WO2023126008A2 - 卫星通信方法和通信装置 - Google Patents

卫星通信方法和通信装置 Download PDF

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Publication number
WO2023126008A2
WO2023126008A2 PCT/CN2023/070014 CN2023070014W WO2023126008A2 WO 2023126008 A2 WO2023126008 A2 WO 2023126008A2 CN 2023070014 W CN2023070014 W CN 2023070014W WO 2023126008 A2 WO2023126008 A2 WO 2023126008A2
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WIPO (PCT)
Prior art keywords
information
satellite
terminal device
current
time information
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PCT/CN2023/070014
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English (en)
French (fr)
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WO2023126008A3 (zh
Inventor
易雄书
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华为技术有限公司
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Publication of WO2023126008A2 publication Critical patent/WO2023126008A2/zh
Publication of WO2023126008A3 publication Critical patent/WO2023126008A3/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H04B7/18519—Operations control, administration or maintenance

Definitions

  • the present application relates to the communication field, and more particularly, to a satellite communication method and device.
  • Satellite communication is a kind of non-terrestrial network (NTN) communication. Compared with terrestrial network communication, satellite communication has the characteristics of wide coverage and is not easy to be damaged by natural disasters or external forces, and can be used for ground networks that cannot be covered.
  • the area provides communication services.
  • the satellite communication system the satellite uses high-gain beams to cover the ground, and one beam covers one area on the ground, and the satellite can transmit one or more beams at the same time. Due to the high-speed movement of the satellite, even if the covered terminals on the ground or in the air are stationary or moving at a low speed, all users will be doing high-speed relative motion due to the high-speed movement of the satellite, resulting in frequent updates of TAU (Tracking Area Update).
  • TAU Track Area Update
  • the UE periodically reports the Global Navigation Satellite System (GNSS) information to the core network when it is connected and connected.
  • GNSS Global Navigation Satellite System
  • the core network equipment maintains and updates the ephemeris and user GNSS information of all terminals.
  • the core network equipment Based on the ephemeris and GNSS information of the user, one or more satellite base stations serving the GNSS position of the terminal are calculated at a certain time, and these base stations are paged. Because the UE triggers TAU only when the location change exceeds a certain threshold, the problem of frequent TAU can be avoided.
  • the terminal location information is unavailable, such as rain, occlusion, navigation system control, etc. causing the GNSS positioning system to fail, this method cannot be performed.
  • the present application provides an interference detection method and a communication device in wireless communication, which can reduce communication interference and improve communication reliability.
  • a satellite communication method the method may be executed by a terminal device or a module (such as a chip) configured in (or used for) the terminal device.
  • the method includes: the terminal device receives the following information sent from the core network device: a plurality of TA (tracking area, tracking area) set information, each of the TA set information includes a plurality of TA information; and each of the TA set information Corresponding time information; satellite set information corresponding to each TA set and its corresponding time information, the satellite set information including identification information of multiple satellites; and service duration information of each satellite;
  • TA tracking area, tracking area
  • the terminal device determines the serving satellite of the terminal device according to the current TA information and current time information of the terminal device;
  • the terminal device sends a report to the core network device Send the current TA information.
  • the UE can obtain the regular change of TAList_ti over time, and initiate a TAU update if it does not conform to the change rule, even if the terminal location information is not available, It can effectively avoid frequent TAU update of stationary or low-speed users, and reduce system signaling overhead.
  • the method further includes:
  • the terminal device sends the optimal SSB or BM CSI-RS resource id.
  • the UE TAU update and report TAI can be reported with the optimal SSB or BM CSI-RS (beam measurement channel state information reference signal, channel state information reference signal for beam measurement) resource id, so that when the core network paging next time, the core network can calculate the satellite where the UE is located at the paging time and the corresponding beam of the service based on the satellite trajectory, and page the The UE can preferentially page the satellite and the beam to reduce scanning overhead.
  • the terminal device determines the TA set it belongs to according to the current TA information, determines the time information corresponding to the TA set according to the current time information, and obtains said satellite assembly information;
  • the terminal device determines the serving satellite and the TA list to which the current TA information belongs and the time information to which the current time information belongs The corresponding satellite collection information does not match.
  • a communication method is provided, which can be executed by a core network or a module (such as a chip) configured on (or used for) the core network.
  • the method includes: the core network device sends the following information to the terminal device:
  • a plurality of TA set information includes a plurality of TA information
  • Time information corresponding to each of the TA lists also referred to as TA sets
  • the satellite set information corresponding to each TA set and its corresponding time information, the satellite set information includes identification information of multiple satellites;
  • the TA information sent by the terminal device according to the above information is received.
  • the TAList_ti maintained by the core network is collected and sent to the UE, so that the UE can obtain the regular change of TAList_ti over time, and initiate a TAU update if the change rule does not conform to, even if the terminal location information is not available, it can Effectively avoid frequent TAU updates of static or low-speed users, and reduce system signaling overhead.
  • the method further includes: receiving an optimal SSB or BM CSI-RS resource id from the terminal device.
  • the core network device pages the terminal device according to the optimal SSB or BM CSI-RS resource id.
  • the UE TAU can update and report the TAI with an additional report of the optimal SSB or BM CSI-RS resource id, so that when the core network paging next time, the core network
  • the satellite where the UE is located and the beam corresponding to the service at the paging time can be calculated based on the satellite trajectory.
  • the satellite and the beam can be paged preferentially to reduce the scanning cost.
  • a communication device in a third aspect, may include a one-to-one corresponding module for performing the method/operation/step/action described in the first aspect.
  • the module may be a hardware circuit, or However, software may also be realized by combining hardware circuits with software.
  • the device includes: a transceiver unit, configured to receive the following information from the core network device:
  • the satellite set information corresponding to each TA set and its corresponding time information, the satellite set information includes identification information of multiple satellites;
  • a processing unit configured to determine the serving satellite of the terminal device according to the current TA information and current time information of the terminal device
  • the transceiver unit is further configured to: when the satellite set information corresponding to the TA set to which the current TA information belongs and the time information to which the current time information belongs do not match the serving satellite, the The terminal device sends the current TA information to the core network device.
  • the transceiver unit is configured to send the optimal SSB or BM CSI-RS resource id.
  • the transceiver unit is configured to determine the TA set to which the terminal device belongs according to the current TA information, and determine the TA set corresponding to the TA set according to the current time information. Time information, obtaining the satellite collection information;
  • the satellite set information does not include the identification information of the serving satellite, determine the satellite corresponding to the serving satellite, the TA list to which the current TA information belongs, and the time information to which the current time information belongs Collection information does not match.
  • a communication device in a fourth aspect, may include a one-to-one corresponding module for performing the method/operation/step/action described in the second aspect.
  • the module may be a hardware circuit, or a However, software may also be realized by combining hardware circuits with software.
  • the device includes: a transceiver unit, configured to send the following information to the terminal device:
  • the TA sets include multiple TA information
  • the satellite set information includes identification information of a plurality of satellites
  • the transceiver unit is further configured to receive TA information sent by the terminal device according to the received information.
  • the transceiving unit is further configured to receive an optimal SSB or BM CSI-RS resource identifier from the terminal device.
  • a processing unit is included, and the processing unit is configured to page the terminal device according to the optimal SSB or BM CSI-RS resource identifier.
  • a communication system in a fifth aspect, includes the communication device described in the third aspect or any one of the third aspect, and the communication device described in the fourth aspect or any one of the fourth aspect.
  • a communication device including a processor.
  • the processor may implement the first aspect and the method in any possible implementation manner of the first aspect.
  • the communication device further includes a memory, and the processor is coupled to the memory, and can be used to execute instructions in the memory, so as to implement the above first aspect and the method in any possible implementation manner of the first aspect.
  • the communication device further includes a communication interface, and the processor is coupled to the communication interface.
  • the communication interface may be a transceiver, a pin, a circuit, a bus, a module or other types of communication interfaces, without limitation.
  • the communications apparatus is a first access network device.
  • the communication interface may be a transceiver, or an input/output interface.
  • the communication device is a chip configured in the first access network device.
  • the communication interface may be an input/output interface
  • the processor may be a logic circuit.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • a communication device including a processor.
  • the processor may implement the second aspect and the method in any possible implementation manner of the second aspect.
  • the communication device further includes a memory, and the processor is coupled to the memory, and can be used to execute instructions in the memory, so as to implement the above second aspect and the method in any possible implementation manner of the second aspect.
  • the communication device further includes a communication interface, and the processor is coupled to the communication interface.
  • the communication interface may be a transceiver, a pin, a circuit, a bus, a module or other types of communication interfaces, without limitation.
  • the communications apparatus is a second access network device.
  • the communication interface may be a transceiver, or an input/output interface.
  • the communication device is a chip configured in the second access network device.
  • the communication interface may be an input/output interface
  • the processor may be a logic circuit.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • a processor including: an input circuit, an output circuit, and a processing circuit.
  • the processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the method in the first aspect and any possible implementation manner of the first aspect, or causes the processor Execute the second aspect and the method in any possible implementation manner of the second aspect.
  • the above-mentioned processor can be one or more chips
  • the input circuit can be an input pin
  • the output circuit can be an output pin
  • the processing circuit can be a transistor, a gate circuit, a flip-flop and various logic circuits, etc. .
  • the input signal received by the input circuit may be received and input by, for example but not limited to, the receiver
  • the output signal of the output circuit may be, for example but not limited to, output to the transmitter and transmitted by the transmitter
  • the circuit may be the same circuit, which is used as an input circuit and an output circuit respectively at different times.
  • the embodiment of the present application does not limit the specific implementation manners of the processor and various circuits.
  • a computer program product includes: a computer program (also referred to as code, or an instruction), when the computer program is executed, the computer executes the first aspect and the first aspect.
  • the method in any possible implementation manner, or causing the computer to execute the second aspect and the method in any possible implementation manner of the second aspect.
  • a computer-readable storage medium stores a computer program (also referred to as code, or instruction) when it is run on a computer, so that the computer executes the above-mentioned first aspect and The method in any possible implementation manner of the first aspect, or causing a computer to execute the second aspect and the method in any possible implementation manner of the second aspect.
  • a computer program also referred to as code, or instruction
  • FIG. 1 is a schematic diagram of a communication system applicable to an embodiment of the present application
  • FIG. 2 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of TA collection satellite information provided by the embodiment of the present application.
  • Fig. 4 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • Fig. 6 is a schematic structural diagram of a core network device provided by an embodiment of the present application.
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD time division duplex
  • 5th generation, 5G new radio
  • future communication systems such as the sixth generation mobile communication system, etc.
  • This application is not limited to this.
  • FIG. 1 is taken as an example to describe in detail the communication system applicable to the embodiment of the present application.
  • FIG. 1 is a schematic structural diagram of a communication system to which the communication method provided in the embodiment of the present application is applicable.
  • the communication system includes at least one network device 110 (110a as shown in FIG. 1, or 110a and 110b) and at least one terminal device 120 (120a or 120b as shown in FIG. 1).
  • the above-mentioned network device 110 is a device located on the network side of the above-mentioned communication system and having a wireless transceiver function or a chip or a chip system that can be provided in the device.
  • the network equipment includes, but is not limited to: satellites, aircraft, or unmanned aerial systems (unmanned aerial system, UAS).
  • the network device may be a device that is set on a satellite, an aircraft or a UAS and has a wireless transceiver function, or a chip or a chip system that can be set on the device.
  • the network device may be an evolved Node B (evolved Node B, eNB), a radio network controller (radio network controller, RNC), a Node B (Node B, NB), a base station controller (base station controller, BSC) , base transceiver station (base transceiver station, BTS), baseband unit (baseband unit, BBU), wireless relay node, wireless backhaul node, transmission point (transmission and reception point, TRP or transmission point, TP), etc.
  • a gNB in a new radio (new radio, NR) system or, a transmission point (TRP or TP), one or a group (including multiple antenna panels) antenna panels of a base station in a 5G system, or, It may also be a network node constituting a gNB or a transmission point, such as a baseband unit (BBU), or a distributed unit (distributed unit, DU).
  • RNC radio network controller
  • Node B Node B
  • BSC base station
  • the above-mentioned terminal device 120 is a terminal that accesses the above-mentioned communication system and has a wireless transceiver function, or a chip or a chip system that can be provided in the terminal.
  • the terminal equipment 120 may also be referred to as a satellite television receiver, subscriber device, access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, subscriber terminal, terminal, wireless communication device, User Agent or User Device.
  • the terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (virtual reality, VR) terminal device, an augmented reality (augmented reality, AR) terminal Equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation safety ( Wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, vehicle-mounted terminals, RSUs with terminal functions, flight equipment with terminal functions, etc.
  • a virtual reality (virtual reality, VR) terminal device an augmented reality (augmented reality, AR) terminal Equipment
  • wireless terminals in industrial control wireless terminals in self driving
  • wireless terminals in remote medical wireless terminals in smart grid
  • transportation safety Wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, vehicle-mounted terminals, RSUs with terminal functions, flight equipment with terminal functions, etc.
  • the terminal device of the present application can also be a vehicle-mounted module, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip, or a vehicle-mounted unit built into the vehicle as one or more components or units.
  • the on-board component, on-board chip, or on-board unit can implement the communication method provided in this application.
  • the communication system shown in FIG. 1 may further include a connection device 130 such as a gateway (gateway), wherein the network device 110 may communicate with the connection device 130 through a wireless link, and the connection device 130 may communicate with the core network 140 .
  • a connection device 130 such as a gateway (gateway)
  • the network device 110 may communicate with the connection device 130 through a wireless link
  • the connection device 130 may communicate with the core network 140 .
  • 110a can communicate with the terminal device 120 through a service link (service link), and 110a can communicate with the connection device 130 through a feeder link (feeder link).
  • service link service link
  • feeder link feeder link
  • 110a can communicate with the terminal device 110 through a service link
  • 110a can communicate with 110b through an inter satellite link (ISL)
  • 110b can communicate with 110b through a feeder
  • the electrical link communicates with the connection device 130 .
  • 110a may be used for relaying signals
  • 110b may be used for encoding and decoding operations on signals, and so on.
  • 110b encodes the first signal to be sent to the terminal 120, and then sends the encoded first signal to 110a
  • 110a sends the encoded first signal to the terminal device 120.
  • 110a may receive the second signal from the terminal device 120, and send the second signal to 110b, and after receiving the second signal, 110b decodes the second signal.
  • FIG. 1 is a simplified schematic diagram illustrated for ease of understanding, and the communication system may further include other network devices and/or other terminal devices, which are not shown in FIG. 1 .
  • FIG. 2 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • the communication method shown in FIG. 2 can be applied to the communication between the communication systems shown in FIG. 1 .
  • the methods shown in Figure 2 include:
  • the core network device maintains multiple TA set satellite information for each terminal device, including multiple TA set information, each of the TA set information includes multiple TA information; and time information corresponding to each of the TA sets; Each TA set information and its corresponding time information correspond to satellite set information, and the satellite set information includes identification information of a plurality of satellites.
  • the first TA set satellite information among the plurality of TA set satellite information of the terminal device A is shown in FIG. 3
  • the first TA set information may also be called TAList information
  • the TA List information indicates the satellite set information corresponding to the TA list at different times ti
  • the satellite set information includes identification information of satellites that can serve the UE at time ti.
  • ti is time information
  • different ti represents different time
  • i 0,1,...N-1
  • N represents the number of time slices of TAList.
  • the number of time slices is the number of time skews obtained by averaging the time required for a satellite to go around the earth.
  • the first TA set information includes TA list information, a plurality of ti information, and satellite set information corresponding to the time indicated by each ti information, and the satellite set information includes satellites that can serve the UE at time ti identification information.
  • the multiple TA sets also include other TA list information, such as second TA set information, which is similar to the first TA set information, and the second TA set information indicates the satellites corresponding to the second TA list at different times Set information
  • the second TA list indication information includes second TA list information, a plurality of ti information, and satellite set information corresponding to the time indicated by each ti information
  • the satellite set information includes information that can be Identification information of the satellite served by the UE.
  • the identification information of the satellite may be the identification of the satellite ij, where i indicates the orbit where the satellite is located, and j indicates the serial number of the satellite on the orbit.
  • the terminal device sends TAI to the core network device
  • the terminal device obtains TAC (tracking area code, tracking area code) information, and the UE calculates the TAI based on the TAC.
  • TAC tracking area code, tracking area code
  • the terminal device may obtain the TAC information by receiving the RMSI information, where the RMSI information includes the TAC information.
  • the terminal device can obtain the RMSI information in the access process/handover process/paging information modified based on the system message.
  • the terminal device can obtain TAC information according to , and MCC information and MNC information to obtain TAI information.
  • the terminal device sends the TAI information to the core network device, and the TAI information can be sent to the core network device through the base station device.
  • the core network sends all TA aggregated satellite information and satellite service duration information to the terminal device:
  • the shown core network device sends TALIST indication information for the terminal device and service duration information of the satellite identified by the satellite identification information in the TA list information to the terminal device.
  • the service duration is the time from when the satellite starts to serve each time to when the satellite ends due to the movement due to the movement of the satellite.
  • the service time information may be indication information indicating the service time of each satellite; if the service time of the satellites is not equal, the service time of each satellite needs to be indicated.
  • the terminal device determines whether the current serving satellite matches the satellite in the satellite set information corresponding to the TAI and the TA set to which the current time belongs according to its current TAI and current time. If not, the terminal device initiates a TAU update;
  • the terminal device can determine the corresponding TA set information according to the current TAI and the current time. From the multiple TA set information obtained in step S203, it can be known that the corresponding TA set information can be determined through the current TAI information.
  • the TA set information The TA list includes the TAI; and the ti information corresponding to the TA set information is determined according to the current time, and the ti information corresponds to the current time, then the satellite set information corresponding to the ti information in the TA information can be determined, and the satellite set information includes Identification information of multiple satellites.
  • the current serving satellite of the terminal device belongs to the satellite collection, it is considered that the current serving satellite matches the satellite corresponding to the satellite identification in the satellite collection information corresponding to the TAList_ti to which the current time belongs, and does not initiate The TAU is updated to save system signaling overhead.
  • the current serving satellite of the UE does not belong to the satellite set, the current serving satellite does not match the satellite in the satellite set information corresponding to the TAList_ti at this moment, and the UE initiates a TAU update.
  • the TAU update can be performed according to the update process in the prior art.
  • TAlist_t0, TAlist_t1 and TAlist_t2 respectively represent the satellites (SATs) that the TAlist (TA set) serves for at time t0, t1 and t2.
  • SATs satellites
  • Multiple TAIs are included in the TAlist.
  • the current TAI of the terminal device belongs to the TAI list corresponding to the TA set information, when the satellite currently serving the terminal is satellite 10, the fastest 2M minutes and the slowest 1M minutes will switch to satellite 12, and terminals that meet this expectation do not need Initiate TAU, where M is the service duration of each satellite; when the predicted satellite is not located in the satellite corresponding to TAList_t0 after the switch, if it is predicted to switch to the satellite corresponding to TAList_t1, TAI needs to be reported, and the core network updates the service corresponding to the terminal device The satellite is the satellite corresponding to TAList_t1, and according to the service time of the satellite, it is expected to serve the satellite corresponding to the subsequent TAList_ti of the terminal device to perform paging;
  • the next serving satellite will not be in the satellite set corresponding to the TAlist t0, corresponding to this
  • the mismatch in this case can be called a critical mismatch.
  • the terminal device needs to report TAI to the core network device, and the core network device According to the maintained TAlist t0 information, if it is confirmed as a critical mismatch, the core network will page the currently serving satellite on the edge and the satellite that will serve the terminal device in the next TAlist list when paging is currently required.
  • the terminal when reporting the TAI, the terminal sends critical mismatch indication information, where the indication information is used to indicate that the current mismatch is a critical mismatch.
  • the terminal device when the terminal device updates and reports TAI, it can also report the optimal SSB (synchronization signal and PBCH block , synchronization signal & broadcast channel block) or BM CSI-RS resource identifier, when the core network paging next time, the core network can calculate the satellite where the UE is located at the paging time and the beam of the corresponding service based on the satellite trajectory, and page the UE The satellite and the beam can be paged preferentially, reducing scanning overhead. After paging fails, perform paging according to the expected TAList_ti or TAList_ti+adjacent TAList_ti.
  • SSB synchronization signal and PBCH block , synchronization signal & broadcast channel block
  • BM CSI-RS resource identifier when the core network paging next time, the core network can calculate the satellite where the UE is located at the paging time and the beam of the corresponding service based on the satellite trajectory, and page the UE The satellite and the beam can be
  • the UE by accepting the TAList_ti set maintained by the core network, the UE can obtain the regular change of TAList_ti over time, and initiate a TAU update if it does not conform to the change rule, even if the terminal location information If it is not available, it can also effectively avoid frequent TAU updates of stationary or low-speed users, reducing the signaling overhead of the system.
  • each network element may include a hardware structure and/or a software module, and implement the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether one of the above-mentioned functions is executed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.
  • Fig. 4 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • the communication device 400 may include a transceiver unit 420 .
  • the communication device 400 may correspond to the terminal device in the above method embodiments, or a chip configured in (or used in) the terminal device, or other devices capable of implementing the method of the terminal device, modules, circuits or units etc.
  • the communication apparatus 400 may correspond to the terminal device in the method 200 according to the embodiment of the present application, and the communication apparatus 400 may include a unit for executing the method performed by the terminal device in the method 200 in FIG. 2 . Moreover, each unit in the communication device 400 and the above-mentioned other operations and/or functions are respectively intended to implement a corresponding flow of the method 200 in FIG. 2 .
  • the communication device 400 may further include a processing unit 410, and the processing unit 410 may be configured to process instructions or data to implement corresponding operations.
  • the transceiver unit 420 in the communication device 400 may be an input/output interface or circuit of the chip, and the processing in the communication device 400 Unit 410 may be a processor in a chip.
  • the communication device 400 may further include a storage unit 430, which may be used to store instructions or data, and the processing unit 410 may execute the instructions or data stored in the storage unit, so that the communication device realizes corresponding operations .
  • a storage unit 430 which may be used to store instructions or data
  • the processing unit 410 may execute the instructions or data stored in the storage unit, so that the communication device realizes corresponding operations .
  • the transceiver unit 420 in the communication device 400 can be implemented through a communication interface (such as a transceiver or an input/output interface), for example, it can correspond to the transceiver 510 in the terminal device 500 shown in FIG. 5 .
  • the processing unit 410 in the communication apparatus 400 may be implemented by at least one processor, for example, may correspond to the processor 520 in the terminal device 500 shown in FIG. 5 .
  • the processing unit 410 in the communication device 400 may also be implemented by at least one logic circuit.
  • the storage unit 430 in the communication device 400 may correspond to the memory in the terminal device 500 shown in FIG. 5 .
  • the communication device 400 may correspond to the core network device in the above method embodiment, for example, or the communication device 400 may be a chip configured (or used) in a core network device, Or other devices, modules, circuits or units capable of implementing the method of the core network device.
  • the communication device 400 may correspond to the core network device in the method 200 according to the embodiment of the present application, and the communication device 400 may include a core network device for executing the method 200 in FIG. 2 .
  • the communication device 400 may further include a processing unit 410, and the processing unit 410 may be configured to process instructions or data to implement corresponding operations.
  • the transceiver unit 420 in the communication device 400 may be an input/output interface or circuit of the chip, and the communication device 400
  • the processing unit 410 may be a processor in a chip.
  • the communication device 400 may further include a storage unit 430, which may be used to store instructions or data, and the processing unit 410 may execute the instructions or data stored in the storage unit, so that the communication device realizes corresponding operations .
  • a storage unit 430 which may be used to store instructions or data
  • the processing unit 410 may execute the instructions or data stored in the storage unit, so that the communication device realizes corresponding operations .
  • the communication device 400 is configured in a core network device, and the transceiver unit 420 in the communication device 400 can be realized through a communication interface (such as a transceiver or an input/output interface), for example, it can correspond to the core shown in FIG. 6
  • the processing unit 410 in the communication device 400 may be implemented by at least one processor, for example, may correspond to the processor 601 in the core network device (communication device 600) shown in FIG. 6 , the processing unit 410 in the communication device 400 Can be realized by at least one logic circuit.
  • FIG. 6 is a schematic structural diagram of a core network device 600 provided by an embodiment of the present application.
  • the core network device 600 can be applied to the system shown in FIG. 1 to execute the functions of the terminal equipment in the above method embodiments.
  • the core network device 600 includes a processor 601 and a transceiver 603 .
  • the terminal device 600 further includes a memory 602 .
  • the processor 620, the transceiver 610 and the memory 602 may communicate with each other through an internal connection path, and transmit control and/or data signals.
  • the memory is used to store computer programs, and the processor 601 is used to execute the computer programs in the memory to control the transceiver 603 to send and receive signals.
  • the processor 601 is one or more central processing units (central processing unit, CPU), may also be a specific integrated circuit (application specific integrated circuit, ASIC), or is configured to implement one or more integrated Circuitry, for example: one or more microprocessors (digital signal processor, DSP), or, one or more field programmable gate arrays (field programmable gate array, FPGA).
  • CPU central processing unit
  • ASIC application specific integrated circuit
  • DSP digital signal processor
  • FPGA field programmable gate array
  • the processor 601 may execute various functions of the core network device by running or executing software programs stored in the memory 602 and calling data stored in the memory 602 .
  • the processor 601 may include one or more CPUs, such as CPU0 and CPU1 shown in FIG. 6 .
  • the memory 602 may also be integrated in the processor 620 , or be independent of the processor 620 .
  • the processor 601 may correspond to the processing unit in FIG. 4 .
  • the above-mentioned transceiver 603 may correspond to the transceiver unit in FIG. 5 .
  • the transceiver 603 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). Among them, the receiver is used to receive signals, and the transmitter is used to transmit signals.
  • the communication device 600 shown in FIG. 6 can implement the process involving the core network device in the method embodiment shown in FIG. 2 .
  • the operations and/or functions of the various modules in the communication device 600 (core network device) are respectively for realizing the corresponding processes in the foregoing method embodiments.
  • the above-mentioned processor 601 can be used to execute the actions described in the previous method embodiments implemented by the core network device, and the transceiver 603 can be used to perform the sending or receiving from the terminal device to the network device described in the previous method embodiments. Actions. For details, please refer to the description in the foregoing method embodiments, and details are not repeated here.
  • the above processing device may be one or more chips.
  • the processing device may be a field programmable gate array (field programmable gate array, FPGA), an application specific integrated circuit (ASIC), or a system chip (system on chip, SoC). It can be a central processor unit (CPU), a network processor (network processor, NP), a digital signal processing circuit (digital signal processor, DSP), or a microcontroller (micro controller unit) , MCU), can also be a programmable controller (programmable logic device, PLD) or other integrated chips.
  • CPU central processor unit
  • NP network processor
  • DSP digital signal processor
  • microcontroller micro controller unit
  • PLD programmable logic device
  • the present application also provides a computer program product, the computer program product comprising: computer program code, when the computer program code is executed by one or more processors, the The device executes the method in the embodiment shown in FIG. 2 .
  • the technical solutions provided by the embodiments of the present application may be fully or partially implemented by software, hardware, firmware or any combination thereof.
  • software When implemented using software, it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part.
  • the computer may be a general computer, a dedicated computer, a computer network, a network device, a terminal device, a core network device, a machine learning device or other programmable devices.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Transmission to another website site, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrated with one or more available media.
  • the available medium may be a magnetic medium (for example, a floppy disk, a hard disk, or a magnetic tape), an optical medium (for example, a digital video disc (digital video disc, DVD)), or a semiconductor medium.
  • the present application also provides a computer-readable storage medium, the computer-readable storage medium stores program code, and when the program code is run by one or more processors, the processing includes the The apparatus of the controller executes the method in the embodiment shown in FIG. 2 .
  • the present application further provides a system, which includes at least one aforementioned first access network device and at least one aforementioned second access device.
  • the system may further include the aforementioned one or more terminal devices.
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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Abstract

本申请提供了一种卫星通信方法和通信装置。该通信方法包括，终端装置接收来自核心网装置的以下信息: 多个 TA 集合信息，每个所述 TA 集合信息包括多个 TA 信息; 和每个所述 TA 集合信息对应的时间信息: 所述每个 TA 集合和其对应的所述时间信息共同对应的卫星集合信息，所述卫星集合信息包括多个卫星的标识信息; 以及每个所述卫星的服务时长信息; 所述终端装置根据所述终端装置的当前 TA 信息和当前时间信息，确定所述终端装置的服务卫星；当所述当前 TA 信息所属的所述TA集合和所述当前时间信息所属的所述时间信息所共同对应的卫星集合信息，和所述服务卫星不匹配，所述终端装置向所述核心网装置发送所述当前 TA 信息。

Description

卫星通信方法和通信装置
本申请要求于2021年12月31日提交中国专利局、申请号为202111655353.1，发明名称为“卫星通信方法和通信装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，并且更具体地，涉及一种卫星通信的方法和装置。
背景技术
卫星通信是非地面网络(non-terrestrial network，NTN)通信的一种，卫星通信相对于地面网络通信具有覆盖广、不容易受到自然灾害或外力破坏的特点，且可以用于为地面网络不能覆盖的区域提供通信服务。在卫星通信系统中，卫星利用高增益波束覆盖地面，一个波束覆盖地面一个区域，卫星可以同时发送一个或多个波束。因为卫星高速移动，地面或空中所被覆盖的终端即使静止或低速移动，也会因为卫星高速移动导致所有用户都在做高速的相对运动，导致TAU(Tracking Area Update)更新频繁。
UE在接入时和连接态下周期性向核心网上报全球导航卫星系统(Global Navigation Satellite System，GNSS)信息，核心网设备维护和更新所有终端的星历和用户GNSS信息，寻呼时核心网设备基于星历和用户GNSS信息，通过计算某时刻服务该终端GNSS位置的1个或多个卫星基站，并对这些基站进行寻呼。因为UE只有当位置变化超过一定门限才触发TAU，这样就可以避免频繁TAU的问题。但是当终端位置信息不可用时，如下雨，遮挡，导航系统管制等导致GNSS定位系统失效，则该方法无法进行。
发明内容
本申请提供了一种无线通信中的干扰检测方法和通信装置，能够减小通信干扰，提高通信可靠性。
第一方面，一种卫星通信方法，该方法可以终端设备或配置于(或用于)终端设备的模块(如芯片)执行。
该方法包括：终端装置接收来自核心网装置发送的以下信息：多个TA(tracking area，跟踪区)集合信息，每个所述TA集合信息包括多个TA信息；和每个所述TA集合信息对应的时间信息；所述每个TA集合和其对应的所述时间信息共同对应的卫星集合信息，所述卫星集合信息包括多个卫星的标识信息；以及每个所述卫星的服务时长信息；
所述终端装置根据所述终端装置的当前TA信息和当前时间信息，确定所述终端装置的服务卫星；
当所述当前TA信息所属的所述TA集合和所述当前时间信息所属的所述时间信息所共同对应的卫星集合信息，和所述服务卫星不匹配，所述终端装置向所述核心网装置发送所述当前TA信息。
根据上述方案，UE通过接受来自核心网所维护的TAList_ti集合，使得UE能够获得TAList_ti随时间的规律性变化，在不符合该变化规律的情况下再发起TAU更新，即使 终端位置信息不可用，也能够有效避免静止或低速用户的频繁TAU更新，减少了系统的信令开销。
结合第一方面，在第一方面的某些实现方式中，该方法还包括：
所述终端装置发送最优SSB或BM CSI-RS资源id。
卫星一个波束的覆盖范围较大，为避免寻呼时进行所有波束扫描，UE TAU更新上报TAI(tracking area identity,跟踪区标识)时可以附带上报最优SSB或BM CSI-RS(beam measurement channel state information reference signal，波束测量的信道状态信息参考信号)资源id，使得下一次核心网寻呼时，核心网可以基于卫星运行轨迹计算寻呼时刻UE所处的卫星和对应服务的波束，寻呼该UE可以优先寻呼该卫星和该波束，降低扫描开销。
结合第一方面，在第一方面的某些实施方式中，所述终端装置根据所述当前TA信息，确定所属TA集合，根据所述当前时间信息，确定所述TA集合对应的时间信息，获得所述卫星集合信息；
当所述卫星集合信息中不包括所述服务卫星的标识信息，所述终端装置确定所述服务卫星与所述当前TA信息所属的所述TA list和所述当前时间信息所属的所述时间信息所对应的卫星集合信息不匹配。
第二方面，提供了一种通信方法，该方法可以由核心网或配置于(或用于)核心网的模块(如芯片)执行。
该方法包括：核心网装置向所述终端装置发送以下信息：
多个TA集合信息，所述TA集合信息包括多个TA信息；
每个所述TA list(也可以称为TA集合)对应的时间信息；
所述每个TA集合和其对应的所述时间信息共同对应的卫星集合信息，所述卫星集合信息包括多个卫星的标识信息；
以及每个所述卫星的服务时长信息；
接收所述终端装置根据上述信息发送的TA信息。
根据上述方案，核心网维护的TAList_ti集合并向UE发送，使得UE能够获得TAList_ti随时间的规律性变化，在不符合该变化规律的情况下再发起TAU更新，即使终端位置信息不可用，也能够有效避免静止或低速用户的频繁TAU更新，减少了系统的信令开销。
结合第二方面，在第二方面的某些实现方式中，该方法还包括：接收来自所述终端装置的最优SSB或BM CSI-RS资源id。
结合第一方面，在第一方面的某些实施方式中，所述核心网装置根据所述最优SSB或BM CSI-RS资源id寻呼所述终端装置。
卫星一个波束的覆盖范围较大，为避免寻呼时进行所有波束扫描，UE TAU更新上报TAI时可以附带上报最优SSB或BM CSI-RS资源id，使得下一次核心网寻呼时，核心网可以基于卫星运行轨迹计算寻呼时刻UE所处的卫星和对应服务的波束，寻呼该UE可以优先寻呼该卫星和该波束，降低扫描开销。
第三方面，提供了一种通信装置，一种设计中，该装置可以包括执行第一方面中所描述的方法/操作/步骤/动作所一一对应的模块，该模块可以是硬件电路，也可是软件，也可以是硬件电路结合软件实现。一种设计中，该装置包括：收发单元，用于接收来自核心网装置的以下信息：
多个TA集合，每个所述TA集合包括多个TA信息；
和每个所述TA集合对应的时间信息；
所述每个TA集合和其对应的所述时间信息共同对应的卫星集合信息，所述卫星集合信息包括多个卫星的标识信息；
以及每个所述卫星的服务时长信息；
处理单元，用于根据所述终端装置的当前TA信息和当前时间信息，确定所述终端装置的服务卫星；
所述收发单元，还用于当所述当前TA信息所属的所述TA集合和所述当前时间信息所属的所述时间信息所共同对应的卫星集合信息，和所述服务卫星不匹配，所述终端装置向所述核心网装置发送所述当前TA信息。
结合第三方面，在第三方面的某些实现方式中，该收发单元用于发送最优SSB或BM CSI-RS资源id。
结合第三方面，在第三方面的某些实现方式中，该收发单元用于根据所述终端装置的当前TA信息，确定所属TA集合，根据所述当前时间信息，确定所述TA集合对应的时间信息，获得所述卫星集合信息；
当所述卫星集合信息中不包括所述服务卫星的标识信息，确定所述服务卫星与所述当前TA信息所属的所述TA list和所述当前时间信息所属的所述时间信息所对应的卫星集合信息不匹配。
第四方面，提供了一种通信装置，一种设计中，该装置可以包括执行第二方面中所描述的方法/操作/步骤/动作所一一对应的模块，该模块可以是硬件电路，也可是软件，也可以是硬件电路结合软件实现。一种设计中，该装置包括：收发单元，用于向所述终端装置发送以下信息：
多个TA集合，所述TA集合包括多个TA信息；
每个所述TA list对应的时间信息；
所述每个TA list和每个所述TA list所对应的所述时间信息共同对应的卫星集合信息，所述卫星集合信息包括多个卫星的标识信息；
以及每个所述卫星的服务时长信息；
该收发单元还用于接收所述终端装置根据接收到的所述信息发送的TA信息。
结合第四方面，在第四方面的某些实现方式中，该收发单元还用于接收来自所述终端装置的最优SSB或BM CSI-RS资源标识。
结合第四方面，在第四方面的某些实现方式中，包括处理单元，处理单元用于根据所述最优SSB或BM CSI-RS资源标识寻呼所述终端装置。
第五方面，提供了一种通信系统，该通信系统包括如第三方面或第三方面中任一项描述的通信装置，以及如第四方面或第四方面中任一项描述的通信装置。
第六方面，提供了一种通信装置，包括处理器。该处理器可以实现上述第一方面以及第一方面中任一种可能实现方式中的方法。可选地，该通信装置还包括存储器，该处理器与该存储器耦合，可用于执行存储器中的指令，以实现上述第一方面以及第一方面中任一种可能实现方式中的方法。可选地，该通信装置还包括通信接口，处理器与通信接口耦合。本申请实施例中，通信接口可以是收发器、管脚、电路、总线、模块或其它类型的通信接口，不予限制。
在一种实现方式中，该通信装置为第一接入网设备。当该通信装置为第一接入网设备 时，该通信接口可以是收发器，或，输入/输出接口。
在另一种实现方式中，该通信装置为配置于第一接入网设备中的芯片。当该通信装置为配置于第一接入网设备中的芯片时，该通信接口可以是输入/输出接口，该处理器可以是逻辑电路。
可选地，该收发器可以为收发电路。可选地，该输入/输出接口可以为输入/输出电路。
第七方面，提供了一种通信装置，包括处理器。该处理器可以实现上述第二方面以及第二方面中任一种可能实现方式中的方法。可选地，该通信装置还包括存储器，该处理器与该存储器耦合，可用于执行存储器中的指令，以实现上述第二方面以及第二方面中任一种可能实现方式中的方法。可选地，该通信装置还包括通信接口，处理器与通信接口耦合。本申请实施例中，通信接口可以是收发器、管脚、电路、总线、模块或其它类型的通信接口，不予限制。
在一种实现方式中，该通信装置为第二接入网设备。当该通信装置为第二接入网设备时，该通信接口可以是收发器，或，输入/输出接口。
在另一种实现方式中，该通信装置为配置于第二接入网设备中的芯片。当该通信装置为配置于第二接入网设备中的芯片时，该通信接口可以是输入/输出接口，该处理器可以是逻辑电路。
可选地，该收发器可以为收发电路。可选地，该输入/输出接口可以为输入/输出电路。
第八方面，提供了一种处理器，包括：输入电路、输出电路和处理电路。该处理电路用于通过该输入电路接收信号，并通过该输出电路发射信号，使得该处理器执行第一方面以及第一方面中任一种可能的实现方式中的方法，或者，使得该处理器执行第二方面以及第二方面中任一种可能实现方式中的方法。
在具体实现过程中，上述处理器可以为一个或多个芯片，输入电路可以为输入管脚，输出电路可以为输出管脚，处理电路可以为晶体管、门电路、触发器和各种逻辑电路等。输入电路所接收的输入的信号可以是由例如但不限于接收器接收并输入的，输出电路所输出的信号可以是例如但不限于输出给发射器并由发射器发射的，且输入电路和输出电路可以是同一电路，该电路在不同的时刻分别用作输入电路和输出电路。本申请实施例对处理器及各种电路的具体实现方式不做限定。
第九方面，提供了一种计算机程序产品，该计算机程序产品包括：计算机程序(也可以称为代码，或指令)，当该计算机程序被运行时，使得计算机执行第一方面以及第一方面中任一种可能的实现方式中的方法，或者，使得计算机执行第二方面以及第二方面中任一种可能的实现方式中的方法。
第十方面，提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序(也可以称为代码，或指令)当其在计算机上运行时，使得计算机执行上述第一方面以及第一方面中任一种可能的实现方式中的方法，或者，使得计算机执行第二方面以及第二方面中任一种可能的实现方式中的方法。
附图说明
图1是适用于本申请实施例的通信系统的一个示意图；
图2是本申请实施例提供的通信方法的示意性流程图；
图3是本申请实施例提供的TA集合卫星信息的示意图；
图4是本申请实施例提供的通信装置的示意性框图；
图5是本申请实施例提供的终端装置的示意性结构图；
图6是本申请实施例提供的核心网装置的示意性结构图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请实施例的说明书、权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
本申请实施例的技术方案可以应用于各种通信系统，例如：长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、第五代(5th generation，5G)系统或新无线(new radio，NR)以及未来的通信系统，如第六代移动通信系统等，也包括涉及卫星的以上通信系统。本申请对此不作限定。
图1中示出的通信系统为例详细说明适用于本申请实施例的通信系统。示例性地，图1为本申请实施例提供的通信方法所适用的一种通信系统的架构示意图。如图1所示，该通信系统包括至少一个网络设备110(如图1中所示的110a，或者110a和110b)和至少一个终端设备120(如图1中所示的120a或120b)。
其中，上述网络设备110为位于上述通信系统的网络侧，且具有无线收发功能的设备或可设置于该设备的芯片或芯片系统。该网络设备包括但不限于：卫星、飞行器或无人空中系统(unmanned aerial system，UAS)。或者，该网络设备可以是设置在卫星、飞行器或UAS上，且具有无线收发功能的设备或可设置于该设备的芯片或芯片系统。或者，该网络设备可以是演进型节点B(evolved Node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、基带单元(baseband unit，BBU)，无线中继节点、无线回传节点、传输点(transmission and reception point，TRP或者transmission point，TP)等，还可以为5G，如，新空口(new radio，NR)系统中的gNB，或，传输点(TRP或TP)，5G系统中的基站的一个或一组(包括多个天线面板)天线面板，或者，还可以为构成gNB或传输点的网络节点，如基带单元(BBU)，或，分布式单元(distributed unit，DU)等。
上述终端设备120为接入上述通信系统，且具有无线收发功能的终端或可设置于该终端的芯片或芯片系统。该终端设备120也可以称为卫星电视接收器、用户装置、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。本申请的实施例中的终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端、车载终端、具有终端功能的RSU、具有终端功能的飞行设备等。本申请的终端设备还可以是作为一个或多个部件或者单元而内置于车辆的车载模块、车载模组、车载部件、车载芯片或者车载单元，车辆通过内置的所述车载模块、车载模组、车载部件、车载芯片或者车载单元可以实施本申请提供的通信方法。
图1所示的通信系统中，还可以包括连接设备130，如网关(gateway)，其中，网络设备110可以通过无线链路与连接设备130通信，连接设备130可以与核心网140通信。
若网络设备110为图1中所示的110a，则110a可以通过服务链路(service link)与终端设备120通信，且110a可以与通过馈电链路(feeder link)与连接设备130通信。网络设备
若网络设备110包括图2中所示的110a和110b，则110a可以通过服务链路与终端设备110通信，110a可以通过卫星间链路(inter satellite link，ISL)与110b通信，110b可以通过馈电链路与连接设备130通信。在此情况下，110a可以用于中继信号，110b可以用于对信号进行编解码操作等。例如，110b将需要发送给终端120的第一信号编码后，向110a发送编码后的第一信号，110a向终端设备120发送编码后的第一信号。或者，110a可以接收来自终端设备120的第二信号，并向110b发送第二信号，110b接收到第二信号后，再解码第二信号。
需要说明的是，本申请实施例提供的通信方法，可以适用于图2所示的网络设备与终端设备之间，具体实现可以参考下述方法实施例，此处不再赘述。
应当指出的是，本申请实施例中的方案还可以应用于其他通信系统中，相应的名称也可以用其他通信系统中的对应功能的名称进行替代。
应理解，图1为便于理解而示例的简化示意图，该通信系统中还可以包括其他网络设备，和/或，其他终端设备，图1中未予以画出。
下面将结合图2-图6对本申请实施例提供的通信方法进行具体阐述。
图2为本申请实施例提供的通信方法的流程示意图。图2所示的通信方法可以适用于图1所示的通信系统之间的通信。图2所示的方法包括：
S201，核心网装置为每个终端装置维护多个TA集合卫星信息，包括多个TA集合信息，每个所述TA集合信息包括多个TA信息；和每个所述TA集合对应的时间信息；所述每个TA集合信息和其对应的所述时间信息共同对应的卫星集合信息，所述卫星集合信息包括多个卫星的标识信息。
其中，作为一种可选的实现方式，所述终端装置A的多个TA集合卫星信息中的第一TA集合卫星信息如图3所示，该第一TA集合信息，也可以称为TAList信息，TA List 信息指示了该TA list在不同时间ti中所对应的卫星集合信息，该卫星集合信息包括在ti时刻能够为所述UE服务的卫星的标识信息。其中，ti为时间信息，不同的ti代表不同的时间，i＝0,1,….N-1，N表示TAList的时间分片数。该时间分片数为对卫星绕地球一圈所需要的时间进行平均切割后的时间偏度数。如卫星绕地球一圈为90分钟，可拆分为9个时间分片，每个时间分片为10分钟，即时间分片数为9。所述第一TA集合信息包括TA list信息，多个ti信息，和与每个ti信息所指示的时间所对应的卫星集合信息，该卫星集合信息包括在ti时刻能够为所述UE服务的卫星的标识信息。
此外，该多个TA集合还包括其他TA list信息，如第二TA集合信息，与第一TA集合信息类似，所述第二TA集合信息指示了第二TA list在不同时间中所对应的卫星集合信息，所述第二TA list指示信息包括第二TA list信息，多个ti信息，和与每个ti信息所指示的时间所对应的卫星集合信息，该卫星集合信息包括在ti时刻能够为所述UE服务的卫星的标识信息。
其中，卫星的标识信息可以为卫星ij标识，其中i表示卫星所在的轨道，j表示轨道上的卫星编号。
S202，终端装置向核心网装置发送TAI；
可选的，终端装置获得TAC(tracking area code,跟踪区域码)信息，UE基于TAC计算得到TAI。
其中，终端装置可以通过接收RMSI信息，该RMSI信息中包括TAC信息，来获得TAC信息。终端装置可以在接入流程/切换流程/基于系统消息修改的寻呼信息中获取RMSI信息。
终端装置基于TAC得到TAI，具体的，TAI＝移动国家码(MCC Mobile Country Code)+移动网络码(MNC Mobile Network Code)+跟踪区码(TAC Tracking Area Code)，终端装置可根据获得的TAC信息，以及MCC信息和MNC信息获得TAI信息。
终端装置向核心网装置发送该TAI信息，该TAI信息可通过基站装置发送给核心网装置。
S203，核心网给终端装置下发所有TA集合卫星信息和卫星服务时长信息：
所示核心网装置向所述终端装置发送针对该终端装置的TALIST指示信息，以及TA list信息中卫星标识信息所标识的卫星的服务时长信息。该服务时长为因为卫星的移动，在该卫星每次开始服务到因为移动导致的结束服务的时间。
当每颗卫星的服务时间为相同时，服务时长信息可以为一个指示信息，指示每个卫星的服务时长；如果卫星的服务时间不等长，需要指示每颗卫星的服务时间。
S204，终端装置根据自己当前TAI，和当前时间，确定当前服务卫星是否匹配该TAI和该当前时间所属的TA集合所对应的卫星集合信息中的卫星，如不匹配，则终端装置发起TAU更新；
终端装置根据当前TAI，以及当前时间，可以确定对应的TA集合信息，从步骤S203中获得的多个TA集合信息中可知，通过当前TAI信息可以确定所对应的TA集合信息，该TA集合信息中的TA list包括该TAI；以及根据当前时间确定该TA集合信息对应的ti信息，该ti信息对应当前时间，则可以确定该TA信息中的ti信息所对应发卫星集合信息，该卫星集合信息包括多个卫星的标识信息，当终端装置的当前服务卫星属于该卫星集合中时，则认为当前服务卫星和当前时间所属的TAList_ti对应的卫星集合信息中的卫星标识 所对应的卫星匹配，则不发起TAU更新，节省系统信令开销。
如果当UE的当前服务卫星不属于该卫星集合中时，则当前服务卫星和该时刻所属的TAList_ti对应的卫星集合信息中的卫星不匹配，所述UE发起TAU更新。TAU更新可按照现有技术中的更新流程进行。
如图3所示的该终端的TA集合信息中，TAlist_t0，TAlist_t1和TAlist_t2分别代表了该TAlist(TA集合)在t0，t1和t2时刻，为其服务的卫星(SAT)。TAlist中包括多个TAI。为如果终端装置当前的TAI属于该TA集合信息所对应的TAI list，当前服务终端的卫星为卫星10时，最快2M分钟，最慢1M分钟将切换到卫星12，符合该预期的终端不需要发起TAU，其中M为每颗卫星的服务时长；当预测的切换后卫星不位于TAList_t0对应的卫星时，如预测切换到TAList_t1所对应的卫星中，需要上报TAI，核心网更新终端装置对应的服务卫星为TAList_t1所对应的卫星，并根据卫星的服务时长预计服务该终端装置后续所对应的TAList_ti的卫星来进行寻呼；
可选的，当所述服务卫星为所在TAlist t0的最后时，即当属于TAlist t0对应的服务卫星完成服务后，下个服务卫星将不在所述TAlist t0所对应的卫星集合中，对应这种情况，作为另一种可选的实现方式，对于这种情况下也判断为不匹配，这种情况下的不匹配可称为临界不匹配，终端装置需要上报TAI给核心网装置，核心网装置根据所维护的TAlist t0信息，确认为临界不匹配，则核心网在当前需要寻呼的时候，寻呼边缘的当前服务的卫星和下个TA lsit清单中即将为该终端装置服务的卫星。
作为另一种可选的实现方式，终端在上报TAI时，发送临界不匹配的指示信息，该指示信息用于指示当前不匹配的情况属于临界不匹配。
可选的，在另一种实现方式中，因为卫星一个波束的覆盖范围大，为避免寻呼时进行所有波束扫描，终端装置更新上报TAI时，还可以上报最优SSB(synchronization signal and PBCH block,同步信号&广播信道块)或BM CSI-RS资源标识，下一次核心网寻呼时，核心网可以基于卫星运行轨迹计算寻呼时刻UE所处的卫星和对应服务的波束，寻呼该UE可以优先寻呼该卫星和该波束，降低扫描开销。寻呼失败后按预期的TAList_ti或TAList_ti+相邻TAList_ti进行寻呼方式。
根据本申请实施例的方案，UE通过接受来自核心网所维护的TAList_ti集合，使得UE能够获得TAList_ti随时间的规律性变化，在不符合该变化规律的情况下再发起TAU更新，即使终端位置信息不可用，也能够有效避免静止或低速用户的频繁TAU更新，减少了系统的信令开销。
以上，结合图2至图3详细说明了本申请实施例提供的方法。以下，结合图4至图6详细说明本申请实施例提供的装置。为了实现上述本申请实施例提供的方法中的各功能，各网元可以包括硬件结构和/或软件模块，以硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各功能。上述各功能中的某个功能以硬件结构、软件模块、还是硬件结构加软件模块的方式来执行，取决于技术方案的特定应用和设计约束条件。
图4是本申请实施例提供的通信装置的示意性框图。如图4所示，该通信装置400可以包括收发单元420。
在一种可能的设计中，该通信装置400可对应于上文方法实施例中的终端设备，或者配置于(或用于)终端设备中的芯片，或者其他能够实现终端设备的方法的装置、模块、电路或单元等。
应理解，该通信装置400可对应于根据本申请实施例的方法200中的终端设备，该通信装置400可以包括用于执行图2中的方法200中终端设备执行的方法的单元。并且，该通信装置400中的各单元和上述其他操作和/或功能分别为了实现图2中的方法200的相应流程。
可选地，通信装置400还可以包括处理单元410，该处理单元410可以用于处理指令或者数据，以实现相应的操作。
还应理解，该通信装置400为配置于(或用于)终端设备中的芯片时，该通信装置400中的收发单元420可以为芯片的输入/输出接口或电路，该通信装置400中的处理单元410可以为芯片中的处理器。
可选地，通信装置400还可以包括存储单元430，该存储单元430可以用于存储指令或者数据，处理单元410可以执行该存储单元中存储的指令或者数据，以使该通信装置实现相应的操作。
应理解，该通信装置400中的收发单元420为可通过通信接口(如收发器或输入/输出接口)实现，例如可对应于图5中示出的终端设备500中的收发器510。该通信装置400中的处理单元410可通过至少一个处理器实现，例如可对应于图5中示出的终端设备500中的处理器520。该通信装置400中的处理单元410还可以通过至少一个逻辑电路实现。该通信装置400中的存储单元430可对应于图5中示出的终端设备500中的存储器。
还应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
在另一种可能的设计中，该通信装置400可对应于上文方法实施例中的核心网装置，例如，或者该通信装置400可以是配置于(或用于)核心网设备中的芯片，或者其他能够实现核心网装置的方法的装置、模块、电路或单元等。
应理解，该通信装置400可对应于根据本申请实施例的方法200中的核心网装置，该通信装置400可以包括用于执行图2中的方法200中核心网装置。
可选地，通信装置400还可以包括处理单元410，该处理单元410可以用于处理指令或者数据，以实现相应的操作。
还应理解，该通信装置400为配置于(或用于)核心网设备中的芯片时，该通信装置400中的收发单元420可以为芯片的输入/输出接口或电路，该通信装置400中的处理单元410可以为芯片中的处理器。
可选地，通信装置400还可以包括存储单元430，该存储单元430可以用于存储指令或者数据，处理单元410可以执行该存储单元中存储的指令或者数据，以使该通信装置实现相应的操作。
应理解，该通信装置400配置于核心网设备，该通信装置400中的收发单元420为可通过通信接口(如收发器或输入/输出接口)实现，例如可对应于图6中示出的核心网设备600中的收发器603。该通信装置400中的处理单元410可通过至少一个处理器实现，例如可对应于图6中示出的核心网设备(通信设备600)中的处理器601，该通信装置400中的处理单元410可通过至少一个逻辑电路实现。
还应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
图6是本申请实施例提供的核心网装置600的结构示意图。该核心网装置600可应用 于如图1所示的系统中，执行上述方法实施例中终端设备的功能。如图所示，该核心网装置600包括处理器601和收发器603。可选地，该终端设备600还包括存储器602。其中，处理器620、收发器610和存储器602之间可以通过内部连接通路互相通信，传递控制和/或数据信号。该存储器用于存储计算机程序，该处理器601用于执行该存储器中的该计算机程序，以控制该收发器603收发信号。处理器601是一个或多个中央处理器(central processing unit，CPU)，也可以是特定集成电路(application specific integrated circuit，ASIC)，或者是被配置成实施本申请实施例的一个或多个集成电路，例如：一个或多个微处理器(digital signal processor，DSP)，或，一个或者多个现场可编程门阵列(field programmable gate array，FPGA)。
可选地，处理器601可以通过运行或执行存储在存储器602内的软件程序，以及调用存储在存储器602内的数据，执行核心网装置的各种功能。
在具体的实现中，作为一种实施例，处理器601可以包括一个或多个CPU，例如图6中所示出的CPU0和CPU1。
具体实现时，该存储器602也可以集成在处理器620中，或者独立于处理器620。该处理器601可以与图4中的处理单元对应。
上述收发器603可以与图5中的收发单元对应。收发器603可以包括接收器(或称接收机、接收电路)和发射器(或称发射机、发射电路)。其中，接收器用于接收信号，发射器用于发射信号。
应理解，图6所示的通信装置600能够实现图2所示方法实施例中涉及核心网装置的过程。通信装置600(核心网装置)中的各个模块的操作和/或功能，分别为了实现上述方法实施例中的相应流程。具体可参见上述方法实施例中的描述，为避免重复，此处适当省略详细描述。
上述处理器601可以用于执行前面方法实施例中描述的由核心网装置内部实现的动作，而收发器603可以用于执行前面方法实施例中描述的终端设备向网络设备发送或从网络设备接收的动作。具体请见前面方法实施例中的描述，此处不再赘述。
应理解，上述处理装置可以是一个或多个芯片。例如，该处理装置可以是现场可编程门阵列(field programmable gate array，FPGA)，可以是专用集成芯片(application specific integrated circuit，ASIC)，还可以是系统芯片(system on chip，SoC)，还可以是中央处理器(central processor unit，CPU)，还可以是网络处理器(network processor，NP)，还可以是数字信号处理电路(digital signal processor，DSP)，还可以是微控制器(micro controller unit，MCU)，还可以是可编程控制器(programmable logic device，PLD)或其他集成芯片。
根据本申请实施例提供的方法，本申请还提供一种计算机程序产品，该计算机程序产品包括：计算机程序代码，当该计算机程序代码由一个或多个处理器执行时，使得包括该处理器的装置执行图2所示实施例中的方法。
本申请实施例提供的技术方案可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、网络设备、终端设备、核心网设备、机器学习设备或者其他可 编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机可以存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，数字视频光盘(digital video disc，DVD))、或者半导体介质等。
根据本申请实施例提供的方法，本申请还提供一种计算机可读存储介质，该计算机可读存储介质存储有程序代码，当该程序代码由一个或多个处理器运行时，使得包括该处理器的装置执行图2所示实施例中的方法。
根据本申请实施例提供的方法，本申请还提供一种系统，其包括至少一个前述的第一接入网装置和至少一个前述的第二接入装置。
可选地，该系统还可以进一步包括前述的一个或多个终端设备。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (14)

  1. 一种卫星通信方法，其特征在于，包括：
    终端装置接收来自核心网装置的以下信息：
    多个跟踪区TA集合信息，每个所述TA集合信息包括多个TA信息；
    和每个所述TA集合对应的时间信息；
    所述每个TA集合信息和其对应的所述时间信息共同对应的卫星集合信息，所述卫星集合信息包括多个卫星的标识信息；
    以及每个所述卫星的服务时长信息；
    所述终端装置根据所述终端装置的当前TA信息和当前时间信息，确定所述终端装置的服务卫星；
    当所述当前TA信息所属的所述TA集合和所述当前时间信息所属的所述时间信息所共同对应的卫星集合信息，和所述服务卫星不匹配，所述终端装置向所述核心网装置发送所述当前TA信息。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述终端装置发送最优同步信号和广播信道块SSB或波束测量的信道状态信息参考信号BM CSI-RS资源标识。
  3. 根据权利要求1或2所述的方法，其特征在于，所述方法还包括：
    所述终端装置根据所述当前TA信息，确定所属TA集合，根据所述当前时间信息，确定所述TA集合对应的时间信息，获得所述卫星集合信息；
    当所述卫星集合信息中不包括所述服务卫星的标识信息，所述终端装置确定所述服务卫星与所述当前TA信息所属的所述TA list和所述当前时间信息所属的所述时间信息所对应的卫星集合信息不匹配。
  4. 一种卫星通信方法，其特征在于，包括：
    核心网装置向所述终端装置发送以下信息：
    多个TA集合信息，所述TA集合包括多个TA信息；
    每个所述TA集合信息对应的时间信息；
    所述每个TA集合信息和其对应的所述时间信息共同对应的卫星集合信息，所述卫星集合信息包括多个卫星的标识信息；
    以及每个所述卫星的服务时长信息；
    接收所述终端装置根据接收到的所述信息发送的TA信息。
  5. 根据权利要求4所述的方法，其特征在于，所述方法还包括：
    接收来自所述终端装置的最优SSB或BM CSI-RS资源标识。
  6. 根据权利要求5所述的方法，其特征在于，所述方法还包括：
    所述核心网装置根据所述最优SSB或BM CSI-RS资源标识寻呼所述终端装置。
  7. 一种通信装置，其特征在于，包括：
    收发单元，用于接收来自核心网装置的以下信息：
    多个TA集合信息，每个所述TA集合信息包括多个TA信息；
    和每个所述TA集合信息对应的时间信息；
    所述每个TA集合信息和其对应的所述时间信息共同对应的卫星集合信息，所述卫星 集合信息包括多个卫星的标识信息；
    以及每个所述卫星的服务时长信息；
    处理单元，用于根据所述终端装置的当前TA信息和当前时间信息，确定所述终端装置的服务卫星；
    所述收发单元，还用于当所述当前TA信息所属的所述TA集合和所述当前时间信息所属的所述时间信息所共同对应的卫星集合信息，和所述服务卫星不匹配，所述终端装置向所述核心网装置发送所述当前TA信息。
  8. 根据权利要求7所述的装置，其特征在于，
    所述收发单元用于发送最优SSB或BM CSI-RS资源标识。
  9. 根据权利要求7或8所述的装置，其特征在于，
    所述处理单元，用于根据所述终端装置的当前TA信息，确定所属TA集合，根据所述当前时间信息，确定所述TA集合对应的时间信息，获得所述卫星集合信息；
    当所述卫星集合信息中不包括所述服务卫星的标识信息，确定所述服务卫星与所述当前TA信息所属的所述TA list和所述当前时间信息所属的所述时间信息所对应的卫星集合信息不匹配。
  10. 一种通信装置，其特征在于，包括：
    收发单元，用于向所述终端装置发送以下信息：
    多个TA集合信息，所述TA集合信息包括多个TA信息；
    每个所述TA集合信息对应的时间信息；
    所述每个TA集合信息和其对应的所述时间信息共同对应的卫星集合信息，所述卫星集合信息包括多个卫星的标识信息；
    以及每个所述卫星的服务时长信息；
    所述收发单元还用于接收所述终端装置根据接收到的所述信息发送的TA信息。
  11. 根据权利要求10所述的装置，其特征在于，
    所述处理单元用于接收来自所述终端装置的最优SSB或BM CSI-RS资源标识。
  12. 根据权利要求11所述的装置，其特征在于，还包括处理单元，
    所述处理单元用于根据所述最优SSB或BM CSI-RS资源标识寻呼所述终端装置。
  13. 一种计算机可读存储介质，其特征在于，存储有指令，当所述指令在计算机上运行时，使得所述计算机执行如权利要求1至3中任一项所述的方法，或如权利要求4至6中任一项所述的方法。
  14. 一种芯片，其特征在于，包括至少一个处理器和通信接口；
    所述通信接口用于接收输入所述芯片的信号或从所述芯片输出的信号，所述处理器与所述通信接口通信且通过逻辑电路或执行代码指令实现如权利要求1至3中任一项所述的方法，或如权利要求6至8中任一项所述的方法。
PCT/CN2023/070014 2021-12-31 2023-01-03 卫星通信方法和通信装置 WO2023126008A2 (zh)

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