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WO2025082309A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

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Publication number
WO2025082309A1
WO2025082309A1 PCT/CN2024/124678 CN2024124678W WO2025082309A1 WO 2025082309 A1 WO2025082309 A1 WO 2025082309A1 CN 2024124678 W CN2024124678 W CN 2024124678W WO 2025082309 A1 WO2025082309 A1 WO 2025082309A1
Authority
WO
WIPO (PCT)
Prior art keywords
satellite
terminal device
information
area
switching request
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/124678
Other languages
English (en)
Chinese (zh)
Inventor
廖婷
周晓云
宗在峰
李光磊
杨文进
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2025082309A1 publication Critical patent/WO2025082309A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • H04B7/18521—Systems of inter linked satellites, i.e. inter satellite service
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/06—Airborne or Satellite Networks

Definitions

  • the present application relates to the field of communications, and more specifically, to a communication method and device.
  • Satellite network is a hot topic in the world today. Satellite communication programs have become increasingly mature, providing high-speed network access and interactive multimedia services. Currently, base stations, user plane function (UPF) network elements, and router functions can be deployed on satellites.
  • UPF user plane function
  • the present application provides a communication method and apparatus, which can ensure that the transmission service between the satellite and the terminal device after switching is not interrupted, thereby improving the user experience.
  • a communication method being applied to a first satellite, the first satellite integrating a user plane function (UPF), the method comprising: receiving a first switching request from a second satellite, the first switching request being used to request a takeover satellite in a second region to switch from the second satellite to the first satellite, and updating UPF configuration information of the first satellite to UPF configuration information corresponding to the second region.
  • UPF user plane function
  • the first satellite before receiving the first switching request from the second satellite, the first satellite serves the third terminal device in the first area, and the second satellite serves the first terminal device in the second area.
  • the UPF configuration information of the first satellite is updated to the UPF configuration information of the second area through the first switching request, so that after the satellite switching occurs, the first terminal device in the second area does not need to renegotiate with the first satellite to establish a connection, so that the transmission service between the first terminal device and the satellite is not interrupted, thereby improving the user experience.
  • the first switching request includes a switching time point corresponding to the switching of the takeover satellite in the second area to the first satellite.
  • the method also includes: obtaining UPF configuration information corresponding to the second area.
  • the first satellite receives UPF configuration information corresponding to the second area from the second satellite, or the first satellite receives UPF configuration information corresponding to the second area from the control network element, or the first satellite obtains UPF configuration information of the second area based on ephemeris information.
  • the UPF configuration information corresponding to the second area includes information of the Internet Protocol IP address pool corresponding to the second area; updating the UPF configuration information of the first satellite to the UPF configuration information corresponding to the second area includes: updating the information of the IP address pool of the first satellite to the information of the IP address pool corresponding to the second area.
  • the UPF configuration information corresponding to the second area also includes satellite IP address information corresponding to the second area
  • updating the UPF configuration information of the first satellite to the UPF configuration information corresponding to the second area includes: updating the satellite IP address information of the first satellite to the satellite IP address information corresponding to the second area.
  • the satellite IP address information of the satellite can be changed.
  • the second terminal device of the remote satellite service and the first terminal device corresponding to the second area of the second satellite service can communicate through the tunnel between satellites.
  • the satellite IP address information of the first satellite is updated to the satellite IP of the second satellite
  • the tunnel destination address of the remote satellite is still the same IP address.
  • the method further includes: sending first information to a remote satellite, the first information Used to notify the target terminal device that the anchor satellite is switched from the second satellite to the first satellite, the first information includes satellite IP address information of the second satellite and identification information of the target terminal device, the target terminal device is the first terminal device, the first terminal device is located in the second area, or the target terminal device is a terminal device in the first terminal device that meets the signal quality requirements.
  • the satellite IP address of the satellite cannot be changed.
  • the remote satellite is notified through the first information that the anchor satellite of the target terminal device taken over by the first satellite is switched from the second satellite to the first satellite, and the tunnel destination address of the remote satellite needs to be changed, and then a tunnel with the tunnel destination address being the first satellite IP address is established, which helps to uninterrupted transmission between the second terminal device and the target terminal device served by the remote satellite, thereby improving user experience.
  • the method further includes: sending a first message to the second satellite, where the first message is used to trigger the second satellite to delete or back up UPF configuration information corresponding to the second area.
  • the storage pressure of the second satellite can be reduced by triggering the second satellite to delete or back up the UPF configuration information corresponding to the second area through the first information.
  • the first switching request includes identification information of the first terminal device, and the first terminal device is located in the second area.
  • the method also includes: taking over the target terminal device according to the first switching request, and the target terminal device is the first terminal device.
  • the first satellite can completely take over the first terminal device corresponding to the second area.
  • the first switching request includes identification information of the first terminal device, the first terminal device is located in the second area, and the method also includes: sending first indication information to the second satellite, the first indication information is used to indicate the situation that the first satellite has successfully taken over or is about to take over the target terminal device.
  • the target terminal device includes a terminal device among the first terminal devices that meets the signal quality requirement.
  • the first satellite can take over or is ready to take over the terminal devices that meet the signal quality requirements in the first terminal devices. That is, the first satellite can partially take over the first terminal devices corresponding to the second area, and the first terminal devices that can be partially taken over are first terminal devices for which signal quality detection is initiated after the first satellite receives the first terminal device information of the switching request, and the first terminal devices that meet the signal detection are called terminal devices that meet the signal quality requirements.
  • the first switching request also includes wireless resource information corresponding to the first terminal device
  • the method also includes: based on the wireless resource information, the first satellite configures wireless resources for the target terminal device that is successfully taken over.
  • a communication method is provided, which is applied to a second satellite, wherein the second satellite integrates a user plane function, and the method includes: sending a first switching request to a first satellite, wherein the first switching request is used to request a takeover satellite in a second area to switch from the second satellite to the first satellite.
  • the first switching request is used to trigger updating of the user plane function UPF configuration information of the first satellite to the UPF configuration information corresponding to the second area.
  • sending the first switching request to the first satellite includes: generating the first switching request according to ephemeris information, and sending the first switching request to the first satellite.
  • sending the first switching request to the first satellite includes: determining, based on the ephemeris information, that a takeover satellite in the second region is about to be switched from the second satellite to the first satellite, and sending the first switching request to the first satellite.
  • the method further includes: receiving a second switching request from a control network element, the second switching request being used to request that a takeover satellite in the second area be switched from the second satellite to the first satellite.
  • Sending the first switching request to the first satellite includes: sending the first switching request to the first satellite according to the second switching request.
  • the first switching request includes a switching time point corresponding to the switching of the takeover satellite in the second area to the first satellite.
  • the first switching request includes UPF configuration information corresponding to the second area.
  • the method further includes: sending the UPF configuration information corresponding to the second area to the first satellite.
  • the UPF configuration information corresponding to the second area includes information of a first Internet Protocol IP address pool corresponding to the second area, and the information of the first IP address pool is used to update information of a second IP address pool of the first satellite.
  • the UPF configuration information corresponding to the second area also includes satellite IP address information corresponding to the second area, and the satellite IP address information corresponding to the second area is used to update the satellite IP address information of the first satellite.
  • the method further includes: sending first information to the remote satellite, the first information being used to notify the target terminal device that the anchor satellite is switched from the second satellite to the first satellite, the first information including satellite IP address information of the first satellite.
  • the target terminal device is the first terminal device, the first terminal device is located in the second area, or the target terminal device is a terminal device that meets the signal quality requirement among the first terminal devices.
  • the method further includes: receiving a first message. According to the first message, deleting or backing up UPF configuration information corresponding to the second area.
  • the first switching request includes identification information of the first terminal device, and the first terminal device is located in the second area.
  • the method further includes: receiving first indication information from the first satellite, the first indication information being used to indicate that the first satellite has successfully taken over or is about to take over a target terminal device, and sending the first indication information to a control network element.
  • the target terminal device includes a terminal device that meets the signal quality requirement among the first terminal devices.
  • the first switching request also includes wireless resource information corresponding to the first terminal device.
  • a third aspect provides a communication method, which is applied to a control network element, including: sending a second switching request to a second satellite, the second switching request being used to request switching a takeover satellite of a second area from the second satellite to a first satellite. Triggering the second satellite to determine a first switching request, the first switching request being used to request switching a takeover satellite of the second area from the second satellite to the first satellite.
  • the first switching request is also used to trigger updating of the UPF configuration information of the first satellite to the UPF configuration information corresponding to the second area.
  • the second switching request includes a switching time point corresponding to the switching of the takeover satellite in the second area to the first satellite.
  • the method also includes: sending UPF configuration information corresponding to the second area to the first satellite, the UPF configuration information corresponding to the second area includes information of a first Internet Protocol IP address pool corresponding to the second area, and the information of the first IP address pool is used to update the information of the second IP address pool of the first satellite.
  • the UPF configuration information corresponding to the second area also includes satellite IP address information of the second satellite, and the satellite IP address information corresponding to the second area is used to update the satellite IP address information of the first satellite.
  • the method further includes: receiving second information from the first satellite, the second information being used to notify the target terminal device that the anchor satellite is switched from the second satellite to the first satellite, the second information including satellite IP address information of the second satellite and identification information of the target terminal device.
  • Sending first information to a remote satellite the first information being used to notify the target terminal device that the anchor satellite is switched from the second satellite to the first satellite, the first information including satellite IP address information of the second satellite, satellite IP address information of the first satellite and identification information of the target terminal device, the target terminal device being the first terminal device, the first terminal device being located in the second area, or the target terminal device including a terminal device that meets the signal quality requirement among the first terminal devices.
  • the method further includes: receiving a confirmation reception message from the first satellite, the confirmation reception message being used to indicate that the first satellite confirms receipt of the UPF configuration information corresponding to the second area. Sending a first message to the second satellite, the first message being used to trigger the second satellite to delete or back up the UPF configuration information corresponding to the second area.
  • determining the second switching request includes: determining the second switching request according to ephemeris information.
  • the second switching request includes identification information of a fourth terminal device, and the fourth terminal device is located in the second area.
  • the method also includes: receiving first indication information from a second satellite, the first indication information being used to indicate a situation in which the first satellite has successfully taken over or is about to take over a target terminal device, the target terminal device being the first terminal device, the first terminal device being located in the second area, or the target terminal device being a terminal device in the first terminal device that meets the signal quality requirements, and the fourth terminal device includes the first terminal device.
  • a fourth aspect provides a communication method, which is applied to a remote satellite, and the remote satellite provides services for a second terminal device, including: receiving first information, the first information is used to instruct the anchor satellite of the target terminal device to switch from the second satellite to the first satellite, wherein the first terminal device communicates with the second terminal device through the anchor satellite and the remote satellite, the first information includes identification information of the target terminal device, the target terminal device is the first terminal device, the first terminal device is located in the second area, or the target terminal device is a terminal device among the first terminal devices that meets the signal quality requirements.
  • first data is sent to the first satellite, and the first data is data sent by the second terminal device to the first terminal device.
  • the satellite IP address of the satellite cannot be changed.
  • the remote satellite is notified through the first information that the anchor satellite of the target terminal device taken over by the first satellite is switched from the second satellite to the first satellite, and the tunnel destination address of the remote satellite needs to be changed, and then a tunnel with the tunnel destination address being the satellite IP address of the first satellite is established, which helps to uninterrupted transmission between the second terminal device and the target terminal device served by the remote satellite, thereby improving user experience.
  • the first information when the first information comes from the second satellite, the first information includes satellite IP address information of the first satellite; or, when the first information comes from the first satellite, the first information includes satellite IP address information of the second satellite; or, when the first information comes from the control network element, the first information includes satellite IP address information of the first satellite and satellite IP address information of the second satellite.
  • the method further includes: establishing a tunnel between the remote satellite and the first satellite based on the satellite IP address information of the first satellite, wherein the tunnel is used to transmit data between the first terminal device and the second terminal device.
  • a communication device is provided, wherein the communication device is a first satellite, the first satellite integrates a user plane function, and includes a transceiver unit and a processing unit.
  • the transceiver unit is used to receive a first switching request from a second satellite, the first switching request is used to request a takeover satellite in a second area to switch from the second satellite to the first satellite.
  • the processing unit is used to update UPF configuration information of the first satellite to UPF configuration information corresponding to the second area.
  • the first satellite before receiving the first switching request from the second satellite, the first satellite serves the third terminal device in the first area, and the second satellite serves the first terminal device in the second area.
  • the first switching request includes a switching time point corresponding to the switching of the takeover satellite in the second area to the first satellite.
  • the transceiver unit is used to obtain UPF configuration information corresponding to the second area.
  • the first satellite receives UPF configuration information corresponding to the second area from the second satellite, or the first satellite receives UPF configuration information corresponding to the second area from the control network element, or the first satellite obtains UPF configuration information of the second area based on ephemeris information.
  • the UPF configuration information corresponding to the second area includes information of the Internet Protocol IP address pool corresponding to the second area; the processing unit is specifically used to update the information of the IP address pool of the first satellite to the information of the IP address pool corresponding to the second area.
  • the UPF configuration information corresponding to the second area also includes satellite IP address information corresponding to the second area
  • the processing unit is specifically used to update the satellite IP address information of the first satellite to the satellite IP address information corresponding to the second area.
  • the transceiver unit is also used to send first information to a remote satellite, the first information being used to notify the anchor satellite of the target terminal device to switch from the second satellite to the first satellite, the first information including satellite IP address information of the second satellite and identification information of the target terminal device, the target terminal device is the first terminal device, the first terminal device is located in the second area, or the target terminal device is a terminal device among the first terminal devices that meets the signal quality requirements.
  • the transceiver unit is further used to send a first message to the second satellite, where the first message is used to trigger the second satellite to delete or back up UPF configuration information corresponding to the second area.
  • the first switching request includes identification information of the first terminal device, the first terminal device is located in the second area, and the processing unit is also used to take over the target terminal device according to the first switching request, and the target terminal device is the first terminal device.
  • the first satellite can completely take over the first terminal device corresponding to the second area.
  • the first switching request includes identification information of the first terminal device, the first terminal device is located in the second area, and the transceiver unit is also used to send first indication information to the second satellite, and the first indication information is used to indicate that the first satellite has successfully taken over or is about to take over the target terminal device.
  • the target terminal device includes a terminal device in the first terminal device that meets the signal quality requirement.
  • the first satellite can take over or is ready to take over the first terminal device that meets the signal quality requirements in the second area.
  • the first switching request also includes wireless resource information corresponding to the first terminal device
  • the processing unit is also used to, based on the wireless resource information, configure wireless resources for the target terminal device that is successfully taken over by the first satellite.
  • a communication device is provided, the communication device being a second satellite, the second satellite integrating a user plane function, the device comprising: The transceiver unit is used to send a first switching request to the first satellite, where the first switching request is used to request the takeover satellite in the second area to switch from the second satellite to the first satellite.
  • the first switching request is used to trigger updating of the user plane function UPF configuration information of the first satellite to the UPF configuration information corresponding to the second area.
  • the device also includes a processing unit, the processing unit is used to generate a first switching request based on the ephemeris information, and the transceiver unit is also used to send the first switching request to the first satellite.
  • the transceiver unit is further configured to receive a second switching request from the control network element, where the second switching request is used to request that the takeover satellite of the second area be switched from the second satellite to the first satellite.
  • the transceiver unit is specifically configured to send a first switching request to the first satellite according to the second switching request.
  • the first switching request includes a switching time point corresponding to the switching of the takeover satellite in the second area to the first satellite.
  • the first switching request includes UPF configuration information corresponding to the second area.
  • the transceiver unit is further configured to send the UPF configuration information corresponding to the second area to the first satellite.
  • the UPF configuration information corresponding to the second area includes information of a first Internet Protocol IP address pool corresponding to the second area, and the information of the first IP address pool is used to update information of a second IP address pool of the first satellite.
  • the UPF configuration information corresponding to the second area also includes satellite IP address information corresponding to the second area, and the satellite IP address information corresponding to the second area is used to update the satellite IP address information of the first satellite.
  • the transceiver unit is also used to send first information to a remote satellite, the first information being used to notify the anchor satellite of the target terminal device to switch from the second satellite to the first satellite, the first information including satellite IP address information of the first satellite and identification information of the target terminal device, the target terminal device is the first terminal device, the first terminal device is located in the second area, or the target terminal device is a terminal device among the first terminal devices that meets the signal quality requirements.
  • the transceiver unit is further configured to receive a first message.
  • the processing unit is further configured to delete or back up UPF configuration information corresponding to the second area according to the first message.
  • the first switching request includes identification information of the first terminal device, and the first terminal device is located in the second area.
  • the transceiver unit is further configured to receive first indication information from the first satellite, where the first indication information is used to indicate that the first satellite has successfully taken over or is about to take over the target terminal device.
  • the transceiver unit is further configured to send the first indication information to the control network element.
  • the target terminal device includes a terminal device that meets the signal quality requirements in the first terminal device.
  • the first switching request also includes wireless resource information corresponding to the first terminal device.
  • a communication device which is a control network element, including a transceiver unit and a processing unit.
  • the transceiver unit is used to send a second switching request to the second satellite, and the second switching request is used to request to switch the takeover satellite of the second area from the second satellite to the first satellite.
  • the processing unit is used to trigger the second satellite to determine a first switching request, and the first switching request is used to request to switch the takeover satellite of the second area from the second satellite to the first satellite.
  • the first switching request is also used to trigger updating of the UPF configuration information of the first satellite to the UPF configuration information corresponding to the second area.
  • the second switching request includes a switching time point corresponding to the switching of the takeover satellite in the second area to the first satellite.
  • the transceiver unit is also used to send UPF configuration information corresponding to the second area to the first satellite, the UPF configuration information corresponding to the second area includes information of a first Internet Protocol IP address pool corresponding to the second area, and the information of the first IP address pool is used to update the information of the second IP address pool of the first satellite.
  • the UPF configuration information corresponding to the second area also includes satellite IP address information of the second satellite, and the satellite IP address information corresponding to the second area is used to update the satellite IP address information of the first satellite.
  • the transceiver unit is further configured to receive second information from the first satellite, The second information is used to notify the target terminal device that the anchor satellite is switched from the second satellite to the first satellite, and the second information includes the satellite IP address information of the second satellite and the identification information of the target terminal device.
  • the transceiver unit is also used to send the first information to the remote satellite, and the first information is used to notify the target terminal device that the anchor satellite is switched from the second satellite to the first satellite, and the first information includes the satellite IP address information of the second satellite, the satellite IP address information of the first satellite, and the identification information of the target terminal device, and the target terminal device is the first terminal device, and the first terminal device is located in the second area, or the target terminal device includes a terminal device that meets the signal quality requirement in the first terminal device.
  • the transceiver unit is further used to receive a confirmation reception message from the first satellite, where the confirmation reception message is used to indicate that the first satellite confirms reception of the UPF configuration information corresponding to the second area.
  • the transceiver unit is also used to send a first message to the second satellite, where the first message is used to trigger the second satellite to delete or back up the UPF configuration information corresponding to the second area.
  • the processing unit is specifically used to determine the second switching request based on the ephemeris information.
  • the second switching request includes identification information of a fourth terminal device, the fourth terminal device is located in the second area, and the transceiver unit is also used to receive first indication information from the second satellite, the first indication information is used to indicate that the first satellite has successfully taken over or is about to take over a target terminal device, the target terminal device is the first terminal device, the first terminal device is located in the second area, or the target terminal device is a terminal device in the first terminal device that meets the signal quality requirements, and the fourth terminal device includes the first terminal device.
  • a communication device which is a remote satellite, and the remote satellite provides services for a second terminal device, and includes a transceiver unit and a processing unit: the transceiver unit is used to receive first information, and the first information is used to indicate that the anchor satellite of the target terminal device is switched from the second satellite to the first satellite, wherein the first terminal device communicates with the second terminal device through the anchor satellite and the remote satellite, and the first information includes identification information of the target terminal device, the target terminal device is the first terminal device, the first terminal device is located in the second area, or the target terminal device is a terminal device among the first terminal devices that meets the signal quality requirements.
  • the processing unit is used to send first data to the first satellite according to the first information, and the first data is data sent by the second terminal device to the first terminal device.
  • the first information when the first information comes from the second satellite, the first information includes satellite IP address information of the first satellite; or, when the first information comes from the first satellite, the first information includes satellite IP address information of the second satellite; or, when the first information comes from the control network element, the first information includes satellite IP address information of the first satellite and satellite IP address information of the second satellite.
  • the processing unit is also used to: establish a tunnel between the remote satellite and the first satellite based on the satellite IP address information of the first satellite, and the tunnel is used to transmit data between the first terminal device and the second terminal device.
  • a communication device comprising: a memory for storing programs; and a processor for executing computer programs or instructions stored in the memory.
  • the processor is used to execute the method provided in any one of the implementations of the first or fourth aspects.
  • the device is a first satellite, a second satellite, a control network element, or a remote satellite.
  • the device is a chip, a chip system or a circuit in the first satellite, the second satellite, a control network element or a remote satellite.
  • the present application provides a processor for executing the method provided by any one of the implementation modes of the first to fourth aspects above.
  • the process of sending the above information and obtaining/receiving the above information in the above method can be understood as the process of outputting the above information by the processor, and the process of receiving the above information input by the processor.
  • the processor When outputting the above information, the processor outputs the above information to the interface and transmits it through the interface. After being output by the processor, the above information may also need to be processed in other ways before it reaches the interface.
  • the interface obtains/receives the above information and inputs it into the processor. Furthermore, after the interface receives the above information, the above information may need to be processed in other ways before it is input into the processor.
  • the processor may be a processor specifically used to execute these methods, or a processor that executes computer programs or instructions in a memory to execute these methods, such as a general-purpose processor.
  • the memory may be a non-transitory memory, such as a read-only memory (ROM), which may be integrated with the processor on the same chip or may be separately arranged on different chips.
  • ROM read-only memory
  • a computer-readable storage medium which stores a program code for execution by a device, and the program code includes a method for executing any one of the implementations of the first to fourth aspects above.
  • a computer program product comprising instructions is provided.
  • the computer program product When the computer program product is run on a computer, the computer executes the method provided in any one of the implementations of the first to fourth aspects above.
  • a chip which includes a processor and a communication interface.
  • the processor reads instructions stored in a memory through the communication interface and executes the method provided in any one of the implementation modes of the first to fourth aspects.
  • the chip may also include a memory, in which a computer program or instruction is stored, and the processor is used to execute the computer program or instruction stored in the memory.
  • the processor is used to execute the method provided in any one of the implementation methods of the first to fourth aspects above.
  • a communication system comprising at least one of the first satellite, the second satellite, the control network element and the remote satellite mentioned above, the first satellite being used to execute the method provided in any one of the implementations of the first aspect, the second satellite being used to execute the method provided in any one of the implementations of the second aspect, the control network element being used to execute the method provided in any one of the implementations of the third aspect, and the remote satellite being used to execute the method provided in any one of the implementations of the fourth aspect.
  • FIG1 is a schematic diagram of a communication system
  • FIG2 is a schematic diagram of a satellite switching scenario
  • FIG3 is an interactive schematic diagram of a communication method provided in an embodiment of the present application.
  • FIG4 is an interactive schematic diagram of another communication method provided in an embodiment of the present application.
  • FIG5 is an interactive schematic diagram of another communication method provided in an embodiment of the present application.
  • FIG6 is an interactive schematic diagram of yet another communication method provided in an embodiment of the present application.
  • FIG7 is an interactive schematic diagram of yet another communication method provided in an embodiment of the present application.
  • FIG8 is an interactive schematic diagram of yet another communication method provided in an embodiment of the present application.
  • FIG9 is an interactive schematic diagram of yet another communication method provided in an embodiment of the present application.
  • FIG10 is an interactive schematic diagram of yet another communication method provided in an embodiment of the present application.
  • FIG11 is an interactive schematic diagram of yet another communication method provided in an embodiment of the present application.
  • FIG12 is a schematic diagram of an interactive data transmission provided in an embodiment of the present application.
  • FIG13 is an interactive schematic diagram of yet another communication method provided in an embodiment of the present application.
  • FIG14 is a schematic diagram of a communication device 1400 provided in an embodiment of the present application.
  • FIG15 is a schematic structural diagram of a communication device 1500 provided in an embodiment of the present application.
  • FIG. 16 is a schematic diagram of a chip system 1600 provided in an embodiment of the present application.
  • At least one means one or more, and “more than one” means two or more.
  • “And/or” describes the association relationship of associated objects, indicating that three relationships may exist.
  • a and/or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural.
  • the character “/” generally indicates that the associated objects before and after are in an "or” relationship.
  • “At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items.
  • At least one of a, b and c can mean: a, or b, or c, or a and b, or a and c, or b and c, or a, b and c.
  • a, b and c can be single or multiple, respectively.
  • first”, “second” and various numerical numbers indicate distinctions made for ease of description and are not used to limit the scope of the embodiments of the present application. For example, to distinguish between different satellites, etc., rather than to describe a specific order or sequence. It should be understood that the objects described in this way can be interchanged where appropriate so as to be able to describe solutions other than the embodiments of the present application.
  • used for indication may include being used for direct indication and being used for indirect indication.
  • indication information may include that the indication information directly indicates A or indirectly indicates A, but it does not mean that the indication information must carry A.
  • the indication method involved in the embodiments of the present application should be understood to include various methods that can enable the party to be indicated to know the information to be indicated.
  • the information to be indicated can be sent as a whole or divided into multiple sub-information and sent separately, and the sending period and/or sending time of these sub-information can be the same or different.
  • the present application does not limit the specific sending method.
  • the "indication information" in the embodiments of the present application may be an explicit indication, i.e., directly indicated by signaling, or obtained by combining other rules or other parameters or by deduction according to the parameters indicated by the signaling. It may also be an implicit indication, i.e., obtained by combining other rules or other parameters or by deduction according to a rule or relationship.
  • the present application does not make any specific limitation on this.
  • protocol may refer to a standard protocol in the field of communications, such as 5G protocol, new radio (NR) protocol and related protocols used in future communication systems, which are not limited in this application.
  • Pre-setting can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in the device, and this application does not limit its specific implementation method.
  • storage may refer to storage in one or more memories.
  • the one or more memories may be separately set or integrated in an encoder or decoder, a processor, or a communication device.
  • the one or more memories may also be partially separately set and partially integrated in a decoder, a processor, or a communication device.
  • the type of memory may be any form of storage medium, which is not limited in this application.
  • Satellite communication technology refers to the technology of wireless communication devices on the ground accessing the network through satellites, or the technology of wireless communication devices on the ground communicating with each other through satellites as relays. Compared with traditional mobile communication systems, satellite communication has a wider coverage range and can overcome natural geographical obstacles such as oceans, deserts, and mountains.
  • multiple satellites may be included, and the types of the multiple satellites may be the same or different.
  • Wireless links exist between different satellites, which can complete signaling interaction and user data transmission between access network devices.
  • satellites may have different coverage areas, motion characteristics, and the resulting propagation delays and jitters due to different orbital altitudes.
  • satellites can be divided into geostationary earth orbit (GEO) satellites, i.e., high-orbit satellites, low earth orbit (LEO), medium earth orbit (MEO), and other satellites (Other SAT), etc., according to their orbital types.
  • GEO geostationary earth orbit
  • the UPF satellite solution involved in the current 3GPP standard is that the UPF is on a GEO satellite, that is, on a high-orbit satellite.
  • the high-orbit satellite is about 36,000 km from the earth, and the signal coverage of the ground by the high-orbit satellite is fixed.
  • the signal coverage on the ground may move away for a period of time.
  • the low-orbit scenario there are also base stations, UPFs, and router functions deployed on the same satellite.
  • Ephemeris information refers to some information related to the satellite constellation, mainly including the satellite's position and velocity state vector, orbital plane parameters and satellite level parameters. Through ephemeris information, we can know the position of different satellites in the airspace and the order of different satellites in the time domain. Through ephemeris information, we can obtain the ground coverage information at the corresponding time point.
  • the ground coverage information of the satellite can indicate that the terminal device is in a certain area on the ground and can be covered by the satellite signal.
  • the ground coverage information can also be called satellite coverage information, satellite reachable information, satellite available information or satellite coverage available information.
  • Beam hopping is also called beam hopping, quasi-earth-fixed bean or steerable beam. Beam hopping can use available satellite resources to provide services to specific locations or terminal devices. The lighting duration and angle make the ground area covered within a period of time fixed.
  • a moving beam is a beam that moves relative to the ground. It can also be called a non-steerable beam.
  • the angle of a moving beam is fixed after it is lit and will not adjust as the satellite moves. As the satellite moves, the area it covers on the ground will also change in real time.
  • FIG1 is a schematic diagram of a communication system.
  • the communication system includes terminal equipment, satellites, gateways, data networks, network elements #1 and network elements #2, wherein network element #1 may include an access and mobility management function (AMF) network element, a session management function (SMF) network element, and at least one of a controller, and network element #2 may include a policy control function (PCF) network element or a unified data management (UDM) network element.
  • AMF access and mobility management function
  • SMF session management function
  • PCF policy control function
  • UDM unified data management
  • Terminal equipment can include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems. Terminal equipment can also be called terminals. Terminal equipment can also be simply called equipment. Terminal equipment can also refer to user equipment (UE), access terminal, subscriber unit, user agent, cellular phone, smart phone, wireless data card, personal digital assistant (PDA) computer, tablet computer, wireless modem, handheld device (handset), laptop computer, smart point of sale (POS) machine, customer-premises equipment (CPE), machine type communication (MTC) terminal, high-altitude aircraft carried Communication equipment, wearable devices, drones, robots, terminals in D2D, terminals in vehicle to everything (V2X), virtual reality (VR) terminal equipment, 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, wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home or terminal equipment in future communication network, etc.
  • UE user equipment
  • Satellites can integrate one or more of the base station, UPF, and router functions.
  • base station also known as radio access network (RAN):
  • RAN radio access network
  • Access network equipment can also be called access equipment.
  • RAN can manage wireless resources, provide access services for terminal devices, and complete the forwarding of terminal device data between terminal devices and the core network.
  • RAN can also be understood as a base station in the network.
  • the access network device may be any communication device with wireless transceiver function for communicating with the terminal device.
  • the access network device includes but is not limited to: evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home evolved Node B (HeNB, or home Node B, HNB), baseband unit (BBU), wireless fidelity (WFI), wireless cellular network controller (WNC ...
  • the invention may be an access point (AP), a wireless relay node, a wireless backhaul node, a transmission point (TP) or a transmission and reception point (TRP) in a wireless (WiFi) system, and may also be a 5G mobile communication system, such as a gNB in an NR system, or a transmission point (TRP or TP), one or a group of (including multiple antenna panels) antenna panels of a base station in a 5G mobile communication system, or may also be a network node constituting a gNB or a transmission point, such as a baseband unit (BBU) or a distributed unit (DU).
  • AP access point
  • TP transmission point
  • TRP transmission and reception point
  • 5G mobile communication system such as a gNB in an NR system
  • TRP or TP transmission point
  • TRP or TP transmission point
  • a network node constituting a gNB or a transmission point, such as a baseband unit (BBU) or a distributed unit
  • the gNB may include a centralized unit (CU) and a DU.
  • the gNB may also include an active antenna unit (AAU).
  • the CU implements some of the gNB functions, and the DU implements some of the gNB functions.
  • the CU is responsible for processing non-real-time protocols and services, and implements the functions of the radio resource control (RRC) and packet data convergence protocol (PDCP) layers.
  • the DU is responsible for processing physical layer protocols and real-time services, and implements the functions of the radio link control (RLC), media access control (MAC) and physical (PHY) layers.
  • the AAU implements some physical layer processing functions, RF processing, and related functions of active antennas.
  • the information of the RRC layer is generated by the CU, and will eventually be encapsulated by the PHY layer of the DU to become PHY layer information, or converted from PHY layer information. Therefore, under this architecture, high-level signaling such as RRC layer signaling can also be considered to be sent by DU, or, sent by DU+AAU.
  • the access network device can be a device including one or more of a CU node, a DU node, and an AAU node.
  • the CU can be divided into an access network device in the access network, and the CU can also be divided into an access network device in the core network (CN), which is not limited in this application.
  • the user plane network element completes functions such as user plane data forwarding, session/flow-level billing statistics, bandwidth limitation, etc. That is, packet routing and forwarding, and quality of service (QoS) processing of user plane data.
  • QoS quality of service
  • Routers are used to collect topology and routing information of network nodes to guide the routing and forwarding of packet data.
  • the user plane network element can be a user plane function (UPF) network element.
  • UPF user plane function
  • a satellite gateway also called a transmitter or hub
  • GW A satellite gateway (also called a transmitter or hub) is a ground station that transmits data to and from a satellite to a local area network. It houses antennas and equipment that convert radio frequency (RF) signals to internet protocol (IP) signals for terrestrial connections.
  • RF radio frequency
  • IP internet protocol
  • a data network is a combination of data terminal equipment, data processing equipment and data communication equipment (including communication channels). It provides data transmission functions and resource sharing functions including data and data processing capabilities for communication stations and users distributed in different locations. It provides services such as operator services, Internet access or third-party services, including servers.
  • the server side implements video source encoding and rendering, etc.
  • the access management network element is mainly used for mobility management and access management.
  • the access management network element can be an AMF network element, which mainly performs functions such as mobility management and access authentication/authorization. In addition, it is also responsible for transmitting user policies between the terminal and the PCF network element.
  • the session management network element is mainly used for session management.
  • this network element can be an SMF network element, which is used for session management after user access, including protocol data unit (PDU) session establishment, modification, activation, deactivation, release, etc., as well as UE IP address allocation, DHCPv4/v6 function, ARP proxy, IPv6 Neighbour Solicitation Proxying for Ethernet PDU, user plane selection and control, session SSC mode determination and roaming functions.
  • PDU protocol data unit
  • UE IP address allocation DHCPv4/v6 function
  • ARP proxy IPv6 Neighbour Solicitation Proxying for Ethernet PDU
  • user plane selection and control session SSC mode determination and roaming functions.
  • the controller is used to manage and control the satellite-borne network elements or ground network elements, including but not limited to configuration delivery and table item delivery.
  • the policy control network element can be a PCF network element, which is mainly used to manage network behavior with a unified policy framework, provide policy rules to the control plane function (AMF, SMF) and access contract information related to policy decisions in the unified data repository (UDR).
  • AMF control plane function
  • SMF control plane function
  • UDR unified data repository
  • UDM is mainly used for UDM to store and obtain contract data
  • PCF to store and obtain policy data
  • store and use structured data for capability exposure and store application data for application detection.
  • the unified data management network element can be a UDM network element, which is mainly used to generate 3GPP AKA authentication certificates, user identity processing, access authorization based on contract information, service NF registration management, contract information management and other function-related data.
  • FIG. 2 is a schematic diagram of a satellite switching scenario.
  • satellite 1 covers area #1
  • satellite 1-1, satellite 1-2, and satellite 1-3 are different positions of satellite 1 in the time period from T1 to T2.
  • Satellite 2 covers area #2, and area #2 includes terminal equipment.
  • satellite 2-1, satellite 2-2, and satellite 2-3 are different positions of satellite 2 in the time period from T1 to T2.
  • area #2 is covered by satellite 1, and accordingly, area #1 can be covered by other satellites.
  • the satellite is not numbered in FIG2 .
  • the satellite is integrated with UPF network elements, or the satellite is integrated with base station and/or router functions on the basis of UPF.
  • the satellite is in a medium-low orbit and is in a state of constant movement relative to the ground coverage.
  • the onboard UPF will also move accordingly, and the corresponding terminal devices in the area taken over by the satellite will also be constantly changing. Since the UPF network elements of the current core network are not in a mobile state, if the current core network UPF operation mechanism is used, this is obviously inappropriate.
  • the terminal device in area #2 in Figure 2 establishes a connection with satellite 2 for communication.
  • the moving speed of the satellite is much greater than the moving speed of the terminal device.
  • satellite 1 takes over the terminal device in area #2.
  • the terminal device in area #2 needs to interrupt the connection with satellite 2 and re-establish the connection with satellite 1. This process is not only time-consuming, but also the user can perceive the process of satellite switching when using the terminal device, which will undoubtedly greatly affect the user experience.
  • FIG3 is an interactive schematic diagram of a communication method provided by an embodiment of the present application.
  • the first satellite, the second satellite and the remote satellite are used as the execution subjects of the interactive schematic diagram as an example to illustrate the corresponding method, but the present application does not limit the execution subjects of the interactive schematic diagram.
  • the first satellite in FIG3 may also be a chip, a chip system or a processor that supports the first satellite to implement the corresponding method, or a logic module or software that can implement all or part of the functions of the first satellite.
  • the second satellite in FIG3 may also be a chip, a chip system or a processor that supports the second satellite to implement the corresponding method, or a logic module or software that can implement all or part of the functions of the second satellite.
  • the remote satellite in FIG3 may also be a chip, a chip system or a processor that supports the control network element to implement the corresponding method, or a logic module or software that can implement all or part of the functions of the remote satellite.
  • S301 A second satellite sends a first switching request to a first satellite.
  • the first switching request may be used to request that the takeover satellite of the second area be switched from the second satellite to the first satellite.
  • the embodiment of the present application does not limit the size of the second area, and the second area may be the entire area or a portion of the second area.
  • the second area is the entire area.
  • the second area is a portion of the area.
  • the first switching request is used to request that the service satellite of the first terminal device located in the second area be switched from the second satellite to the first satellite.
  • the first terminal device can be one or more, and the embodiment of the present application does not limit the number of first terminal devices.
  • the first satellite can subsequently cover the second area by adjusting the beam angle to serve the first terminal device in the second area.
  • the first satellite gradually serves the first terminal device in the second area.
  • the second satellite generates the first switching request to the first satellite according to ephemeris information.
  • the second satellite can obtain the positions of different satellites above the second area and the temporal order relationship based on the ephemeris information to trigger the generation of the first switching request and send the first switching request to the first satellite.
  • the second satellite determines, based on the ephemeris information, that the takeover satellite in the second area is about to be switched from the second satellite to the first satellite; and sends a first switching request to the first satellite.
  • the second satellite can obtain the positions of different satellites over the second area and the time domain sequence based on the ephemeris information to determine that the takeover satellite in the second area is about to switch from the second satellite to the first satellite, and send a first switching request to the first satellite.
  • the second satellite receives a second switching request from the control network element, the second switching request being used to request the takeover satellite in the second region to switch from the second satellite to the first satellite. According to the second switching request, a first switching request is sent to the first satellite.
  • the second satellite sends the first switching request to the first satellite according to the request information of the second switching request.
  • the specific process of the control network element sending the second switching request to the second satellite can refer to the specific process of the second satellite sending the first switching request to the first satellite, which is not repeated here.
  • control network element includes ephemeris information.
  • the first switching request may further include a switching time point corresponding to the switching of the takeover satellite in the second area to the first satellite.
  • the switching time point may be the entry time point of the first satellite over the second area obtained according to the ephemeris information.
  • the first switching request also includes area range information of the second area.
  • the second area may be a polygonal area, in which case the area range information may be geographic coordinate information of polygon vertices or polygon boundary points.
  • the second area may be a circular area or an elliptical area, in which case the area range information may be the coordinates of the center point of the second area and the radius information with the center point as the center of the circle, or the area range information may be comprehensive description information of the long radius and the short radius of the elliptical area.
  • the embodiments of the present application do not limit the specific form of the area range information.
  • the second satellite may determine the area range information of the second area based on the center position coordinates and the beam radius of the satellite transmission beam.
  • the first switching request may further include identification information of the first terminal device.
  • the identification information may be an international mobile subscriber identification number (IMSI) or a temporary mobile subscriber identity (TMSI), etc., without limitation.
  • the first terminal device may be all or part of the terminal devices located in the second area. If the first terminal device is part of the terminal devices located in the second area, the first terminal device may be a terminal device that is determined by the second satellite to have services being transmitted in the second area.
  • the first handover request also includes radio resource information corresponding to the first terminal device.
  • the radio resource information may include radio resource control (RRC) information, such as RRC frequency band or frequency point, without limitation.
  • RRC radio resource control
  • the first satellite receives a first switching request and updates UPF configuration information of the first satellite to UPF configuration information corresponding to the second area.
  • the first switching request is also used to trigger updating of the user plane function UPF configuration information of the first satellite to the UPF configuration information corresponding to the second area.
  • the UPF configuration information corresponding to the second area includes information of an Internet Protocol (IP) address pool corresponding to the second area.
  • step S302 may include: updating the information of the IP address pool of the first satellite to the information of the IP address pool corresponding to the second area.
  • IP Internet Protocol
  • the IP address pool information may be the address allocation space of the terminal device, used to allocate IP addresses to the terminal device.
  • the IP address pool information corresponding to the second area may be understood as the address allocation control of the first terminal device in the second area, used to allocate IP addresses to the first terminal device in the second area.
  • step S302 may include: updating the satellite IP address information of the first satellite to the satellite IP address information corresponding to the second area.
  • the IP address information may include the loopback address of each network element on the satellite (for example, base station network element, router network element, etc.), and/or the interface address of the satellite topology connection, etc., which is used to identify the network elements and interfaces on the satellite without restriction.
  • the first satellite can update the UPF configuration information of the first satellite to the UPF configuration information corresponding to the second area before the switching time point.
  • the first satellite may perform S302 before the switching time point.
  • before the switching time point may be understood as before the switching time point and at the switching time point.
  • the first satellite may adjust to an initial beam angle before the switching time point and execute S302.
  • the UPF configuration information corresponding to the second area also includes one or more of the following information: configurations related to UPF platform function management, and configurations related to network address translation (NAT) function management.
  • the configurations related to UPF platform function management can be disk read and write detection, setting user interface, setting virtual interface, setting central processing unit (CPU) or memory usage detection window, setting CPU or memory usage overload threshold and overload recovery threshold, etc.
  • the configurations related to NAT function management can be IP address segments corresponding to the private network address pool for static address mapping, IP address segments corresponding to the public network address pool, virtual private network (VPN) instances, etc.
  • the first satellite after receiving the switching request, updates the UPF configuration information of the first satellite to the UPF configuration information of the second area.
  • the first terminal device in the second area does not need to renegotiate with the first satellite to establish a connection, so that the transmission service between the first terminal device and the satellite is not interrupted, thereby improving the user experience.
  • the above method also includes step S303.
  • the first satellite obtains UPF configuration information corresponding to the second area.
  • the first satellite obtains UPF configuration information corresponding to the second area from the second satellite.
  • the UPF configuration information corresponding to the second area may be complete UPF configuration information or partial information in the UPF configuration information, for example, a field that needs to be updated.
  • the first switching request includes UPF configuration information corresponding to the second area, or the second satellite may send the UPF configuration information corresponding to the second area to the first satellite through an independent message.
  • This embodiment of the present application is not limited to this.
  • the first satellite obtains the UPF configuration information corresponding to the second area from the control network element, which will be specifically described in detail in FIG5 .
  • the first satellite obtains UPF configuration information corresponding to the second area according to the ephemeris information.
  • the first satellite obtains the positions of different satellites over the second area and the temporal order of different satellites based on the ephemeris information, thereby obtaining partial information of the UPF configuration information corresponding to the second area, such as the specific value of the updated field.
  • the above method also includes S304.
  • S304 The first satellite takes over or determines a target terminal device to be taken over according to the first switching request.
  • target terminal device that is ready to be taken over may also be referred to as the target terminal device that is about to be taken over.
  • the target terminal when the first switching request includes the identification information of the first terminal device and the first terminal device is located in the second area, the target terminal can be the first terminal device. For example, assuming that the first terminal device is all the terminal devices in the second area, then the target terminal device can be all the terminal devices in the second area. For another example, assuming that the first terminal device is a terminal device that has services being transmitted in the second area, then the target terminal device can be some of the terminal devices in the second area. For another example, the target terminal device can be a terminal device that meets the signal quality requirements in the first terminal device, and can be one or more. Among them, meeting the signal quality requirements can refer to the signal strength, signal-to-noise ratio, bit error rate, or delay jitter packet loss rate meeting the threshold conditions.
  • the first satellite sends first indication information to the second satellite, where the first indication information is used to indicate that the first satellite has successfully taken over or is about to take over the target terminal device.
  • the second satellite deletes or backs up user information related to the target terminal device, for example, user context information of the target terminal device.
  • the first indication information is carried in the first message (see step S305), or the first satellite sends the first indication information to the second satellite through an independent message.
  • the first satellite taking over the target terminal device can be understood as the first satellite maintaining user context information of the target terminal device and configuring wireless resources for the target terminal device.
  • the user context information of the target terminal device includes the identification information of the target terminal device, the session identification information, the IP address information, One or more of tunnel identification information, next generation application protocol (NGAP) identification list and routing table entry.
  • NGAP next generation application protocol
  • the tunnel identification information can be a tunnel identification used for transmitting user messages of the target terminal device between the satellite-borne UPF network element and the on-board base station.
  • the satellite IP address information of the satellite can be changed.
  • the second terminal device of the remote satellite service and the first terminal device corresponding to the second area of the second satellite service can communicate through the tunnel between satellites.
  • the satellite IP address information of the first satellite is updated to the satellite IP of the second satellite
  • the tunnel destination address of the remote satellite is still the same IP address.
  • the above method also includes step S305.
  • S305 The first satellite sends a first message to the second satellite.
  • the first message may be used to trigger the second satellite to delete or back up the UPF configuration information corresponding to the second area.
  • the first message is also used to trigger the second satellite to delete or back up the user information related to the target terminal device.
  • the first message is also used to trigger the second satellite to delete or back up the user information related to the target terminal device.
  • the second satellite deletes or backs up the UPF configuration information corresponding to the second area.
  • the first message includes the first indication information in S304
  • the second satellite also deletes or backs up the user information related to the target terminal device according to the target terminal device indicated by the first indication information.
  • the storage pressure of the second satellite can be reduced by triggering the second satellite to delete or back up the UPF configuration information corresponding to the second area through the first information.
  • the above method further includes step S306a or S306b.
  • the first satellite sends first information to the remote satellite.
  • the first information may be used to notify the target terminal device that the anchor satellite is switched from the second satellite to the first satellite.
  • the first information may include satellite IP address information of the second satellite and identification information of the target terminal device, wherein the target terminal device may include a first terminal device located in the second area that is taken over by the first satellite.
  • S306b The second satellite sends the first information to the remote satellite.
  • the first information may be used to notify the target terminal device that the anchor satellite is switched from the second satellite to the first satellite.
  • the first information may include satellite IP address information of the first satellite and identification information of the target terminal device, wherein the target terminal device may include a first terminal device located in the second area that is taken over by the first satellite.
  • the remote satellite after receiving the first information, sends the first data to the first satellite, where the first data is data sent by the second terminal device to the first terminal device.
  • the satellite IP address of the satellite cannot be changed.
  • the remote satellite is notified through the first information that the anchor satellite of the target terminal device taken over by the first satellite is switched from the second satellite to the first satellite, and the tunnel destination address of the remote satellite needs to be changed, and then a tunnel with the tunnel destination address being the first satellite IP address is established, which helps to uninterrupted transmission between the second terminal device and the target terminal device served by the remote satellite, thereby improving user experience.
  • the satellite's identity information is identified by the satellite's IP address information, and the type of the satellite's transmission beam (for example, a hopping beam, a mobile beam)
  • the type of the satellite's transmission beam for example, a hopping beam, a mobile beam
  • FIG4 is an interactive schematic diagram of another communication method provided by an embodiment of the present application.
  • the first satellite, the second satellite and the control network element are used as the execution subjects of the interactive schematic diagram as an example to illustrate the corresponding method, but the present application does not limit the execution subjects of the interactive schematic diagram.
  • the first satellite in FIG4 may also be a chip, a chip system or a processor that supports the first satellite to implement the corresponding method, or a logic module or software that can implement all or part of the functions of the first satellite.
  • the second satellite in FIG4 may also be a chip, a chip system or a processor that supports the second satellite to implement the corresponding method, or a logic module or software that can implement all or part of the functions of the second satellite.
  • the control network element in FIG4 may also be a chip, a chip system or a processor that supports the control network element to implement the corresponding method, or a logic module or software that can implement all or part of the functions of the control network element.
  • S401 Control a network element to generate and send a second switching request to a second satellite.
  • the second switching request may be used to request that the takeover satellite of the second area be switched from the second satellite to the first satellite.
  • control network element may include ephemeris information.
  • control network element may generate and send a second switching request to the second satellite according to the ephemeris information.
  • S401 the control network element may generate and send a second switching request to the second satellite according to the ephemeris information.
  • S301 the second satellite generates and sends a first switching request to the first satellite. Please, I won’t elaborate on it here.
  • control network element determines that the takeover satellite of the second area is about to be switched from the second satellite to the first satellite, and sends a second switching request to the second satellite.
  • the control network element determines that the takeover satellite of the second area is about to be switched from the second satellite to the first satellite, and sends a first switching request to the second satellite, which will not be described in detail herein.
  • the second switching request may include UPF configuration information corresponding to the second area.
  • the second switching request may also include a switching time point corresponding to the switching of the takeover satellite in the second region to the first satellite.
  • a switching time point corresponding to the switching of the takeover satellite in the second region to the first satellite.
  • the control network element may be the AMF or SMF or controller shown in FIG1 , without limitation.
  • the embodiment of the present application does not limit the location of the control network element, and may be a ground control network element, or the control network element may be on a satellite.
  • the second switching request may include the first user information
  • the first user information may include user context information of the fourth terminal device.
  • the fourth terminal device may be all or part of the terminal devices corresponding to the second area. For example, one or more of the identification information of the fourth terminal device, the session ID of the fourth terminal device, the IP address information of the fourth terminal device, the next generation application protocol (NGAP) identification list, the tunnel identification, the wireless resource information, and the routing table entry.
  • NGAP next generation application protocol
  • the fourth terminal device may be one or more, without limitation.
  • the fourth terminal device may be P terminal devices in the second area, where P is a positive integer.
  • S402 The second satellite sends a first switching request to the first satellite according to the second switching request.
  • the first switching request may be used to request to switch the takeover satellite of the second area from the second satellite to the first satellite.
  • the first switching request may include UPF configuration information and/or second user information corresponding to the second area.
  • the second satellite can determine the UPF configuration information of the second satellite as the UPF configuration information of the second area.
  • the first switching request may include a switching time point corresponding to the switching from the takeover satellite of the second area to the first satellite.
  • the second user information may include user context information of the first terminal device, for example, one or more of the identification information, session identification information, IP address information, tunnel identification information, NGAP identification list, and wireless resource information of the first terminal device.
  • the first terminal device may be one or more, for example, N terminal devices in the fourth terminal device terminal, N is a positive integer, and N ⁇ P.
  • the wireless resource information may include RRC information, for example, RRC frequency band or frequency point.
  • the first terminal device may be a terminal device that is currently transmitting services in the second area, for example, a terminal device that is currently transmitting services in the fourth terminal device.
  • the second satellite determines the second user information according to the first user information in the second switching request.
  • the second satellite selects a terminal device that is currently transmitting services according to the first user information, and determines the terminal device that is currently transmitting services as the first terminal device, thereby determining the second user information.
  • the UPF configuration information corresponding to the second area may include at least one of the following information: Internet protocol (IP) address pool information, IP address information, configuration related to UPF platform function management, and configuration related to network address translation (NAT) function management.
  • IP Internet protocol
  • NAT network address translation
  • the configuration related to UPF platform function management may be disk read and write detection, setting user interface, setting virtual interface, setting central processing unit (CPU) or memory usage detection window, setting CPU or memory usage overload threshold and overload recovery threshold, etc.
  • the configuration related to NAT function management may be the IP address segment corresponding to the private network address pool of static address mapping, the IP address segment corresponding to the public network address pool, and the virtual private network (VPN) instance.
  • VPN virtual private network
  • the IP address pool information is the address allocation space of the terminal device, and the IP address information includes the loopback address and the interface address of the satellite topology connection.
  • the first handover request further includes one or more of base station network element configuration information, router network element information, user access context, user session context, routing information, etc. This embodiment of the present application does not limit this.
  • the first switching request when the second switching request includes the area range information of the second area, the first switching request also includes the area range information of the second area.
  • the second area may be a polygonal area, in which case the area range information may be the geographic coordinate information of the polygon vertices.
  • the second area may be a circular area, in which case the area range information may be the coordinates of the center point of the second area and the radius information with the center point as the center of the circle.
  • the embodiments of the present application do not limit the specific form of the area range information.
  • the first satellite receives the first switching request and updates the UPF configuration information of the first satellite to the UPF configuration information corresponding to the second area. interest.
  • the UPF configuration information of the first satellite can also be called the UPF configuration information corresponding to the first satellite in the first area, that is, the UPF configuration information corresponding to the terminal device taken over by the first satellite in the first area during the time period from T1 to T2.
  • the satellite IP address information of the first satellite is updated to the satellite IP address information corresponding to the second area.
  • the complete satellite IP address information corresponding to the second area For example, the complete satellite IP address information corresponding to the second area.
  • Another example is the field corresponding to the satellite IP address information that needs to be updated corresponding to the second area.
  • the satellite IP address information corresponding to the second area is encoded in order.
  • the satellite IP address information is represented by IPV4, that is, the satellite IP address information is represented by 32 bits.
  • the encoding of the satellite IP address information corresponding to the second area can be in the form of "a.b.c.d".
  • a can be understood as the first field that indicates the orbital height and orbital identification of the satellite corresponding to the second area through 8 bits;
  • b can be understood as the second field that indicates the satellite identification information corresponding to the second area through 8 bits;
  • c can be understood as the third field that indicates the network element type in the satellite corresponding to the second area through 8 bits;
  • d can be understood as the fourth field that indicates the loopback address and interface of the satellite corresponding to the second area through 8 bits.
  • the embodiment of the present application does not limit the representation method of the satellite IP address information, and it can also be represented by 128 bits of IPV6.
  • the second field of the satellite IP address information of the first satellite is updated to the second field of the satellite IP address information corresponding to the second area.
  • the takeover satellite of the second region is the second satellite, and the satellite IP address information of the second satellite may be 2.5.7.100; the takeover satellite of the first region is the first satellite, and the satellite IP address information of the first satellite may be 2.6.7.100.
  • the first satellite updates the second field "6" in the satellite address information to "5".
  • the information of the IP address pool of the first satellite is updated to the information of the IP address pool corresponding to the second area.
  • the complete IP address pool information corresponding to the second area For example, the complete IP address pool information corresponding to the second area.
  • Another example is the field corresponding to the IP address pool information that needs to be updated corresponding to the second area.
  • the IP address pool information corresponding to the second area is encoded in order.
  • the IP address pool information is represented by IPV4, that is, the IP address pool information is represented by 32 bits.
  • the encoding of the IP address pool information corresponding to the second area can be in the form of "e.f.g.h".
  • e can be understood as the fifth field indicating the orbital height and orbital identification of the satellite corresponding to the second area through 8 bits
  • f can be understood as the sixth field indicating the satellite identification information corresponding to the second area through 8 bits
  • g can be understood as the seventh field indicating the user IP address pool corresponding to the second area through 8 bits
  • h can be understood as the eighth field indicating the satellite beam or interface corresponding to the second area through 8 bits.
  • the embodiment of the present application does not limit the representation method of the IP address pool, and it can also be distinguished by 128 bits of IPV6.
  • the seventh field of the IP address pool information of the first satellite is updated to the seventh field of the IP address pool information corresponding to the second area.
  • the satellite that takes over the second area is the second satellite, and the IP address pool information corresponding to the second area can be 10.5.100.0; the satellite that takes over the first area is the first satellite, and the IP address pool information corresponding to the first area can be 10.6.101.0.
  • the first satellite updates the sixth field "6" in the satellite identifier representing the second area to "5", and updates the seventh field "101" representing the IP address pool corresponding to the second area to "100".
  • the above method also includes S404.
  • the first satellite takes over the first terminal device corresponding to the second user information.
  • the first satellite after receiving the switching request, updates the UPF configuration information of the first satellite to the UPF configuration information of the second area.
  • the first terminal device in the second area does not need to renegotiate with the first satellite to establish a connection, so that the transmission service between the first terminal device and the satellite is not interrupted, thereby improving the user experience.
  • the first satellite updates the relevant information on the first satellite to one or more of the base station network element configuration information, router network element information, user access context, user session context and routing information when the second satellite takes over the second area.
  • the above method also includes S405-406.
  • S405 The first satellite sends a first message to the second satellite.
  • the first message may be used to trigger the second satellite to delete or back up the UPF configuration information and/or the second user information corresponding to the second area.
  • the first message in FIG. 4 may specifically be a switching completion message or a takeover completion message.
  • the first message may include satellite IP address information corresponding to the second area and identification information of the first satellite.
  • the identification information of the first satellite may be determined by the identification information of the first satellite in orbit or the identification information of the link layer.
  • S406 The second satellite deletes or backs up the UPF configuration information and/or the second user information corresponding to the second area according to the first message.
  • the second satellite directly deletes the UPF configuration information and/or the second user information corresponding to the second area.
  • the second satellite backs up the UPF configuration information and/or the second user information corresponding to the second area.
  • the second satellite backs up the UPF configuration information and/or the second user information corresponding to the second area within a first duration, and deletes the UPF configuration information and/or the second user information corresponding to the second area after the first duration has passed.
  • the first duration can be implemented by a timer.
  • the transmission beam of the first satellite is a hopping beam
  • the hopping beam can completely cover the N first terminal devices in the second area, for the first satellite, there is no need to carry the identification information of the N first terminal devices in the first message, and the second satellite can delete or back up the second user information.
  • the above method also includes S407a or 407b.
  • S407a The second satellite sends a first switching completion message to the control network element.
  • the first handover completion message may include identification information of the first terminal device that has been successfully taken over, satellite IP address information corresponding to the second area, and identification information of the first satellite.
  • the first handover completion message may be used to indicate that the first satellite has successfully taken over the first terminal device and that the UPF configuration information of the first satellite has been successfully updated to the UPF configuration information corresponding to the second area.
  • S407b The first satellite sends a second switching completion message to the control network element.
  • the second switching completion message may include identification information of the first terminal device that has been successfully taken over, satellite IP address information corresponding to the second area, and identification information of the first satellite.
  • the second switching completion message may be used to indicate that the first satellite has successfully taken over the first terminal device and that the UPF configuration information of the first satellite has been successfully updated to the UPF configuration information corresponding to the second area.
  • S407a and S407b are two different implementation methods of controlling the network element to obtain the switching completion message, and the embodiments of the present application do not limit this.
  • the control network element updates the user plane information of the first terminal device from the second satellite to the first satellite according to the time slice in the ephemeris information. Specifically, the control network element updates the satellite identifier associated with the user plane information of the first terminal device from the second satellite identifier information to the first satellite identifier information according to the time slice in the ephemeris information.
  • FIG5 is an interactive schematic diagram of another communication method provided by an embodiment of the present application.
  • the interactive schematic diagram of the present application takes the first satellite, the second satellite and the control network element as the execution subjects of the interactive schematic diagram as an example to illustrate the corresponding method, but the present application does not limit the execution subjects of the interactive schematic diagram.
  • FIG4 please refer to the relevant description of FIG4, which will not be repeated here.
  • a control network element generates and sends a second switching request to a second satellite.
  • the second switching request is used to request a takeover satellite in a second area to switch from the second satellite to the first satellite.
  • the second satellite sends a first switching request to the first satellite, where the first switching request includes second user information.
  • the first satellite sends a takeover ready message #1 to the second satellite.
  • the second satellite sends a takeover ready message #2 to the control network element.
  • the takeover ready message #1 and the takeover ready message #2 are used to indicate that the first satellite is ready to take over the first terminal device corresponding to the second user information.
  • the first satellite sends a takeover ready message #3 to the control network element.
  • the takeover ready message #3 is used to indicate that the first satellite is ready to take over the first terminal device corresponding to the second user information.
  • S503a-1, S503a-2 and S503b are two different implementations of the control network element obtaining the takeover ready message of the first satellite, and the embodiment of the present application does not limit this.
  • the two differences are that the takeover ready message #1 is sent based on the satellite IP address information corresponding to the first area of the first satellite, and the takeover ready message #2 is sent based on the satellite IP address information corresponding to the second area of the second satellite.
  • Takeover ready message #3 is sent based on the satellite IP address information corresponding to the first area of the first satellite.
  • S504 Control the network element to send UPF configuration information corresponding to the second area to the first satellite.
  • the UPF configuration information corresponding to the second area can refer to the detailed description in S402, which will not be repeated here. It should also be understood that the UPF configuration information corresponding to the second area in S504 is in an independent message.
  • the first satellite sends a confirmation reception message to the control network element, where the confirmation reception message is used to indicate that the first satellite has received the UPF configuration information corresponding to the second area.
  • S506 Control the network element to send a first message to the second satellite.
  • the first message may be used to trigger the second satellite to delete or back up the UPF configuration information and/or the second user information corresponding to the second area.
  • first message in Figure 5 can also be called takeover indication message #3, and the first message is also used to instruct the first satellite to take over the first terminal device corresponding to the second user information and update the UPF configuration information of the first satellite to the UPF configuration information of the second area.
  • the second satellite receives the first message, and deletes or backs up the UPF configuration information and/or the second user information corresponding to the second area.
  • S508 The second satellite sends a second message to the control network element.
  • the second message may be used to indicate that the second satellite has deleted the UP configuration information and/or the second user information corresponding to the second area, or the second message may be used to indicate that the second satellite has backed up the UP configuration information and/or the second user information corresponding to the second area.
  • control network element sends a takeover indication message #1 to the first satellite.
  • the takeover indication message #1 is used to instruct the first satellite to take over the first terminal device corresponding to the second user information and update the UPF configuration information of the first satellite to the UPF configuration information of the second area.
  • S509b The second satellite sends a takeover indication message #2 to the first satellite.
  • the takeover indication message #2 is used to instruct the first satellite to take over the first terminal device corresponding to the second user information and update the UPF configuration information of the first satellite to the UPF configuration information of the second area.
  • the above process can be performed through the steps of S506, S507, S508 and S509a. Alternatively, the above process can also be performed through the steps of S506, S507, S508 and S509b, wherein the order of S509b and S508 is irrelevant. In this case, the first message in S506 can also be called takeover indication message #3.
  • the first satellite updates the UPF configuration information of the first satellite to the UPF configuration information corresponding to the second area, and takes over the first terminal device corresponding to the second user information.
  • S510 can refer to S403 and S404, which will not be repeated here.
  • S511 The first satellite sends a second switching completion message to the control network element.
  • the second switching completion message may include satellite IP address information corresponding to the second area and identification information of the first satellite.
  • the second switching completion message is used to indicate that the first satellite successfully takes over the first terminal device and that the UPF configuration information of the first satellite is successfully updated to the UPF configuration information corresponding to the second area.
  • S401 to S402 of Figure 4 can be regarded as a method one for obtaining the UPF configuration information corresponding to the second area
  • S403 to S408 can be regarded as a method one for the switching process
  • S501 to S504 of Figure 5 can be regarded as a method two for obtaining the UPF configuration information corresponding to the second area
  • S505 to S512 can be regarded as a method two for the switching process.
  • the methods for obtaining the UPF configuration information corresponding to the second area and the methods for the switching process in Figures 4 and 5 can be interchangeably implemented to implement the communication method of an embodiment of the present application. For example, it is implemented by steps S401 to S402 and S505 to S512, or it is implemented by S501 to S504 and S403 to S408.
  • the transmission beams of the satellites of Figures 6 and 7 are mobile beams.
  • FIG6 is an interactive schematic diagram of another communication method provided by an embodiment of the present application.
  • the interactive schematic diagram of the present application takes the first satellite, the second satellite and the control network element as the execution subjects of the interactive schematic diagram as an example to illustrate the corresponding method, but the present application does not limit the execution subjects of the interactive schematic diagram.
  • FIG4 please refer to the relevant description of FIG4, which will not be repeated here.
  • S601 Control a network element to generate and send a second switching request to a second satellite.
  • S602 Control the network element to send a second switching request to the second satellite according to the second switching request.
  • the first satellite can perform signal quality detection on the first terminal device corresponding to the second user information to take over the terminal device that meets the signal quality requirements in the first terminal device, that is, the target terminal device.
  • the first satellite may also perform signal quality detection on a first terminal device that is not in the coverage area of the first satellite, or the first satellite may also directly perform signal quality detection on the first terminal device.
  • the first satellite can determine the first terminal device that is not in the coverage area of the first satellite through the geographic coordinate information corresponding to the first terminal device in the second user information and the area range information of the second area.
  • the first area and the second area are the starting time points when the satellite signal coverage moves into the ground coverage area at a certain point in time.
  • the specific starting time may be the time point when the first satellite is fully covered or the coverage detection of most boundary points is reachable.
  • the first switching request may include the switching time point.
  • the first satellite updates the UPF configuration information of the first satellite to the UPF configuration information corresponding to the second area.
  • S604 can refer to S403, which is not elaborated here.
  • the information of the IP address pool of the first satellite is updated to the information of the IP address pool corresponding to the second area.
  • the update at this time can also be a configuration addition on the original configuration. For example, if the mobile beam of the first satellite has not completely moved out of the scope of the first area, and the second area is covered by the first satellite signal, the original configuration on the first satellite can be retained, and the information of the IP address pool corresponding to the second area is added.
  • the first satellite divides the information of the IP address pool corresponding to the second area into fine-grained divisions, and the first satellite updates part of the IP address pool information of the first satellite to part of the IP address pool information corresponding to the second area.
  • the information of the IP address pool of the second area is encoded in the form of "e.f.g.h".
  • "h” can be understood as the eighth field that indicates the satellite beam or interface corresponding to the second area through 8 bits.
  • the value range of the eighth field is [0,255]. Since the transmission beam of the first satellite is a mobile beam, the information of the IP address pool corresponding to the second area can be further divided into fine-grained parts. For example, "10.5.0.h1" represents the IP address pool information corresponding to the sub-area of the second area corresponding to the M first terminal devices taken over by the first satellite. For example, the value of h1 can be [128,255].
  • "10.6.0.h2" represents the IP address pool information corresponding to the sub-area of the first area taken over by the first satellite. For example, the value of h2 can be [0,127].
  • the UPF configuration information on the first satellite can be updated or added at the interface level in a fine-grained manner.
  • the satellite IP address information of the first satellite is updated to the satellite IP address information corresponding to the second area.
  • the first satellite sends a first message to the second satellite.
  • the first message is used to trigger the second satellite to delete or back up the UPF configuration information and/or the second user information corresponding to the second area.
  • the first message may include satellite IP address information corresponding to the second area, identification information of the first satellite, and first indication information.
  • the explanation of the satellite IP address information corresponding to the second area and the identification information of the first satellite included in the first message may refer to S405.
  • the first indication information is used to indicate the situation of the target terminal device that the first satellite successfully takes over.
  • the first indication information may include the identification information of the target terminal device. That is, when the first satellite covers a part of the second area, the first indication information may include the identification information of the target terminal device in the coverage area taken over by the first satellite.
  • the first indication information may also include the identification information of the terminal devices other than the target terminal device in the first terminal device. That is, when the first satellite covers a part of the second area, the first indication information may include the identification information of the first terminal device in the non-coverage area that is not taken over by the first satellite, that is, other terminal devices other than the non-target terminal devices in the first terminal device.
  • S606 The second satellite deletes or backs up the UPF configuration information and/or the second user information corresponding to the second area.
  • the second satellite sends a first switching completion message to the control network element, the first switching completion message including the satellite IP address information corresponding to the second area, the identification information of the first satellite and the first indication information.
  • the first switching completion message is used to indicate that the first satellite has successfully taken over the target terminal device and the UPF configuration information of the first satellite has been successfully updated to the UPF configuration information corresponding to the second area.
  • the first satellite sends a second switching completion message to the control network element, the second switching completion message including the satellite IP address information corresponding to the second area, the identification information of the first satellite and the first indication information.
  • the second switching completion message is used to indicate that the first satellite successfully takes over the target terminal device and the UPF configuration information of the first satellite is successfully updated to the UPF configuration information corresponding to the second area.
  • the control network element sends the user plane information of the target terminal device indicated by the first indication information to the user plane information of the target terminal device indicated by the first indication information according to the time slice in the ephemeris information.
  • Update from the second satellite to the first satellite Specifically, the control network element updates the satellite identifier associated with the user plane information of the target terminal device indicated by the first indication information from the second satellite identifier information to the first satellite identifier information according to the time slice in the ephemeris information.
  • FIG7 is an interactive schematic diagram of another communication method provided by an embodiment of the present application.
  • the interactive schematic diagram of the present application takes the first satellite, the second satellite and the control network element as the execution subjects of the interactive schematic diagram as an example to illustrate the corresponding method, but the present application does not limit the execution subjects of the interactive schematic diagram.
  • FIG4 please refer to the relevant description of FIG4, which will not be repeated here.
  • a control network element generates and sends a second switching request to a second satellite.
  • the second switching request is used to request a takeover satellite in a second area to switch from the second satellite to the first satellite.
  • the second satellite sends a first switching request to the first satellite, where the first switching request includes second user information.
  • the first satellite determines a target terminal device according to the second user information, where the target terminal device is a terminal device that meets the signal quality requirements among the first terminal devices.
  • the first satellite can perform signal quality detection on the first terminal device corresponding to the second user information to determine a terminal device that meets the signal quality in the first terminal device, that is, a target terminal device.
  • the target terminal device can also be understood as a terminal device that the first satellite is ready to take over or is about to take over.
  • the communication method shown in FIG. 7 is mainly applied to the case where the transmitting beam of the satellite is a mobile beam, if the transmitting beam of the first satellite is a hopping beam, the signal quality measurement can also be performed when the hopping beam does not completely cover the first terminal device in the second area.
  • the first satellite can also perform signal quality detection on the first terminal device that is not in the coverage area of the first satellite, or the first satellite can also directly perform signal quality detection on the first terminal device.
  • the first satellite can determine the first terminal device that is not in the coverage area of the first satellite through the geographic coordinate information corresponding to the first terminal device in the second user information and the area range information of the second area.
  • the first satellite sends a takeover ready message #4 to the second satellite, where the takeover ready message #4 includes first indication information.
  • the second satellite sends a takeover ready message #5 to the control network element, where the takeover ready message #5 includes the first indication information.
  • the takeover ready message #4 and the takeover ready message #5 are used to indicate that the first satellite is ready to take over the target terminal device.
  • the first indication information is used to indicate the situation of the target terminal device that the first satellite is ready to take over.
  • the first indication information may include identification information of the target terminal device. That is, when the first satellite covers part of the second area, the first indication information may include identification information of the target terminal device in the coverage area that the first satellite is ready to take over.
  • the first indication information may also include identification information of terminal devices other than the target terminal device in the first terminal device. That is, when the first satellite covers part of the second area, the first indication information may include identification information of the first terminal device in the area not covered by the first satellite, that is, other terminal devices other than the non-target terminal devices in the first terminal device.
  • the first satellite sends a takeover ready message #6 to the control network element.
  • the takeover ready message #6 is used to indicate that the first satellite is ready to take over the M first terminal devices.
  • S704a-1, S704a-2 and S704b are two different implementations of the control network element obtaining the takeover ready message of the first satellite, and the embodiment of the present application does not limit this.
  • the two differences are that the takeover ready message #4 and the takeover ready message #6 are sent based on the satellite IP address information corresponding to the first area of the first satellite, and the takeover ready message #5 is sent based on the satellite IP address information corresponding to the second area of the second satellite.
  • S705 Control the network element to send UPF configuration information corresponding to the second area to the first satellite.
  • S706 to S710b may refer to S505 to S509b and will not be elaborated here.
  • the first satellite updates the UPF configuration information of the first satellite to the UPF configuration information corresponding to the second area, and takes over the target terminal device.
  • the information of the IP address pool of the first satellite is updated to the information of the IP address pool corresponding to the second area.
  • the satellite IP address information of the first satellite is updated to the satellite IP address information corresponding to the second area.
  • the first satellite sends a second switching completion message to the control network element, the second switching completion message including the satellite IP address information corresponding to the second area and the identification information of the first satellite.
  • the second switching completion message is used to indicate that the first satellite successfully takes over the target terminal device and the UPF configuration information of the first satellite is successfully updated to the UPF configuration information corresponding to the second area.
  • S601 to S602 of Figure 6 can be regarded as a method one for obtaining the UPF configuration information corresponding to the second area
  • S603 to S608 can be regarded as a method three for the switching process
  • S701 to S705 of Figure 7 can be regarded as a method three for obtaining the UPF configuration information corresponding to the second area
  • S706 to S713 can be regarded as a method two for the switching process.
  • the methods of obtaining the UPF configuration information corresponding to the second area and the methods of the switching process in Figures 6 and 7 can be interchangeably implemented to implement the communication method of an embodiment of the present application. For example, it is implemented by steps S601 to S602 and S706 to S713, or it is implemented by S701 to S705 and S603 to S608.
  • the communication method of the satellite with ephemeris information will be described in detail below with reference to FIG. 8 to FIG. 11 .
  • the transmission beams of the satellites in FIG8 and FIG9 are hopping beams.
  • FIG8 is an interactive schematic diagram of another communication method provided by an embodiment of the present application.
  • the interactive schematic diagram of the present application takes the first satellite, the second satellite and the control network element as the execution subjects of the interactive schematic diagram as an example to illustrate the corresponding method, but the present application does not limit the execution subjects of the interactive schematic diagram.
  • FIG4 please refer to the relevant description of FIG4, which will not be repeated here.
  • S801 The second satellite sends a first switching request to the first satellite.
  • S801 may refer to the case where the second satellite includes ephemeris information in S301, and will not be repeated here.
  • the first switching request may further include UPF configuration information corresponding to the second area and second user information.
  • the optional information also included in the first switching request may refer to S301.
  • S802 to S807 may refer to S403 to S408 and will not be described in detail here.
  • FIG9 is an interactive schematic diagram of another communication method provided by an embodiment of the present application.
  • the interactive schematic diagram of the present application takes the first satellite, the second satellite and the control network element as the execution subjects of the interactive schematic diagram as an example to illustrate the corresponding method, but the present application does not limit the execution subjects of the interactive schematic diagram.
  • FIG4 please refer to the relevant description of FIG4, which will not be repeated here.
  • the second satellite sends a first switching request to the first satellite.
  • the detailed process can refer to the case where the second satellite includes ephemeris information in S301, which will not be described in detail here.
  • the first switching request may further include second user information.
  • the optional information included in the first switching request may refer to S301.
  • the first satellite sends a takeover ready message #1 to the second satellite, where the takeover ready message #1 is used to indicate that the first satellite is ready to take over the first terminal device corresponding to the second user information.
  • the takeover ready message #1 is sent based on the satellite IP address information corresponding to the first area of the first satellite.
  • the second satellite sends UPF configuration information corresponding to the second area to the first satellite.
  • the first satellite sends a first message to the second satellite, where the first message is used to trigger the second satellite to delete or back up UPF configuration information and/or second user information corresponding to the second area.
  • the first message in S904 may also be referred to as a reception confirmation message, and the reception confirmation message is used to indicate that the first satellite has received the UPF configuration information corresponding to the second region.
  • S905 The second satellite deletes or backs up the UPF configuration information and/or the second user information corresponding to the second area according to the first message.
  • the second satellite sends a takeover indication message #3 to the first satellite, where the takeover indication message #3 is used to instruct the first satellite to take over the first terminal device corresponding to the second user information, and update the UPF configuration information of the first satellite to the UPF configuration information corresponding to the second area.
  • S907 to S909 may refer to S510 to S512 and will not be elaborated here.
  • S801 of Figure 8 can be regarded as a fourth method for obtaining the UPF configuration information corresponding to the second area
  • S802 to S807 can be regarded as a first method for the switching process
  • S901 to S903 of Figure 9 can be regarded as a fifth method for obtaining the UPF configuration information corresponding to the second area
  • S904 to S909 can be regarded as a fourth method for the switching process.
  • the methods for obtaining the UPF configuration information corresponding to the second area and the methods for the switching process in Figures 8 and 9 can be interchangeably implemented to implement the communication method of an embodiment of the present application. For example, it is implemented by steps S801 and S904 to S909, or by steps S901 to S903 and S802 to S807.
  • the transmission beams of the satellites of Figures 10 and 11 are mobile beams.
  • FIG10 is an interactive schematic diagram of another communication method provided by an embodiment of the present application.
  • the interactive schematic diagram of the present application takes the first satellite, the second satellite and the control network element as the execution subjects of the interactive schematic diagram as an example to illustrate the corresponding method, but the present application does not limit the execution subjects of the interactive schematic diagram.
  • FIG4 please refer to the relevant description of FIG4, which will not be repeated here.
  • S1001 can refer to S801 and will not be elaborated here.
  • S1002 to S1007 may refer to S603 to S608 and will not be elaborated here.
  • FIG11 is an interactive schematic diagram of another communication method provided by an embodiment of the present application.
  • the interactive schematic diagram of the present application takes the first satellite, the second satellite and the control network element as the execution subjects of the interactive schematic diagram as an example to illustrate the corresponding method, but the present application does not limit the execution subjects of the interactive schematic diagram.
  • FIG4 please refer to the relevant description of FIG4, which will not be repeated here.
  • S1101 can refer to S901 and will not be described in detail here.
  • the first satellite determines a target terminal device according to the second user information, where the target terminal device is a terminal device among the first terminal devices that meets the signal quality requirement.
  • S1103 The first satellite sends a takeover ready message #4 to the second satellite, where the takeover ready message #4 includes first indication information.
  • the takeover ready message #4 is used to indicate that the first satellite is ready to take over the target terminal device.
  • the first indication information is used to indicate that the first satellite is ready to take over the target terminal device.
  • the first indication information may include identification information of the target terminal device. That is, when the first satellite covers a part of the second area, the first indication information may include identification information of the target terminal device in the area covered by the first satellite.
  • the first indication information may also include identification information of terminal devices other than the target terminal device in the first terminal device. That is, when the first satellite covers a part of the second area, the first indication information may include identification information of terminal devices in the area not covered by the first satellite.
  • S1105 to S1107 may refer to S904 to S906 and will not be elaborated here.
  • the first satellite updates the UPF configuration information of the first satellite to the UPF configuration information corresponding to the second area, and takes over the target terminal device.
  • S1109 and S1110 may refer to S1006b and S1007, and are not elaborated here.
  • S1001 of Figure 10 can be regarded as a fourth method for obtaining the UPF configuration information corresponding to the second area
  • S1002 to S1007 can be regarded as a third method for the switching process
  • S1101 to S1104 of Figure 11 can be regarded as a fifth method for obtaining the UPF configuration information corresponding to the second area
  • S1105 to S1110 can be regarded as a fourth method for the switching process.
  • the methods for obtaining the UPF configuration information corresponding to the second area and the methods for the switching process in Figures 10 and 11 can be interchangeable to implement the communication method of an embodiment of the present application. For example, it is implemented by steps S1001 and S1105 to S1110, or by steps S1101 to S1104 and S1002 to S1007.
  • the methods of obtaining the UPF configuration information corresponding to the second area in Figures 8 to 11 are all sent to the first satellite by the second satellite.
  • the first satellite can also directly update the UPF configuration information to the preset UPF configuration information corresponding to the second area according to the ephemeris information.
  • the first satellite updates the fields that need to be updated in the UPF configuration information to preset fields through a timer according to the ephemeris information.
  • the takeover satellite of the second region is the second satellite, and the satellite IP address information of the second satellite may be 2.5.7.100; the takeover satellite of the first region is the first satellite, and the satellite IP address information of the first satellite may be 2.6.7.100.
  • the first satellite updates the second field "6" in the satellite address information to "5".
  • the satellite that takes over the second area is the second satellite, and the IP address pool information corresponding to the second area can be 10.5.100.0; the satellite that takes over the first area is the first satellite, and the IP address pool information corresponding to the first area can be 10.6.101.0.
  • the first satellite updates the sixth field "6" in the satellite identifier representing the second area to "5", and updates the seventh field "101" representing the IP address pool corresponding to the second area to "100".
  • FIG12 is an interactive diagram of data transmission provided by an embodiment of the present application.
  • the interactive diagram of the present application takes the first terminal device, the first satellite, the second satellite, the remote satellite, the second terminal device and the control network element as the execution subjects of the interactive diagram as an example to illustrate the corresponding method, but the present application does not limit the execution subjects of the interactive diagram.
  • the specific form can refer to the relevant description of FIG4, which will not be repeated here. State.
  • the second satellite serves the first terminal device corresponding to the second area
  • the first satellite serves the terminal device corresponding to the first area
  • the remote satellite serves the second terminal device or network data corresponding to the corresponding area.
  • the first terminal device and the second terminal device belong to the same fifth generation cellular network technology local area network (5GLAN), which can also be called 5G local area network.
  • 5GLAN fifth generation cellular network technology local area network
  • GTP GPRS tunneling protocol
  • the first satellite After receiving the first switching request, the first satellite, S1201, obtains the UPF configuration information and the second user information corresponding to the second area. S1202, the first satellite updates the UPF configuration information of the first satellite to the UPF configuration information corresponding to the second area.
  • the UPF configuration information at this time includes the IP address pool and the loopback interface of the satellite UPF network element, as well as the IP address information of other interfaces used in the topology. It can be understood that the configuration of the first satellite completely mirrors the original configuration of the second satellite.
  • the first satellite takes over the target terminal device.
  • the first satellite can take over different numbers of target terminal devices according to different beam types.
  • the target terminal device can be the first terminal device, or the target terminal device is a terminal device in the first terminal device that meets the signal quality requirements.
  • the first satellite can also perform signal quality detection on the requested first terminal device to determine the target terminal device.
  • S1203 may specifically be that the first satellite maintains user context information of the target terminal device and configures wireless resources for the target terminal device. Specifically, the first satellite configures corresponding wireless resources for the target terminal device according to the wireless resource information corresponding to the first terminal device included in the second user information, for example, a frequency band or frequency point of the RRC resource.
  • the first satellite completely replicates the wireless resource allocation, which can further ensure that when satellite switching occurs, the corresponding first terminal device performs service transmission without perceiving the satellite switching process, thereby improving user experience.
  • the first switching request may also include the tunnel identification information corresponding to the second satellite and/or the satellite IP address information of the remote satellite.
  • the first satellite also needs to add the tunnel identification corresponding to the second satellite and/or the satellite IP address information of the remote satellite. That is, the first satellite copies and saves the tunnel identification corresponding to the second satellite and/or the satellite IP address information of the remote satellite.
  • the time point at which the first satellite in S1201 obtains the UPF configuration information and the second user information corresponding to the second area may be before time T2. That is, before the time period (e.g., time period T1 to T2) for serving the relevant terminal devices in the first area ends, the first satellite may obtain in advance the UPF configuration information and the second user information corresponding to the second area to be served. More detailed steps of S1201 to S1203 have been described in detail in FIGS. 4 to 11, and will not be repeated here.
  • S1204 The remote satellite addresses the opposite satellite of the current tunnel according to the satellite IP address information of the second area.
  • the satellite IP address information of the satellite can be changed, for the remote satellite, the satellite IP address information when the second satellite serves the first terminal device can be used to address the opposite satellite of the tunnel. At this time, the current opposite satellite is the first satellite. Therefore, the remote satellite cannot perceive the switching process of the opposite satellite of the tunnel.
  • the first satellite sends a second switching completion message to the control network element.
  • the control network element can refer to S408, which will not be described in detail here.
  • the above communication method is for the case where the IP address information of the satellite can be changed.
  • the following will describe in detail the communication method when the satellite switches when the IP address information of the satellite cannot be changed in conjunction with Figure 13.
  • FIG13 is an interactive schematic diagram of another communication method provided by an embodiment of the present application.
  • the interactive schematic diagram of the present application takes the first terminal device, the first satellite, the second satellite, the remote satellite, the second terminal device/data network and the control network element as the execution subjects of the interactive schematic diagram as an example to illustrate the corresponding method, but the present application does not limit the execution subjects of the interactive schematic diagram.
  • the specific form can refer to the relevant description of FIG4, which will not be repeated here.
  • the first terminal device and the second terminal device belong to the same 5GLAN scenario, and a GTP tunnel exists between the second satellite to which the first terminal device belongs and the remote satellite to which the second terminal device belongs.
  • a UPF network element is deployed on the satellite.
  • the second satellite and the remote satellite can also be referred to as anchor satellites, and the UPF network elements deployed on the second satellite and the remote satellite can also be referred to as anchor UPF network elements.
  • the embodiment of the present application does not limit the names of the second satellite and the remote satellite.
  • service transmission between the first terminal device and the second terminal device is achieved through the tunnel between the second satellite and the remote satellite.
  • the first satellite After determining that the takeover satellite of the second area is switched from the second satellite to the first satellite, S1301, the first satellite obtains the UPF configuration information and the third user information corresponding to the second area.
  • the UPF configuration information includes the IP address pool information allocated to the terminal user, but does not include the UPF Interface IP address information of the NE.
  • the UPF configuration information corresponding to the second area does not include the satellite IP address information corresponding to the second area.
  • the UPF configuration information corresponding to the second area in FIG. 13 may include the IP address pool information corresponding to the second area.
  • the UPF configuration information corresponding to the second area in FIG. 13 may also include other UPF configuration information in addition to the satellite IP address information corresponding to the second area.
  • the third user information may include one or more of the identification information of the first terminal device, the identification information of the second terminal device, the session identification information, the tunnel identification information, the wireless resource information, the NGAP identification list and the routing table entry.
  • the first terminal device may include one or more, and the embodiment of the present application does not limit the number of the first terminal devices.
  • the second terminal device may include one or more, and the embodiment of the present application does not limit the number of the second terminal devices.
  • the wireless resource information may be an RRC resource.
  • the UPF configuration information may further include inter-satellite interface information, where the inter-satellite interface information is used to indicate the next-jump-out interface information from the first satellite to the remote satellite.
  • the next-jump-out interface information from the second satellite to the remote satellite is interface number n
  • the next-jump-out interface information from the first satellite to the remote satellite is interface number m.
  • the session-related information e.g., session identifier
  • the session-related information in the third user information can skip the tunnel identifier information and be directly mapped to the RRC resource. Since the UPF network elements and base stations are deployed on the satellite at the same time, there is no need for communication between the onboard UPF network elements and the base stations through a tunnel.
  • time point at which the first satellite acquires the UPF configuration information and the third user information corresponding to the second area in S1301 may be before time T2.
  • the second satellite or the control network element can determine that the takeover satellite of the second area is about to switch from the second satellite to the first satellite.
  • the way in which the first satellite in Figure 13 obtains the UPF configuration information and the third user information corresponding to the second area can refer to the way in which the first satellite obtains the UPF configuration information and the second user information corresponding to the second area in Figures 4 to 11.
  • the difference between Figure 13 and Figures 4 to 11 is that the UPF configuration information corresponding to the second area in Figure 13 does not include the satellite IP address information corresponding to the second area.
  • the second satellite sends tunnel identification information corresponding to the tunnel between the second satellite and the remote satellite to the first satellite.
  • the first satellite updates the IP address pool information of the first satellite to the IP address pool information corresponding to the second area.
  • S1302 may refer to the corresponding part about updating the IP address pool in S403.
  • the target terminal device taken over by the first satellite may include the first terminal device corresponding to the third user information, that is, all the first terminal devices corresponding to the second area or all the first terminal devices with business transmission in the second area.
  • the target terminal device taken over by the first satellite may also include the terminal devices that meet the signal quality requirements among the first terminal devices. The difference in the number of target terminal devices taken over by the first satellite depends on whether the first satellite measures the signal quality of the first terminal device.
  • the first satellite maintains a user context of the target terminal device and configures wireless resources for the target terminal device.
  • the first satellite performs routing table protection, session information maintenance, etc. for the target terminal device, and the first satellite allocates wireless resources, such as RRC resources, to the target terminal device.
  • wireless resources such as RRC resources
  • the second satellite sends first information to the remote satellite, the first information is used to instruct the target terminal device to switch the anchor satellite from the second satellite to the first satellite, and the first information includes satellite IP address information of the first satellite and identification information of the target terminal device.
  • the second satellite can obtain the satellite IP address information of the first satellite from the control network element, for example, by carrying it in the first switching request sent by the control network element to the second satellite.
  • the second satellite can also determine the satellite IP address information of the first satellite based on the ephemeris information.
  • the embodiment of the present application does not limit the second satellite to obtain the satellite IP address information of the first satellite.
  • the identification information of the target terminal device may be a loopback interface identifier corresponding to the target terminal device.
  • the satellite IP address information in the communication method shown in Figure 13 cannot be changed. Since there is a tunnel between the second satellite and the remote satellite, the refresh information of the time slices on different satellites is based on different orbital positions. Therefore, when a satellite switch occurs, the remote satellite needs to be informed that the satellite IP address information serving the first terminal device has changed.
  • the first satellite sends first information to the remote satellite, the first information is used to instruct the target terminal device to switch the anchor satellite from the second satellite to the first satellite, and the first information includes satellite IP address information of the second satellite and identification information of the target terminal device.
  • the first satellite sends second information to the control network element, the second information is used to instruct the anchor satellite of the target terminal device to switch from the second satellite to the first satellite, and the second information includes satellite IP address information of the second satellite and identification information of the target terminal device.
  • control network element can identify the satellite IP address information of the first satellite according to the second information.
  • control network element switches the service satellite corresponding to the target terminal device from the second satellite to the first satellite.
  • control network element performs access and session information refresh based on the time slice of the first satellite, and sends the user interface information of the target terminal device to the
  • the satellite IP address information associated with the information is updated from the satellite IP address information of the second satellite to the satellite IP address information of the first satellite.
  • the control network element sends first information to the remote satellite, the first information is used to instruct the anchor satellite of the target terminal device to switch from the second satellite to the first satellite, the first information includes satellite IP address information of the first satellite, satellite IP address information of the second satellite and identification information of the target terminal device.
  • the first satellite can also send the first information to other remote satellites through any one of S1304a, S1304b, S1304c-1 and S1304c-2.
  • the first information may also include tunnel identification information corresponding to the tunnel between the second satellite and the remote satellite.
  • the first information may also include a real outgoing interface corresponding to the intersatellite link of the first satellite, for example, if the satellite interface configuration is orderly, it may be the real outgoing interface.
  • the remote satellite determines that data is transmitted between the first terminal device and the second terminal device via the remote satellite and the first satellite.
  • the remote satellite when the remote satellite receives the first information from the second satellite (i.e., S1304a), and the first information carries the satellite IP address information of the first satellite, the remote satellite can firstly identify that the first information comes from the second satellite, and secondly, the satellite IP address information of the first satellite carried by the first information can indicate that the anchor satellite of the target terminal device is switched from the second satellite to the first satellite, thereby determining that data is transmitted between the first terminal device and the second terminal device through the remote satellite and the first satellite.
  • the remote satellite when the remote satellite receives the first information (i.e., 1304b) from the first satellite, and the first information carries the satellite IP address information of the second satellite, the remote satellite can firstly identify that the first information comes from the first satellite, and secondly, the satellite IP address information of the second satellite carried by the first information can indicate that the anchor satellite of the target terminal device is switched from the second satellite to the first satellite, thereby determining that data is transmitted between the first terminal device and the second terminal device via the remote satellite and the first satellite.
  • the first information i.e., 1304b
  • the remote satellite can firstly identify that the first information comes from the first satellite, and secondly, the satellite IP address information of the second satellite carried by the first information can indicate that the anchor satellite of the target terminal device is switched from the second satellite to the first satellite, thereby determining that data is transmitted between the first terminal device and the second terminal device via the remote satellite and the first satellite.
  • the remote satellite when the remote satellite receives the first information (i.e., S1304c-1 and S1304c-2) from the control network element, and the first information carries the satellite IP address information of the first satellite and the satellite IP address information of the second satellite, the remote satellite can determine, based on the first information, that the anchor satellite of the target terminal device is switched from the second satellite to the first satellite, and further determine that data is transmitted between the first terminal device and the second terminal device through the remote satellite and the first satellite.
  • the first information i.e., S1304c-1 and S1304c-2
  • the remote satellite can determine, based on the first information, that the anchor satellite of the target terminal device is switched from the second satellite to the first satellite, and further determine that data is transmitted between the first terminal device and the second terminal device through the remote satellite and the first satellite.
  • a new tunnel is established between the first satellite and the remote satellite according to the satellite IP address information of the first satellite, and the new tunnel is used to transmit data between the first terminal device and the second terminal device.
  • the destination address information of the new tunnel endpoint of the remote satellite is updated to the identification information or IP address information of the first satellite.
  • the remote satellite updates the intersatellite link/interface to the outbound interface to the first satellite.
  • the tunnel identifier corresponding to the new tunnel can be new identifier information, or the old identifier information between the remote satellite and the second satellite can be used, which is not limited in the embodiment of the present application.
  • the remote satellite sends third information to the first satellite.
  • the third information may include fourth user information corresponding to the second terminal device served by the remote satellite, identification information of the remote satellite, or satellite IP address information.
  • the fourth user information may include one or more of the identification information of the first terminal device, the identification information of the second terminal device, the session identification information, the tunnel identification information, the wireless resource information, the NGAP identification list and the routing table entry.
  • the first satellite adds information related to the remote satellite to the target terminal device according to the third information.
  • the first satellite adds identification information of the remote satellite or IP address information of the remote satellite to the target terminal device according to the third information.
  • the first satellite adds tunnel identification information of the remote satellite service to the target terminal device according to the third information.
  • identification information and/or IP address information of the second terminal device is also included.
  • the first satellite updates the inter-satellite interface to number m according to the inter-satellite interface information.
  • the first satellite does not need additionally indicated inter-satellite interface information, and can realize inter-satellite data transmission between the next hop first satellite and the remote satellite. If the inter-satellite interface information of the first satellite and the second satellite is inconsistent, the first satellite needs the change information indicating the inter-satellite interface in the UPF configuration information, so as to realize inter-satellite data transmission between the next hop first satellite and the remote satellite.
  • the first satellite sends a third switching completion message to the control network element.
  • the third switching completion message is used to instruct the takeover satellite in the second area to switch from the second satellite to the first satellite.
  • the first satellite after taking over the target terminal device, the first satellite sends a third switching completion message to the control network element after a second period of time.
  • the first satellite after the first satellite receives the third information from the remote satellite, the first satellite sends a third switching completion message to the control network element.
  • FIG14 is a schematic diagram of a communication device 1400 provided in an embodiment of the present application.
  • the device 1400 may include a processing unit 1420, which is used to perform data processing.
  • the device 1400 may also include a transceiver unit 1410, which may implement corresponding communication functions, and the transceiver unit 1410 may also be referred to as a communication interface or a communication unit or an interface unit.
  • a communication interface or a communication unit or an interface unit may also be referred to as a communication interface or a communication unit or an interface unit.
  • the device 1400 may further include a storage unit, which may be used to store instructions and/or data, and the processing unit 1420 may read the instructions and/or data in the storage unit so that the device implements the aforementioned method embodiment.
  • a storage unit which may be used to store instructions and/or data
  • the processing unit 1420 may read the instructions and/or data in the storage unit so that the device implements the aforementioned method embodiment.
  • the device 1400 can be used to execute the actions performed by the first satellite in the above method embodiment.
  • the device 1400 can be a communication device or a component that can be configured in a communication device.
  • the transceiver unit 1410 is used to execute the operations related to the transmission and reception of the first satellite in the above method embodiment
  • the processing unit 1420 is used to execute the operations related to the processing of the first satellite in the above method embodiment.
  • the device 1400 is used to execute the actions performed by the first satellite in the method embodiments shown in Figures 3 to 13 above.
  • the execution subject can be a chip, a chip system or a processor that supports the first satellite to implement the corresponding method, and can also be a logic module or software that can implement all or part of the functions of the first satellite.
  • the transceiver unit 1410 is used to receive a first switching request from the second satellite, where the first switching request is used to request that the takeover satellite in the second area be switched from the second satellite to the first satellite.
  • the processing unit 1420 is configured to update the UPF configuration information of the first satellite to the UPF configuration information corresponding to the second area.
  • the communication device 1400 is used to execute the actions performed by the second satellite in the method embodiments shown in Figures 3 to 13 above.
  • the execution subject can be a chip, a chip system or a processor that supports the second satellite to implement the corresponding method, and can also be a logic module or software that can implement all or part of the functions of the second satellite.
  • the transceiver unit 1410 is used to send a first switching request to the first satellite, where the first switching request is used to request the takeover satellite in the second area to switch from the second satellite to the first satellite.
  • the communication device 1400 is used to execute the actions performed by the control network element in the method embodiments shown in Figures 3 to 13 above.
  • the execution subject can be a chip, a chip system or a processor that supports the control network element to implement the corresponding method, and can also be a logic module or software that can realize all or part of the control network element functions.
  • the transceiver unit 1410 is used to send a second switching request to the second satellite, where the second switching request is used to request the takeover satellite of the second area to switch from the second satellite to the first satellite.
  • the processing unit 1420 is used to trigger the second satellite to determine the first switching request, where the first switching request is used to request the takeover satellite of the second area to switch from the second satellite to the first satellite.
  • the communication device 1400 is used to execute the actions performed by the remote satellite in the method embodiment shown in Figure 13 above.
  • the execution subject can be a chip, a chip system or a processor that supports the remote satellite to implement the corresponding method, and can also be a logic module or software that can implement all or part of the remote satellite functions.
  • the transceiver unit 1410 is used to receive first information, where the first information is used to instruct the anchor satellite of the target terminal device to switch from the second satellite to the first satellite, wherein the first terminal device communicates with the second terminal device via the anchor satellite and the remote satellite, and the first information
  • the processing unit 1420 is configured to send first data to the first satellite according to the first information, wherein the first data is data sent by the second terminal device to the first terminal device.
  • the processing unit 1420 in the above embodiment may be implemented by at least one processor or processor-related circuits.
  • the transceiver unit 1410 may be implemented by a transceiver or a transceiver-related circuit.
  • the storage unit may be implemented by at least one memory.
  • FIG. 15 is a schematic structural diagram of a communication device 1500 provided in an embodiment of the present application.
  • the embodiment of the present application further provides a communication device 1500.
  • the device 1500 includes a processor 1510, the processor 1510 is coupled to a memory 1520, the memory 1520 is used to store computer programs or instructions and/or data, and the processor 1510 is used to execute the computer programs or instructions and/or data stored in the memory 1520, so that the method in the above method embodiment is executed.
  • the device 1500 includes one or more processors 1510.
  • the device 1500 may further include a memory 1520 .
  • the memory 1520 included in the device 1500 may be one or more.
  • the memory 1520 may be integrated with the processor 1510 or provided separately.
  • the device 1500 may further include a transceiver 1530, and the transceiver 1530 is used for receiving and/or sending signals.
  • the processor 1510 is used to control the transceiver 1530 to receive and/or send signals.
  • the device 1500 is used to implement the operations performed by the first satellite, the second satellite, the control network element or the remote satellite in the above method embodiment.
  • the processor 1510 is used to implement processing-related operations performed by the first satellite, the second satellite, the control network element or the remote satellite in the above method embodiments
  • the transceiver 1530 is used to implement transceiver-related operations performed by the first satellite, the second satellite, the control network element or the remote satellite in the above method embodiments.
  • FIG16 is a schematic diagram of a chip system 1600 provided in an embodiment of the present application, as shown in FIG16.
  • the chip system 1600 (or also referred to as a processing system) includes a logic circuit 1610 and an input/output interface (input/output interface) 1620, and the logic circuit is used to couple with the input interface, and transmit data parameters through the input/output interface to execute the method in the above method embodiment.
  • the device installed with the chip system 1600 can implement the method and function of the embodiment of the present application.
  • the logic circuit 1610 can be a processing circuit in the chip system 1600, which realizes the control of the device installed with the chip system 1600, and can also be coupled to a storage unit to call the instructions in the storage unit so that the device can implement the method and function of the embodiment of the present application.
  • the input/output interface 1620 can be an input/output circuit in the chip system 1600, which outputs the information processed by the chip system 1600, or inputs the data or signaling information to be processed into the chip system 1600 for processing.
  • the chip system 1600 is used to implement the operations performed by the communication device (such as the first satellite, the second satellite, the control network element or the remote satellite) in the above method embodiment.
  • the communication device such as the first satellite, the second satellite, the control network element or the remote satellite
  • the logic circuit 1610 is used to implement the processing-related operations performed by the first satellite, the second satellite, the control network element or the remote satellite in the above method embodiments
  • the input/output interface 1620 is used to implement the sending and receiving-related operations performed by the first satellite, the second satellite, the control network element or the remote satellite in the above method embodiments.
  • An embodiment of the present application also provides a computer-readable storage medium on which computer instructions for implementing the method executed by a communication device (such as a first satellite, a second satellite, a control network element or a remote satellite) in the above method embodiment are stored.
  • a communication device such as a first satellite, a second satellite, a control network element or a remote satellite
  • the computer when the computer program is executed by a computer, the computer can implement the method performed by the communication device (such as the first satellite, the second satellite, the control network element or the remote satellite) in the above method embodiment.
  • the communication device such as the first satellite, the second satellite, the control network element or the remote satellite
  • An embodiment of the present application also provides a computer program product comprising instructions, which, when executed by a computer, enables the computer to implement the method performed by a communication device (such as a first satellite, a second satellite, a control network element or a remote satellite) in the above method embodiment.
  • a communication device such as a first satellite, a second satellite, a control network element or a remote satellite
  • An embodiment of the present application also provides a communication system, which includes at least one of the first satellite, the second satellite, the control network element and the remote satellite mentioned above.
  • processors mentioned in the embodiments of the present application may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASICs), or a processor.
  • a general purpose processor may be a microprocessor or any conventional processor.
  • the memory mentioned in the embodiments of the present application may be a volatile memory and/or a non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory.
  • the volatile memory may be a random access memory (RAM).
  • a RAM may be used as an external cache.
  • RAM may include the following forms: static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct rambus RAM (DR RAM).
  • SRAM static RAM
  • DRAM dynamic RAM
  • SDRAM synchronous DRAM
  • DDR SDRAM double data rate SDRAM
  • ESDRAM enhanced SDRAM
  • SLDRAM synchronous link DRAM
  • DR RAM direct rambus RAM
  • the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) can be integrated into the processor.
  • memory described herein is intended to include, but is not limited to, these and any other suitable types of memory.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.
  • Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be 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 distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art.
  • the computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, and other media that can store program codes.

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  • Aviation & Aerospace Engineering (AREA)
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Abstract

La présente demande concerne un procédé et un appareil de communication, le procédé étant appliqué à un premier satellite, et le premier satellite étant intégré à une fonction de plan utilisateur. Le procédé consiste à : recevoir une première demande de transfert en provenance d'un second satellite, la première demande de transfert étant utilisée pour demander le transfert d'un satellite de prise en charge d'une seconde région depuis le second satellite vers un premier satellite ; et mettre à jour des informations de configuration UPF du premier satellite en informations de configuration UPF correspondant à la seconde région. De cette manière, il peut être garanti qu'un service de transmission entre un satellite commuté et un dispositif terminal n'est pas interrompu, ce qui permet d'améliorer l'expérience de l'utilisateur.
PCT/CN2024/124678 2023-10-18 2024-10-14 Procédé et appareil de communication Pending WO2025082309A1 (fr)

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CN120416958A (zh) * 2025-06-16 2025-08-01 荣耀终端股份有限公司 一种通信方法及装置
CN120729402B (zh) * 2025-08-29 2025-11-04 中国星网网络创新研究院有限公司 一种基于中心竞争裁决的星间纳管方法

Citations (4)

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CN103546928A (zh) * 2012-07-11 2014-01-29 电信科学技术研究院 一种承载管理方法、装置及系统
CN116347534A (zh) * 2021-12-24 2023-06-27 华为技术有限公司 一种卫星切换方法、装置、存储介质和芯片系统
US20230247506A1 (en) * 2020-10-23 2023-08-03 Apple Inc. Modified handover procedures for earth fixed and earth mobile beams
CN116866940A (zh) * 2022-03-27 2023-10-10 华为技术有限公司 卫星通信方法和装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103546928A (zh) * 2012-07-11 2014-01-29 电信科学技术研究院 一种承载管理方法、装置及系统
US20230247506A1 (en) * 2020-10-23 2023-08-03 Apple Inc. Modified handover procedures for earth fixed and earth mobile beams
CN116347534A (zh) * 2021-12-24 2023-06-27 华为技术有限公司 一种卫星切换方法、装置、存储介质和芯片系统
CN116866940A (zh) * 2022-03-27 2023-10-10 华为技术有限公司 卫星通信方法和装置

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