Patent Application
20230060101
The present disclosure relates, in general, to wireless communications and, more particularly, systems and methods including a network availability timer for Non-Terrestrial Networks (NTN).
In 3rd Generation Partnership Project (3GPP) Release 8, the Evolved Packet System (EPS) was specified. EPS is based on the Long-Term Evolution (LTE) radio network and the Evolved Packet Core (EPC). It was originally intended to provide voice and mobile broadband (MBB) services but has continuously evolved to broaden its functionality. Since Release 13, Narrowband-Internet of Things (NB-IoT) and Long Term Evolution for Machines (LTE-M) are part of the LTE specifications and provide connectivity to massive machine type communications (mMTC) services.
In 3GPP Release 15, the first release of the 5G system (5GS) was specified. This is a new generation's radio access technology intended to serve use cases such as enhanced mobile broadband (eMBB), ultra-reliable and low latency communication (URLLC), and mMTC. 5G includes the New Radio (NR) access stratum interface and the 5G Core Network (5GC). The NR physical and higher layers are reusing parts of the LTE specification, and to that add needed components when motivated by new use cases. One such component is the introduction of a sophisticated framework for beam forming and beam management to extend the support of the 3GPP technologies to a frequency range going beyond 6 GHz.
In Release 15, 3GPP started the work to prepare NR for operation in a Non-Terrestrial Network (NTN). The work was performed within the study item “NR to support Non-Terrestrial Networks” and resulted in 3GPP TR 38.811. In Release 16, the work to prepare NR for operation in an NTN network continued with the study item “Solutions for NR to support Non-Terrestrial Network.” See, 3GPP TR 38.821. In parallel, the interest to adapt NB-IoT and LTE-M for operation in NTN is growing. As a consequence, 3GPP Release 17 contains both a work item on NR NTN and a study item on NB-IoT and LTE-M support for NTN. See, RP-193234, Solutions for NR to support non-terrestrial networks (NTN), 3GPP RAN #86; RP-193235, Study on NB-Io/eMTC support for Non-Terrestrial Network, 3GPP RAN #86.
In 3GPP, NTN includes both satellite communication and communications using high-altitude platforms (HAPs). Though this section focuses on satellite communication, the provided description could also be applied to a HAP network.
A satellite radio access network usually includes the following components:
Depending on the orbit altitude, a satellite may be categorized as low earth orbit (LEO), medium earth orbit (MEO), or geostationary earth orbit (GEO) satellite:
A communication satellite typically generates several beams over a given area. The footprint of a beam is usually in an elliptic shape, which has been traditionally considered as a cell. The footprint of a beam is also often referred to as a spotbeam. The footprint of a beam may move over the earth surface with the satellite movement or may be earth fixed with some beam pointing mechanism used by the satellite to compensate for its motion. The size of a spotbeam depends on the system design, which may range from tens of kilometers to a few thousands of kilometers.
In a LEO or MEO communication system, a large number of satellites deployed over a range of orbits are required to provide continuous coverage across the full globe. An example presented in 3GPP TR 38.821 includes a LEO 600 km constellation providing full coverage in the S-band. This example consists of 17 orbits, with each orbit defined by 30 satellites, each generating 469 beams. A total of 17×30=510 satellites produce 17×30×469=239,190 beams. See, R1-1911858, Discussion on performance evaluation for NTN, Huawei, 3GPP RAN1 #99. It is clear that if each satellite supports less beams, then the number of satellites needs to be increased beyond 510 in order to achieve full earth-coverage.
Launching a mega satellite constellation is both an expensive and time-consuming procedure. It is, therefore, expected that all LEO and MEO satellite constellations for some time will only provide partial earth-coverage. In case of some constellations dedicated to massive IoT services with relaxed latency requirements, it may not even be necessary to support full earth-coverage. It may be sufficient to provide occasional or periodic coverage according to the orbital period of the constellation.
It would be desirable to provide new ways for wireless devices (such as UEs) to deal with the partial/limited network availability provided by some NTNs.
Certain aspects of the present disclosure and their embodiments may provide solutions to these or other challenges. For example, according to certain embodiments, methods are provided for allowing UEs to determine the availability of a RAN providing intermittent coverage, e.g. a moving RAN.
According to certain embodiments, a method by a wireless device includes determining that a NTN is unavailable to the wireless device and/or will be unavailable to the wireless device. The wireless device determines not to perform an inactive mode or idle mode procedure during a period of time when the NTN is unavailable to the wireless device.
According to certain embodiments, a wireless device includes processing circuitry configured to determine that a NTN is unavailable to the wireless device and/or will be unavailable to the wireless device. The processing circuitry is configured to determine not to perform an inactive mode or idle mode procedure during a period of time when the NTN is unavailable to the wireless device.
According to certain embodiments, a method by a network node associated with a NTN includes determining a period of time when the NTN is unavailable to a wireless device and/or will be unavailable to the wireless device. The network node transmits, to the wireless device, information indicating the period of time when the NTN is and/or will be unavailable to the wireless device.
According to certain embodiments, a network node includes processing circuitry configured to determine a period of time when a NTN is unavailable to a wireless device and/or will be unavailable to the wireless device. The processing circuitry is configured to transmit, to the wireless device, information indicating the period of time when the NTN is and/or will be unavailable to the wireless device.
According to certain embodiments, a method by a network node associated with a NTN includes transmitting, to a wireless device, information indicating that the NTN is unavailable to the wireless device and/or will be unavailable to the wireless device.
According to certain embodiments, a network node includes processing circuitry configured to transmit, to a wireless device, information indicating that a NTN is unavailable to the wireless device and/or will be unavailable to the wireless device.
Certain embodiments may provide one or more of the following technical advantages. For example, one technical advantage may be that certain embodiments allow UEs to optimize their power consumption during periods when a moving RAN is unavailable.
Other advantages may be readily apparent to one having skill in the art. Certain embodiments may have none, some, or all of the recited advantages.
For a more complete understanding of the disclosed embodiments and their features and advantages, reference is now made to the following description, taken in conjunction with the accompanying drawings, in which:
Some of the embodiments contemplated herein will now be described more fully with reference to the accompanying drawings. Other embodiments, however, are contained within the scope of the subject matter disclosed herein, the disclosed subject matter should not be construed as limited to only the embodiments set forth herein; rather, these embodiments are provided by way of example to convey the scope of the subject matter to those skilled in the art.
Generally, all terms used herein are to be interpreted according to their ordinary meaning in the relevant technical field, unless a different meaning is clearly given and/or is implied from the context in which it is used. All references to a/an/the element, apparatus, component, means, step, etc. are to be interpreted openly as referring to at least one instance of the element, apparatus, component, means, step, etc., unless explicitly stated otherwise. The steps of any methods disclosed herein do not have to be performed in the exact order disclosed, unless a step is explicitly described as following or preceding another step and/or where it is implicit that a step must follow or precede another step. Any feature of any of the embodiments disclosed herein may be applied to any other embodiment, wherever appropriate. Likewise, any advantage of any of the embodiments may apply to any other embodiments, and vice versa. Other objectives, features and advantages of the enclosed embodiments will be apparent from the following description.
In some embodiments, a more general term “network node” may be used and may correspond to any type of radio network node or any network node, which communicates with a UE (directly or via another node) and/or with another network node. Examples of network nodes are NodeB, Master eNodeB (MeNB), a network node belonging to Master Cell Group (MCG) or Secondary Cell Group (SCG), base station (BS), multi-standard radio (MSR) radio node such as MSR BS, eNodeB (eNB), gNodeB (gNB), network controller, radio network controller (RNC), base station controller (BSC), relay, donor node controlling relay, base transceiver station (BTS), access point (AP), transmission points, transmission nodes, Remote Radio Unit (RRU), Remote Radio Head (RRH), nodes in distributed antenna system (DAS), core network node (e.g. Mobile Switching Center (MSC), Mobility Management Entity (MME), etc.), Operations & Maintenance (O&M), Operations Support System (OSS), Self-Optimizing Network (SON), positioning node (e.g. Evolved-Serving Mobile Location Centre (E-SMLC)), Minimization of Drive Test (MDT), test equipment (physical node or software), etc.
In some embodiments, the non-limiting term user equipment (UE) or wireless device may be used and may refer to any type of wireless device communicating with a network node and/or with another UE in a cellular or mobile communication system. Examples of UE are target device, device to device (D2D) UE, machine type UE or UE capable of machine to machine (M2M) communication, PDA, PAD, Tablet, mobile terminals, smart phone, laptop embedded equipped (LEE), laptop mounted equipment (LME), USB dongles, UE category M1, UE category M2, ProSe UE, V2V UE, V2X UE, etc.
Additionally, terminologies such as base station/gNodeB and UE should be considered non-limiting and do in particular not imply a certain hierarchical relation between the two; in general, “gNodeB” could be considered as device 1 and “UE” could be considered as device 2 and these two devices communicate with each other over some radio channel. And in the following the transmitter or receiver could be either gNB, or UE.
A 3GPP device in Radio Resource Control (RRC) Idle or RRC Inactive state is required to perform a number of procedures including measurements for mobility purposes, paging monitoring, tracking area update, and search for a new Public Land Mobile Network (PLMN) to mention a few. These procedures will consume power in devices, and a general trend in 3GPP has been to allow for relaxation of these procedures to prolong device battery life. This trend has been especially pronounced for IoT devices supported by NB-IoT and LTE-M.
Certain problems exist, however. For example, a 3GPP device camping on a network expects continuous network availability. This stands in stark contrast to the moving Radio Access Network (RAN) associated with a LEO or MEO NTN not providing full earth-coverage. In this scenario, the satellite RAN will only be periodically available, which will cause the device to waste power by performing RRC idle and RRC inactive procedures during time periods when there is no RAN available.
In HAP and in GEO networks, solar powered satellite and HAP base stations may not be powered when the earth shadows the sun. Also, in this scenario the RAN may only be periodically available, i.e. during sun-hours, and a similar problem as just described for LEO and MEO NTN arises.
According to certain embodiments, methods and systems are provided for allowing wireless devices such as, UEs, to determine the availability of a RAN providing intermittent coverage, e.g. a moving RAN. In a particular embodiment, for example, the system and/or method relies on a timer which is associated with the periodicity by which a RAN with intermittent coverage is available for service.
According to certain embodiments, methods and systems are provided for adapting the monitoring, by the wireless device such as a UE, of downlink control channels in an NTN. In a particular embodiment, the UE may be informed of when the UE can expect a NTN to be available. During times of network unavailability, the UE is permitted to suspend RRC Idle and RRC inactive procedures to save power. During times of RAN availability, the UE should resume RRC Idle and RRC inactive procedures.
According to certain embodiments, a Radio Access Node (RAN), providing periodic coverage at a specific geographical location, configures UEs with a network availability timer. The timer is defined by a period, P, an offset, O, in the period, and has a length, L:
In a particular embodiment, the RAN is moving, e.g. a LEO or MEO NTN, for which the revisiting period, P, is dependent e.g. on the satellite ephemeris, offset, O, is determined based on mentioned geographical location relative to the orbit, and the length, L, is determined by the size of the area covered by the moving RAN. In a particular embodiment, the timer associated with the period, P, starts over every time a satellite passes over a reference location. In one example of polar orbits, the timer P is started, and stopped, as a satellite passes over the North pole (90° North Latitude).
In a particular embodiment, the offset, O, is determined by the UEs based on the UE location relative to the reference location. In a simple example of the mentioned polar orbit, using the North pole as reference location, a UE located at the North pole would configure the offset 0 to 0 seconds.
In a particular embodiment, the offset, O, is determined by the time with respect to a certain subframe or starting subframe of a radio frame or a hyper-frame or a newly introduced frame broadcasted by the network.
According to certain embodiments, the satellite constellation signals its ephemeris and an approximation of its moving coverage area to the UEs where satellite constellation may consist of a single satellite or multiple satellites. Based on these parameters, the UE determines when the network is not available.
The NTN coverage area corresponds to the aggregated footprint of all beams supported by the satellite constellation and may be defined by a center point and a geometric shape such as, for example, a circle, an ellipsoid, a hexagon, or a square. The center point may be defined at a position relative to nadir of a satellite in the satellite constellation and will move along with the satellite. In case the satellite constellation consists of multiple satellites, the footprint of each satellite may be defined by a center point and a geometric shape.
In a particular embodiment, the network signals to a UE, during a current period of coverage provided to the geographic location of the UE by a satellite, the next time any satellite of the same NTN visits the same geographic location, or in case of a HAP or GEO-based NTN, the next time the satellite is powered and provides services.
In a particular embodiment, a UE is only mandated to perform RRC Idle and RRC Inactive procedures when the network is indicated to be available such as when the network is providing service to a UE. During times of unavailability, the UE may suspend all or a set of the RRC Idle and RRC Inactive procedures.
In a particular embodiment, periodic activities, such as, for example, Discontinuous Reception (DRX) or Extended DRX (eDRX) periods are adjusted to match the satellite availability. This can be done in at least two ways:
Although the subject matter described herein may be implemented in any appropriate type of system using any suitable components, the embodiments disclosed herein are described in relation to a wireless network, such as the example wireless network illustrated in
The wireless network may comprise and/or interface with any type of communication, telecommunication, data, cellular, and/or radio network or other similar type of system. In some embodiments, the wireless network may be configured to operate according to specific standards or other types of predefined rules or procedures. Thus, particular embodiments of the wireless network may implement communication standards, such as Global System for Mobile Communications (GSM), Universal Mobile Telecommunications System (UMTS), Long Term Evolution (LTE), and/or other suitable 2G, 3G, 4G, or 5G standards; wireless local area network (WLAN) standards, such as the IEEE 802.11 standards; and/or any other appropriate wireless communication standard, such as the Worldwide Interoperability for Microwave Access (WiMax), Bluetooth, Z-Wave and/or ZigBee standards.
Network 106 may comprise one or more backhaul networks, core networks, IP networks, public switched telephone networks (PSTNs), packet data networks, optical networks, wide-area networks (WANs), local area networks (LANs), wireless local area networks (WLANs), wired networks, wireless networks, metropolitan area networks, and other networks to enable communication between devices.
Network node 160 and wireless device 110 comprise various components described in more detail below. These components work together in order to provide network node and/or wireless device functionality, such as providing wireless connections in a wireless network. In different embodiments, the wireless network may comprise any number of wired or wireless networks, network nodes, base stations, controllers, wireless devices, relay stations, and/or any other components or systems that may facilitate or participate in the communication of data and/or signals whether via wired or wireless connections.
In
Similarly, network node 160 may be composed of multiple physically separate components (e.g., a NodeB component and a RNC component, or a BTS component and a BSC component, etc.), which may each have their own respective components. In certain scenarios in which network node 160 comprises multiple separate components (e.g., BTS and BSC components), one or more of the separate components may be shared among several network nodes. For example, a single RNC may control multiple NodeB's. In such a scenario, each unique NodeB and RNC pair, may in some instances be considered a single separate network node. In some embodiments, network node 160 may be configured to support multiple radio access technologies (RATs). In such embodiments, some components may be duplicated (e.g., separate device readable medium 180 for the different RATs) and some components may be reused (e.g., the same antenna 162 may be shared by the RATs). Network node 160 may also include multiple sets of the various illustrated components for different wireless technologies integrated into network node 160, such as, for example, GSM, Wide Code Division Multiplexing Access (WCDMA), LTE, NR, WiFi, or Bluetooth wireless technologies. These wireless technologies may be integrated into the same or different chip or set of chips and other components within network node 160.
Processing circuitry 170 is configured to perform any determining, calculating, or similar operations (e.g., certain obtaining operations) described herein as being provided by a network node. These operations performed by processing circuitry 170 may include processing information obtained by processing circuitry 170 by, for example, converting the obtained information into other information, comparing the obtained information or converted information to information stored in the network node, and/or performing one or more operations based on the obtained information or converted information, and as a result of said processing making a determination.
Processing circuitry 170 may comprise a combination of one or more of a microprocessor, controller, microcontroller, central processing unit, digital signal processor, application-specific integrated circuit, field programmable gate array, or any other suitable computing device, resource, or combination of hardware, software and/or encoded logic operable to provide, either alone or in conjunction with other network node 160 components, such as device readable medium 180, network node 160 functionality. For example, processing circuitry 170 may execute instructions stored in device readable medium 180 or in memory within processing circuitry 170. Such functionality may include providing any of the various wireless features, functions, or benefits discussed herein. In some embodiments, processing circuitry 170 may include a system on a chip (SOC).
In some embodiments, processing circuitry 170 may include one or more of radio frequency (RF) transceiver circuitry 172 and baseband processing circuitry 174. In some embodiments, radio frequency (RF) transceiver circuitry 172 and baseband processing circuitry 174 may be on separate chips (or sets of chips), boards, or units, such as radio units and digital units. In alternative embodiments, part or all of RF transceiver circuitry 172 and baseband processing circuitry 174 may be on the same chip or set of chips, boards, or units.
In certain embodiments, some or all of the functionality described herein as being provided by a network node, base station, eNB or other such network device may be performed by processing circuitry 170 executing instructions stored on device readable medium 180 or memory within processing circuitry 170. In alternative embodiments, some or all of the functionality may be provided by processing circuitry 170 without executing instructions stored on a separate or discrete device readable medium, such as in a hard-wired manner. In any of those embodiments, whether executing instructions stored on a device readable storage medium or not, processing circuitry 170 can be configured to perform the described functionality. The benefits provided by such functionality are not limited to processing circuitry 170 alone or to other components of network node 160 but are enjoyed by network node 160 as a whole, and/or by end users and the wireless network generally.
Device readable medium 180 may comprise any form of volatile or non-volatile computer readable memory including, without limitation, persistent storage, solid-state memory, remotely mounted memory, magnetic media, optical media, random access memory (RAM), read-only memory (ROM), mass storage media (for example, a hard disk), removable storage media (for example, a flash drive, a Compact Disk (CD) or a Digital Video Disk (DVD)), and/or any other volatile or non-volatile, non-transitory device readable and/or computer-executable memory devices that store information, data, and/or instructions that may be used by processing circuitry 170. Device readable medium 180 may store any suitable instructions, data or information, including a computer program, software, an application including one or more of logic, rules, code, tables, etc. and/or other instructions capable of being executed by processing circuitry 170 and, utilized by network node 160. Device readable medium 180 may be used to store any calculations made by processing circuitry 170 and/or any data received via interface 190. In some embodiments, processing circuitry 170 and device readable medium 180 may be considered to be integrated.
Interface 190 is used in the wired or wireless communication of signalling and/or data between network node 160, network 106, and/or wireless devices 110. As illustrated, interface 190 comprises port(s)/terminal(s) 194 to send and receive data, for example to and from network 106 over a wired connection. Interface 190 also includes radio front end circuitry 192 that may be coupled to, or in certain embodiments a part of, antenna 162. Radio front end circuitry 192 comprises filters 198 and amplifiers 196. Radio front end circuitry 192 may be connected to antenna 162 and processing circuitry 170. Radio front end circuitry may be configured to condition signals communicated between antenna 162 and processing circuitry 170. Radio front end circuitry 192 may receive digital data that is to be sent out to other network nodes or wireless devices via a wireless connection. Radio front end circuitry 192 may convert the digital data into a radio signal having the appropriate channel and bandwidth parameters using a combination of filters 198 and/or amplifiers 196. The radio signal may then be transmitted via antenna 162. Similarly, when receiving data, antenna 162 may collect radio signals which are then converted into digital data by radio front end circuitry 192. The digital data may be passed to processing circuitry 170. In other embodiments, the interface may comprise different components and/or different combinations of components.
In certain alternative embodiments, network node 160 may not include separate radio front end circuitry 192, instead, processing circuitry 170 may comprise radio front end circuitry and may be connected to antenna 162 without separate radio front end circuitry 192. Similarly, in some embodiments, all or some of RF transceiver circuitry 172 may be considered a part of interface 190. In still other embodiments, interface 190 may include one or more ports or terminals 194, radio front end circuitry 192, and RF transceiver circuitry 172, as part of a radio unit (not shown), and interface 190 may communicate with baseband processing circuitry 174, which is part of a digital unit (not shown).
Antenna 162 may include one or more antennas, or antenna arrays, configured to send and/or receive wireless signals. Antenna 162 may be coupled to radio front end circuitry 190 and may be any type of antenna capable of transmitting and receiving data and/or signals wirelessly. In some embodiments, antenna 162 may comprise one or more omni-directional, sector or panel antennas operable to transmit/receive radio signals between, for example, 2 GHz and 66 GHz. An omni-directional antenna may be used to transmit/receive radio signals in any direction, a sector antenna may be used to transmit/receive radio signals from devices within a particular area, and a panel antenna may be a line of sight antenna used to transmit/receive radio signals in a relatively straight line. In some instances, the use of more than one antenna may be referred to as MIMO. In certain embodiments, antenna 162 may be separate from network node 160 and may be connectable to network node 160 through an interface or port.
Antenna 162, interface 190, and/or processing circuitry 170 may be configured to perform any receiving operations and/or certain obtaining operations described herein as being performed by a network node. Any information, data and/or signals may be received from a wireless device, another network node and/or any other network equipment. Similarly, antenna 162, interface 190, and/or processing circuitry 170 may be configured to perform any transmitting operations described herein as being performed by a network node. Any information, data and/or signals may be transmitted to a wireless device, another network node and/or any other network equipment.
Power circuitry 187 may comprise, or be coupled to, power management circuitry and is configured to supply the components of network node 160 with power for performing the functionality described herein. Power circuitry 187 may receive power from power source 186. Power source 186 and/or power circuitry 187 may be configured to provide power to the various components of network node 160 in a form suitable for the respective components (e.g., at a voltage and current level needed for each respective component). Power source 186 may either be included in, or external to, power circuitry 187 and/or network node 160. For example, network node 160 may be connectable to an external power source (e.g., an electricity outlet) via an input circuitry or interface such as an electrical cable, whereby the external power source supplies power to power circuitry 187. As a further example, power source 186 may comprise a source of power in the form of a battery or battery pack which is connected to, or integrated in, power circuitry 187. The battery may provide backup power should the external power source fail. Other types of power sources, such as photovoltaic devices, may also be used.
Alternative embodiments of network node 160 may include additional components beyond those shown in
As illustrated, wireless device 110 includes antenna 111, interface 114, processing circuitry 120, device readable medium 130, user interface equipment 132, auxiliary equipment 134, power source 136 and power circuitry 137. Wireless device 110 may include multiple sets of one or more of the illustrated components for different wireless technologies supported by wireless device 110, such as, for example, GSM, WCDMA, LTE, NR, WiFi, WiMAX, or Bluetooth wireless technologies, just to mention a few. These wireless technologies may be integrated into the same or different chips or set of chips as other components within wireless device 110.
Antenna 111 may include one or more antennas or antenna arrays, configured to send and/or receive wireless signals, and is connected to interface 114. In certain alternative embodiments, antenna 111 may be separate from wireless device 110 and be connectable to wireless device 110 through an interface or port. Antenna 111, interface 114, and/or processing circuitry 120 may be configured to perform any receiving or transmitting operations described herein as being performed by a wireless device. Any information, data and/or signals may be received from a network node and/or another wireless device. In some embodiments, radio front end circuitry and/or antenna 111 may be considered an interface.
As illustrated, interface 114 comprises radio front end circuitry 112 and antenna 111. Radio front end circuitry 112 comprise one or more filters 118 and amplifiers 116. Radio front end circuitry 114 is connected to antenna 111 and processing circuitry 120 and is configured to condition signals communicated between antenna 111 and processing circuitry 120. Radio front end circuitry 112 may be coupled to or a part of antenna 111. In some embodiments, wireless device 110 may not include separate radio front end circuitry 112; rather, processing circuitry 120 may comprise radio front end circuitry and may be connected to antenna 111. Similarly, in some embodiments, some or all of RF transceiver circuitry 122 may be considered a part of interface 114. Radio front end circuitry 112 may receive digital data that is to be sent out to other network nodes or wireless devices via a wireless connection. Radio front end circuitry 112 may convert the digital data into a radio signal having the appropriate channel and bandwidth parameters using a combination of filters 118 and/or amplifiers 116. The radio signal may then be transmitted via antenna 111. Similarly, when receiving data, antenna 111 may collect radio signals which are then converted into digital data by radio front end circuitry 112. The digital data may be passed to processing circuitry 120. In other embodiments, the interface may comprise different components and/or different combinations of components.
Processing circuitry 120 may comprise a combination of one or more of a microprocessor, controller, microcontroller, central processing unit, digital signal processor, application-specific integrated circuit, field programmable gate array, or any other suitable computing device, resource, or combination of hardware, software, and/or encoded logic operable to provide, either alone or in conjunction with other wireless device 110 components, such as device readable medium 130, wireless device 110 functionality. Such functionality may include providing any of the various wireless features or benefits discussed herein. For example, processing circuitry 120 may execute instructions stored in device readable medium 130 or in memory within processing circuitry 120 to provide the functionality disclosed herein.
As illustrated, processing circuitry 120 includes one or more of RF transceiver circuitry 122, baseband processing circuitry 124, and application processing circuitry 126. In other embodiments, the processing circuitry may comprise different components and/or different combinations of components. In certain embodiments processing circuitry 120 of wireless device 110 may comprise a SOC. In some embodiments, RF transceiver circuitry 122, baseband processing circuitry 124, and application processing circuitry 126 may be on separate chips or sets of chips. In alternative embodiments, part or all of baseband processing circuitry 124 and application processing circuitry 126 may be combined into one chip or set of chips, and RF transceiver circuitry 122 may be on a separate chip or set of chips. In still alternative embodiments, part or all of RF transceiver circuitry 122 and baseband processing circuitry 124 may be on the same chip or set of chips, and application processing circuitry 126 may be on a separate chip or set of chips. In yet other alternative embodiments, part or all of RF transceiver circuitry 122, baseband processing circuitry 124, and application processing circuitry 126 may be combined in the same chip or set of chips. In some embodiments, RF transceiver circuitry 122 may be a part of interface 114. RF transceiver circuitry 122 may condition RF signals for processing circuitry 120.
In certain embodiments, some or all of the functionality described herein as being performed by a wireless device may be provided by processing circuitry 120 executing instructions stored on device readable medium 130, which in certain embodiments may be a computer-readable storage medium. In alternative embodiments, some or all of the functionality may be provided by processing circuitry 120 without executing instructions stored on a separate or discrete device readable storage medium, such as in a hard-wired manner. In any of those particular embodiments, whether executing instructions stored on a device readable storage medium or not, processing circuitry 120 can be configured to perform the described functionality. The benefits provided by such functionality are not limited to processing circuitry 120 alone or to other components of wireless device 110, but are enjoyed by wireless device 110 as a whole, and/or by end users and the wireless network generally.
Processing circuitry 120 may be configured to perform any determining, calculating, or similar operations (e.g., certain obtaining operations) described herein as being performed by a wireless device. These operations, as performed by processing circuitry 120, may include processing information obtained by processing circuitry 120 by, for example, converting the obtained information into other information, comparing the obtained information or converted information to information stored by wireless device 110, and/or performing one or more operations based on the obtained information or converted information, and as a result of said processing making a determination.
Device readable medium 130 may be operable to store a computer program, software, an application including one or more of logic, rules, code, tables, etc. and/or other instructions capable of being executed by processing circuitry 120. Device readable medium 130 may include computer memory (e.g., Random Access Memory (RAM) or Read Only Memory (ROM)), mass storage media (e.g., a hard disk), removable storage media (e.g., a Compact Disk (CD) or a Digital Video Disk (DVD)), and/or any other volatile or non-volatile, non-transitory device readable and/or computer executable memory devices that store information, data, and/or instructions that may be used by processing circuitry 120. In some embodiments, processing circuitry 120 and device readable medium 130 may be considered to be integrated.
User interface equipment 132 may provide components that allow for a human user to interact with wireless device 110. Such interaction may be of many forms, such as visual, audial, tactile, etc. User interface equipment 132 may be operable to produce output to the user and to allow the user to provide input to wireless device 110. The type of interaction may vary depending on the type of user interface equipment 132 installed in wireless device 110. For example, if wireless device 110 is a smart phone, the interaction may be via a touch screen; if wireless device 110 is a smart meter, the interaction may be through a screen that provides usage (e.g., the number of gallons used) or a speaker that provides an audible alert (e.g., if smoke is detected). User interface equipment 132 may include input interfaces, devices and circuits, and output interfaces, devices and circuits. User interface equipment 132 is configured to allow input of information into wireless device 110 and is connected to processing circuitry 120 to allow processing circuitry 120 to process the input information. User interface equipment 132 may include, for example, a microphone, a proximity or other sensor, keys/buttons, a touch display, one or more cameras, a USB port, or other input circuitry. User interface equipment 132 is also configured to allow output of information from wireless device 110, and to allow processing circuitry 120 to output information from wireless device 110. User interface equipment 132 may include, for example, a speaker, a display, vibrating circuitry, a USB port, a headphone interface, or other output circuitry. Using one or more input and output interfaces, devices, and circuits, of user interface equipment 132, wireless device 110 may communicate with end users and/or the wireless network and allow them to benefit from the functionality described herein.
Auxiliary equipment 134 is operable to provide more specific functionality which may not be generally performed by wireless devices. This may comprise specialized sensors for doing measurements for various purposes, interfaces for additional types of communication such as wired communications etc. The inclusion and type of components of auxiliary equipment 134 may vary depending on the embodiment and/or scenario.
Power source 136 may, in some embodiments, be in the form of a battery or battery pack. Other types of power sources, such as an external power source (e.g., an electricity outlet), photovoltaic devices or power cells, may also be used. wireless device 110 may further comprise power circuitry 137 for delivering power from power source 136 to the various parts of wireless device 110 which need power from power source 136 to carry out any functionality described or indicated herein. Power circuitry 137 may in certain embodiments comprise power management circuitry. Power circuitry 137 may additionally or alternatively be operable to receive power from an external power source; in which case wireless device 110 may be connectable to the external power source (such as an electricity outlet) via input circuitry or an interface such as an electrical power cable. Power circuitry 137 may also in certain embodiments be operable to deliver power from an external power source to power source 136. This may be, for example, for the charging of power source 136. Power circuitry 137 may perform any formatting, converting, or other modification to the power from power source 136 to make the power suitable for the respective components of wireless device 110 to which power is supplied.
In
In
In the depicted embodiment, input/output interface 205 may be configured to provide a communication interface to an input device, output device, or input and output device. UE 200 may be configured to use an output device via input/output interface 205. An output device may use the same type of interface port as an input device. For example, a USB port may be used to provide input to and output from UE 200. The output device may be a speaker, a sound card, a video card, a display, a monitor, a printer, an actuator, an emitter, a smartcard, another output device, or any combination thereof. UE 200 may be configured to use an input device via input/output interface 205 to allow a user to capture information into UE 200. The input device may include a touch-sensitive or presence-sensitive display, a camera (e.g., a digital camera, a digital video camera, a web camera, etc.), a microphone, a sensor, a mouse, a trackball, a directional pad, a trackpad, a scroll wheel, a smartcard, and the like. The presence-sensitive display may include a capacitive or resistive touch sensor to sense input from a user. A sensor may be, for instance, an accelerometer, a gyroscope, a tilt sensor, a force sensor, a magnetometer, an optical sensor, a proximity sensor, another like sensor, or any combination thereof. For example, the input device may be an accelerometer, a magnetometer, a digital camera, a microphone, and an optical sensor.
In
RAM 217 may be configured to interface via bus 202 to processing circuitry 201 to provide storage or caching of data or computer instructions during the execution of software programs such as the operating system, application programs, and device drivers. ROM 219 may be configured to provide computer instructions or data to processing circuitry 201. For example, ROM 219 may be configured to store invariant low-level system code or data for basic system functions such as basic input and output (I/O), startup, or reception of keystrokes from a keyboard that are stored in a non-volatile memory. Storage medium 221 may be configured to include memory such as RAM, ROM, programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), magnetic disks, optical disks, floppy disks, hard disks, removable cartridges, or flash drives. In one example, storage medium 221 may be configured to include operating system 223, application program 225 such as a web browser application, a widget or gadget engine or another application, and data file 227. Storage medium 221 may store, for use by UE 200, any of a variety of various operating systems or combinations of operating systems.
Storage medium 221 may be configured to include a number of physical drive units, such as redundant array of independent disks (RAID), floppy disk drive, flash memory, USB flash drive, external hard disk drive, thumb drive, pen drive, key drive, high-density digital versatile disc (HD-DVD) optical disc drive, internal hard disk drive, Blu-Ray optical disc drive, holographic digital data storage (HDDS) optical disc drive, external mini-dual in-line memory module (DIMM), synchronous dynamic random access memory (SDRAM), external micro-DIMM SDRAM, smartcard memory such as a subscriber identity module or a removable user identity (SIM/RUIM) module, other memory, or any combination thereof. Storage medium 221 may allow UE 200 to access computer-executable instructions, application programs or the like, stored on transitory or non-transitory memory media, to off-load data, or to upload data. An article of manufacture, such as one utilizing a communication system may be tangibly embodied in storage medium 221, which may comprise a device readable medium.
In
In the illustrated embodiment, the communication functions of communication subsystem 231 may include data communication, voice communication, multimedia communication, short-range communications such as Bluetooth, near-field communication, location-based communication such as the use of the global positioning system (GPS) to determine a location, another like communication function, or any combination thereof. For example, communication subsystem 231 may include cellular communication, Wi-Fi communication, Bluetooth communication, and GPS communication. Network 243b may encompass wired and/or wireless networks such as a local-area network (LAN), a wide-area network (WAN), a computer network, a wireless network, a telecommunications network, another like network or any combination thereof. For example, network 243b may be a cellular network, a Wi-Fi network, and/or a near-field network. Power source 213 may be configured to provide alternating current (AC) or direct current (DC) power to components of UE 200.
The features, benefits and/or functions described herein may be implemented in one of the components of UE 200 or partitioned across multiple components of UE 200. Further, the features, benefits, and/or functions described herein may be implemented in any combination of hardware, software or firmware. In one example, communication subsystem 231 may be configured to include any of the components described herein. Further, processing circuitry 201 may be configured to communicate with any of such components over bus 202. In another example, any of such components may be represented by program instructions stored in memory that when executed by processing circuitry 201 perform the corresponding functions described herein. In another example, the functionality of any of such components may be partitioned between processing circuitry 201 and communication subsystem 231. In another example, the non-computationally intensive functions of any of such components may be implemented in software or firmware and the computationally intensive functions may be implemented in hardware.
In some embodiments, some or all of the functions described herein may be implemented as virtual components executed by one or more virtual machines implemented in one or more virtual environments 300 hosted by one or more of hardware nodes 330. Further, in embodiments in which the virtual node is not a radio access node or does not require radio connectivity (e.g., a core network node), then the network node may be entirely virtualized.
The functions may be implemented by one or more applications 320 (which may alternatively be called software instances, virtual appliances, network functions, virtual nodes, virtual network functions, etc.) operative to implement some of the features, functions, and/or benefits of some of the embodiments disclosed herein. Applications 320 are run in virtualization environment 300 which provides hardware 330 comprising processing circuitry 360 and memory 390. Memory 390 contains instructions 395 executable by processing circuitry 360 whereby application 320 is operative to provide one or more of the features, benefits, and/or functions disclosed herein.
Virtualization environment 300, comprises general-purpose or special-purpose network hardware devices 330 comprising a set of one or more processors or processing circuitry 360, which may be commercial off-the-shelf (COTS) processors, dedicated Application Specific Integrated Circuits (ASICs), or any other type of processing circuitry including digital or analog hardware components or special purpose processors. Each hardware device may comprise memory 390-1 which may be non-persistent memory for temporarily storing instructions 395 or software executed by processing circuitry 360. Each hardware device may comprise one or more network interface controllers (NICs) 370, also known as network interface cards, which include physical network interface 380. Each hardware device may also include non-transitory, persistent, machine-readable storage media 390-2 having stored therein software 395 and/or instructions executable by processing circuitry 360. Software 395 may include any type of software including software for instantiating one or more virtualization layers 350 (also referred to as hypervisors), software to execute virtual machines 340 as well as software allowing it to execute functions, features and/or benefits described in relation with some embodiments described herein.
Virtual machines 340, comprise virtual processing, virtual memory, virtual networking or interface and virtual storage, and may be run by a corresponding virtualization layer 350 or hypervisor. Different embodiments of the instance of virtual appliance 320 may be implemented on one or more of virtual machines 340, and the implementations may be made in different ways.
During operation, processing circuitry 360 executes software 395 to instantiate the hypervisor or virtualization layer 350, which may sometimes be referred to as a virtual machine monitor (VMM). Virtualization layer 350 may present a virtual operating platform that appears like networking hardware to virtual machine 340.
As shown in
Virtualization of the hardware is in some contexts referred to as network function virtualization (NFV). NFV may be used to consolidate many network equipment types onto industry standard high volume server hardware, physical switches, and physical storage, which can be located in data centers, and customer premise equipment.
In the context of NFV, virtual machine 340 may be a software implementation of a physical machine that runs programs as if they were executing on a physical, non-virtualized machine. Each of virtual machines 340, and that part of hardware 330 that executes that virtual machine, be it hardware dedicated to that virtual machine and/or hardware shared by that virtual machine with others of the virtual machines 340, forms a separate virtual network elements (VNE).
Still in the context of NFV, Virtual Network Function (VNF) is responsible for handling specific network functions that run in one or more virtual machines 340 on top of hardware networking infrastructure 330 and corresponds to application 320 in
In some embodiments, one or more radio units 3200 that each include one or more transmitters 3220 and one or more receivers 3210 may be coupled to one or more antennas 3225. Radio units 3200 may communicate directly with hardware nodes 330 via one or more appropriate network interfaces and may be used in combination with the virtual components to provide a virtual node with radio capabilities, such as a radio access node or a base station.
In some embodiments, some signaling can be affected with the use of control system 3230 which may alternatively be used for communication between the hardware nodes 330 and radio units 3200.
With reference to
Telecommunication network 410 is itself connected to host computer 430, which may be embodied in the hardware and/or software of a standalone server, a cloud-implemented server, a distributed server or as processing resources in a server farm. Host computer 430 may be under the ownership or control of a service provider or may be operated by the service provider or on behalf of the service provider. Connections 421 and 422 between telecommunication network 410 and host computer 430 may extend directly from core network 414 to host computer 430 or may go via an optional intermediate network 420. Intermediate network 420 may be one of, or a combination of more than one of, a public, private or hosted network; intermediate network 420, if any, may be a backbone network or the Internet; in particular, intermediate network 420 may comprise two or more sub-networks (not shown).
The communication system of
Example implementations, in accordance with an embodiment, of the UE, base station and host computer discussed in the preceding paragraphs will now be described with reference to
Communication system 500 further includes base station 520 provided in a telecommunication system and comprising hardware 525 enabling it to communicate with host computer 510 and with UE 530. Hardware 525 may include communication interface 526 for setting up and maintaining a wired or wireless connection with an interface of a different communication device of communication system 500, as well as radio interface 527 for setting up and maintaining at least wireless connection 570 with UE 530 located in a coverage area (not shown in
Communication system 500 further includes UE 530 already referred to. Its hardware 535 may include radio interface 537 configured to set up and maintain wireless connection 570 with a base station serving a coverage area in which UE 530 is currently located. Hardware 535 of UE 530 further includes processing circuitry 538, which may comprise one or more programmable processors, application-specific integrated circuits, field programmable gate arrays or combinations of these (not shown) adapted to execute instructions. UE 530 further comprises software 531, which is stored in or accessible by UE 530 and executable by processing circuitry 538. Software 531 includes client application 532. Client application 532 may be operable to provide a service to a human or non-human user via UE 530, with the support of host computer 510. In host computer 510, an executing host application 512 may communicate with the executing client application 532 via OTT connection 550 terminating at UE 530 and host computer 510. In providing the service to the user, client application 532 may receive request data from host application 512 and provide user data in response to the request data. OTT connection 550 may transfer both the request data and the user data. Client application 532 may interact with the user to generate the user data that it provides.
It is noted that host computer 510, base station 520 and UE 530 illustrated in
In
Wireless connection 570 between UE 530 and base station 520 is in accordance with the teachings of the embodiments described throughout this disclosure. One or more of the various embodiments improve the performance of OTT services provided to UE 530 using OTT connection 550, in which wireless connection 570 forms the last segment. More precisely, the teachings of these embodiments may improve the data rate, latency, and/or power consumption and thereby provide benefits such as reduced user waiting time, relaxed restriction on file size, better responsiveness, and/or extended battery lifetime.
A measurement procedure may be provided for the purpose of monitoring data rate, latency and other factors on which the one or more embodiments improve. There may further be an optional network functionality for reconfiguring OTT connection 550 between host computer 510 and UE 530, in response to variations in the measurement results. The measurement procedure and/or the network functionality for reconfiguring OTT connection 550 may be implemented in software 511 and hardware 515 of host computer 510 or in software 531 and hardware 535 of UE 530, or both. In embodiments, sensors (not shown) may be deployed in or in association with communication devices through which OTT connection 550 passes; the sensors may participate in the measurement procedure by supplying values of the monitored quantities exemplified above or supplying values of other physical quantities from which software 511, 531 may compute or estimate the monitored quantities. The reconfiguring of OTT connection 550 may include message format, retransmission settings, preferred routing etc.; the reconfiguring need not affect base station 520, and it may be unknown or imperceptible to base station 520. Such procedures and functionalities may be known and practiced in the art. In certain embodiments, measurements may involve proprietary UE signaling facilitating host computer 510's measurements of throughput, propagation times, latency and the like. The measurements may be implemented in that software 511 and 531 causes messages to be transmitted, in particular empty or ‘dummy’ messages, using OTT connection 550 while it monitors propagation times, errors etc.
In a particular embodiment, determining that the NTN is unavailable and/or will be unavailable to the wireless device 110 includes receiving information from the NTN and determining that the NTN is and/or will be unavailable to the wireless device 110 based on the information.
In a particular embodiment, the information explicitly indicates that the NTN is and/or will be unavailable.
In a particular embodiment, the information indicates that the wireless device 110 is not to perform an inactive mode or idle mode procedure during the period of time when the NTN is and/or will be unavailable.
In a particular embodiment, the information includes a satellite ephemeris and an approximation of a coverage area of the NTN. In a further particular embodiment, the coverage area may be approximated by a geometric shape such as, for example, a circle, hexagon, square, etc.
In a particular embodiment, the information is associated with a network availability timer, and it is determined that the NTN is unavailable and/or will be unavailable based on the network availability timer. In a further particular embodiment, the wireless device 110 uses the network availability timer to determine a periodic revisiting time of the NTN at a geographic location associated with the wireless device 110, and the periodic revisiting time indicates a periodicity during which the NTN periodically provides coverage at the geographical location. In a further particular embodiment, the wireless device 110 uses the network availability timer to determine a period of time when the NTN or a portion of the NTN is or will be powered on. In a further particular embodiment, the wireless device 110 determines an offset indicating an approximation of an amount of time from when the periodicity begins to when the NTN begins to provide service to the wireless device. In a particular embodiment, the wireless device 110 determines a length of time within the periodicity that service is provided by the NTN to the wireless device.
In a particular embodiment, the information indicates a next period of time when the NTN or a portion of the NTN will provide coverage at a geographical location associated with the wireless device 110.
In a particular embodiment, determining that the NTN is and/or will be unavailable to the wireless device 110 includes determining a period of time when the NTN or a portion of the NTN is or will be powered off.
In a particular embodiment, the NTN comprises a plurality of satellites, which may be referred to as a constellation of satellites. In a particular embodiment, each satellite may map to a base station. Together, the satellites/base stations form a RAN.
In a particular embodiment, the wireless device 110 receives information from a first satellite within the plurality of satellites, such as for example a Satellite A. The information may be associated with Satellite A, in a particular embodiment. Additionally or Alternatively, the information may be associated with a second satellite within the plurality of satellites, such as for example a Satellite B. Thus, the information may be received from one satellite but may pertain to another satellite, in a particular embodiment.
In a particular embodiment, the information is used to determine the period of time when the NTN is and/or will be unavailable and/or a next period of time when the NTN will be available, is powered on, and/or will provide coverage at a geographical location associated with the wireless device. As used herein, the period of time when a NTN is available is generally analogous to the period of time when the NTN is providing coverage. Stated differently, the availability or unavailability of the NTN may be related to whether the NTN is or is not providing coverage to the wireless device 110. Additionally, as used herein, a NTN that is powered on may or may not be deemed to be available and, thus, providing coverage to a wireless device 110. Stated differently, a NTN that is powered on may not necessarily provide coverage to a wireless device 110 simply because it is in a state of being powered on.
In a particular embodiment, the NTN is and/or will be unavailable when the NTN does not provide coverage at a geographical location associated with the wireless device 110.
In a particular embodiment, the inactive mode or idle mode procedure comprises measuring a signal strength of a camped on cell and/or at least one neighboring cell. In a further particular embodiment, not performing the inactive mode or idle mode procedure reduces power consumption of the wireless device 110 during the period of time when the NTN is and/or will be unavailable.
In a particular embodiment, the wireless device 110 determines that the period of time when the NTN is and/or will be unavailable has expired and resumes the inactive mode or idle mode procedures. In a further particular embodiment, resuming the inactive mode or idle mode procedures includes measuring the signal strength of a camped on cell and/or at least one neighboring cell. For example, the inactive mode or idle mode procedure may be resumed for the purpose of cell selection of reselection.
In a particular embodiment, the NTN includes a LEO satellite.
In a particular embodiment, the NTN includes a MEO satellite.
In a particular embodiment, the NTN includes a GEO satellite.
In a particular embodiment, the NTN includes a HAP. As used herein, a HAP may, for example, include a quasi-stationary platform such as an air ship or plane (as just some examples), which are stationed at the stratosphere.
In a particular embodiment, a payload of a satellite may comprise a gNB or another network node relaying a transmission from a gNB integrated in a gateway on ground.
In a particular embodiment, the wireless device 110 adjusts a DRX or eDRX period of the wireless device 110 to match a period of availability of the NTN. In a further particular embodiment, when of the DRX or eDRX period of the wireless device 110 to match the period of availability of the NTN, the wireless device 110 may make the DRX or eDRX period equal to a satellite orbit periodicity. In a particular embodiment, when adjusting the DRX or eDRX period of the wireless device 110 to match the period of availability of the NTN, the wireless device 110 may be associated to a paging occasion immediately following the NTN coming within a range of the wireless device 110.
Virtual Apparatus 1100 may comprise processing circuitry, which may include one or more microprocessor or microcontrollers, as well as other digital hardware, which may include digital signal processors (DSPs), special-purpose digital logic, and the like. The processing circuitry may be configured to execute program code stored in memory, which may include one or several types of memory such as read-only memory (ROM), random-access memory, cache memory, flash memory devices, optical storage devices, etc. Program code stored in memory includes program instructions for executing one or more telecommunications and/or data communications protocols as well as instructions for carrying out one or more of the techniques described herein, in several embodiments. In some implementations, the processing circuitry may be used to cause first determining module 1110, second determining module 1120, and any other suitable units of apparatus 1100 to perform corresponding functions according one or more embodiments of the present disclosure.
According to certain embodiments, first determining module 1110 may perform certain of the determining functions of the apparatus 1100. For example, first determining module 1110 may determine that a NTN is unavailable to the wireless device and/or will be unavailable to the wireless device.
According to certain embodiments, second determining module 1120 may perform certain other of the determining functions of the apparatus 1100. For example, second determining module 1120 may determine not to perform an inactive mode or idle mode procedure during a period of time when the NTN is unavailable to the wireless device.
The term unit may have conventional meaning in the field of electronics, electrical devices and/or electronic devices and may include, for example, electrical and/or electronic circuitry, devices, modules, processors, memories, logic solid state and/or discrete devices, computer programs or instructions for carrying out respective tasks, procedures, computations, outputs, and/or displaying functions, and so on, as such as those that are described herein.
In a particular embodiment, the information indicates that the wireless device 110 is not to perform an inactive mode or idle mode procedure during the period of time when the NTN is and/or will be unavailable. In a further particular embodiment, the inactive mode or idle mode procedure includes measuring a signal strength of a camped on cell and/or at least one neighboring cell. In a particular embodiment, not performing the inactive mode or idle mode procedure reduces power consumption of the wireless device 110 during the period of time when the NTN is and/or will be unavailable.
In a particular embodiment, the information includes a satellite ephemeris and an approximation of a coverage area of the NTN.
In a particular embodiment, the information is associated with a network availability timer.
In a particular embodiment, the information includes a periodic revisiting time of the NTN at a geographic location associated with the wireless device 110. The periodic revisiting time indicates a periodicity during which the NTN periodically provides coverage at the geographical location.
In a particular embodiment, the information indicates a period of time when the NTN or a portion of the NTN is or will be powered on.
In a particular embodiment, the information indicates an offset indicating an approximation of an amount of time from when the periodicity begins to when the NTN provides service to the wireless device 110.
In a particular embodiment, the information indicates a length of time within the periodicity that service is provided by the NTN to the wireless device 110.
In a particular embodiment, the information indicates a next period of time when the NTN or a portion of the NTN will provide coverage at a geographical location associated with the wireless device 110.
In a particular embodiment, the NTN comprises a plurality of satellites. In a particular embodiment, each satellite may map to a base station. Together, the satellites/base stations form a RAN.
In a further particular embodiment, the network node 160 is a first satellite within the plurality of satellites. Thus, the network node may be a Satellite A within the plurality or constellation of satellites. In a particular embodiment, the information may be associated with Satellite A. Additionally or Alternatively, the information may be associated with a second satellite within the plurality of satellites, such as for example a Satellite B. Thus, the information may be received from one satellite but may pertain to another satellite, in a particular embodiment.
In a particular embodiment, the NTN is and/or will be unavailable when the NTN does not provide coverage at a geographical location associated with the wireless device 110.
In a particular embodiment, the network node 160 determines that the period of time when the NTN is and/or will be unavailable has expired and transmits additional information to the wireless device 110. The additional information may indicate that the period of time when the NTN is and/or will be unavailable has expired. In a further particular embodiment, the additional information may indicate that the wireless device 110 is to resume an inactive mode or idle mode procedure. In still a further particular embodiment, resuming the inactive mode or idle mode procedure may include measuring the signal strength of a camped on cell and/or at least one neighboring cell. For example, the inactive mode or idle mode procedure may be resumed for the purpose of cell selection of reselection.
In a particular embodiment, the NTN includes a LEO satellite.
In a particular embodiment, the NTN includes a MEO satellite.
In a particular embodiment, the NTN includes a GEO satellite.
In a particular embodiment, the NTN includes a HAP.
In a particular embodiment, at least a portion of the network node 160 is comprised in a LEO satellite.
In a particular embodiment, at least a portion of the network node 160 is comprised in a MEO satellite.
In a particular embodiment, at least a portion of the network node 160 is comprised in a GEO satellite.
In a particular embodiment, at least a portion of the network node 160 is comprised in a HAP.
In a particular embodiment, the network node 160 comprises an eNode B or an gNode B. Additionally or alternatively, it may be said that a payload of a satellite may comprise a gNB or another network node relaying a transmission from a gNB integrated in a gateway on ground.
In a particular embodiment, the information includes a DRX or an eDRX period to match a period of availability of the NTN.
In a particular embodiment, the information includes a DRX or an eDRX period equal to a satellite orbit periodicity.
In a particular embodiment, the information indicates a paging occasion immediately following the NTN coming within a range of the wireless device 110.
Virtual Apparatus 1300 may comprise processing circuitry, which may include one or more microprocessor or microcontrollers, as well as other digital hardware, which may include digital signal processors (DSPs), special-purpose digital logic, and the like. The processing circuitry may be configured to execute program code stored in memory, which may include one or several types of memory such as read-only memory (ROM), random-access memory, cache memory, flash memory devices, optical storage devices, etc. Program code stored in memory includes program instructions for executing one or more telecommunications and/or data communications protocols as well as instructions for carrying out one or more of the techniques described herein, in several embodiments. In some implementations, the processing circuitry may be used to cause determining module 1310, transmitting module 1320, and any other suitable units of apparatus 1300 to perform corresponding functions according one or more embodiments of the present disclosure.
According to certain embodiments, determining module 1310 may perform certain of the determining functions of the apparatus 1300. For example, determining module 1310 may determine a period of time when the NTN is unavailable to a wireless device and/or will be unavailable to the wireless device.
According to certain embodiments, transmitting module 1320 may perform certain of the transmitting functions of the apparatus 1300. For example, transmitting module 1320 may transmit, to the wireless device, information indicating the period of time when the NTN is and/or will be unavailable to the wireless device.
The term unit may have conventional meaning in the field of electronics, electrical devices and/or electronic devices and may include, for example, electrical and/or electronic circuitry, devices, modules, processors, memories, logic solid state and/or discrete devices, computer programs or instructions for carrying out respective tasks, procedures, computations, outputs, and/or displaying functions, and so on, as such as those that are described herein.
In a particular embodiment, the information indicates that the wireless device 110 is not to perform an inactive mode or idle mode procedure during the period of time when the NTN is and/or will be unavailable. In a further particular embodiment, the inactive mode or idle mode procedure comprises measuring a signal strength of a camped on cell and/or at least one neighboring cell. In a further particular embodiment, not performing the inactive mode or idle mode procedure reduces power consumption of the wireless device 110 during the period of time when the NTN is and/or will be unavailable.
In a particular embodiment, the information comprises a satellite ephemeris and an approximation of a coverage area of the NTN.
In a particular embodiment, the information is associated with a network availability timer.
In a particular embodiment, the information comprises a periodic revisiting time of the NTN at a geographic location associated with the wireless device 110. Alternatively, the method may include configuring the wireless device 110 to determine, based on the information, a periodic revisiting time of the NTN at a geographic location associated with the wireless device 110. In a further particular embodiment, the periodic revisiting time indicates a periodicity during which the NTN periodically provides coverage at the geographical location.
In a particular embodiment, the information comprises a period of time when the NTN or a portion of the NTN is or will be powered on. Alternatively, the method may include configuring the wireless device 110 to determine, based on the information, a period of time when the NTN or a portion of the NTN is or will be powered on.
In a particular embodiment, the information comprises an offset indicating an approximation of an amount of time from when the periodicity begins to when the NTN provides service to the wireless device 110. Alternatively, the method may include configuring the wireless device 110 to determine, based on the information, an offset indicating an approximation of an amount of time from when the periodicity begins to when the NTN provides service to the wireless device 110.
In a particular embodiment, the information comprises a length of time within the periodicity that service is provided by the NTN to the wireless device 110. Alternatively, the method may include configuring the wireless device 110 to determine, based on the information, a length of time within the periodicity that service is provided by the NTN to the wireless device 110.
In a particular embodiment, the information indicates a next period of time when the NTN or a portion of the NTN will provide coverage at a geographical location associated with the wireless device 110. Alternatively, the method may include configuring the wireless device 110 to determine, based on the information, a next period of time when the NTN or a portion of the NTN will provide coverage at a geographical location associated with the wireless device 110.
In a particular embodiment, the NTN comprises a plurality of satellites. In a particular embodiment, each satellite may map to a base station. Together, the satellites/base stations form a RAN.
In a particular embodiment, the network node is a first satellite within the plurality of satellites. Thus, the network node 160 may be a Satellite A within the plurality or constellation of satellites. In a particular embodiment, the information may be associated with Satellite A. Additionally or Alternatively, the information may be associated with a second satellite within the plurality of satellites, such as for example a Satellite B. Thus, the information may be received from one satellite but may pertain to another satellite, in a particular embodiment.
In a particular embodiment, the NTN is and/or will be unavailable when the NTN does not provide coverage at a geographical location associated with the wireless device 110.
In a particular embodiment, the network node 160 determines that the period of time when the NTN is and/or will be unavailable has expired and transmits additional information to the wireless device 110. The additional information indicates that the period of time when the NTN is and/or will be unavailable has expired. In a further particular embodiment, the additional information indicates that the wireless device 110 is to resume an inactive mode or idle mode procedure. In a particular embodiment, resuming the inactive mode or idle mode procedure may include measuring the signal strength of a camped on cell and/or at least one neighboring cell. For example, the inactive mode or idle mode procedure may be resumed for the purpose of supporting mobility through cell selection and/or reselection.
In a particular embodiment, the NTN includes a LEO satellite.
In a particular embodiment, the NTN includes a MEO satellite.
In a particular embodiment, the NTN includes a GEO satellite.
In a particular embodiment, the NTN includes a HAP.
In a particular embodiment, at least a portion of the network node 160 is comprised in a LEO satellite.
In a particular embodiment, at least a portion of the network node 160 is comprised in a MEO satellite.
In a particular embodiment, at least a portion of the network node 160 is comprised in a GEO satellite.
In a particular embodiment, at least a portion of the network node 160 is comprised in a HAP.
In a particular embodiment, the network node 160 comprises an eNode B or an gNode B. Additionally or alternatively, it may be said that a payload of a satellite may comprise a gNB or another network node 160 relaying a transmission from a gNB integrated in a gateway on ground.
In a particular embodiment, the information comprises a DRX or eDRX period to match a period of availability of the NTN. Alternatively, the method may include configuring the wireless device 110 to determine, based on the information, a DRX or eDRX period to match a period of availability of the NTN.
In a particular embodiment, the information comprises a DRX or eDRX period equal to a satellite orbit periodicity. Alternatively, the method may include configuring the wireless device 110 to determine, based on the information, a DRX or eDRX period equal to a satellite orbit periodicity.
In a particular embodiment, the information indicates a paging occasion immediately following the NTN coming within a range of the wireless device 110. Alternatively, the method may include configuring the wireless device 110 to determine, based on the information, a paging occasion immediately following the NTN coming within a range of the wireless device 110.
Virtual Apparatus 1500 may comprise processing circuitry, which may include one or more microprocessor or microcontrollers, as well as other digital hardware, which may include digital signal processors (DSPs), special-purpose digital logic, and the like. The processing circuitry may be configured to execute program code stored in memory, which may include one or several types of memory such as read-only memory (ROM), random-access memory, cache memory, flash memory devices, optical storage devices, etc. Program code stored in memory includes program instructions for executing one or more telecommunications and/or data communications protocols as well as instructions for carrying out one or more of the techniques described herein, in several embodiments. In some implementations, the processing circuitry may be used to cause transmitting module S10 and any other suitable units of apparatus 1500 to perform corresponding functions according one or more embodiments of the present disclosure.
According to certain embodiments, transmitting module S10 may perform certain of the transmitting functions of the apparatus 1500. For example, transmitting module 510 may transmit, to a wireless device, information indicating that the NTN is unavailable to the wireless device and/or will be unavailable to the wireless device.
The term unit may have conventional meaning in the field of electronics, electrical devices and/or electronic devices and may include, for example, electrical and/or electronic circuitry, devices, modules, processors, memories, logic solid state and/or discrete devices, computer programs or instructions for carrying out respective tasks, procedures, computations, outputs, and/or displaying functions, and so on, as such as those that are described herein.
Example Embodiment 1. A wireless device comprising: processing circuitry configured to perform any of the steps described in relation to any of claims 1 to 23 and/or
Example Embodiment 2. A network node comprising: processing circuitry configured to perform any of the steps described in relation to any of claims 24-70 and/or
Example Embodiment 3. A wireless device, the wireless device comprising: an antenna configured to send and receive wireless signals; radio front-end circuitry connected to the antenna and to processing circuitry, and configured to condition signals communicated between the antenna and the processing circuitry; the processing circuitry being configured to perform any of the steps described in relation to any of claims 1 to 23 and/or
Example Embodiment 4. A communication system including a host computer comprising: processing circuitry configured to provide user data; and a communication interface configured to forward the user data to a cellular network for transmission to a wireless device, wherein the cellular network comprises a network node having a radio interface and processing circuitry, the network node's processing circuitry configured to perform any of the steps described in relation to any of claims 24-70 and/or
Example Embodiment 5. The communication system of the pervious embodiment further including the network node.
Example Embodiment 6. The communication system of the previous 2 embodiments, further including the wireless device, wherein the wireless device is configured to communicate with the network node.
Example Embodiment 7. The communication system of the previous 3 embodiments, wherein: the processing circuitry of the host computer is configured to execute a host application, thereby providing the user data; and the wireless device comprises processing circuitry configured to execute a client application associated with the host application.
Example Embodiment 8. A method implemented in a communication system including a host computer, a network node and a wireless device, the method comprising: at the host computer, providing user data; and at the host computer, initiating a transmission carrying the user data to the wireless device via a cellular network comprising the network node, wherein the network node performs any of the steps described in relation to any of claims 24-70 and/or
Example Embodiment 9. The method of the previous embodiment, further comprising, at the network node, transmitting the user data.
Example Embodiment 10. The method of the previous 2 embodiments, wherein the user data is provided at the host computer by executing a host application, the method further comprising, at the wireless device, executing a client application associated with the host application.
Example Embodiment 11. A wireless device configured to communicate with a network node, the wireless device comprising a radio interface and processing circuitry configured to performs the of the previous 3 embodiments.
Example Embodiment 12. A communication system including a host computer comprising: processing circuitry configured to provide user data; and a communication interface configured to forward user data to a cellular network for transmission to a wireless device, wherein the wireless device comprises a radio interface and processing circuitry, the wireless device's components configured to perform any of the steps described in relation to any of claims 1 to 23 and/or
Example Embodiment 13. The communication system of the previous embodiment, wherein the cellular network further includes a network node configured to communicate with the wireless device.
Example Embodiment 14. The communication system of the previous 2 embodiments, wherein: the processing circuitry of the host computer is configured to execute a host application, thereby providing the user data; and the wireless device's processing circuitry is configured to execute a client application associated with the host application.
Example Embodiment 15. A method implemented in a communication system including a host computer, a network node and a wireless device, the method comprising: at the host computer, providing user data; and at the host computer, initiating a transmission carrying the user data to the wireless device via a cellular network comprising the network node, wherein the wireless device performs any of the steps described in relation to any of claims 1 to 23 and/or
Example Embodiment 16. The method of the previous embodiment, further comprising at the wireless device, receiving the user data from the network node.
Example Embodiment 17. A communication system including a host computer comprising: communication interface configured to receive user data originating from a transmission from a wireless device to a network node, wherein the wireless device comprises a radio interface and processing circuitry, the wireless device's processing circuitry configured to perform any of the steps described in relation to any of claims 1 to 23 and/or
Example Embodiment 18. The communication system of the previous embodiment, further including the wireless device.
Example Embodiment 19. The communication system of the previous 2 embodiments, further including the network node, wherein the network node comprises a radio interface configured to communicate with the wireless device and a communication interface configured to forward to the host computer the user data carried by a transmission from the wireless device to the network node.
Example Embodiment 20. The communication system of the previous 3 embodiments, wherein: the processing circuitry of the host computer is configured to execute a host application; and the wireless device's processing circuitry is configured to execute a client application associated with the host application, thereby providing the user data.
Example Embodiment 21. The communication system of the previous 4 embodiments, wherein: the processing circuitry of the host computer is configured to execute a host application, thereby providing request data; and the wireless device's processing circuitry is configured to execute a client application associated with the host application, thereby providing the user data in response to the request data.
Example Embodiment 22. A method implemented in a communication system including a host computer, a network node and a wireless device, the method comprising: at the host computer, receiving user data transmitted to the network node from the wireless device, wherein the wireless device performs any of the steps described in relation to any of claims 1 to 23 and/or
Example Embodiment 23. The method of the previous embodiment, further comprising, at the wireless device, providing the user data to the network node.
Example Embodiment 24. The method of the previous 2 embodiments, further comprising: at the wireless device, executing a client application, thereby providing the user data to be transmitted; and at the host computer, executing a host application associated with the client application.
Example Embodiment 25. The method of the previous 3 embodiments, further comprising: at the wireless device, executing a client application; and at the wireless device, receiving input data to the client application, the input data being provided at the host computer by executing a host application associated with the client application, wherein the user data to be transmitted is provided by the client application in response to the input data.
Example Embodiment 26. A communication system including a host computer comprising a communication interface configured to receive user data originating from a transmission from a wireless device to a network node, wherein the network node comprises a radio interface and processing circuitry, the network node's processing circuitry configured to perform any of the steps described in relation to any of claims 24-70 and/or
Example Embodiment 27. The communication system of the previous embodiment further including the network node.
Example Embodiment 28. The communication system of the previous 2 embodiments, further including the wireless device, wherein the wireless device is configured to communicate with the network node.
Example Embodiment 29. The communication system of the previous 3 embodiments, wherein: the processing circuitry of the host computer is configured to execute a host application; the wireless device is configured to execute a client application associated with the host application, thereby providing the user data to be received by the host computer.
Example Embodiment 30. A method implemented in a communication system including a host computer, a network node and a wireless device, the method comprising: at the host computer, receiving, from the base station, user data originating from a transmission which the network node has received from the wireless device, wherein the wireless device performs any of the steps described in relation to any of claims 1 to 23 and/or
Example Embodiment 31. The method of the previous embodiment, further comprising at the network node receiving the user data from the wireless device.
Example Embodiment 32. The method of the previous 2 embodiments, further comprising at the network node, initiating a transmission of the received user data to the host computer.
Example Embodiment 33. The method of any of the previous embodiments, wherein the network node comprises a base station.
Example Embodiment 34. The method of any of the previous embodiments, wherein the wireless device comprises a user equipment (UE).
Example Embodiment 35. A computer program comprising instructions which when executed on a computer perform any of the steps described in relation to any of claims 1 to 23 and/or
Example Embodiment 36. A computer program product comprising a computer program, the computer program comprising instructions which when executed on a computer perform any of the steps described in relation to any of claims 1 to 23 and/or
Example Embodiment 37. A non-transitory computer readable medium storing instructions which when executed by a computer perform any of the steps described in relation to any of claims 1 to 23 and/or
Example Embodiment 38. A computer program comprising instructions which when executed on a computer perform any of the steps described in relation to any of claims 24-70 and/or
Example Embodiment 39. A computer program product comprising computer program, the computer program comprising instructions which when executed on a computer perform any of the steps described in relation to any of claims 24-70 and/or
Example Embodiment 40. A non-transitory computer readable medium storing instructions which when executed by a computer perform any of the steps described in relation to any of claims 24-70 and/or
Modifications, additions, or omissions may be made to the systems and apparatuses described herein without departing from the scope of the disclosure. The components of the systems and apparatuses may be integrated or separated. Moreover, the operations of the systems and apparatuses may be performed by more, fewer, or other components. Additionally, operations of the systems and apparatuses may be performed using any suitable logic comprising software, hardware, and/or other logic. As used in this document, “each” refers to each member of a set or each member of a subset of a set.
Modifications, additions, or omissions may be made to the methods described herein without departing from the scope of the disclosure. The methods may include more, fewer, or other steps. Additionally, steps may be performed in any suitable order.
Although this disclosure has been described in terms of certain embodiments, alterations and permutations of the embodiments will be apparent to those skilled in the art. Accordingly, the above description of the embodiments does not constrain this disclosure. Other changes, substitutions, and alterations are possible without departing from the spirit and scope of this disclosure.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/SE2021/050087 | 2/7/2021 | WO |
| Number | Date | Country | |
|---|---|---|---|
| 62972106 | Feb 2020 | US |
