ LTE or NR technology and use the same 5 GHz unlicensed frequency spectrum as used by the WLAN AP 150. The small cell base station 102′, employing LTE and/or 5G in an unlicensed frequency spectrum, may boost coverage to and/or increase capacity of the access network. NR in unlicensed spectrum may be referred to as NR-U. LTE in an unlicensed spectrum may be referred to as LTE-U, licensed assisted access (LAA), or MulteFire.
The wireless communications system 100 may further include a millimeter wave (mmW) base station 180 that may operate in mmW frequencies and/or near mmW frequencies in communication with a UE 182. The mmW base station 180 may be implemented in an aggregated or monolithic base station architecture, or alternatively, in a disaggregated base station architecture (e.g., including one or more of a CU, a DU, a RU, a Near-RT RIC, or a Non-RT RIC). Extremely high frequency (EHF) is part of the RF in the electromagnetic spectrum. EHF has a range of 30 GHz to 300 GHz and a wavelength between 1 millimeter and 10 millimeters. Radio waves in this band may be referred to as a millimeter wave. Near mmW may extend down to a frequency of 3 GHz with a wavelength of 100 millimeters. The super high frequency (SHF) band extends between 3 GHz and 30 GHz, also referred to as centimeter wave. Communications using the mmW and/or near mmW radio frequency band have high path loss and a relatively short range. The mmW base station 180 and the UE 182 may utilize beamforming (transmit and/or receive) over an mmW communication link 184 to compensate for the extremely high path loss and short range. Further, it will be appreciated that in alternative configurations, one or more base stations 102 may also transmit using mmW or near mmW and beamforming. Accordingly, it will be appreciated that the foregoing illustrations are merely examples and should not be construed to limit the various aspects disclosed herein.
Transmit beamforming is a technique for focusing an RF signal in a specific direction. Traditionally, when a network node or entity (e.g., a base station) broadcasts an RF signal, it broadcasts the signal in all directions (omni-directionally). With transmit beamforming, the network node determines where a given target device (e.g., a UE) is located (relative to the transmitting network node) and projects a stronger downlink RF signal in that specific direction, thereby providing a faster (in terms of data rate) and stronger RF signal for the receiving device(s). To change the directionality of the RF signal when transmitting, a network node can control the phase and relative amplitude of the RF signal at each of the one or more transmitters that are broadcasting the RF signal. For example, a network node may use an array of antennas (referred to as a “phased array” or an “antenna array”) that creates a beam of RF waves that can be “steered” to point in different directions, without actually moving the antennas. Specifically, the RF current from the transmitter is fed to the individual antennas with the correct phase relationship so that the radio waves from the separate antennas add together to increase the radiation in a desired direction, while canceling to suppress radiation in undesired directions.
Transmit beams may be quasi-collocated, meaning that they appear to the receiver (e.g., a UE) as having the same parameters, regardless of whether or not the transmitting antennas of the network node themselves are physically collocated. In NR, there are four types of quasi-collocation (QCL) relations. Specifically, a QCL relation of a given type means that certain parameters about a second reference RF signal on a second beam can be derived from information about a source reference RF signal on a source beam. Thus, if the source reference RF signal is QCL Type A, the receiver can use the source reference RF signal to estimate the Doppler shift, Doppler spread, average delay, and delay spread of a second reference RF signal transmitted on the same channel. If the source reference RF signal is QCL Type B, the receiver can use the source reference RF signal to estimate the Doppler shift and Doppler spread of a second reference RF signal transmitted on the same channel. If the source reference RF signal is QCL Type C, the receiver can use the source reference RF signal to estimate the Doppler shift and average delay of a second reference RF signal transmitted on the same channel. If the source reference RF signal is QCL Type D, the receiver can use the source reference RF signal to estimate the spatial receive parameter of a second reference RF signal transmitted on the same channel.
In receiving beamforming, the receiver uses a receive beam to amplify RF signals detected on a given channel. For example, the receiver can increase the gain setting and/or adjust the phase setting of an array of antennas in a particular direction to amplify (e.g., to increase the gain level of) the RF signals received from that direction. Thus, when a receiver is said to beamform in a certain direction, it means the beam gain in that direction is high relative to the beam gain along other directions, or the beam gain in that direction is the highest compared to the beam gain of other beams available to the receiver. This results in a stronger received signal strength, (e.g., reference signal received power (RSRP), reference signal received quality (RSRQ), signal-to-interference-plus-noise ratio (SINR), etc.) of the RF signals received from that direction.
Receive beams may be spatially related. A spatial relation means that parameters for a transmit beam for a second reference signal can be derived from information about a receive beam for a first reference signal. For example, a UE may use a particular receive beam to receive one or more reference downlink reference signals (e.g., positioning reference signals (PRS), tracking reference signals (TRS), phase tracking reference signal (PTRS), cell-specific reference signals (CRS), channel state information reference signals (CSI-RS), primary synchronization signals (PSS), secondary synchronization signals (SSS), synchronization signal blocks (SSBs), etc.) from a network node or entity (e.g., a base station). The UE can then form a transmit beam for sending one or more uplink reference signals (e.g., uplink positioning reference signals (UL-PRS), sounding reference signal (SRS), demodulation reference signals (DMRS), PTRS, etc.) to that network node or entity (e.g., a base station) based on the parameters of the receive beam.
Note that a “downlink” beam may be either a transmit beam or a receive beam, depending on the entity forming it. For example, if a network node or entity (e.g., a base station) is forming the downlink beam to transmit a reference signal to a UE, the downlink beam is a transmit beam. If the UE is forming the downlink beam, however, it is a receive beam to receive the downlink reference signal. Similarly, an “uplink” beam may be either a transmit beam or a receive beam, depending on the entity forming it. For example, if a network node or entity (e.g., a base station) is forming the uplink beam, it is an uplink receive beam, and if a UE is forming the uplink beam, it is an uplink transmit beam.
In 5G, the frequency spectrum in which wireless network nodes or entities (e.g., base stations 102/180, UEs 104/182) operate is divided into multiple frequency ranges, FR1 (from 450 to 6000 Megahertz (MHz)), FR2 (from 24250 to 52600 MHz), FR3 (above 52600 MHz), and FR4 (between FR1 and FR2). In a multi-carrier system, such as 5G, one of the carrier frequencies is referred to as the “primary carrier” or “anchor carrier” or “primary serving cell” or “PCell,” and the remaining carrier frequencies are referred to as “secondary carriers” or “secondary serving cells” or “SCells.” In carrier aggregation, the anchor carrier is the carrier operating on the primary frequency (e.g., FR1) utilized by a UE 104/182 and the cell in which the UE 104/182 either performs the initial radio resource control (RRC) connection establishment procedure or initiates the RRC connection re-establishment procedure. The primary carrier carries all common and UE-specific control channels, and may be a carrier in a licensed frequency (however, this is not always the case). A secondary carrier is a carrier operating on a second frequency (e.g., FR2) that may be configured once the RRC connection is established between the UE 104 and the anchor carrier and that may be used to provide additional radio resources. In some cases, the secondary carrier may be a carrier in an unlicensed frequency. The secondary carrier may contain only necessary signaling information and signals, for example, those that are UE-specific may not be present in the secondary carrier, since both primary uplink and downlink carriers are typically UE-specific. This means that different UEs 104/182 in a cell may have different downlink primary carriers. The same is true for the uplink primary carriers. The network is able to change the primary carrier of any UE 104/182 at any time. This is done, for example, to balance the load on different carriers. Because a “serving cell” (whether a PCell or an SCell) corresponds to a carrier frequency and/or component carrier over which some base station is communicating, the term “cell,” “serving cell,” “component carrier,” “carrier frequency,” and the like can be used interchangeably.
For example, still referring to
In order to operate on multiple carrier frequencies, a base station 102 and/or a UE 104 is equipped with multiple receivers and/or transmitters. For example, a UE 104 may have two receivers, “Receiver 1” and “Receiver 2,” where “Receiver 1” is a multi-band receiver that can be tuned to band (i.e., carrier frequency) ‘X’ or band ‘Y,’ and “Receiver 2” is a one-band receiver tuneable to band ‘Z’ only. In this example, if the UE 104 is being served in band ‘X,’ band ‘X’ would be referred to as the PCell or the active carrier frequency, and “Receiver 1” would need to tune from band ‘X’ to band ‘Y’ (an SCell) in order to measure band ‘Y’ (and vice versa). In contrast, whether the UE 104 is being served in band ‘X’ or band ‘Y,’ because of the separate “Receiver 2,” the UE 104 can measure band ‘Z’ without interrupting the service on band ‘X’ or band ‘Y.’
The wireless communications system 100 may further include a UE 164 that may communicate with a macro cell base station 102 over a communication link 120 and/or the mmW base station 180 over an mmW communication link 184. For example, the macro cell base station 102 may support a PCell and one or more SCells for the UE 164 and the mmW base station 180 may support one or more SCells for the UE 164.
The wireless communications system 100 may further include one or more UEs, such as UE 190, that connects indirectly to one or more communication networks via one or more device-to-device (D2D) peer-to-peer (P2P) links (referred to as “sidelinks”). In the example of
An aggregated base station may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node. A disaggregated base station may be configured to utilize a protocol stack that is physically or logically distributed among two or more units (such as one or more central or centralized units (CUs), one or more distributed units (DUs), or one or more radio units (RUs)). In some aspects, a CU may be implemented within a RAN node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed throughout one or multiple other RAN nodes. The DUs may be implemented to communicate with one or more RUs. Each of the CU, DU and RU also can be implemented as virtual units, i.e., a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU).
Base station-type operation or network design may consider aggregation characteristics of base station functionality. For example, disaggregated base stations may be utilized in an integrated access backhaul (IAB) network, an open radio access network (O-RAN (such as the network configuration sponsored by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)). Disaggregation may include distributing functionality across two or more units at various physical locations, as well as distributing functionality for at least one unit virtually, which can enable flexibility in network design. The various units of the disaggregated base station, or disaggregated RAN architecture, can be configured for wired or wireless communication with at least one other unit.
As previously mentioned,
Each of the units, i.e., the CUs 211, the DUs 231, the RUs 241, as well as the Near-RT RICs 227, the Non-RT RICs 217 and the SMO Framework 207, may include one or more interfaces or be coupled to one or more interfaces configured to receive or transmit signals, data, or information (collectively, signals) via a wired or wireless transmission medium. Each of the units, or an associated processor or controller providing instructions to the communication interfaces of the units, can be configured to communicate with one or more of the other units via the transmission medium. For example, the units can include a wired interface configured to receive or transmit signals over a wired transmission medium to one or more of the other units. Additionally, the units can include a wireless interface, which may include a receiver, a transmitter or transceiver (such as an RF transceiver), configured to receive or transmit signals, or both, over a wireless transmission medium to one or more of the other units.
In some aspects, the CU 211 may host one or more higher layer control functions. Such control functions can include radio resource control (RRC), packet data convergence protocol (PDCP), service data adaptation protocol (SDAP), or the like. Each control function can be implemented with an interface configured to communicate signals with other control functions hosted by the CU 211. The CU 211 may be configured to handle user plane functionality (i.e., Central Unit-User Plane (CU-UP)), control plane functionality (i.e., Central Unit-Control Plane (CU-CP)), or a combination thereof. In some implementations, the CU 211 can be logically split into one or more CU-UP units and one or more CU-CP units. The CU-UP unit can communicate bidirectionally with the CU-CP unit via an interface, such as the E1 interface when implemented in an O-RAN configuration. The CU 211 can be implemented to communicate with the DU 131, as necessary, for network control and signaling.
The DU 231 may correspond to a logical unit that includes one or more base station functions to control the operation of one or more RUs 241. In some aspects, the DU 231 may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more high physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, or the like) depending, at least in part, on a functional split, such as those defined by the 3rd Generation Partnership Project (3GPP). In some aspects, the DU 231 may further host one or more low PHY layers. Each layer (or module) can be implemented with an interface configured to communicate signals with other layers (and modules) hosted by the DU 231, or with the control functions hosted by the CU 211.
Lower-layer functionality can be implemented by one or more RUs 241. In some deployments, an RU 241, controlled by a DU 231, may correspond to a logical node that hosts RF processing functions, or low-PHY layer functions (such as performing fast Fourier transform (FFT), inverse FFT (iFFT), digital beamforming, physical random access channel (PRACH) extraction and filtering, or the like), or both, based at least in part on the functional split, such as a lower layer functional split. In such an architecture, the RU(s) 241 can be implemented to handle over the air (OTA) communication with one or more UEs 221. In some implementations, real-time and non-real-time aspects of control and user plane communication with the RU(s) 241 can be controlled by the corresponding DU 231. In some scenarios, this configuration can enable the DU(s) 231 and the CU 211 to be implemented in a cloud-based RAN architecture, such as a vRAN architecture.
The SMO Framework 207 may be configured to support RAN deployment and provisioning of non-virtualized and virtualized network elements. For non-virtualized network elements, the SMO Framework 207 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements which may be managed via an operations and maintenance interface (such as an O1 interface). For virtualized network elements, the SMO Framework 207 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) 291) to perform network element life cycle management (such as to instantiate virtualized network elements) via a cloud computing platform interface (such as an O2 interface). Such virtualized network elements can include, but are not limited to, CUs 211, DUs 231, RUs 241 and Near-RT RICs 227. In some implementations, the SMO Framework 207 can communicate with a hardware aspect of a 4G RAN, such as an open eNB (O-eNB) 213, via an O1 interface. Additionally, in some implementations, the SMO Framework 207 can communicate directly with one or more RUs 241 via an O1 interface. The SMO Framework 207 also may include a Non-RT RIC 217 configured to support functionality of the SMO Framework 207.
The Non-RT RIC 217 may be configured to include a logical function that enables non-real-time control and optimization of RAN elements and resources, Artificial Intelligence/Machine Learning (AI/ML) workflows including model training and updates, or policy-based guidance of applications/features in the Near-RT RIC 227. The Non-RT RIC 217 may be coupled to or communicate with (such as via an A1 interface) the Near-RT RIC 227. The Near-RT RIC 227 may be configured to include a logical function that enables near-real-time control and optimization of RAN elements and resources via data collection and actions over an interface (such as via an E2 interface) connecting one or more CUs 211, one or more DUs 231, or both, as well as an O-eNB 213, with the Near-RT RIC 227.
In some implementations, to generate AI/ML models to be deployed in the Near-RT RIC 227, the Non-RT RIC 217 may receive parameters or external enrichment information from external servers. Such information may be utilized by the Near-RT RIC 227 and may be received at the SMO Framework 207 or the Non-RT RIC 217 from non-network data sources or from network functions. In some examples, the Non-RT RIC 217 or the Near-RT RIC 227 may be configured to tune RAN behavior or performance. For example, the Non-RT RIC 217 may monitor long-term trends and patterns for performance and employ AI/ML models to perform corrective actions through the SMO Framework 207 (such as reconfiguration via O1) or via creation of RAN management policies (such as A1 policies).
While
While PC5 interfaces are shown in
The control system 452 can be configured to control one or more operations of the vehicle 404, the power management system 451, the computing system 450, the infotainment system 454, the ITS 455, and/or one or more other systems of the vehicle 404 (e.g., a braking system, a steering system, a safety system other than the ITS 455, a cabin system, and/or other system). In some examples, the control system 452 can include one or more electronic control units (ECUs). An ECU can control one or more of the electrical systems or subsystems in a vehicle. Examples of specific ECUs that can be included as part of the control system 452 include an engine control module (ECM), a powertrain control module (PCM), a transmission control module (TCM), a brake control module (BCM), a central control module (CCM), a central timing module (CTM), among others. In some cases, the control system 452 can receive sensor signals from the one or more sensor systems 456 and can communicate with other systems of the vehicle computing system 450 to operate the vehicle 404.
The vehicle computing system 450 also includes a power management system 451. In some implementations, the power management system 451 can include a power management integrated circuit (PMIC), a standby battery, and/or other components. In some cases, other systems of the vehicle computing system 450 can include one or more PMICs, batteries, and/or other components. The power management system 451 can perform power management functions for the vehicle 404, such as managing a power supply for the computing system 450 and/or other parts of the vehicle. For example, the power management system 451 can provide a stable power supply in view of power fluctuations, such as based on starting an engine of the vehicle. In another example, the power management system 451 can perform thermal monitoring operations, such as by checking ambient and/or transistor junction temperatures. In another example, the power management system 451 can perform certain functions based on detecting a certain temperature level, such as causing a cooling system (e.g., one or more fans, an air conditioning system, etc.) to cool certain components of the vehicle computing system 450 (e.g., the control system 452, such as one or more ECUs), shutting down certain functionalities of the vehicle computing system 450 (e.g., limiting the infotainment system 454, such as by shutting off one or more displays, disconnecting from a wireless network, etc.), among other functions.
The vehicle computing system 450 further includes a communications system 458. The communications system 458 can include both software and hardware components for transmitting signals to and receiving signals from a network (e.g., a gNB or other network entity over a Uu interface) and/or from other UEs (e.g., to another vehicle or UE over a PC5 interface, WiFi interface (e.g., DSRC), Bluetooth™ interface, and/or other wireless and/or wired interface). For example, the communications system 458 is configured to transmit and receive information wirelessly over any suitable wireless network (e.g., a 3G network, 4G network, 5G network, WiFi network, Bluetooth™ network, and/or other network). The communications system 458 includes various components or devices used to perform the wireless communication functionalities, including an original equipment manufacturer (OEM) subscriber identity module (referred to as a SIM or SIM card) 460, a user SIM 462, and a modem 464. While the vehicle computing system 450 is shown as having two SIMs and one modem, the computing system 450 can have any number of SIMs (e.g., one SIM or more than two SIMs) and any number of modems (e.g., one modem, two modems, or more than two modems) in some implementations.
A SIM is a device (e.g., an integrated circuit) that can securely store an international mobile subscriber identity (IMSI) number and a related key (e.g., an encryption-decryption key) of a particular subscriber or user. The IMSI and key can be used to identify and authenticate the subscriber on a particular UE. The OEM SIM 460 can be used by the communications system 458 for establishing a wireless connection for vehicle-based operations, such as for conducting emergency-calling (eCall) functions, communicating with a communications system of the vehicle manufacturer (e.g., for software updates, etc.), among other operations. The OEM SIM 460 can be important for the OEM SIM to support critical services, such as eCall for making emergency calls in the event of a car accident or other emergency. For instance, eCall can include a service that automatically dials an emergency number (e.g., “9-1-1” in the United States, “1-1-2” in Europe, etc.) in the event of a vehicle accident and communicates a location of the vehicle to the emergency services, such as a police department, fire department, etc.
The user SIM 462 can be used by the communications system 458 for performing wireless network access functions in order to support a user data connection (e.g., for conducting phone calls, messaging, Infotainment related services, among others). In some cases, a user device of a user can connect with the vehicle computing system 450 over an interface (e.g., over PC5, Bluetooth™, WiFI™ (e.g., DSRC), a universal serial bus (USB) port, and/or other wireless or wired interface). Once connected, the user device can transfer wireless network access functionality from the user device to communications system 458 the vehicle, in which case the user device can cease performance of the wireless network access functionality (e.g., during the period in which the communications system 458 is performing the wireless access functionality). The communications system 458 can begin interacting with a base station to perform one or more wireless communication operations, such as facilitating a phone call, transmitting and/or receiving data (e.g., messaging, video, audio, etc.), among other operations. In such cases, other components of the vehicle computing system 450 can be used to output data received by the communications system 458. For example, the infotainment system 454 (described below) can display video received by the communications system 458 on one or more displays and/or can output audio received by the communications system 458 using one or more speakers.
A modem is a device that modulates one or more carrier wave signals to encode digital information for transmission, and demodulates signals to decode the transmitted information. The modem 464 (and/or one or more other modems of the communications system 458) can be used for communication of data for the OEM SIM 460 and/or the user SIM 462. In some examples, the modem 464 can include a 4G (or LTE) modem and another modem (not shown) of the communications system 458 can include a 5G (or NR) modem. In some examples, the communications system 458 can include one or more Bluetooth™ modems (e.g., for Bluetooth™ Low Energy (BLE) or other type of Bluetooth communications), one or more WiFi™ modems (e.g., for DSRC communications and/or other WiFi communications), wideband modems (e.g., an ultra-wideband (UWB) modem), any combination thereof, and/or other types of modems.
In some cases, the modem 464 (and/or one or more other modems of the communications system 458) can be used for performing V2X communications (e.g., with other vehicles for V2V communications, with other devices for D2D communications, with infrastructure systems for V2I communications, with pedestrian UEs for V2P communications, etc.). In some examples, the communications system 458 can include a V2X modem used for performing V2X communications (e.g., sidelink communications over a PC5 interface or DSRC interface), in which case the V2X modem can be separate from one or more modems used for wireless network access functions (e.g., for network communications over a network/Uu interface and/or sidelink communications other than V2X communications).
In some examples, the communications system 458 can be or can include a telematics control unit (TCU). In some implementations, the TCU can include a network access device (NAD) (also referred to in some cases as a network control unit or NCU). The NAD can include the modem 464, any other modem not shown in
In some cases, the communications system 458 can further include one or more wireless interfaces (e.g., including one or more transceivers and one or more baseband processors for each wireless interface) for transmitting and receiving wireless communications, one or more wired interfaces (e.g., a serial interface such as a universal serial bus (USB) input, a lightening connector, and/or other wired interface) for performing communications over one or more hardwired connections, and/or other components that can allow the vehicle 404 to communicate with a network and/or other UEs.
The vehicle computing system 450 can also include an infotainment system 454 that can control content and one or more output devices of the vehicle 404 that can be used to output the content. The infotainment system 454 can also be referred to as an in-vehicle infotainment (IVI) system or an In-car entertainment (ICE) system. The content can include navigation content, media content (e.g., video content, music or other audio content, and/or other media content), among other content. The one or more output devices can include one or more graphical user interfaces, one or more displays, one or more speakers, one or more extended reality devices (e.g., a VR, AR, and/or MR headset), one or more haptic feedback devices (e.g., one or more devices configured to vibrate a seat, steering wheel, and/or other part of the vehicle 404), and/or other output device.
In some examples, the computing system 450 can include the intelligent transport system (ITS) 455. In some examples, the ITS 455 can be used for implementing V2X communications. For example, an ITS stack of the ITS 455 can generate V2X messages based on information from an application layer of the ITS. In some cases, the application layer can determine whether certain conditions have been met for generating messages for use by the ITS 455 and/or for generating messages that are to be sent to other vehicles (for V2V communications), to pedestrian UEs (for V2P communications), and/or to infrastructure systems (for V2I communications). In some cases, the communications system 458 and/or the ITS 455 can obtain car access network (CAN) information (e.g., from other components of the vehicle via a CAN bus). In some examples, the communications system 458 (e.g., a TCU NAD) can obtain the CAN information via the CAN bus and can send the CAN information to a PHY/MAC layer of the ITS 455. The ITS 455 can provide the CAN information to the ITS stack of the ITS 455. The CAN information can include vehicle related information, such as a heading of the vehicle, speed of the vehicle, breaking information, among other information. The CAN information can be continuously or periodically (e.g., every 1 millisecond (ms), every 10 ms, or the like) provided to the ITS 455.
The conditions used to determine whether to generate messages can be determined using the CAN information based on safety-related applications and/or other applications, including applications related to road safety, traffic efficiency, infotainment, business, and/or other applications. In one illustrative example, the ITS 455 can perform lane change assistance or negotiation. For instance, using the CAN information, the ITS 455 can determine that a driver of the vehicle 404 is attempting to change lanes from a current lane to an adjacent lane (e.g., based on a blinker being activated, based on the user veering or steering into an adjacent lane, etc.). Based on determining the vehicle 404 is attempting to change lanes, the ITS 455 can determine a lane-change condition has been met that is associated with a message to be sent to other vehicles that are nearby the vehicle in the adjacent lane. The ITS 455 can trigger the ITS stack to generate one or more messages for transmission to the other vehicles, which can be used to negotiate a lane change with the other vehicles. Other examples of applications include forward collision warning, automatic emergency breaking, lane departure warning, pedestrian avoidance or protection (e.g., when a pedestrian is detected near the vehicle 404, such as based on V2P communications with a UE of the user), traffic sign recognition, among others.
The ITS 455 can use any suitable protocol to generate messages (e.g., V2X messages). Examples of protocols that can be used by the ITS 455 include one or more Society of Automotive Engineering (SAE) standards, such as SAE J2735, SAE J2945, SAE J3161, and/or other standards, which are hereby incorporated by reference in their entirety and for all purposes.
A security layer of the ITS 455 can be used to securely sign messages from the ITS stack that are sent to and verified by other UEs configured for V2X communications, such as other vehicles, pedestrian UEs, and/or infrastructure systems. The security layer can also verify messages received from such other UEs. In some implementations, the signing and verification processes can be based on a security context of the vehicle. In some examples, the security context may include one or more encryption-decryption algorithms, a public and/or private key used to generate a signature using an encryption-decryption algorithm, and/or other information. For example, each ITS message generated by the ITS 455 can be signed by the security layer of the ITS 455. The signature can be derived using a public key and an encryption-decryption algorithm. A vehicle, pedestrian UE, and/or infrastructure system receiving a signed message can verify the signature to make sure the message is from an authorized vehicle. In some examples, the one or more encryption-decryption algorithms can include one or more symmetric encryption algorithms (e.g., advanced encryption standard (AES), data encryption standard (DES), and/or other symmetric encryption algorithm), one or more asymmetric encryption algorithms using public and private keys (e.g., Rivest-Shamir-Adleman (RSA) and/or other asymmetric encryption algorithm), and/or other encryption-decryption algorithm.
In some examples, the ITS 455 can determine certain operations (e.g., V2X-based operations) to perform based on messages received from other UEs. The operations can include safety-related and/or other operations, such as operations for road safety, traffic efficiency, infotainment, business, and/or other applications. In some examples, the operations can include causing the vehicle (e.g., the control system 452) to perform automatic functions, such as automatic breaking, automatic steering (e.g., to maintain a heading in a particular lane), automatic lane change negotiation with other vehicles, among other automatic functions. In one illustrative example, a message can be received by the communications system 458 from another vehicle (e.g., over a PC5 interface, a DSRC interface, or other device to device direct interface) indicating that the other vehicle is coming to a sudden stop. In response to receiving the message, the ITS stack can generate a message or instruction and can send the message or instruction to the control system 452, which can cause the control system 452 to automatically break the vehicle 404 so that it comes to a stop before making impact with the other vehicle. In other illustrative examples, the operations can include triggering display of a message alerting a driver that another vehicle is in the lane next to the vehicle, a message alerting the driver to stop the vehicle, a message alerting the driver that a pedestrian is in an upcoming cross-walk, a message alerting the driver that a toll booth is within a certain distance (e.g., within 1 mile) of the vehicle, among others.
In some examples, the ITS 455 can receive a large number of messages from the other UEs (e.g., vehicles, RSUs, etc.), in which case the ITS 455 will authenticate (e.g., decode and decrypt) each of the messages and/or determine which operations to perform. Such a large number of messages can lead to a large computational load for the vehicle computing system 450. In some cases, the large computational load can cause a temperature of the computing system 450 to increase. Rising temperatures of the components of the computing system 450 can adversely affect the ability of the computing system 450 to process the large number of incoming messages. One or more functionalities can be transitioned from the vehicle 404 to another device (e.g., a user device, a RSU, etc.) based on a temperature of the vehicle computing system 450 (or component thereof) exceeding or approaching one or more thermal levels. Transitioning the one or more functionalities can reduce the computational load on the vehicle 404, helping to reduce the temperature of the components. A thermal load balancer can be provided that enable the vehicle computing system 450 to perform thermal based load balancing to control a processing load depending on the temperature of the computing system 450 and processing capacity of the vehicle computing system 450.
The computing system 450 further includes one or more sensor systems 456 (e.g., a first sensor system through an Nth sensor system, where N is a value equal to or greater than 0). When including multiple sensor systems, the sensor system(s) 456 can include different types of sensor systems that can be arranged on or in different parts the vehicle 404. The sensor system(s) 456 can include one or more camera sensor systems, LIDAR sensor systems, radio detection and ranging (RADAR) sensor systems, Electromagnetic Detection and Ranging (EmDAR) sensor systems, Sound Navigation and Ranging (SONAR) sensor systems, Sound Detection and Ranging (SODAR) sensor systems, Global Navigation Satellite System (GNSS) receiver systems (e.g., one or more Global Positioning System (GPS) receiver systems), accelerometers, gyroscopes, inertial measurement units (IMUs), infrared sensor systems, laser rangefinder systems, ultrasonic sensor systems, infrasonic sensor systems, microphones, any combination thereof, and/or other sensor systems. It should be understood that any number of sensors or sensor systems can be included as part of the computing system 450 of the vehicle 404.
While the vehicle computing system 450 is shown to include certain components and/or systems, one of ordinary skill will appreciate that the vehicle computing system 450 can include more or fewer components than those shown in
The computing system 570 may also include one or more memory devices 586, one or more digital signal processors (DSPs) 582, one or more SIMs 574, one or more modems 576, one or more wireless transceivers 578, an antenna 587, one or more input devices 572 (e.g., a camera, a mouse, a keyboard, a touch sensitive screen, a touch pad, a keypad, a microphone, and/or the like), and one or more output devices 580 (e.g., a display, a speaker, a printer, and/or the like).
The one or more wireless transceivers 578 can receive wireless signals (e.g., signal 588) via antenna 587 from one or more other devices, such as other user devices, vehicles (e.g., vehicle 404 of
In some cases, the computing system 570 can include a coding-decoding device (or CODEC) configured to encode and/or decode data transmitted and/or received using the one or more wireless transceivers 578. In some cases, the computing system 570 can include an encryption-decryption device or component configured to encrypt and/or decrypt data (e.g., according to the AES and/or DES standard) transmitted and/or received by the one or more wireless transceivers 578.
The one or more SIMs 574 can each securely store an IMSI number and related key assigned to the user of the user device 507. As noted above, the IMSI and key can be used to identify and authenticate the subscriber when accessing a network provided by a network service provider or operator associated with the one or more SIMs 574. The one or more modems 576 can modulate one or more signals to encode information for transmission using the one or more wireless transceivers 578. The one or more modems 576 can also demodulate signals received by the one or more wireless transceivers 578 in order to decode the transmitted information. In some examples, the one or more modems 576 can include a 4G (or LTE) modem, a 5G (or NR) modem, a modem configured for V2X communications, and/or other types of modems. The one or more modems 576 and the one or more wireless transceivers 578 can be used for communicating data for the one or more SIMs 574.
The computing system 570 can also include (and/or be in communication with) one or more non-transitory machine-readable storage media or storage devices (e.g., one or more memory devices 586), which can include, without limitation, local and/or network accessible storage, a disk drive, a drive array, an optical storage device, a solid-state storage device such as a RAM and/or a ROM, which can be programmable, flash-updateable and/or the like. Such storage devices may be configured to implement any appropriate data storage, including without limitation, various file systems, database structures, and/or the like.
In various aspects, functions may be stored as one or more computer-program products (e.g., instructions or code) in memory device(s) 586 and executed by the one or more processor(s) 584 and/or the one or more DSPs 582. The computing system 570 can also include software elements (e.g., located within the one or more memory devices 586), including, for example, an operating system, device drivers, executable libraries, and/or other code, such as one or more application programs, which may comprise computer programs implementing the functions provided by various aspects, and/or may be designed to implement methods and/or configure systems, as described herein.
As previously mentioned, a sidelink-capable UE, such as a vehicle, which is capable of utilizing the C-V2X sidelink PC5 interface for communications, can use 3GPP sidelink ranging and positioning to obtain a position for itself. Sidelink ranging is based on the measurements (e.g., RTT and AoA) of sidelink signals obtained by the UE. Sidelink positioning utilizes similar measurements, but also requires participation of fixed UEs (e.g., stationary UEs or mobile UEs that are static or fixed) that have knowledge of their absolute position. Sidelink-capable UEs may include mobile UEs (e.g., that can be static or fixed at times), such as vehicles, mobile phones associated with pedestrians or cyclists, and/or drones. Sidelink-capable UEs can include stationary UEs, such as RSUs. Any sidelink-capable UE can serve as an anchor UE if the sidelink-capable UE has established its own position. As defined in 3GPP Release-18, sidelink ranging and positioning may be established using SLPP to identify participating UEs (e.g., candidate anchor UEs), to perform session establishment, and to exchange measurements and measurement results.
The inherent mobility of sidelink-capable UEs can imply that different UEs can know their absolute position with different accuracy, and may determine their absolute position by using different sources. These different sources can be one or more GNSS sources, one or more geodetic survey sources (e.g., a stationary UE, such as an RSU, that has its position determined by a survey), one or more sidelink signal sources (e.g., UE sources transmitting one or more sidelink signals), one or more wireless network (Uu) (e.g., cellular network) signal sources (e.g., UE sources transmitting one or more Uu-based signals), signal sources, one or more Uu positioning sources, and/or one or more WiFi positioning sources. In one or more examples, each GNSS source may be a Global Positioning System (GPS) satellite, a Global Navigation Satellite System (GLONASS) satellite, a Galileo satellite, a BeiDou Navigation Satellite System (BDS) satellite, a Quazi-Zenith Satellite System (QZSS) satellite, or a Navigation with Indian Constellation (NavIC) satellite. Multiple sources for positioning can be employed to enable a UE to have a greater absolute position accuracy, and to maintain position knowledge and accuracy for a longer duration of time.
When a UE (e.g., a first UE) chooses another UE (e.g., a second UE, which is a candidate anchor UE) as an anchor UE for sidelink positioning, it can preferable for the UE (e.g., the first UE) to choose a UE (e.g., a second UE) with the best position accuracy and a UE (e.g., a second UE) that is most likely to maintain that position accuracy for an extended duration of time. Knowing how a UE (e.g., a second UE, which is a candidate anchor UE) determined its position (e.g., using a single source or a diversity of sources), how long the position has been established, how long the UE (e.g., the second UE) expects the position to be known, the accuracy of the position, and the type of UE (e.g., a stationary UE or a mobile UE) can allow for a sidelink positioning UE (e.g., the first UE) to choose the most suitable UE (e.g., a second UE) as an anchor UE.
In 3GPP, SLPP procedures currently allow for UEs (e.g., candidate anchor UEs) to provide an indication of whether they can serve as an anchor UE and their position accuracy. However, currently, SLPP procedures do not allow for UE's to provide an indication of their type of UE (e.g., a stationary UE or a mobile UE), how their position was established, and the duration for which their position is expected to be valid.
When an anchor UE's position knowledge and/or position accuracy degrades or is lost, in some cases, the anchor UE may continue transmitting in order not to lose OTA transmission resources. In 3GPP, SLPP procedures currently do not support signaling that indicate via SLPP (e.g., via a flag) that, although the anchor UE is continuing to transmit assistance data, that data should at present be disregarded. Therefore, an improved technique to provide a more comprehensive listing of sidelink positioning anchor UE selection criteria (e.g., including the type of candidate anchor UE, how the position for the candidate anchor UE was established, and the duration for which the position of the candidate anchor UE is expected to be valid, as well as including an anchor UE indication of invalid and/or dated assistance information) can be useful.
In some aspects, the systems and techniques provide sidelink positioning anchor UE selection criteria. In one or more examples, a candidate anchor UE (e.g., a stationary UE or a mobile UE) can provide its ability to serve as an anchor UE for sidelink positioning along with its positioning accuracy. For a sidelink-capable UE to be able to choose the best candidate anchor UE for sidelink positioning, a sidelink-capable UE can benefit from receiving additional information about the candidate anchor UE. In one or more examples, the systems and techniques provide signaling mechanisms for a candidate anchor UE to provide to a sidelink-capable UE a comprehensive listing of anchor UE selection criteria (e.g., a comprehensive listing of information about the candidate anchor UE) for sidelink positioning. In some examples, the comprehensive listing of anchor UE selection criteria may include information about the candidate anchor UE, such as an indication of the candidate anchor UE's position, the candidate anchor UE's type of UE (e.g., a stationary UE or a mobile UE), how long the candidate anchor UE's position has been established (e.g., an age of the candidate anchor UE's position), how long the candidate anchor UE's position is expected to be valid (e.g., a validity duration of the candidate anchor UE's position), how the candidate anchor UE's position has been established (e.g., one or more sources used to obtain the candidate anchor UE's position), a source diversity for the candidate anchor UE's position, an accuracy duration for the candidate anchor UE's position, and/or the validity of assistance data provided by the candidate anchor UE (e.g., the assistance data validity for the candidate anchor UE's position). The use of this anchor UE selection criteria can allow for sidelink-capable UEs to be able to select one or more anchor UEs (e.g., from candidate anchor UEs) most suitable for employing for a sidelink positioning transaction.
In
In one or more examples, the network devices 720a, 720b (e.g., in the form of stationary RSUs) may obtain their respective positions based on geodetic survey sources. In some examples, the network device 730 (e.g., in the form of a mobile fire truck) may obtain its position based on sidelink signal sources (e.g., based on sidelink positioning), Uu signal sources (e.g., based on Uu positioning), Uu positioning sources, and/or WiFi positioning sources.
In
During operation of the system 700 of
The network device 710 can then receive from the network devices 720a, 720b, 730 the anchor selection criteria for each of the network devices 720a, 720b, 730. One or more processors of the network device 710 can then determine (e.g., choose), based on the received anchor selection criteria, one or more of the network devices 720a, 720b, 730 to serve as an anchor UE (e.g., an anchor device) for determining a position of the network device 710. For the example of
The one or more processors of the network device 710 can then determine the position of the network device 710 based on the chosen network device(s), such as network device 720a, which may be serving as an anchor UE. In one or more examples, the determining of the position of the network device 710 can include the network device 710 receiving, from the chosen network device(s) serving as the anchor UE (e.g., network device 720a), one or more sidelink signals. The network device 710 can then obtain measurements of the received one or more sidelink signals. The one or more processors of the network device 710 can then determine the position of the network device 710 based on the measurements of the one or more sidelink signals.
In one or more examples, the network device 820a (e.g., in the form of mobile fire truck FD1) may obtain its position based on GNSS sources. In some examples, network device 820a may use measurements from signals transmitted from GPS satellites 830a to obtain its position. In one or more examples, the network device 820b (e.g., in the form of mobile fire truck FD2) may obtain its position based on GNSS sources. In some examples, network device 820b may use measurements from signals transmitted from GPS satellites 830b and measurements from signals transmitted from GLONASS satellites 830b to obtain its position.
In
During operation of the system 800 of
The network device 810 may then receive from the network devices 820a, 820b the anchor selection criteria for each of the network devices 820a, 820b. One or more processors of the network device 810 may then determine (e.g., select), based on the received anchor selection criteria, one or more of the network devices 820a, 820b to serve as an anchor UE (e.g., an anchor device) for determining a position of the network device 810. For the example of
The one or more processors of the network device 810 may then determine the position of the network device 810 based on the selected network device(s), such as network device 820b, which may be serving as an anchor UE. In one or more examples, the determining of the position of the network device 810 can include the network device 810 receiving, from the chosen network device(s) serving as the anchor UE (e.g., network device 820b), one or more sidelink signals. The network device 810 may then obtain measurements of the received one or more sidelink signals. The one or more processors of the network device 810 may then determine the position of the network device 810 based on the measurements of the one or more sidelink signals.
In one or more examples, in the table 900 of
In the table 900, the SLPP anchor position source (SLPPAnchorPositionSource) 910 may be enumerated 970 by the specific type of source used to determine the position (e.g., GNSS source, survey source, Uu source, SL source, etc.). The SLPP anchor position source (SLPPAnchorPositionSource) 910 may also be specified as a sequence 980 (e.g., GNSS sources may be listed sequentially as GPS, GLONASS, Galileo, BDS, QZSS, and NavIC).
In one or more examples, the SLPP anchor position age (SLPPAnchorPositionAge) 930, the SLPP anchor position duration (SLPPAnchorPositionDur) 940, and the SLPP anchor position accuracy duration (SLPPAnchorPositionDur) 950 may include an elapsed time (TimeElapsed) 990. In some examples, the elapsed time (TimeElapsed) 990 may be specified in terms of days, hours, minutes, and/or seconds. In one or more examples, for the elapsed time (TimeElapsed) 990, the amount of days may be represented by an integer from zero to seven, the amount of hours may be represented by an integer from zero to 168, the amount of minutes may be represented by an integer from zero to 1440, and the amount of seconds may be represented by an integer from zero to 3600.
In one or more examples, the SLPP anchor position source diversity (SLPPAnchorPositionSourceDiversity) 920 is defined in table 1000 as specifying the GNSS sources a sidelink positioning anchor UE uses to determine its position. In one or more examples, the different GNSS sources may include, but are not limited to, GPS satellites, GLONASS) satellites, Galileo satellites, BDS satellites, QZSS satellites, and/or NavIC satellites.
In some examples, the SLPP anchor position age (SLPPAnchorPositionAge) 930 is defined in table 1000 as specifying the elapsed time duration (e.g., an amount of time, which can be defined in terms of days, hours, minutes, and/or seconds) for which a sidelink positioning anchor UE has established (e.g., confirmed) its position. In some examples, the SLPP anchor position age (SLPPAnchorPositionAge) 930 may be set to a value of all zeros to indicate infinity.
In one or more examples, the SLPP anchor position duration (SLPPAnchorPositionDur) 940 is defined in table 1000 as specifying the expected time duration (e.g., amount of time, which can be defined in terms of days, hours, minutes, and/or seconds) for which a sidelink positioning anchor UE position will be valid. For example, when an anchor UE's position is determined by using a GNSS source (e.g., satellite), the anchor UE's position may no longer be valid when the GNSS source (e.g., satellite) is no longer within view of the anchor UE. The anchor UE may know when the GNSS source will no longer be within its view and, as such, the anchor UE can know that its position will no longer be valid after that time. In one or more examples, the SLPP anchor position duration (SLPPAnchorPositionDur) 940 may be set to a value of all zeros to indicate infinity.
In some examples, the SLPP anchor position accuracy duration (SLPPAnchorPositionDur) 950 is defined in table 1000 as specifying the expected time duration (e.g., amount of time, which can be defined in terms of days, hours, minutes, and/or seconds) for which a sidelink positioning anchor UE position accuracy will be valid. For example, an anchor UE's position may be determined by using two different GNSS sources (e.g., a GPS satellite and a GLONASS satellite). When one of the types of GNSS sources (e.g., GPS satellite) is no longer within view of the anchor UE, the position accuracy will no longer be valid because the position will be less accurate when using less diversity of sources. The anchor UE may know when the GPS satellite will no longer be within its view and, as such, the anchor UE can know that its position accuracy will no longer be valid after that time. In one or more examples, the SLPP anchor position accuracy duration (SLPPAnchorPositionDur) 950 may be set to a value of all zeros to indicate infinity.
In one or more examples, the SLPP anchor assistance data validity (SLPPAnchorAssistanceDataValidity) 960 is defined in table 1000 as indicating that assistance data currently transmitted by a sidelink positioning anchor UE is invalid and the UEs should avoid using this anchor UE as a sidelink positioning anchor. For example, an anchor UE's position knowledge and/or position accuracy may be degraded or lost. However, in some cases, the anchor UE may continue transmitting to avoid losing OTA transmission resources. For these cases, the anchor UE may indicate that its assistance data is invalid (e.g., its data should be disregarded) and that it should not serve as an anchor UE.
At block 1110, the first network device (or component thereof) can receive, from a plurality of second network devices, respective anchor selection criteria for each second network device of the plurality of second network devices. In some cases, the respective anchor selection criteria is received via sidelink position protocol (SLPP) signaling. In some aspects, the respective anchor selection criteria for each second network device of the plurality of second network devices can include a respective type of user equipment (UE) of each second network device, one or more sources for a respective position of each second network device, an age of the respective position for each second network device, a validity duration for the respective position of each second network device, an accuracy duration for the respective position for each second network device, assistance data validity for the respective position for each second network device, the respective position of each second network device, a source diversity for the respective position for each second network device, any combination thereof, and/or other information.
In some aspects, the one or more sources for the respective position of each second network device can include one or more Global Navigation Satellite System (GNSS) sources, one or more geodetic survey sources, one or more sidelink (SL) signal sources, one or more wireless network (Uu) signal sources, one or more Uu positioning sources, one or more WiFi positioning sources, any combination thereof, and/or other sources. In some aspects, each GNSS source of the one or more GNSS sources a Global Positioning System (GPS) satellite, a Global Navigation Satellite System (GLONASS) satellite, a Galileo satellite, a BeiDou Navigation Satellite System (BDS) satellite, a Quazi-Zenith Satellite System (QZSS) satellite, or a Navigation with Indian Constellation (NavIC) satellite. In some examples, the respective type of UE is a stationary UE or a mobile UE. An illustrative example of the stationary UE is a roadside unit (RSU). Illustrative examples of the mobile UE include a vehicle, a mobile phone, or other mobile UE.
At block 1120, the first network device (or component thereof) can determine, based on the respective anchor selection criteria for each second network device of the plurality of second network devices, a network device from the plurality of second network devices as an anchor device for determining a position of the first network device.
At block 1130, the first network device (or component thereof) can determine the position of the first network device based on the anchor device. In some aspects, to determine the position of the first network device based on the anchor device, the first network device (or component thereof) can receive, from the anchor device, one or more sidelink (SL) signals and can determine the position of the first network device based on measurements of the one or more SL signals.
At block 1160, the first network device (or component thereof) can determine anchor selection criteria for the first network device. The anchor selection criteria for the first network device can include a type of user equipment (UE) of the first network device, one or more sources for a position of the first network device, an age of the position for the first network device, a validity duration for the position of the first network device, an accuracy duration for the position of the first network device, assistance data validity for the position of the first network device, the respective position of the first network device, a source diversity for the position of the first network device, any combination thereof, and/or other information.
In some aspects, the one or more sources for the position of the first network device can include one or more Global Navigation Satellite System (GNSS) sources, one or more geodetic survey sources, one or more sidelink (SL) signal sources, one or more wireless network (Uu) signal sources, one or more Uu positioning sources, one or more WiFi positioning sources, any combination thereof, and/or other sources. In some cases, each GNSS source of the one or more GNSS sources a Global Positioning System (GPS) satellite, a Global Navigation Satellite System (GLONASS) satellite, a Galileo satellite, a BeiDou Navigation Satellite System (BDS) satellite, a Quazi-Zenith Satellite System (QZSS) satellite, or a Navigation with Indian Constellation (NavIC) satellite. In some examples, the type of UE is a stationary UE or a mobile UE. An illustrative example of the stationary UE is a roadside unit (RSU). Illustrative examples of the mobile UE include a vehicle, a mobile phone, or other mobile UE.
At block 1170, the first network device (or component thereof) can transmit the anchor selection criteria to a second network device. In some cases, the anchor selection criteria is transmitted via sidelink position protocol (SLPP) signaling.
In some cases, the network devices configured to perform the operations of process 1100 and/or process 1150 may include various components, such as one or more input devices, one or more output devices, one or more processors, one or more microprocessors, one or more microcomputers, one or more cameras, one or more sensors, and/or other component(s) that are configured to carry out the steps of processes described herein. In some examples, the device may include a display, one or more network interfaces configured to communicate and/or receive the data, any combination thereof, and/or other component(s). The one or more network interfaces may be configured to communicate and/or receive wired and/or wireless data, including data according to the 3G, 4G, 5G, and/or other cellular standard, data according to the Wi-Fi (802.11x) standards, data according to the Bluetooth™ standard, data according to the Internet Protocol (IP) standard, and/or other types of data.
The components of the device can be implemented in circuitry. For example, the components can include and/or can be implemented using electronic circuits or other electronic hardware, which can include one or more programmable electronic circuits (e.g., microprocessors, graphics processing units (GPUs), digital signal processors (DSPs), central processing units (CPUs), and/or other suitable electronic circuits), and/or can include and/or be implemented using computer software, firmware, or any combination thereof, to perform the various operations described herein. The computing device may further include a display (as an example of the output device or in addition to the output device), a network interface configured to communicate and/or receive the data, any combination thereof, and/or other component(s). The network interface may be configured to communicate and/or receive Internet Protocol (IP) based data or other type of data.
The process 1100 is illustrated as a logical flow diagram, the operations of which represent a sequence of operations that can be implemented in hardware, computer instructions, or a combination thereof. In the context of computer instructions, the operations represent computer-executable instructions stored on one or more computer-readable storage media that, when executed by one or more processors, perform the recited operations. Generally, computer-executable instructions include routines, programs, objects, components, data structures, and the like that perform particular functions or implement particular data types. The order in which the operations are described is not intended to be construed as a limitation, and any number of the described operations can be combined in any order and/or in parallel to implement the processes.
Additionally, the process 1100 may be performed under the control of one or more computer systems configured with executable instructions and may be implemented as code (e.g., executable instructions, one or more computer programs, or one or more applications) executing collectively on one or more processors, by hardware, or combinations thereof. As noted above, the code may be stored on a computer-readable or machine-readable storage medium, for example, in the form of a computer program comprising a plurality of instructions executable by one or more processors. The computer-readable or machine-readable storage medium may be non-transitory.
In some aspects, computing system 1200 is a distributed system in which the functions described in this disclosure can be distributed within a datacenter, multiple data centers, a peer network, etc. In some aspects, one or more of the described system components represents many such components each performing some or all of the function for which the component is described. In some aspects, the components can be physical or virtual devices.
Example system 1200 includes at least one processing unit (CPU or processor) 1210 and connection 1205 that communicatively couples various system components including system memory 1215, such as read-only memory (ROM) 1220 and random access memory (RAM) 1225 to processor 1210. Computing system 1200 can include a cache 1212 of high-speed memory connected directly with, in close proximity to, or integrated as part of processor 1210.
Processor 1210 can include any general purpose processor and a hardware service or software service, such as services 1232, 1234, and 1236 stored in storage device 1230, configured to control processor 1210 as well as a special-purpose processor where software instructions are incorporated into the actual processor design. Processor 1210 may essentially be a completely self-contained computing system, containing multiple cores or processors, a bus, memory controller, cache, etc. A multi-core processor may be symmetric or asymmetric.
To enable user interaction, computing system 1200 includes an input device 1245, which can represent any number of input mechanisms, such as a microphone for speech, a touch-sensitive screen for gesture or graphical input, keyboard, mouse, motion input, speech, etc. Computing system 1200 can also include output device 1235, which can be one or more of a number of output mechanisms. In some instances, multimodal systems can enable a user to provide multiple types of input/output to communicate with computing system 1200.
Computing system 1200 can include communications interface 1240, which can generally govern and manage the user input and system output. The communication interface may perform or facilitate receipt and/or transmission wired or wireless communications using wired and/or wireless transceivers, including those making use of an audio jack/plug, a microphone jack/plug, a universal serial bus (USB) port/plug, an Apple™ Lightning™ port/plug, an Ethernet port/plug, a fiber optic port/plug, a proprietary wired port/plug, 3G, 4G, 5G and/or other cellular data network wireless signal transfer, a Bluetooth™ wireless signal transfer, a Bluetooth™ low energy (BLE) wireless signal transfer, an IBEACON™ wireless signal transfer, a radio-frequency identification (RFID) wireless signal transfer, near-field communications (NFC) wireless signal transfer, dedicated short range communication (DSRC) wireless signal transfer, 802.11 Wi-Fi wireless signal transfer, wireless local area network (WLAN) signal transfer, Visible Light Communication (VLC), Worldwide Interoperability for Microwave Access (WiMAX), Infrared (IR) communication wireless signal transfer, Public Switched Telephone Network (PSTN) signal transfer, Integrated Services Digital Network (ISDN) signal transfer, ad-hoc network signal transfer, radio wave signal transfer, microwave signal transfer, infrared signal transfer, visible light signal transfer, ultraviolet light signal transfer, wireless signal transfer along the electromagnetic spectrum, or some combination thereof.
The communications interface 1240 may also include one or more range sensors (e.g., LIDAR sensors, laser range finders, RF radars, ultrasonic sensors, and infrared (IR) sensors) configured to collect data and provide measurements to processor 1210, whereby processor 1210 can be configured to perform determinations and calculations needed to obtain various measurements for the one or more range sensors. In some examples, the measurements can include time of flight, wavelengths, azimuth angle, elevation angle, range, linear velocity and/or angular velocity, or any combination thereof. The communications interface 1240 may also include one or more Global Navigation Satellite System (GNSS) receivers or transceivers that are used to determine a location of the computing system 1200 based on receipt of one or more signals from one or more satellites associated with one or more GNSS systems. GNSS systems include, but are not limited to, the US-based GPS, the Russia-based Global Navigation Satellite System (GLONASS), the China-based BeiDou Navigation Satellite System (BDS), and the Europe-based Galileo GNSS. There is no restriction on operating on any particular hardware arrangement, and therefore the basic features here may easily be substituted for improved hardware or firmware arrangements as they are developed.
Storage device 1230 can be a non-volatile and/or non-transitory and/or computer-readable medium (e.g., computer-readable memory device) and can be a hard disk or other types of computer readable media which can store data that are accessible by a computer, such as magnetic cassettes, flash memory cards, solid state memory devices, digital versatile disks, cartridges, a floppy disk, a flexible disk, a hard disk, magnetic tape, a magnetic strip/stripe, any other magnetic storage medium, flash memory, memristor memory, any other solid-state memory, a compact disc read only memory (CD-ROM) optical disc, a rewritable compact disc (CD) optical disc, digital video disk (DVD) optical disc, a blu-ray disc (BDD) optical disc, a holographic optical disk, another optical medium, a secure digital (SD) card, a micro secure digital (microSD) card, a Memory Stick® card, a smartcard chip, a EMV chip, a subscriber identity module (SIM) card, a mini/micro/nano/pico SIM card, another integrated circuit (IC) chip/card, random access memory (RAM), static RAM (SRAM), dynamic RAM (DRAM), read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), flash EPROM (FLASHEPROM), cache memory (e.g., Level 1 (L1) cache, Level 2 (L2) cache, Level 3 (L3) cache, Level 4 (L4) cache, Level 5 (L5) cache, or other (L#) cache), resistive random-access memory (RRAM/ReRAM), phase change memory (PCM), spin transfer torque RAM (STT-RAM), another memory chip or cartridge, and/or a combination thereof.
The storage device 1230 can include software services, servers, services, etc., that when the code that defines such software is executed by the processor 1210, it causes the system to perform a function. In some aspects, a hardware service that performs a particular function can include the software component stored in a computer-readable medium in connection with the necessary hardware components, such as processor 1210, connection 1205, output device 1235, etc., to carry out the function. The term “computer-readable medium” includes, but is not limited to, portable or non-portable storage devices, optical storage devices, and various other mediums capable of storing, containing, or carrying instruction(s) and/or data. A computer-readable medium may include a non-transitory medium in which data can be stored and that does not include carrier waves and/or transitory electronic signals propagating wirelessly or over wired connections. Examples of a non-transitory medium may include, but are not limited to, a magnetic disk or tape, optical storage media such as compact disk (CD) or digital versatile disk (DVD), flash memory, memory or memory devices. A computer-readable medium may have stored thereon code and/or machine-executable instructions that may represent a procedure, a function, a subprogram, a program, a routine, a subroutine, a module, a software package, a class, or any combination of instructions, data structures, or program statements. A code segment may be coupled to another code segment or a hardware circuit by passing and/or receiving information, data, arguments, parameters, or memory contents. Information, arguments, parameters, data, etc. may be passed, forwarded, or transmitted via any suitable means including memory sharing, message passing, token passing, network transmission, or the like.
Specific details are provided in the description above to provide a thorough understanding of the aspects and examples provided herein, but those skilled in the art will recognize that the application is not limited thereto. Thus, while illustrative aspects of the application have been described in detail herein, it is to be understood that the inventive concepts may be otherwise variously embodied and employed, and that the appended claims are intended to be construed to include such variations, except as limited by the prior art. Various features and aspects of the above-described application may be used individually or jointly. Further, aspects can be utilized in any number of environments and applications beyond those described herein without departing from the broader scope of the specification. The specification and drawings are, accordingly, to be regarded as illustrative rather than restrictive. For the purposes of illustration, methods were described in a particular order. It should be appreciated that in alternate aspects, the methods may be performed in a different order than that described.
For clarity of explanation, in some instances the present technology may be presented as including individual functional blocks comprising devices, device components, steps or routines in a method embodied in software, or combinations of hardware and software. Additional components may be used other than those shown in the figures and/or described herein. For example, circuits, systems, networks, processes, and other components may be shown as components in block diagram form in order not to obscure the aspects in unnecessary detail. In other instances, well-known circuits, processes, algorithms, structures, and techniques may be shown without unnecessary detail in order to avoid obscuring the aspects.
Further, those of skill in the art will appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the aspects disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.
Individual aspects may be described above as a process or method which is depicted as a flowchart, a flow diagram, a data flow diagram, a structure diagram, or a block diagram. Although a flowchart may describe the operations as a sequential process, many of the operations can be performed in parallel or concurrently. In addition, the order of the operations may be re-arranged. A process is terminated when its operations are completed, but could have additional steps not included in a figure. A process may correspond to a method, a function, a procedure, a subroutine, a subprogram, etc. When a process corresponds to a function, its termination can correspond to a return of the function to the calling function or the main function.
Processes and methods according to the above-described examples can be implemented using computer-executable instructions that are stored or otherwise available from computer-readable media. Such instructions can include, for example, instructions and data which cause or otherwise configure a general purpose computer, special purpose computer, or a processing device to perform a certain function or group of functions. Portions of computer resources used can be accessible over a network. The computer executable instructions may be, for example, binaries, intermediate format instructions such as assembly language, firmware, source code. Examples of computer-readable media that may be used to store instructions, information used, and/or information created during methods according to described examples include magnetic or optical disks, flash memory, USB devices provided with non-volatile memory, networked storage devices, and so on.
In some aspects the computer-readable storage devices, mediums, and memories can include a cable or wireless signal containing a bitstream and the like. However, when mentioned, non-transitory computer-readable storage media expressly exclude media such as energy, carrier signals, electromagnetic waves, and signals per se.
Those of skill in the art will appreciate that information and signals may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof, in some cases depending in part on the particular application, in part on the desired design, in part on the corresponding technology, etc.
The various illustrative logical blocks, modules, and circuits described in connection with the aspects disclosed herein may be implemented or performed using hardware, software, firmware, middleware, microcode, hardware description languages, or any combination thereof, and can take any of a variety of form factors. When implemented in software, firmware, middleware, or microcode, the program code or code segments to perform the necessary tasks (e.g., a computer-program product) may be stored in a computer-readable or machine-readable medium. A processor(s) may perform the necessary tasks. Examples of form factors include laptops, smartphones, mobile phones, tablet devices or other small form factor personal computers, personal digital assistants, rackmount devices, standalone devices, and so on. Functionality described herein also can be embodied in peripherals or add-in cards. Such functionality can also be implemented on a circuit board among different chips or different processes executing in a single device, by way of further example.
The instructions, media for conveying such instructions, computing resources for executing them, and other structures for supporting such computing resources are example means for providing the functions described in the disclosure.
The techniques described herein may also be implemented in electronic hardware, computer software, firmware, or any combination thereof. Such techniques may be implemented in any of a variety of devices such as general purposes computers, wireless communication device handsets, or integrated circuit devices having multiple uses including application in wireless communication device handsets and other devices. Any features described as modules or components may be implemented together in an integrated logic device or separately as discrete but interoperable logic devices. If implemented in software, the techniques may be realized at least in part by a computer-readable data storage medium comprising program code including instructions that, when executed, performs one or more of the methods, algorithms, and/or operations described above. The computer-readable data storage medium may form part of a computer program product, which may include packaging materials. The computer-readable medium may comprise memory or data storage media, such as random access memory (RAM) such as synchronous dynamic random access memory (SDRAM), read-only memory (ROM), non-volatile random access memory (NVRAM), electrically erasable programmable read-only memory (EEPROM), FLASH memory, magnetic or optical data storage media, and the like. The techniques additionally, or alternatively, may be realized at least in part by a computer-readable communication medium that carries or communicates program code in the form of instructions or data structures and that can be accessed, read, and/or executed by a computer, such as propagated signals or waves.
The program code may be executed by a processor, which may include one or more processors, such as one or more digital signal processors (DSPs), general purpose microprocessors, an application specific integrated circuits (ASICs), field programmable logic arrays (FPGAs), or other equivalent integrated or discrete logic circuitry. Such a processor may be configured to perform any of the techniques described in this disclosure. A general-purpose processor may be a microprocessor; but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration. Accordingly, the term “processor,” as used herein may refer to any of the foregoing structure, any combination of the foregoing structure, or any other structure or apparatus suitable for implementation of the techniques described herein.
One of ordinary skill will appreciate that the less than (“<”) and greater than (“>”) symbols or terminology used herein can be replaced with less than or equal to (“<”) and greater than or equal to (“>”) symbols, respectively, without departing from the scope of this description.
Where components are described as being “configured to” perform certain operations, such configuration can be accomplished, for example, by designing electronic circuits or other hardware to perform the operation, by programming programmable electronic circuits (e.g., microprocessors, or other suitable electronic circuits) to perform the operation, or any combination thereof.
The phrase “coupled to” or “communicatively coupled to” refers to any component that is physically connected to another component either directly or indirectly, and/or any component that is in communication with another component (e.g., connected to the other component over a wired or wireless connection, and/or other suitable communication interface) either directly or indirectly.
Claim language or other language reciting “at least one of” a set and/or “one or more” of a set indicates that one member of the set or multiple members of the set (in any combination) satisfy the claim. For example, claim language reciting “at least one of A and B” or “at least one of A or B” means A, B, or A and B. In another example, claim language reciting “at least one of A, B, and C” or “at least one of A, B, or C” means A, B, C, or A and B, or A and C, or B and C, A and B and C, or any duplicate information or data (e.g., A and A, B and B, C and C, A and A and B, and so on), or any other ordering, duplication, or combination of A, B, and C. The language “at least one of” a set and/or “one or more” of a set does not limit the set to the items listed in the set. For example, claim language reciting “at least one of A and B” or “at least one of A or B” may mean A, B, or A and B, and may additionally include items not listed in the set of A and B. The phrases “at least one” and “one or more” are used interchangeably herein.
Claim language or other language reciting “at least one processor configured to,” “at least one processor being configured to,” “one or more processors configured to,” “one or more processors being configured to,” or the like indicates that one processor or multiple processors (in any combination) can perform the associated operation(s). For example, claim language reciting “at least one processor configured to: X, Y, and Z” means a single processor can be used to perform operations X, Y, and Z; or that multiple processors are each tasked with a certain subset of operations X, Y, and Z such that together the multiple processors perform X, Y, and Z; or that a group of multiple processors work together to perform operations X, Y, and Z. In another example, claim language reciting “at least one processor configured to: X, Y, and Z” can mean that any single processor may only perform at least a subset of operations X, Y, and Z.
Where reference is made to one or more elements performing functions (e.g., steps of a method), one element may perform all functions, or more than one element may collectively perform the functions. When more than one element collectively performs the functions, each function need not be performed by each of those elements (e.g., different functions may be performed by different elements) and/or each function need not be performed in whole by only one element (e.g., different elements may perform different sub-functions of a function). Similarly, where reference is made to one or more elements configured to cause another element (e.g., an apparatus) to perform functions, one element may be configured to cause the other element to perform all functions, or more than one element may collectively be configured to cause the other element to perform the functions.
Where reference is made to an entity (e.g., any entity or device described herein) performing functions or being configured to perform functions (e.g., steps of a method), the entity may be configured to cause one or more elements (individually or collectively) to perform the functions. The one or more components of the entity may include at least one memory, at least one processor, at least one communication interface, another component configured to perform one or more (or all) of the functions, and/or any combination thereof. Where reference to the entity performing functions, the entity may be configured to cause one component to perform all functions, or to cause more than one component to collectively perform the functions. When the entity is configured to cause more than one component to collectively perform the functions, each function need not be performed by each of those components (e.g., different functions may be performed by different components) and/or each function need not be performed in whole by only one component (e.g., different components may perform different sub-functions of a function).
The various illustrative logical blocks, modules, engines, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, firmware, or combinations thereof. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, engines, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The techniques described herein may also be implemented in electronic hardware, computer software, firmware, or any combination thereof. Such techniques may be implemented in any of a variety of devices such as general purposes computers, wireless communication device handsets, or integrated circuit devices having multiple uses including application in wireless communication device handsets and other devices. Any features described as engines, modules, or components may be implemented together in an integrated logic device or separately as discrete but interoperable logic devices. If implemented in software, the techniques may be realized at least in part by a computer-readable data storage medium comprising program code including instructions that, when executed, performs one or more of the methods described above. The computer-readable data storage medium may form part of a computer program product, which may include packaging materials. The computer-readable medium may comprise memory or data storage media, such as random access memory (RAM) such as synchronous dynamic random access memory (SDRAM), read-only memory (ROM), non-volatile random access memory (NVRAM), electrically erasable programmable read-only memory (EEPROM), FLASH memory, magnetic or optical data storage media, and the like. The techniques additionally, or alternatively, may be realized at least in part by a computer-readable communication medium that carries or communicates program code in the form of instructions or data structures and that can be accessed, read, and/or executed by a computer, such as propagated signals or waves.
The program code may be executed by a processor, which may include one or more processors, such as one or more digital signal processors (DSPs), general purpose microprocessors, an application specific integrated circuits (ASICs), field programmable logic arrays (FPGAs), or other equivalent integrated or discrete logic circuitry. Such a processor may be configured to perform any of the techniques described in this disclosure. A general purpose processor may be a microprocessor; but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration. Accordingly, the term “processor,” as used herein may refer to any of the foregoing structure, any combination of the foregoing structure, or any other structure or apparatus suitable for implementation of the techniques described herein. In addition, in some aspects, the functionality described herein may be provided within dedicated software modules or hardware modules configured for encoding and decoding, or incorporated in a combined video encoder-decoder (CODEC).
Illustrative aspects of the disclosure include:
Aspect 1. A first network device for wireless communications, the first network device comprising: at least one memory; and at least one processor coupled to the at least one memory and configured to: receive, from a plurality of second network devices, respective anchor selection criteria for each second network device of the plurality of second network devices; determine, based on the respective anchor selection criteria for each second network device of the plurality of second network devices, a network device from the plurality of second network devices as an anchor device for determining a position of the first network device; and determine the position of the first network device based on the anchor device.
Aspect 2. The first network device of Aspect 1, wherein the respective anchor selection criteria for each second network device of the plurality of second network devices comprises at least one of a respective type of user equipment (UE) of each second network device, one or more sources for a respective position of each second network device, an age of the respective position for each second network device, a validity duration for the respective position of each second network device, an accuracy duration for the respective position for each second network device, or assistance data validity for the respective position for each second network device.
Aspect 3. The first network device of Aspect 2, wherein the respective anchor selection criteria for each second network device of the plurality of second network devices further comprises at least one of the respective position of each second network device or a source diversity for the respective position for each second network device.
Aspect 4. The first network device of any one of Aspects 2 or 3, wherein the one or more sources for the respective position of each second network device includes at least one of one or more Global Navigation Satellite System (GNSS) sources, one or more geodetic survey sources, one or more sidelink (SL) signal sources, one or more wireless network (Uu) signal sources, one or more Uu positioning sources, or one or more WiFi positioning sources.
Aspect 5. The first network device of Aspect 4, wherein each GNSS source of the one or more GNSS sources is one of a Global Positioning System (GPS) satellite, a Global Navigation Satellite System (GLONASS) satellite, a Galileo satellite, a BeiDou Navigation Satellite System (BDS) satellite, a Quazi-Zenith Satellite System (QZSS) satellite, or a Navigation with Indian Constellation (NavIC) satellite.
Aspect 6. The first network device of any one of Aspects 2 to 5, wherein the respective type of UE is a stationary UE or a mobile UE.
Aspect 7. The first network device of Aspect 6, wherein the stationary UE is a roadside unit (RSU).
Aspect 8. The first network device of any one of Aspects 6 or 7, wherein the mobile UE is a vehicle or a mobile phone.
Aspect 9. The first network device of any one of Aspects 1 to 8, wherein, to determine the position of the first network device based on the anchor device, the at least one processor is configured to: receive, by the first network device from the anchor device, one or more sidelink (SL) signals; and determine, by the first network device, the position of the first network device based on measurements of the one or more SL signals.
Aspect 10. The first network device of any one of Aspects 1 to 9, wherein the at least one processor is configured to receive the respective anchor selection criteria via sidelink position protocol (SLPP) signaling.
Aspect 11. A method for wireless communications at a first network device, the method comprising: receiving, by the first network device from a plurality of second network devices, respective anchor selection criteria for each second network device of the plurality of second network devices; determining, by the first network device based on the respective anchor selection criteria for each second network device of the plurality of second network devices, a network device from the plurality of second network devices as an anchor device for determining a position of the first network device; and determining the position of the first network device based on the anchor device.
Aspect 12. The method of Aspect 11, wherein the respective anchor selection criteria for each second network device of the plurality of second network devices comprises at least one of a respective type of user equipment (UE) of each second network device, one or more sources for a respective position of each second network device, an age of the respective position for each second network device, a validity duration for the respective position of each second network device, an accuracy duration for the respective position for each second network device, or assistance data validity for the respective position for each second network device.
Aspect 13. The method of Aspect 12, wherein the respective anchor selection criteria for each second network device of the plurality of second network devices further comprises at least one of the respective position of each second network device or a source diversity for the respective position for each second network device.
Aspect 14. The method of any one of Aspects 12 or 13, wherein the one or more sources for the respective position of each second network device includes at least one of one or more Global Navigation Satellite System (GNSS) sources, one or more geodetic survey sources, one or more sidelink (SL) signal sources, one or more wireless network (Uu) signal sources, one or more Uu positioning sources, or one or more WiFi positioning sources.
Aspect 15. The method of Aspect 14, wherein each GNSS source of the one or more GNSS sources is one of a Global Positioning System (GPS) satellite, a Global Navigation Satellite System (GLONASS) satellite, a Galileo satellite, a BeiDou Navigation Satellite System (BDS) satellite, a Quazi-Zenith Satellite System (QZSS) satellite, or a Navigation with Indian Constellation (NavIC) satellite.
Aspect 16. The method of any one of Aspects 12 to 15, wherein the respective type of UE is a stationary UE or a mobile UE.
Aspect 17. The method of Aspect 16, wherein the stationary UE is a roadside unit (RSU).
Aspect 18. The method of any one of Aspects 16 or 17, wherein the mobile UE is a vehicle or a mobile phone.
Aspect 19. The method of any one of Aspects 11 to 18, wherein determining the position of the first network device based on the anchor device comprises: receiving, by the first network device from the anchor device, one or more sidelink (SL) signals; and determining, by the first network device, the position of the first network device based on measurements of the one or more SL signals.
Aspect 20. The method of any one of Aspects 11 to 19, wherein the respective anchor selection criteria is received via sidelink position protocol (SLPP) signaling.
Aspect 21. A first network device for wireless communications, the first network device comprising: at least one memory; and at least one processor coupled to the at least one memory and configured to: determine anchor selection criteria for the first network device, wherein the anchor selection criteria for the first network device comprises at least one of a type of user equipment (UE) of the first network device, one or more sources for a position of the first network device, an age of the position for the first network device, a validity duration for the position of the first network device, an accuracy duration for the position of the first network device, or assistance data validity for the position of the first network device; and output the anchor selection criteria for transmission to a second network device.
Aspect 22. The first network device of Aspect 21, wherein the anchor selection criteria for the first network device further comprises at least one of the respective position of the first network device or a source diversity for the position of the first network device.
Aspect 23. The first network device of any one of Aspects 21 or 22, wherein the one or more sources for the position of the first network device includes at least one of one or more Global Navigation Satellite System (GNSS) sources, one or more geodetic survey sources, one or more sidelink (SL) signal sources, one or more wireless network (Uu) signal sources, one or more Uu positioning sources, or one or more WiFi positioning sources.
Aspect 24. The first network device of Aspect 23, wherein each GNSS source of the one or more GNSS sources is one of a Global Positioning System (GPS) satellite, a Global Navigation Satellite System (GLONASS) satellite, a Galileo satellite, a BeiDou Navigation Satellite System (BDS) satellite, a Quazi-Zenith Satellite System (QZSS) satellite, or a Navigation with Indian Constellation (NavIC) satellite.
Aspect 25. The first network device of any one of Aspects 21 to 24, wherein the type of UE is a stationary UE or a mobile UE.
Aspect 26. The first network device of Aspect 25, wherein the stationary UE is a roadside unit (RSU).
Aspect 27. The first network device of any one of Aspects 25 or 26, wherein the mobile UE is a vehicle or a mobile phone.
Aspect 28. The first network device of any one of Aspects 21 to 27, wherein the at least one processor is configured to output the anchor selection criteria for transmission via sidelink position protocol (SLPP) signaling.
Aspect 29. A method for wireless communications at a first network device, the method comprising: determining anchor selection criteria for the first network device, wherein the anchor selection criteria for the first network device comprises at least one of a type of user equipment (UE) of the first network device, one or more sources for a position of the first network device, an age of the position for the first network device, a validity duration for the position of the first network device, an accuracy duration for the position of the first network device, or assistance data validity for the position of the first network device; and transmitting the anchor selection criteria to a second network device.
Aspect 30. The method of Aspect 29, wherein the anchor selection criteria for the first network device further comprises at least one of the respective position of the first network device or a source diversity for the position of the first network device.
Aspect 31. The method of any one of Aspects 29 or 30, wherein the one or more sources for the position of the first network device includes at least one of one or more Global Navigation Satellite System (GNSS) sources, one or more geodetic survey sources, one or more sidelink (SL) signal sources, one or more wireless network (Uu) signal sources, one or more Uu positioning sources, or one or more WiFi positioning sources.
Aspect 32. The method of Aspect 31, wherein each GNSS source of the one or more GNSS sources is one of a Global Positioning System (GPS) satellite, a Global Navigation Satellite System (GLONASS) satellite, a Galileo satellite, a BeiDou Navigation Satellite System (BDS) satellite, a Quazi-Zenith Satellite System (QZSS) satellite, or a Navigation with Indian Constellation (NavIC) satellite.
Aspect 33. The method of any one of Aspects 29 to 32, wherein the type of UE is a stationary UE or a mobile UE.
Aspect 34. The method of Aspect 33, wherein the stationary UE is a roadside unit (RSU).
Aspect 35. The method of any one of Aspects 33 or 34, wherein the mobile UE is a vehicle or a mobile phone.
Aspect 36. The method of any one of Aspects 29 to 35, wherein the anchor selection criteria is transmitted via sidelink position protocol (SLPP) signaling.
Aspect 37. An apparatus comprising one or more means for performing operations according to any of Aspects 11 to 20.
Aspect 38. A non-transitory computer-readable medium storing instructions which, when executed by at least one processor, cause the at least one processor to perform operations according to any of Aspects 11 to 20.
Aspect 39. An apparatus comprising one or more means for performing operations according to any of Aspects 29 to 36.
Aspect 40. A non-transitory computer-readable medium storing instructions which, when executed by at least one processor, cause the at least one processor to perform operations according to any of Aspects 29 to 36.
The previous description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects. Thus, the claims are not intended to be limited to the aspects shown herein, but is to be accorded the full scope consistent with the language claims, wherein reference to an element in the singular is not intended to mean “one and only one” unless specifically so stated, but rather “one or more.”
