WO2024045543A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

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Publication number
WO2024045543A1
WO2024045543A1 PCT/CN2023/080626 CN2023080626W WO2024045543A1 WO 2024045543 A1 WO2024045543 A1 WO 2024045543A1 CN 2023080626 W CN2023080626 W CN 2023080626W WO 2024045543 A1 WO2024045543 A1 WO 2024045543A1
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WIPO (PCT)
Prior art keywords
trp
terminal device
information
communication
destination
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PCT/CN2023/080626
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English (en)
Chinese (zh)
Inventor
汪宇
Original Assignee
华为技术有限公司
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Publication date
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Publication of WO2024045543A1 publication Critical patent/WO2024045543A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present application relates to the field of communication, and in particular, to a communication method and device.
  • the update process of the system message block is performed within a specific time period, which can be represented by the broadcast control channel (BCCH) modification period.
  • the boundary of the BCCH modification period is related to the frame number of the system frame and the number of system frames.
  • the terminal device can start the BCCH modification period and update the system message block at intervals of an integer number of system frames.
  • NTN non-terrestrial network
  • TRP transmission reception point
  • Embodiments of the present application provide a communication method and device, which can improve the success rate of receiving system message blocks, thereby improving communication reliability.
  • the first aspect is to provide a communication method.
  • the communication method includes: the terminal device obtains the first information.
  • the first information includes a measurement timing configuration SMTC based on synchronization signals and broadcast channel blocks corresponding to each TRP in the plurality of TRPs, and a time offset of each SMTC. Multiple TRPs correspond to at least one logical cell, and the SMTC time offset corresponds to the terminal device.
  • the SMTC time offset is used to instruct the terminal device to obtain the synchronization signal and the size of the offset time of the broadcast channel block SSB.
  • the terminal device receives the SSB corresponding to each TRP in the plurality of TRPs according to the first information.
  • the SSB corresponding to a TRP is used to determine the signal quality of the TRP.
  • the terminal device receives the system message block of the destination TRP according to the SSB corresponding to each TRP.
  • the destination TRP is a TRP whose signal quality is greater than or equal to the signal quality threshold among multiple TRPs.
  • the terminal device can obtain the first information, and receive the SMTC corresponding to each of the multiple TRPs and the time offset of the SMTC according to the SMTC corresponding to each of the multiple TRPs in the first information.
  • SSB and then receive the system message block of the destination TRP.
  • the multiple TRPs correspond to at least one logical cell
  • the target TRP is a TRP whose signal quality is greater than or equal to the signal quality threshold among the multiple TRPs.
  • SSBs can be received at different times for different TRPs, so that the time of receiving SSBs matches the TRPs, thereby improving the success rate of receiving system message blocks and improving communication reliability.
  • the time offset of the SMTC corresponding to the destination TRP may be related to at least one of the following: the time offset between the system frame of the destination TRP and the system frame of the TRP where the terminal device currently resides, the terminal The delay between the device and the TRP where the terminal device currently resides, and the delay between the terminal device and the destination TRP Delay related.
  • the time offset of the SMTC corresponding to the destination TRP can be determined by combining the time offset of the system frames between different TRPs and the delay between the terminal device and the different TRPs, thereby reducing the time delay and the time offset of the system frame.
  • the impact of shift on receiving SSB is improved to improve communication reliability.
  • offset is the time offset of the SMTC corresponding to the destination TRP
  • d2 is the delay between the terminal device and the destination TRP
  • d1 is the delay between the terminal device and the TRP where the terminal device currently resides
  • F2 is the destination TRP.
  • F1 is the starting time of the system frame of the TRP currently resident by the terminal device.
  • the terminal device receives the system message block of the destination TRP according to the SSB corresponding to each TRP, which may include: If the distance between the TRP where the terminal device currently resides and the terminal device is greater than or equal to the first distance threshold , and/or, the distance between the destination TRP and the terminal device is less than or equal to the second distance threshold, then the terminal device receives the system message block of the destination TRP according to the SSB corresponding to the destination TRP.
  • the physical broadcast channel PBCH of the SSB corresponding to the destination TRP carries the first indication information.
  • the method provided in the first aspect may further include: the terminal device receiving the first indication information.
  • the first indication information is carried on the first control resource set corresponding to the destination TRP.
  • the first indication information is used to indicate whether the first system message block is updated, and the first system message block is used for the terminal device to access the target TRP.
  • the PBCH of the SSB corresponding to the destination TRP may carry the second indication information.
  • the method provided in the first aspect may further include: the terminal device receiving the second indication information.
  • the second indication information is carried on the second control resource set corresponding to the destination TRP.
  • the second indication information is used to indicate whether the second system message block is updated. In this way, by indicating whether the second system message block is updated through the PBCH or the second control resource set, the second system message block can be updated separately, and the update status of the second system message block can be avoided from affecting the update status of other system message blocks, for example , when the second system message block is updated, the second system message block can be updated separately, thereby reducing the overhead of the terminal device and improving the operating efficiency.
  • the second system message block may include one or more of the following information about the destination TRP: ephemeris information of the satellite corresponding to the destination TRP, reference point position information of the satellite corresponding to the destination TRP, or destination The time the TRP provides services to the terminal device.
  • the method provided in the first aspect may further include: the terminal device receiving the second information.
  • the second information is carried in the radio resource control reconfiguration message and/or non-access stratum signaling.
  • the second information can be updated separately, and the update status of the second information can be prevented from affecting the update status of other system message blocks. For example, When the second information is updated, the second information is updated separately, thereby reducing the cost of the terminal device and improving the operating efficiency.
  • the second information may include one or more of the following information: information for TRP reselection, earthquake and tsunami warning system, commercial mobile warning service warning message, or global positioning system time information.
  • the PBCH of the SSB corresponding to the destination TRP may carry third indication information, and the third indication information is used to indicate the time-frequency resources of the paging search space corresponding to the terminal device.
  • the method provided in the first aspect may further include: the terminal device receiving fourth indication information.
  • the fourth indication information is used to indicate the third control resource set.
  • the terminal device determines a paging search space corresponding to the terminal device according to the first mapping relationship and the third control resource set.
  • the first mapping relationship is used to indicate the corresponding relationship between the control resource set and the paging search space.
  • the frequency domain range of the control resource set corresponding to the paging search space includes the frequency domain range of the paging search space.
  • the terminal equipment determines the paging search space according to the PBCH or the third control resource set, which can avoid demodulating the first system message block to determine the paging search space, which can reduce the processing complexity of the terminal equipment, thereby further improving communication efficiency.
  • the method provided in the first aspect may further include: obtaining the movement distance of the terminal device. If the movement distance is greater than the third distance threshold, the registration area update process is executed.
  • the second aspect is to provide a communication method.
  • the communication method includes: the first TRP acquires first information and sends the first information to the terminal device.
  • the first information includes the measurement timing configuration SMTC based on synchronization signals and broadcast channel blocks corresponding to each TRP in the plurality of TRPs and the time offset of the SMTC.
  • the plurality of TRPs correspond to at least one logical cell, and the time offset of the SMTC.
  • the time offset of SMTC is used to indicate the offset time of the terminal equipment to obtain the synchronization signal and the broadcast channel block SSB.
  • the first TRP is the TRP where the terminal device currently resides among multiple TRPs.
  • the time offset of the SMTC corresponding to a TRP can be related to one or more of the following: the time offset between the system frame of the TRP and the system frame of the TRP where the terminal device currently resides, The delay between the terminal device and the TRP where the terminal device currently resides is related to the delay between the terminal device and the destination TRP.
  • offset is the time offset of the SMTC corresponding to a TRP
  • d2 is the delay between the terminal device and the destination TRP
  • d1 is the delay between the terminal device and the TRP where the terminal device currently resides
  • F2 is the destination TRP.
  • F1 is the starting time of the system frame of the TRP currently resident by the terminal device.
  • the third aspect is to provide a communication method.
  • the communication method includes: the destination TRP sends the SSB corresponding to the destination TRP.
  • the destination TRP is a TRP whose signal quality is greater than or equal to the signal quality threshold among multiple TRPs.
  • the destination TRP sends the system message block of the destination TRP to the terminal device.
  • the first indication information may be carried on the physical broadcast channel PBCH of the SSB corresponding to the destination TRP.
  • the method provided in the third aspect may further include: the destination TRP sending the first indication information to the terminal device.
  • the first indication information is carried on the first control resource set corresponding to the destination TRP.
  • the first indication information is used to indicate whether the first system message block is updated, and the first system message block is used for the terminal device to access the target TRP.
  • the PBCH of the SSB corresponding to the destination TRP may carry the second indication information.
  • the method provided in the third aspect may further include: the destination TRP sending second indication information to the terminal device.
  • the second indication information is carried on the second control resource set corresponding to the destination TRP.
  • the second indication information is used to indicate whether the second system message block is updated.
  • the second system message block may include one or more of the following information of the destination TRP: ephemeris information of the satellite corresponding to the destination TRP, reference point position information of the satellite corresponding to the destination TRP, or information provided by the destination TRP for the terminal device. Service time.
  • the method provided in the third aspect may also include: the destination TRP sending second information to the terminal device.
  • the second information is carried in the radio resource control reconfiguration message and/or non-access stratum signaling.
  • the second information may include one or more of the following information: information for TRP access, information for TRP reselection, earthquake and tsunami warning system, commercial mobile warning service warning message, or global positioning system time information.
  • the PBCH of the SSB corresponding to the destination TRP may carry third indication information, and the third indication information is used to indicate the time-frequency resources of the paging search space corresponding to the terminal device.
  • the method provided in the third aspect may further include: sending fourth indication information to the terminal device.
  • the fourth indication information is used to indicate the third control resource set.
  • the first mapping relationship is used to indicate the corresponding relationship between the control resource set and the paging search space.
  • the frequency domain range of the control resource set corresponding to the paging search space includes the frequency domain range of the paging search space.
  • the fourth aspect is to provide a communication method.
  • the communication method includes: the terminal device receives sixth indication information.
  • the sixth indication information is used to indicate the fourth control resource set.
  • the terminal device determines a paging search space corresponding to the terminal device according to the second mapping relationship and the fourth control resource set.
  • the second mapping relationship is used to indicate the corresponding relationship between the control resource set and the paging search space.
  • the frequency domain range of the control resource set corresponding to the paging search space includes the frequency domain range of the paging search space.
  • the terminal device can determine the paging search space without demodulating the first system message block, thereby reducing the workload of the terminal device and improving communication efficiency.
  • the terminal device can receive paging from multiple satellites, thereby further improving communication efficiency.
  • the communication method of the fourth aspect may further include: the terminal device receiving control information of the paging message on the paging search space corresponding to the terminal device.
  • the fifth aspect provides a communication method.
  • the communication method includes: the third satellite acquires sixth indication information.
  • the third satellite sends the sixth instruction information.
  • the sixth indication information is used to indicate the fourth control resource set.
  • the fourth control resource set is used to determine the time-frequency resources of the paging search space corresponding to the terminal device.
  • the sixth aspect is to provide a communication method.
  • the communication method includes: a terminal device receives a physical broadcast channel PBCH from a satellite.
  • the PBCH carries seventh indication information, and the seventh indication information is used to indicate the time-frequency resources of the paging search space corresponding to the terminal equipment.
  • the terminal device receives the control information of the paging message according to the time-frequency resources of the paging search space corresponding to the terminal device.
  • the terminal device determines the paging search space without demodulating the first system message block, thereby reducing the workload of the terminal device and improving communication efficiency.
  • the terminal device can receive paging from multiple satellites, thereby further improving communication efficiency.
  • the seventh aspect provides a communication method.
  • the communication method includes: the fifth satellite acquires seventh indication information.
  • the seventh indication information is used to indicate time-frequency resources of the paging search space corresponding to the terminal device.
  • the fifth satellite transmits the physical broadcast channel PBCH.
  • the PBCH carries seventh indication information.
  • a communication device includes: a processing module and a transceiver module.
  • the processing module is used to obtain the first information.
  • the first information includes a measurement timing configuration SMTC based on synchronization signals and broadcast channel blocks corresponding to each TRP in the plurality of TRPs, and a time offset of each SMTC. Multiple TRPs correspond to at least one logical cell, and the SMTC time offset corresponds to the communication device.
  • the SMTC time offset is used to instruct the communication device to obtain the synchronization signal and the size of the offset time of the broadcast channel block SSB.
  • the transceiver module is configured to receive the SSB corresponding to each TRP in the plurality of TRPs according to the first information.
  • the SSB corresponding to a TRP is used to determine the signal quality of the TRP.
  • the transceiver module is used to receive the system message block of the destination TRP according to the SSB corresponding to each TRP.
  • the destination TRP is a TRP whose signal quality is greater than or equal to the signal quality threshold among multiple TRPs.
  • the time offset of the SMTC corresponding to the destination TRP may be related to at least one of the following: the time offset between the system frame of the destination TRP and the system frame of the TRP where the terminal device currently resides, communication
  • the delay between the device and the TRP where the terminal device currently resides is related to the delay between the communication device and the destination TRP.
  • each TRP among multiple TRPs corresponds to a satellite
  • offset is the time offset of the SMTC corresponding to the destination TRP
  • d2 is the delay between the communication device and the destination TRP
  • d1 is the delay between the communication device and the TRP where the terminal equipment currently resides
  • F2 is the delay of the destination TRP.
  • F1 is the starting time of the system frame of the TRP where the terminal device currently resides.
  • the transceiver module can be specifically used to: the distance between the TRP where the communication device currently resides and the communication device is greater than or equal to the first distance threshold, and/or the distance between the destination TRP and the communication device The distance is less than or equal to the second distance threshold, then the system message block of the destination TRP is received according to the SSB corresponding to the destination TRP.
  • the physical broadcast channel PBCH of the SSB corresponding to the destination TRP carries the first indication information.
  • the transceiver module may also be used to receive the first indication information.
  • the first indication information is carried on the first control resource set corresponding to the destination TRP.
  • the first indication information is used to indicate whether the first system message block is updated, and the first system message block is used for the communication device to access the target TRP.
  • the PBCH of the SSB corresponding to the destination TRP may carry the second indication information.
  • the transceiver module may also be used to receive the second indication information.
  • the second indication information is carried on the second control resource set corresponding to the destination TRP.
  • the second indication information is used to indicate whether the second system message block is updated.
  • the second system message block may include one or more of the following information about the destination TRP: ephemeris information of the satellite corresponding to the destination TRP, reference point position information of the satellite corresponding to the destination TRP, or destination TRP The time to provide service to the communication device.
  • the transceiver module can also be used to receive the second information.
  • the second information is carried in the radio resource control reconfiguration message and/or non-access stratum signaling.
  • the second information may include one or more of the following information: information for TRP reselection, earthquake and tsunami warning system, commercial mobile warning service warning message, or global positioning system time information.
  • the PBCH of the SSB corresponding to the destination TRP can carry a third indication.
  • the third indication information is used to indicate the time-frequency resources of the paging search space corresponding to the communication device.
  • the transceiver module may also be used to receive the fourth indication information.
  • the fourth indication information is used to indicate the third control resource set.
  • the processing module may also be configured to determine a paging search space corresponding to the communication device according to the first mapping relationship and the third control resource set.
  • the first mapping relationship is used to indicate the corresponding relationship between the control resource set and the paging search space.
  • the frequency domain range of the control resource set corresponding to the paging search space includes the frequency domain range of the paging search space.
  • the processing module can also be used to obtain the movement distance of the communication device. If the movement distance is greater than the third distance threshold, the registration area update process is executed.
  • the transceiver module may include a receiving module and a sending module. Wherein, the transceiver module is used to implement the sending function and receiving function of the communication device described in the eighth aspect.
  • the communication device may further include a storage module that stores programs or instructions.
  • the processing module executes the program or instruction, the communication device can perform the communication method described in the first aspect.
  • the communication device described in the eighth aspect may be a terminal device, a chip (system) or other components or components that can be installed in the terminal device, or a device including the terminal device.
  • This application is intended to This is not limited.
  • a communication device includes: a processing module and a transceiver module.
  • the processing module is used to obtain the first information.
  • the transceiver module is used to send the first information to the terminal device.
  • the first information includes the measurement timing configuration SMTC and the time offset of the SMTC based on the synchronization signal and the broadcast channel block of each TRP in the plurality of TRPs.
  • the multiple TRPs correspond to at least logical TRPs, and the time offset of the SMTC is consistent with the terminal.
  • the time offset of SMTC is used to instruct the terminal device to obtain the synchronization signal and the size of the offset time of the broadcast channel block SSB.
  • the communication device is the communication device corresponding to the TRP where the terminal device currently resides among the multiple TRPs.
  • the time offset of the SMTC corresponding to a TRP can be related to one or more of the following: the time offset between the system frame of the TRP and the system frame of the TRP where the terminal device currently resides, The delay between the terminal equipment and the communication device and the delay between the terminal equipment and the destination TRP are related.
  • offset is the time offset of the SMTC corresponding to a TRP
  • d2 is the delay between the terminal device and the destination TRP
  • d1 is the delay between the terminal device and the TRP where the terminal device currently resides
  • F2 is the destination TRP.
  • F1 is the starting time of the system frame of the TRP currently resident by the terminal device.
  • the transceiver module may include a receiving module and a sending module. Wherein, the transceiver module is used to implement the sending function and receiving function of the communication device described in the ninth aspect.
  • the communication device may further include a storage module that stores programs or instructions.
  • the processing module executes the program or instruction, the communication device can perform the communication method described in the second aspect.
  • the communication device described in the ninth aspect may be a satellite, a chip (system) or other components or components that can be installed in the satellite, or a device including a satellite, which is not covered in this application. limited.
  • a communication device in a tenth aspect, includes: a processing module and a transceiver module. Among them, the processing module is used to send SSB through the transceiver module and send system message blocks to the terminal device.
  • the communication device is the communication device corresponding to the destination TRP.
  • the destination TRP is a TRP whose signal quality is greater than or equal to the signal quality threshold among multiple TRPs.
  • the first indication information may be carried on the physical broadcast channel PBCH of the SSB corresponding to the destination TRP.
  • the transceiver module may also be used to send the first indication information to the terminal device.
  • the first indication information is carried on the first control resource set corresponding to the destination TRP.
  • the first indication information is used to indicate whether the first system message block is updated, and the first system message block is used for the terminal device to access the target TRP.
  • the PBCH of the SSB corresponding to the destination TRP may carry the second indication information.
  • the transceiver module may also be used to send the second indication information to the terminal device.
  • the second indication information is carried on the second control resource set corresponding to the destination TRP.
  • the second indication information is used to indicate whether the second system message block is updated.
  • the second system message block may include one or more of the following information about the communication device corresponding to the destination TRP: ephemeris information of the communication device corresponding to the destination TRP, reference point location information of the communication device corresponding to the destination TRP, or The time the destination TRP provides services to the terminal device.
  • the transceiver module can also be used to send the second information to the terminal device.
  • the second information is carried in the radio resource control reconfiguration message and/or non-access stratum signaling.
  • the second information may include one or more of the following information: information for TRP access, information for TRP reselection, earthquake and tsunami warning system, commercial mobile warning service warning message, or global positioning system time information.
  • the PBCH of the SSB corresponding to the destination TRP may carry third indication information, and the third indication information is used to indicate the time-frequency resources of the paging search space corresponding to the terminal device.
  • the transceiver module may also be used to send the fourth indication information to the terminal device.
  • the fourth indication information is used to indicate the third control resource set.
  • the first mapping relationship is used to indicate the corresponding relationship between the control resource set and the paging search space.
  • the frequency domain range of the control resource set corresponding to the paging search space includes the frequency domain range of the paging search space.
  • the transceiver module may include a receiving module and a sending module. Wherein, the transceiver module is used to implement the sending function and receiving function of the communication device described in the tenth aspect.
  • the communication device may further include a storage module that stores programs or instructions.
  • the processing module executes the program or instruction, the communication device can perform the communication method described in the third aspect.
  • the communication device described in the tenth aspect may be a TRP, a chip (system) or other components or components that can be disposed in the TRP, or a device including a TRP, which is not covered in this application. limited.
  • a communication device in an eleventh aspect, includes: a processing module and a transceiver module. Wherein, the transceiver module is used to receive the sixth indication information. The sixth indication information is used to indicate the fourth control resource set.
  • a processing module configured to determine a paging search space corresponding to the communication device according to the second mapping relationship and the fourth control resource set. The second mapping relationship is used to indicate the corresponding relationship between the control resource set and the paging search space.
  • the frequency domain range of the control resource set corresponding to the paging search space includes the frequency domain range of the paging search space.
  • the transceiver module may also be configured to receive control information of the paging message on the paging search space corresponding to the communication device.
  • the transceiver module may include a receiving module and a sending module. Wherein, the transceiver module is used to implement the sending function and receiving function of the communication device described in the eleventh aspect.
  • the communication device may further include a storage module that stores programs or instructions.
  • the processing module executes the program or instruction, the communication device can perform the communication method described in the fourth aspect.
  • the communication device described in the eleventh aspect may be a terminal device, a chip (system) or other components or components that can be installed in the terminal device, or a device including the terminal device. This application There is no restriction on this.
  • a communication device in a twelfth aspect, includes: a processing module, configured to obtain sixth indication information.
  • the transceiver module is used to send the sixth instruction information.
  • the sixth indication information is used to indicate the fourth control resource set.
  • the fourth control resource set is used to determine the time-frequency resources of the paging search space corresponding to the terminal device.
  • the transceiver module may include a receiving module and a sending module.
  • the transceiver module is used to implement the sending function and receiving function of the communication device described in the twelfth aspect.
  • the communication device may further include a storage module that stores programs or instructions.
  • the processing module executes the program or instruction, the communication device can perform the communication method described in the fifth aspect.
  • the communication device described in the twelfth aspect may be a TRP, a chip (system) or other components or components that can be disposed in the TRP, or a device including a TRP. This application does not cover this issue. Make limitations.
  • a communication device in a thirteenth aspect, includes: a processing module and a transceiver module. Among them, the processing module is used to receive the physical broadcast channel PBCH from the TRP through the transceiver module.
  • the PBCH carries seventh indication information, and the seventh indication information is used to indicate the time-frequency resources of the paging search space corresponding to the communication device.
  • the processing module is also configured to receive control information of the paging message through time-frequency resources according to the paging search space corresponding to the communication device.
  • the transceiver module may include a receiving module and a sending module. Wherein, the transceiver module is used to implement the sending function and receiving function of the communication device described in the thirteenth aspect.
  • the communication device may further include a storage module that stores programs or instructions.
  • the processing module executes the program or instruction, the communication device can perform the communication method described in the sixth aspect.
  • the communication device described in the thirteenth aspect may be a terminal device, or may be disposed on The chip (system) or other components or components in the terminal equipment may also be a device including the terminal equipment, which is not limited in this application.
  • a communication device in a fourteenth aspect, includes: a processing module and a transceiver module. Among them, the processing module is used to obtain the seventh indication information.
  • the seventh indication information is used to indicate time-frequency resources of the paging search space corresponding to the terminal device.
  • Transceiver module used to send the physical broadcast channel PBCH.
  • the PBCH carries seventh indication information.
  • the transceiver module may include a receiving module and a sending module. Wherein, the transceiver module is used to implement the sending function and receiving function of the communication device described in the fourteenth aspect.
  • the communication device described in the fourteenth aspect may further include a storage module that stores programs or instructions.
  • the processing module executes the program or instruction, the communication device can perform the communication method described in the seven aspects.
  • the communication device described in the fourteenth aspect may be a TRP, a chip (system) or other components or components that can be disposed in the TRP, or a device including a TRP. This application does not cover this issue. Make limitations.
  • a communication device is provided.
  • the communication device is used to perform the communication method described in any one of the implementation modes of the first to seventh aspects.
  • the communication device described in the fifteenth aspect may be a terminal device or a TRP, or a chip (system) or other component or component that may be disposed in the terminal device or TRP, or a device including the terminal device or TRP. device.
  • the communication device described in the fifteenth aspect includes modules, units, or means corresponding to implementing the communication method described in any one of the first to seventh aspects.
  • the modules, units, or means It can be implemented by hardware, software, or corresponding software implementation by hardware.
  • the hardware or software includes one or more modules or units for performing the functions involved in the above communication method.
  • a communication device in a sixteenth aspect, includes: a processor, the processor is configured to execute the communication method described in any one of the possible implementations of the first to seventh aspects.
  • the communication device described in the sixteenth aspect may further include a transceiver.
  • the transceiver can be a transceiver circuit or an interface circuit.
  • the transceiver can be used for the communication device described in the eighth aspect to communicate with other communication devices.
  • the communication device described in the sixteenth aspect may further include a memory.
  • This memory can be integrated with the processor or provided separately.
  • the memory may be used to store computer programs and/or data involved in the communication method described in any one of the first to seventh aspects.
  • the communication device described in the sixteenth aspect may be a terminal device or a TRP, or may be provided in The chip (system) or other parts or components in the terminal equipment or TRP, or the device containing the terminal equipment or TRP.
  • a communication device in a seventeenth aspect, includes: a processor, the processor is coupled to a memory, and the processor is used to execute a computer program stored in the memory, so that the communication device executes any one of the possible implementation methods of the first to seventh aspects. communication method.
  • the communication device described in the seventeenth aspect may further include a transceiver.
  • the transceiver can be a transceiver circuit or an interface circuit.
  • the transceiver can be used for the communication device described in the seventeenth aspect to communicate with other communication devices.
  • the communication device described in the seventeenth aspect may be a terminal device or a TRP, or a chip (system) or other component or component that may be disposed in the terminal device or TRP, or a device including the terminal device or TRP. device.
  • a communication device including: a processor and a memory; the memory is used to store a computer program, and when the processor executes the computer program, the communication device executes the first to seventh aspects The communication method described in any one of the implementation methods.
  • the communication device described in the eighteenth aspect may further include a transceiver.
  • the transceiver can be a transceiver circuit or an interface circuit.
  • the transceiver can be used for the communication device described in the eighteenth aspect to communicate with other communication devices.
  • the communication device described in the tenth aspect may be a terminal device or a TRP, or a chip (system) or other component or component that may be disposed in the terminal device or TRP, or a device including the terminal device or TRP. .
  • a communication device including: a processor; the processor is configured to be coupled to a memory, and after reading the computer program in the memory, execute the steps in the first to seventh aspects according to the computer program. any implementation of the communication method.
  • the communication device described in the nineteenth aspect may further include a transceiver.
  • the transceiver can be a transceiver circuit or an interface circuit.
  • the transceiver can be used for the communication device described in the eighth aspect to communicate with other communication devices.
  • the communication device described in the nineteenth aspect may be a terminal device or a TRP, or a chip (system) or other component or component that may be disposed in the terminal device or TRP, or a device including the terminal device or TRP. device.
  • a processor configured to execute the communication method described in any one of the possible implementations of the first to seventh aspects.
  • a communication system in a twenty-first aspect, includes one or more terminal devices and one or more TRPs. Such as the above-mentioned first TRP or the above-mentioned second TRP.
  • a computer-readable storage medium including: a computer program or an instruction; when the computer program or instruction is run on a computer, it causes the computer to execute any one of the possibilities of the first to seventh aspects.
  • the communication method described in the implementation method is provided, including: a computer program or an instruction; when the computer program or instruction is run on a computer, it causes the computer to execute any one of the possibilities of the first to seventh aspects.
  • a computer program product including a computer program or instructions.
  • the computer program or instructions When the computer program or instructions are run on a computer, the computer is caused to execute any one of the possible implementation methods of the first to seventh aspects. The communication method described.
  • Figure 1 is a schematic diagram of a cell handover or cell reselection scenario in a terrestrial network communication system
  • Figure 2 is a schematic diagram of the corresponding relationship between cells and transmission reception points in different network architectures
  • Figure 3 is a schematic diagram of a cell handover or cell reselection scenario in a communication system other than a terrestrial network;
  • Figure 4 is a schematic architectural diagram of a communication system provided by an embodiment of the present application.
  • Figure 5 is a schematic diagram of the relationship between the coverage area of a super cell and the coverage area of a super satellite;
  • Figure 6 is a schematic flow chart of a communication method provided by an embodiment of the present application.
  • Figure 7 is a schematic diagram of the relationship between the time for a terminal device to receive SSB of different TRPs
  • Figure 8 is a schematic diagram of the relationship between the second control resource set, SSB and system message block in the time domain and frequency domain;
  • Figure 9 is a schematic diagram of the time-frequency positions of the first indication information and the second indication information in Methods 1 to 4;
  • Figure 10 is a schematic diagram of the relationship between the first control resource set, the first system message block and the second system message block in the fifth method
  • Figure 11 is a schematic diagram of the time-frequency positions of the first indication information and the second indication information in the fifth method
  • Figure 12 is a schematic diagram of the scenario of super cell reselection or registration area update
  • Figure 13 is a schematic diagram of the time-frequency position relationship between the third control resource set, paging search space and paging timing;
  • Figure 14 is a schematic flow chart of another communication method provided by an embodiment of the present application.
  • Figure 15 is a schematic flow chart of another communication method provided by an embodiment of the present application.
  • Figure 16 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • Figure 17 is a schematic second structural diagram of a communication device provided by an embodiment of the present application.
  • Staring mode refers to the satellite network in which satellites adjust the beam direction through beam forming to serve the same service area. In staring mode, when the elevation angle of a satellite is greater than the elevation angle threshold and a handover is required, all users in the service area will switch to the next satellite.
  • the elevation threshold can be 30 degrees, or 40 degrees. In specific implementation, the elevation angle threshold can be determined according to specific scenarios, which will not be described again here.
  • the following examples illustrate how different satellites provide services in staring mode.
  • the service area of satellite 1 is area A.
  • satellite 2 adjusts the beam direction through beam forming, so that the service area of satellite 2 is area A.
  • Measurement timing configuration based on synchronization signal and broadcast channel block synchronization signal and physical broadcast channel block measurement timing configuration (SMTC): that is, the SSB measurement time window configuration.
  • SMTC synchronization signal and physical broadcast channel block measurement timing configuration
  • Non-terrestrial network can include satellite networks.
  • the satellite network has significant advantages such as global coverage, long-distance transmission, easy deployment, and is not restricted by geographical conditions. Therefore, it is widely used in maritime communications, positioning and navigation, disaster relief, scientific experiments, video broadcasting, and earth observation. field. Satellite networks can be combined with terrestrial networks (cellular communication networks as shown in Figure 1) to provide wider coverage and form an integrated communication network covering sea, land, air, space and ground to provide services to users in different regions. .
  • the next generation satellite network in the satellite network includes low Earth orbit (LEO) satellites, medium orbit Earth satellite (MEO) satellites, high earth orbit satellite (HEO) satellites, geostationary Orbiting (geostationary earth orbit, GEO) satellites and non-geostationary orbit (non-GEO, NGEO) satellites, etc.
  • Next-generation satellite network overall showing a trend of ultra-dense and heterogeneous.
  • the scale of the next-generation satellite network has grown from 66 in the Iridium constellation to 720 in the OneWeb constellation, and extended to the 12,000+ Starlink ultra-dense low-orbit satellite constellation.
  • the next generation satellite network presents heterogeneous characteristics.
  • the ground network as shown in Figure 1 includes a network device 101a and a network device 101b, where the network device 101a provides services through cell 1 and the network device 101b provides services through cell 2. If the terminal device moves from cell 1 to cell 2 (as shown in the moving direction in Figure 1), or the terminal device moves from cell 2 to cell 1 (not shown in Figure 1), cell handover or cell reselection will occur. If the terminal device is in cell 1 or cell 2 and does not move, cell reselection or cell handover does not need to be performed.
  • the cell reselection or cell handover may include the terminal device initiating a cell reselection or cell handover process to the source cell, and obtaining the physical cell identifier (PCI) or global cell identifier (cell global identifier) of the target cell from the source cell. CGI), and then access the target cell according to the PCI or CGI of the target cell, and accept the services provided by the target cell.
  • PCI physical cell identifier
  • CGI global cell identifier
  • a hypercell network architecture may be used in a terrestrial network communication system to reduce the frequency of terminal equipment switching cells during movement.
  • New PCI or GCI must be obtained during cell switching or reselection.
  • a network device can also be called a TRP.
  • Cells (physical cells) corresponding to multiple transmission and reception points operating in the same frequency band can be merged into a logical cell.
  • the TRP in a logical cell uses the same PCI or CGI, and the TRP within the logical cell can be connected to a network device used to manage transmission reception points in the super cell.
  • the PCIs of the cells on TRP1 to TRP6 are PCI1 to PCI6 in sequence. That is to say, each transmission and reception point corresponds to a cell. .
  • the terminal equipment moves between the coverage areas of any two TRPs from TRP1 to TRP6, cell reselection or cell handover will occur. For example, if the terminal device moves from the cell corresponding to TRP1 to the cell corresponding to TRP2, or if the terminal device moves from the cell corresponding to TRP2 to the cell corresponding to TRP3, cell reselection or cell handover will occur.
  • the physical cells corresponding to TRP1 to TRP3 shown in (a) of Figure 2 can be merged into one super cell (super cell 1 ), the physical cells corresponding to TRP4 to TRP5 can be merged into another super cell (super cell 2).
  • TRP1 to TRP3 all use the same physical cell identity, such as PCI7;
  • TRP4 to TRP6 all use the same physical cell identity, such as PCI8.
  • the terminal device when the terminal device is between the cell corresponding to TRP1 and the cell corresponding to TRP2, or the terminal device is between the cell corresponding to TRP2 and the cell corresponding to TRP3, or the terminal device is between the cell corresponding to TRP4 and the cell corresponding to TRP5 between, or when the terminal device moves between the cell corresponding to TRP5 and the cell corresponding to TRP6, since the PCI before and after the move will not change, the terminal device cannot sense the existence of multiple TRPs, so the terminal device does not need to perform Layer 3 (Layer 3, L3) handover can access a new cell (or access TRP).
  • Layer 3 Layer 3, L3
  • the process for terminal equipment to access the transmission receiving point is as follows: the terminal equipment sends a random access channel preamble (RACH preamble).
  • the TRP that receives the random access channel preamble sends the signal quality of the received random access preamble to the network device.
  • the network device can select a random access preamble whose signal quality is greater than the first signal quality threshold (such as -6dB).
  • One of the TRPs provides services to end devices, allowing the end devices to access the transmission point. In this way, access based on the signal quality of the synchronization signal and physical broadcast channel block (SSB) sent by the TRP can be avoided.
  • the signal quality of the random access preamble can be determined based on the reference signal receiving power (RSRP). For example, the TRP with the highest RSRP of the random access preamble can be selected to provide services to the terminal device.
  • RSRP reference signal receiving power
  • public information in the super-cell network architecture such as physical downlink control channel (PDCCH), physical uplink control channel (PUCCH), physical random access channel, Information carried by channels such as PRACH), sounding reference signal (SRS), or SSB, etc.
  • PDCCH physical downlink control channel
  • PUCCH physical uplink control channel
  • PUCCH physical random access channel
  • Information carried by channels such as PRACH
  • SRS sounding reference signal
  • SSB SSB
  • terminal equipment specific signaling such as radio resource control (RRC) signaling, medium access control (MAC)-control element (control element, CE), downlink control information (downlink control information (DCI), which can be independently scheduled and allocated by the TRP that provides services to the terminal device.
  • RRC radio resource control
  • MAC medium access control
  • DCI downlink control information
  • the network device that controls the TRP in the super cell can determine whether to switch the TRP based on the quality of the SRS of the terminal device under each TRP. Taking the SRS quality determined by SRS RSRP as an example, if the SRS RSRP of a TRP exceeds the SRS RSRP first signal quality difference threshold (such as -110dBm) of the TRP currently serving the terminal device, the network device can switch to a new TRP. The terminal device provides services, thereby preventing the terminal device from sensing TRP switching.
  • the SRS RSRP first signal quality difference threshold such as -110dBm
  • the super-cell network architecture can be used in high-speed scenarios such as high-speed railways, subways, and tunnels.
  • TPR mobility management
  • each TPR corresponds to a cell. Even if the terminal device does not move, the movement of the TPR will cause the cell that provides services to the terminal device to change. That is to say, the movement of the TPR will cause the terminal device to switch cells or reset. Select a cell, that is, switch TRP or reselect TRP.
  • the TPR includes satellite 301a and satellite 301b. Satellite 301a corresponds to cell 3, satellite 301b corresponds to cell 4, and terminal equipment 302 is located in cell 3 and does not move.
  • the terminal equipment needs to perform cell switching or cell reselection, that is, perform TRP reselection or switching, re-complete synchronization with the cell, and obtain broadcast information of the new cell.
  • the moving speed of the satellite is about 7.5 kilometers per second.
  • the frequency of switching TRP or reselecting TRP is extremely high.
  • the frequency of switching TRP or reselecting TRP can be Minutes and even seconds count.
  • NTN networks such as satellite networks
  • the TRP moves quickly and a super-cell network architecture is adopted
  • the solution of switching or reselecting the TRP through SRS is not applicable.
  • the system information block mainly includes the following categories:
  • SIB1 Information for cell access.
  • SIB2 to SIB5 Information used for cell reselection.
  • SIB6 to SIB8 including earthquake and tsunami warning system (earthquake tsunami warning system, ETWS) warning messages and commercial mobile alarm system (CMAS) warning messages.
  • ETWS earthquake tsunami warning system
  • CMAS commercial mobile alarm system
  • SIB9 Includes global positioning system (GPS) time information.
  • SIBx includes one or more of the following information: ephemeris information, reference point location information, and cell validity time.
  • SIB2-SIB9 and SIBx are all scheduled through SIB1. Therefore, any update of any system message block in SIB2-SIB9 and SIBx will cause SIB1 to be updated. For example, whether SIB1 is updated can be determined as follows:
  • the terminal device When the terminal device is in the RRC idle state or inactive state, it can detect the paging-radio network temporary identifier (Paging-radio network temporary identifier, P) at the time point when the terminal device is used to receive paging. -RNTI) to obtain an indication of whether SIB1 has changed.
  • P paging-radio network temporary identifier
  • -RNTI paging-radio network temporary identifier
  • the update process of the system message block is performed within a specific time period, which can be represented by the broadcast control channel (BCCH) modification period.
  • the boundary of the BCCH modification period is related to the frame number of the system frame and the number of system frames.
  • SFN is the frame number of the system frame. That is to say, the terminal device can start the BCCH modification cycle every m system frames, that is, the terminal device can detect the system message block once every m system frames.
  • m is a positive integer.
  • each system message block except SIB6 to SIB8 in the system message block is updated can be determined by the value tag (valueTag) corresponding to each system message block in SIB1.
  • valueTag value tag
  • the end device rereads and updates the system message block.
  • the end device may not reread the system message block.
  • the terminal device can re-read the system message block. In this case, regardless of whether the value tag corresponding to each system message block changes, the terminal device The device reads all system message blocks.
  • the terminal device can obtain the first information, such as receiving the first information corresponding to the current resident cell, to obtain measurements based on broadcast information blocks corresponding to multiple TRPs.
  • Timing configuration SSB measurement timing configuration, SMTC
  • SMTC SMTC time offset
  • multiple TRPs correspond to at least one logical cell.
  • the terminal device may receive the SSB corresponding to each TRP in the plurality of TRPs according to the first information, thereby receiving the system message block of the target TRP according to the SSB corresponding to each TRP.
  • the terminal device can receive the SSB of each TRP based on the SMTC corresponding to each TRP and the time offset of the SMTC, and then receive the system message block of the destination TRP. In this way, the reception success rate of system message blocks can be improved, thereby improving communication reliability.
  • the paging search space is indicated by SIB1. Therefore, before receiving the paging message, the terminal device needs to decode SIB1 to obtain the paging search space, and then receive the paging message according to the paging search space. The process of receiving the paging message is complicated, resulting in low communication efficiency.
  • Embodiments of the present application provide a communication method.
  • the terminal device can determine the paging search space through the PBCH from the network device to determine the control information of the paging message according to the paging search space.
  • the terminal device may determine the paging search space through the control resource set indicated by the network device to determine the control information of the paging message according to the paging search space. In this way, the terminal device can determine the paging search space without demodulating the first system message block, thereby reducing the workload of the terminal device and improving communication efficiency.
  • NTN non-terrestrial network
  • HAPS high altitude platform station
  • IcaN integrated communications and navigation communication and navigation
  • GNSS global navigation satellite system
  • ultra-dense low-orbit satellite communication system etc.
  • Satellite communication systems can be integrated with traditional mobile communication systems.
  • the mobile communication system may be a fourth generation (4G) communication system (for example, a long term evolution (LTE) system), a global interoperability for microwave access (WiMAX) communication systems, fifth generation (5th generation, 5G) communication systems (for example, new radio (NR) systems), and future mobile communication systems, such as sixth generation (6th generation, 6G) mobile communication systems.
  • 4G fourth generation
  • LTE long term evolution
  • WiMAX global interoperability for microwave access
  • 5th generation, 5G for example, new radio (NR) systems
  • future mobile communication systems such as sixth generation (6th generation, 6G) mobile communication systems.
  • At least one refers to one or more, and “multiple” refers to two or more.
  • “And/or” describes the association of associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the related objects are in an “or” relationship.
  • “At least one of the following” or similar expressions thereof refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items).
  • At least one of a, b, or c can represent: a, b, c; a and b; a and c; b and c; or a, b, and c.
  • a, b, c can be single or multiple.
  • FIG. 4 is an architectural schematic diagram of a communication system to which the communication method provided by the embodiment of the present application is applicable.
  • the communication system in the embodiment of the present application may include a transparent satellite architecture and a non-transparent satellite architecture.
  • Transparent transmission is also called elbow forwarding transmission, that is, the signal only undergoes frequency conversion, signal amplification and other processes on the satellite.
  • the satellite is transparent to the signal, as if it does not exist.
  • Non-transparent transmission can be called regenerative (on-board access/processing) transmission, that is, the satellite has some or all base station functions.
  • the satellite mentioned in the embodiment of this application may be a satellite base station, may also include an orbiting receiver or repeater for relaying information, or may be a network-side device mounted on the satellite; the satellite may be a LEO satellite , MEO satellites, HEO satellites, GEO satellites and NGEO satellites, etc. This application does not make any limitation on this.
  • the communication system includes at least one terminal device (terminal device 401a to 401f), one or more TRPs (TRP 402a to TRP 402d) and at least one network device 403.
  • Any one of the TRPs 402a to 402d can establish a communication connection with the network device 403, and a communication connection can be established between the terminal equipment (terminal equipment 401a to 401f) and each TRP. Communication connections can be established between different TRPs.
  • each TRP can provide communication services, navigation services, or positioning services for terminal devices through multiple beams.
  • a TRP can use multiple beams to cover the service area, and different beams can provide services through one or more of time division, frequency division or space division.
  • At least one TRP in the communication system shown in Figure 4 provides services for one super cell. That is, the super cell can provide an area served by at least one TRP in the communication system. In the event that the TRP moves, The TRPs that serve the coverage area of the super cell at different times may be the same or different. When a TRP moves out of the super cell coverage area, the TRP that moves into the super cell coverage area can provide services for terminal equipment in the super cell.
  • the frame numbers of the system frames of different cells in a super cell may be continuous (that is, frame synchronization) or discontinuous (that is, frame synchronization may not be required).
  • the TRP that provides services for the super cell may include media access control (MAC) entities and physical entities.
  • MAC media access control
  • the network device can be used to maintain context and capability information of the terminal device.
  • the context of the terminal device includes one or more of the following: cell scrambling code, key information, and resource configuration information of a cell that provides services to the terminal device.
  • the capability information of the terminal device may include one or more of the following information: power level, whether to support multiple connections, polarization (such as circular polarization or linear polarization) capabilities, or supported bandwidth.
  • One network device can correspond to one or more super cells. The network device may be used to manage the scheduling of resources in each super cell corresponding to the network device.
  • PBCH physical broadcast channel
  • PRACH physical random access channel
  • SS synchronization signal
  • paging paging
  • other public information can be scheduled among the satellites that provide services for the super cell.
  • the terminal device can store identification information of the super cell where the terminal device is currently located.
  • the terminal device can also perform uplink and downlink synchronization with satellites that provide services for the terminal device, and store broadcast messages of the super cell where the terminal device is located.
  • the broadcast message may include one or more of the following: primary system message, secondary system message, random access-related resource configuration information, same-frequency or inter-frequency cell reselection message, or ephemeris information.
  • the following takes one network device 403 corresponding to one super cell as an example to further explain the relationship between the super cell, TRP, and network devices.
  • TRP402a and TRP402b work in the same frequency band, and the super cell includes area 1 to area 4. If in the time period T0 to T1, the cell corresponding to TRP402a covers area 1 and area 2, and the cell corresponding to TRP402b covers area 3 and area 4, then in the time period T0 to T1, the network device 403 can use TRP402a and TRP402b as a super Services are provided in the community.
  • the above-mentioned TRP can be a satellite, aircraft, unmanned aerial system (unmanned aerial system, UAS), or drone, etc., or the TRP is a wireless communication function installed on a satellite, aircraft, UAS, or drone. chip or device.
  • the above-mentioned network device is a device located on the network side of the above-mentioned communication system and has a wireless transceiver function, or a chip or chip system that can be installed on the device.
  • the network equipment includes but is not limited to: access points (APs) in wireless fidelity (WiFi) systems, such as home gateways, routers, servers, switches, bridges, etc., evolved node B (evolved Node B, eNB), radio network controller (radio network controller, RNC), node B (Node B, NB), base station controller (BSC), base transceiver station (BTS), home Base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (BBU), wireless relay node, wireless backhaul node, transmission point (TP), transmission and reception point (transmission and reception point (TRP), etc., and can also be 5G, such as gNB in the new radio (NR) system, or transmission point (TP), or TRP, one
  • a group (including multiple antenna panels) of antenna panels can also be a network node that constitutes a gNB or a transmission receiving point, such as a baseband unit (BBU), or a distributed unit (DU), a path with base station functions. edge unit (road side unit, RSU), etc.
  • the network device can also be a device-to-device (D2D) communication system, a machine-to-machine (M2M) communication system, the Internet of things (IoT), or an Internet of Vehicles communication system. Or other devices that perform network-side functions in communication systems.
  • the above-mentioned terminal device is a terminal that is connected to the above-mentioned communication system and has a wireless transceiver function, or a chip or chip system that can be installed on the terminal.
  • the terminal may be a handheld device, a vehicle-mounted device, a wearable device, a computing device, or other processing device connected to a wireless modem.
  • the terminal equipment may also be called user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, User agent or user device.
  • UE user equipment
  • the terminal device in the embodiment of the present application may be a mobile phone, a satellite phone, a cellular phone, a smart phone, a wireless data card, a wireless modem, a machine type communication device, a cordless phone, or a session initiation protocol.
  • the terminal device of this application can also be a vehicle-mounted module, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip or vehicle-mounted unit built into the vehicle as one or more components or units.
  • the vehicle uses the built-in vehicle-mounted module, vehicle-mounted module, Vehicle-mounted components, vehicle-mounted chips or vehicle-mounted units can implement the communication method provided by this application.
  • the core network equipment can be the existing mobile communication architecture, such as the equipment in the core network (core network, CN) of the 5G network's third generation partnership project (3GPP) access architecture or future mobile communications Devices in the core network in the architecture.
  • the core network provides an interface to the data network, providing communication connections, authentication, management, policy control, and carrying of data services for terminal devices.
  • CN can further include: access and mobility management function (AMF), session management function (SMF), authentication server function (AUSF), policy Control node (policy control function, PCF), user plane function network element (user plane function, UPF) and other network elements.
  • AMF access and mobility management function
  • SMF session management function
  • AUSF authentication server function
  • policy Control node policy control function
  • PCF user plane function network element
  • UPF user plane function
  • the AMF network element is used to manage the access and mobility of terminal equipment, and is mainly responsible for terminal equipment authentication, terminal equipment mobility management, terminal equipment paging and other functions.
  • satellites constituting a super cell are used as an example for explanation. It can be understood that in some other embodiments, the satellite may also be an aircraft or other mobile equipment, which is not specifically limited in the embodiments of the present application.
  • FIG. 4 is only a simplified schematic diagram for ease of understanding, and the communication system may also include other Satellites, and/or other terminal equipment, and/or other network equipment are not shown in Figure 4.
  • the terminal device may receive SSBs of multiple cells according to the SMTCs of the multiple cells and the time offset of each SMTC, thereby receiving the system message block.
  • FIG. 6 is a schematic flowchart of a communication method provided by an embodiment of the present application. This communication method can be applied to communication between the terminal device and the satellite shown in Figure 4.
  • the communication method includes the following steps:
  • the first TRP obtains the first information.
  • the first TRP is the TRP where the terminal device currently resides among the multiple TRPs.
  • the TRP where the terminal device currently resides is the TRP where the terminal device resides when it obtains the first information.
  • the first information may be measurement configuration information, such as radio resource measurement (RRM) information.
  • RRM radio resource measurement
  • the first information includes the SSB measurement timing configuration (SSB measurement timing configuration, SMTC) corresponding to each TRP in the plurality of TRPs and the time offset of each SMTC.
  • SSB measurement timing configuration SSB measurement timing configuration, SMTC
  • Multiple TRPs correspond to at least one logical cell
  • the SMTC time offset corresponds to the terminal device.
  • the SMTC time offset is used to instruct the terminal device to obtain the offset time of the SSB measurement window.
  • Multiple cells correspond to at least one logical cell, that is, multiple cells correspond to at least one super cell.
  • the plurality of TRPs each work in the gaze mode.
  • SMTC corresponds to TRP and is configured with TRP as the granularity.
  • the SMTC corresponding to different terminal devices in the same TRP is the same.
  • the SMTC time offset corresponds to the terminal device, which means that the SMTC time offset is relative to the terminal device.
  • the SMTC time offset is configured with the terminal device as the granularity.
  • different TRPs can have different SMTC time offsets.
  • the same TRP may also have different SMTC time offsets relative to different terminal devices. For example, if there are terminal equipment 1, terminal equipment 2 and TRP1 in the communication system, then there is an SMTC time offset between TRP1 and terminal equipment 1, and there is another SMTC time offset between TRP1 and terminal equipment 2. quantity.
  • the TRPs other than the TRP where the terminal device currently resides are adjacent TRPs.
  • the SMTC time offset of an adjacent TRP can be related to at least one of the following: the system of the adjacent TRP The time offset (also called time difference) between the frame and the system frame of the TRP where the terminal device currently resides (hereinafter referred to as the first TRP), the delay between the terminal device and the first TRP, the time delay between the terminal device and the corresponding The delay between adjacent TRPs, the distance between the terminal equipment and the adjacent TRP, the distance between the terminal equipment and the first TRP, the propagation speed of electromagnetic waves, the location of the terminal equipment, or the location of the first TRP.
  • the time offset of the SMTC of the adjacent TRP may be related to at least one of the following: the time offset between the system frame of the adjacent TRP and the first TRP (which may also be referred to as the adjacent TRP and the first TRP The time difference between system frames), the delay between the terminal device and the first TRP, and the delay between the terminal device and the adjacent TRP.
  • the SMTC time offset is further explained below in combination with scenarios 1 to 4.
  • the time offset of the SMTC of adjacent TRPs is related to the following: the delay between the terminal device and the TRP.
  • the time offset of the SMTC of the adjacent TRP may be related to the following items: the time offset between the system frame of the adjacent TRP and the system frame of the first TRP, the time delay between the terminal device and the first TRP , and the delay between the terminal device and the adjacent TRP.
  • offset is the time offset of SMTC
  • d2 is the delay between the terminal device and the adjacent TRP
  • d1 is the delay between the terminal device and the first TRP
  • F2 is the start of the system frame of the adjacent TRP.
  • time F1 is the starting time of the system frame of the first TRP.
  • L1 is the distance between the terminal equipment and the first TRP
  • c is the electromagnetic wave propagation speed
  • L2 is the distance between the terminal device and the adjacent TRP.
  • the time offset of SMTC is as shown in case 2-1 or case 2-2 below.
  • the time offset of the SMTC of the adjacent TRP can be related to the following items: Adjacent The time offset between the system frame of the TRP and the system frame of the first TRP, the distance between the terminal device and the adjacent TRP, the distance between the terminal device and the first TRP, or the propagation speed of the electromagnetic wave.
  • time offset between the system frame of the adjacent TRP and the system frame of the first TRP is 0, that is, the system frame of the adjacent TRP is aligned with the system frame of the first TRP, then optionally, the system frame of the adjacent TRP is aligned with the system frame of the first TRP.
  • the time offset of the SMTC of an adjacent TRP may be related to the following: the distance between the terminal device and the adjacent TRP, the distance between the terminal device and the first TRP, or the propagation speed of the electromagnetic wave.
  • the delay between the terminal equipment and the adjacent TRP is related to the location of the terminal equipment, the location of the adjacent TRP and the propagation speed of electromagnetic waves.
  • the delay between the terminal equipment and the first TRP is related to the following items:
  • the terminal equipment It is related to the position of the equipment, the position of the first TRP, and the propagation speed of the electromagnetic wave.
  • the delay between the terminal device and the first TRP satisfies the following formula (7) The relationship shown:
  • the time offset of SMTC is as shown in case 3-1 or case 3-2 below.
  • the time offset of the SMTC of the adjacent TRP can be related to the following items: Adjacent The time offset between the system frame of the TRP and the system frame of the first TRP, the position of the terminal device, the position of the adjacent TRP, the position of the first TRP, or the propagation speed of the electromagnetic wave.
  • the time offset of SMTC can satisfy the relationship shown in the following formula (9):
  • time offset between the system frame of the adjacent TRP and the system frame of the first TRP is 0, that is, the system frame of the adjacent TRP is aligned with the system frame of the first TRP, then optionally, the system frame of the adjacent TRP is aligned with the system frame of the first TRP.
  • the time offset of the SMTC of an adjacent TRP may be related to the following: the location of the terminal device, the location of the adjacent TRP, the location of the first TRP, or the propagation speed of the electromagnetic wave.
  • the time offset of SMTC can satisfy the relationship shown in the following formula (10):
  • the time offset of SMTC can be implemented in combination with at least two of position, distance, or delay.
  • the time offset of the SMTC may be related to one or more of the following: the time delay between the terminal device and the first TRP, the position of the terminal device, the position of the adjacent TRP, and the propagation speed of the electromagnetic wave.
  • the time offset of SMTC can satisfy the relationship shown in the following formula (11):
  • the time offset of the SMTC may be related to one or more of the following: the distance between the terminal device and the first TRP, the position of the adjacent TRP, and the propagation speed of the electromagnetic wave.
  • the time offset of SMTC can satisfy the relationship shown in the following formula (12):
  • the time offset of the SMTC of the adjacent TRP can also be related to any of the following: the time offset between the system frame of the adjacent TRP and the system frame of the first TRP, the time offset between the terminal device and the first TRP The delay, as well as the delay between the terminal device and the adjacent TRP, will not be described again here.
  • the time offset of the SMTC of the first TRP may be related to any of the following: the time delay between the terminal device and the first TRP, the distance between the terminal device and the first TRP, the electromagnetic wave Propagation speed, location of the end device, or location of the first TRP.
  • the SMTC time offset may be: the delay between the terminal device and the first TRP.
  • the time delay between the terminal device and the first TRP can be determined according to the above formula (4) or formula (8), which will not be described again here.
  • the position of the TRP may be the position of the satellite corresponding to the TRP.
  • the time offset of the SMTC can be determined by combining the time offset of the system frame between different TRPs and the delay between the terminal device and different TRPs, thereby reducing the impact of the time delay and the time offset of the system frame on the reception
  • the impact of SSB improves communication reliability.
  • the destination TRP is one of adjacent TRPs.
  • each TRP can correspond to a satellite.
  • multiple TRPs can correspond to one satellite.
  • the first TRP may receive first information from the network device.
  • the first information may be carried in RRC signaling or SIB.
  • the first TRP sends the first information to the terminal device.
  • the terminal device obtains the first information.
  • the first TRP is the TRP where the terminal device currently resides.
  • the first information may be carried in RRC signaling or SIB.
  • Each TRP in the multiple TRPs sends SSB.
  • the terminal device receives the SSB corresponding to each TRP in the plurality of TRPs according to the first information.
  • the SSB corresponding to a TRP is used to determine the signal quality of the TRP.
  • SSB can also be used to indicate a control resource set, such as control resource set 0.
  • SSB includes primary synchronization signals (PSS), secondary synchronization signals (SSS) and PBCH.
  • PSS primary synchronization signals
  • SSS secondary synchronization signals
  • PBCH PBCH
  • MIB master information block
  • the MIB can indicate control resource set 0, where control resource set 0 can carry physical control channel related information used to schedule SIB1.
  • the terminal device receives the SSB corresponding to each TRP in the plurality of TRPs according to the first information, which may include step 6-1.
  • the terminal device receives the corresponding SSB according to the SMTC corresponding to each adjacent TRP and the time offset of the SMTC.
  • the SSB of the adjacent TRP; and, step 6-2, the terminal device receives the SSB of the first TRP according to the SMTC corresponding to the first TRP and the time offset of the SMTC.
  • the terminal device receives the SSB of the adjacent TRP based on the SMTC corresponding to each adjacent TRP and the time offset of the SMTC.
  • the synchronization signal burst period (SS burst period) of the first TRP is 5 milliseconds (millisecond, ms).
  • the time period of the SS burst period is T1 to T1+5ms.
  • the terminal equipment detects SSB in the period between T1+2ms and T1+5ms in the SS burst period, that is, SMTC is the SS burst period.
  • the terminal device If the SMTC time offset offset1 of the terminal device receiving the SSB of the destination TRP is 1ms, the terminal device actually receives the SSB in the time period between T1+3ms and T1+6ms. If the SMTC time offset offset2 of the SSB of the destination TRP is received by the terminal device is 3ms, the terminal device actually receives the SSB in the time period between T1+5ms and T1+8ms. It can be understood that for the same destination TRP, the SMTC time offset for different terminal devices can be the same or different. Among them, the synchronization signal burst period may also be called a synchronization period.
  • the destination TRP sends the system message block of the destination TRP to the terminal device.
  • the terminal device receives the system message block of the destination TRP according to the SSB corresponding to the destination TRP.
  • the destination TRP is a TRP whose signal quality is greater than or equal to the signal quality threshold among multiple TRPs.
  • the destination TRP can be determined based on the SSB. For example, the following steps 6-3 and 6- 4 Determine the destination TRP:
  • Step 6-3 The terminal device determines the signal quality of each TRP based on the SSB of each TRP.
  • Step 6-4 The terminal device determines one of the TRPs whose signal quality is greater than or equal to the signal quality threshold as the destination TRP.
  • the destination TRP may be the TRP with the greatest signal quality among the TRPs whose signal quality is greater than or equal to the signal quality threshold.
  • the terminal device receives the system message block of the destination TRP according to the SSB corresponding to each TRP, which may include: If the distance between the TRP where the terminal device currently resides and the terminal device is greater than or equal to the first distance threshold (such as 20km, etc.), and/or, the distance between the destination TRP and the terminal device is less than or equal to the second distance threshold (such as 15km, etc.), then the terminal device receives the system message block of the destination TRP according to the SSB corresponding to the destination TRP.
  • the first distance threshold such as 20km, etc.
  • the second distance threshold such as 15km, etc.
  • the distance between the terminal device and the currently resident TRP is greater than or equal to the first distance threshold, and/or the distance between the destination TRP and the terminal device is less than or equal to the second distance threshold, , reselect or switch from the currently resident TRP to the destination TRP.
  • the terminal device receives the system message block of the destination TRP according to the SSB corresponding to the destination TRP, which may include: the terminal device determines whether the first system message is updated and whether the second system message is updated according to the SSB, and receives the first system message block of the destination TRP. System message block and/or second system message block.
  • the first system information block may be system information block (SIB) 1.
  • SIB system information block
  • the second system message block may include one or more of the following information of the destination TRP: ephemeris information of the destination TRP, reference point location information of the destination TRP, or time when the destination TRP provides services to the terminal device.
  • the second system message block may be SIBx.
  • Example 1 The following is further explained by combining Example 1 and Example 2.
  • Example 1 If whether the first system message block is updated and whether the second system message block is updated do not affect each other, then when the first system message block is updated, the terminal device can receive the first system message block; in the second system When the message block is updated, the terminal device can receive the second system message block; when both the first system message block and the second system message block are updated, the terminal device can receive the first system message block and the second system message block. Message block.
  • the following method 1 to method 4 can be used to indicate whether the first system message block is updated and whether the second system message block is updated. The relevant introduction will not be repeated here.
  • Example 2 If the first system message block indicates whether the second system message block is updated, that is to say, the second system message block further affects the update of the first system message block, then in the case of the first system message block being updated , the terminal device receives the first system message block; when the second system message block is updated, the first system message block is also updated, and the terminal device receives the first system message block and the second system message block.
  • the terminal device can obtain the first information, and receive each TRP pair in the multiple TRPs according to the SMTC and the time offset of the SMTC corresponding to the multiple TRPs in the first information.
  • the corresponding SSB then receives the system message block of the destination TRP.
  • the multiple TRPs correspond to at least one logical cell, and the target TRP is a TRP whose signal quality is greater than or equal to the signal quality threshold among the multiple TRPs.
  • SSBs can be received at different times for different TRPs, so that the time of receiving SSBs matches the TRPs, thereby improving the success rate of receiving system message blocks and improving communication reliability.
  • the implementation principle of whether the first system message block is updated is as shown in the following method 1 or 2.
  • Method 1 The PBCH of the SSB corresponding to the destination TRP carries the first indication information.
  • the first indication information is used to indicate whether the first system message block is updated.
  • the first indication information may be implemented by bits in the PBCH or bits in the PBCH payload. Taking the first indication information to be implemented by 1 bit in the PBCH as an example, if the bit corresponding to the first indication information is "0", it can mean that the first system message block has not been updated. If the bit corresponding to the first indication information is "0", If it is "1", it can indicate that the first system message block has been updated.
  • Method 2 Use the control resource set (CORESET) to indicate whether the first system message block is updated.
  • the method provided in Figure 6 may also include:
  • the target TRP sends first indication information to the terminal device.
  • the terminal device receives the first indication information.
  • the first indication information is carried on the first control resource set corresponding to the destination TRP, and CORESET is used to instruct the search for DCI-related time-frequency resource information.
  • the first indication information is used to indicate whether the first system message block is updated, and the first system message block is used for the terminal device to access the target TRP.
  • the first control resource set may be CORESET0.
  • CORESET0 carries downlink control information (DCI) of the terminal device, and the DCI carries the first indication information.
  • DCI downlink control information
  • the terminal device can blindly detect the DCI through a radio network temporary identifier (RNTI), thereby obtaining the first indication information.
  • RNTI radio network temporary identifier
  • a new RNTI-x is defined to indicate the update of SIB information.
  • the implementation principle of whether the second system message block is updated is as shown in the following manner three or four.
  • Method 3 The PBCH of the SSB corresponding to the destination TRP may carry the second indication information.
  • the method provided in Figure 6 may also include: the destination TRP sending second indication information.
  • the terminal device receives the second indication information.
  • the second indication information is carried on the second control resource set corresponding to the destination TRP.
  • the second control resource set may be CORESET0.
  • the second control resource set may be CORESETx.
  • the second indication information is used to indicate whether the second system message block is updated.
  • the first system message block and the second system message block require a total of two bits to indicate.
  • the first bit Indicates whether the first system message block is updated, and the second bit indicates whether the second system message block is updated, then "00" indicates that neither the first system message block nor the second system message block has been updated; "01” indicates the first system The message block is updated, but the second system message block is not updated; "10” indicates that the first system message block is not updated, and the second system message block is updated; "11” indicates that the first system message block is updated, and the second system message block is updated. The message block is updated.
  • the time-frequency relationship between the first indication information, the second indication information and the system message block in the above-mentioned methods 1 to 4 will be further described below in combination with time-frequency positions.
  • the horizontal axis is time domain resources and the vertical axis is frequency domain resources.
  • the time domain resources of the first indication information may be located in the time domain resources of the SSB, and the frequency domain resources of the first indication information may be located in the frequency domain resources of the SSB.
  • the time domain resources of the first indication information may be located within the time domain resources of the first control resource set, and the frequency domain resources of the first indication information may be located within the frequency domain resources of the first control resource set.
  • the time domain resources of the second indication information may be located within the time domain resources of the SSB, and the frequency domain resources of the second indication information may be located within the frequency domain resources of the SSB.
  • the time domain resources of the second indication information may be located within the time domain resources of the second control resource set, and the frequency domain resources of the second indication information may be located within the frequency domain resources of the second control resource set.
  • the second system message block can be updated separately, and the update status of the second system message block can be avoided from affecting the update status of other system message blocks, for example , when the second system message block is updated, the second system message block can be updated separately, thereby reducing the overhead of the terminal device and improving the operating efficiency.
  • the implementation principle of whether the second system message block is updated is as shown in the following method five.
  • Method 5 Whether the first system message block is updated can be implemented through the above-mentioned method 1 or 2.
  • the first system message block may carry second indication information, and the second indication information is used to indicate whether the second system message block is updated.
  • the relationship between the first control resource set, the first system message block and the second system message block is as shown in Figure 10 .
  • the time-frequency relationship between the first indication information, the second indication information and the system message block in the above-mentioned method five is further explained below in combination with the time-frequency position.
  • the horizontal axis is the time domain resource and the vertical axis is the frequency domain resource.
  • the time domain resources of the first indication information may be located within the time domain resources of the SSB, and the frequency domain resources of the first indication information may be located within the frequency domain resources of the SSB.
  • the time domain resources of the first indication information may be located within the time domain resources of the first control resource set, and the frequency domain resources of the first indication information may be located within the frequency domain resources of the first control resource set.
  • the time domain resources of the second indication information may be located within the time domain resources of the first system message block, and the frequency domain resources of the second indication information may be located within the frequency domain resources of the first system message block.
  • the method provided in Figure 6 may also include: the destination TRP sending second information.
  • the terminal device receives the second information.
  • the second information may include one or more of the following information: information for super cell reselection, earthquake and tsunami warning system, commercial mobile early warning service warning message, or global positioning system time information.
  • the second information is carried in RRC reconfiguration (reconfiguration) message and/or non-access stratum (non access stratum, NAS) signaling.
  • the information in SIB2-SIB9 existing in 5G NR can be carried in RRC messages and/or NAS signaling, and sent to the terminal device through RRC messages and/or NAS signaling.
  • the RRC message and/or the NAS signaling bearer information can be updated separately for the second information, which can prevent the update status of the second information from affecting the update status of other system message blocks.
  • the second information may be configured by the TRP to the terminal device through an RRC message and/or NAS signaling after the terminal device initially accesses.
  • the super cell reselection information may include a fourth distance threshold used to determine whether to perform super cell reselection.
  • the terminal device If the moving distance of the terminal device exceeds the fourth distance threshold, the terminal device performs a super cell reselection process.
  • the above-mentioned second information may also include a third distance threshold used to determine whether to update the registration area.
  • the information used for super cell reselection may include one or more of the following: the fourth distance threshold used to determine whether to perform super cell reselection, the common SMTC of one or more super cells adjacent to the super cell where the terminal device is located. , the frequency points of one or more super cells adjacent to the super cell where the terminal equipment is located, and the reference positions of one or more super cells adjacent to the super cell where the terminal equipment is located.
  • the method provided in Figure 6 may also include step 6-5.
  • Step 6-5 The terminal device obtains the movement distance of the terminal device.
  • a UE-specific threshold related to the movement distance such as a third distance threshold, may be configured for each terminal device.
  • the method provided in Figure 6 may also include steps 6-6.
  • Step 6-6 If the movement distance of the terminal device is greater than the third distance threshold, the terminal device executes the registration area update process, that is, the terminal device initiates a registration area update request to the network device, and the update request carries the current location-related information of the terminal device; After receiving the registration area update request, the network device updates the UE location information maintained on the network side and sends the UE registration area request response information.
  • the response information can carry information such as the new movement distance threshold.
  • the terminal device may send a registration area update request to the network device, and the registration area update request may include the location information of the terminal device after movement.
  • the network device After the network device receives the registration area update request of the terminal device, it can update the location of the terminal device.
  • the movement distance may be the current position of the terminal device relative to a reference time point, such as the position of the time point when the second information is delivered.
  • a UE-specific threshold related to the movement distance such as a fourth distance threshold, may be configured for each terminal device.
  • the method provided in Figure 6 may also include steps 6-7.
  • Step 6-7 If the moving distance of the terminal device is greater than the fourth distance threshold, the terminal device performs a super cell reselection process.
  • one network device corresponds to super cell 3 to super cell 5, and super cell 3 is adjacent to super cell 4, and super cell 4 is adjacent to super cell 5.
  • each super cell corresponds to at least one TRP.
  • Terminal equipment 1 and terminal equipment 2 are both located in super cell 3, and terminal equipment 3 is located in super cell 2.
  • the terminal device 1 is located at the center of the super cell 3.
  • the high-layer signaling may include a third distance threshold.
  • the third distance threshold may be 1000 kilometers (kilometre, km).
  • the high-layer signaling may not include reselection-related information.
  • terminal equipment 2 is located at the edge of super cell 3 and super cell 4 (for example, the position between the terminal equipment and the reference point is greater than a given threshold).
  • the high-level The public SMTC of super cell 3 and the fourth distance threshold can be configured in the signaling.
  • the fourth distance threshold may be 100km.
  • terminal device 3 is located at the edge of super cell 4 and super cell 5.
  • the second information may include the public SMTC of super cell 4, the third distance threshold, and the fourth distance. threshold, wherein the third distance threshold may be 30km, and the fourth distance threshold may be 500km.
  • the second information may also include a corresponding relationship between the moving direction of the terminal device and the third distance threshold, and/or a corresponding relationship between the moving direction of the terminal device and the fourth distance threshold.
  • the PBCH of the SSB corresponding to the destination TRP may carry third indication information.
  • the third indication information is used to indicate the time-frequency resources of the paging search space (pagingSS) corresponding to the terminal device. .
  • the paging search space is used to carry fifth indication information, such as control information of the paging message.
  • the fifth indication information is used to indicate the paging occasion (paging occasion), that is, the time to receive the paging message.
  • the control information of the paging message may be used to indicate the paging timing.
  • the method provided in Figure 6 may also include steps 6-8 and 6-9.
  • Step 6-8 The destination TRP sends the fourth indication information.
  • the terminal device receives the fourth indication information.
  • the fourth indication information is used to indicate the third control resource set.
  • the fourth indication information may be carried in the PDCCH.
  • the third control resource set may be CORESET0.
  • Step 6-9 The terminal device determines the paging search space corresponding to the terminal device according to the first mapping relationship and the third control resource set.
  • the first mapping relationship is used to indicate the corresponding relationship between the control resource set and the paging search space.
  • the frequency domain range of the control resource set corresponding to the paging search space includes the frequency domain range of the paging search space, or in other words, the paging search space
  • the frequency domain range of the space is within the frequency domain range of the paging search space.
  • the time domain position of the paging search space is located behind the time domain position of the control resource set corresponding to the paging search space.
  • the paging search space is scrambled based on the dedicated identification information of the terminal equipment in the super cell.
  • the frequency domain range of the third control resource set is the frequency domain range of the paging search space corresponding to the third control resource.
  • the paging search space can indicate paging opportunities.
  • the frequency domain range of the third control resource set may be the same as the frequency domain range including the paging search space.
  • Third control The time domain position of the paging search space corresponding to the control resource set is located behind the time domain position of the third control resource set. After paging the time domain position of the search space, a physical downlink share channel (PDSCH) may also be included.
  • PDSCH physical downlink share channel
  • the paging timing on the terminal device can correspond to one broadcast beam of one satellite.
  • the paging opportunity on the terminal device may correspond to the Kth broadcast beam under satellite M.
  • the terminal equipment determines the paging search space according to the PBCH or the third control resource set, which can avoid demodulating the first system message block to determine the paging search space, which can reduce the processing complexity of the terminal equipment, thereby further improving communication efficiency.
  • the time-frequency resources of the paging search space may also be indicated through the control resource set for receiving paging messages.
  • FIG. 14 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • This communication method can be applied to communication between the terminal device and the satellite shown in Figure 4. Provide a method of communication.
  • This communication method includes:
  • the second TRP sends the sixth indication information.
  • the terminal device receives the sixth indication information.
  • the sixth indication information is used to indicate the fourth control resource set.
  • the terminal device determines the paging search space corresponding to the terminal device according to the second mapping relationship and the fourth control resource set.
  • the second mapping relationship is used to indicate the corresponding relationship between the control resource set and the paging search space.
  • the frequency domain range of the control resource set corresponding to the paging search space includes the frequency domain range of the paging search space.
  • the implementation principle of the second mapping relationship can be referred to the implementation principle of the first mapping relationship mentioned above, and will not be described again here.
  • the communication method shown in Figure 14 may also include: step 14-1.
  • Step 14-1 The terminal device receives the control information of the paging message on the time-frequency resource of the paging search space corresponding to the terminal device.
  • the control information of the paging message may be used to indicate the transmission timing of specific paging information, that is, the time and frequency location of receiving the specific paging message.
  • method shown in Figure 14 may also include: step 14-2.
  • Step 14-2 the third TRP sends SSB.
  • the terminal device receives the SSB according to the SMTC corresponding to the third TRP and the time offset of the SMTC.
  • time offset of SMTC please refer to the relevant introduction of the time offset of SMTC in the method embodiment shown in Figure 6 above.
  • the implementation principle of the third TRP sending SSB can refer to the implementation principle of the TRP sending SSB in the existing technology.
  • the third TRP and the second TRP may be different.
  • the second TRP and the third TRP may be the destination TRP in the method embodiment shown in Figure 6; or the second TRP and the third TRP may be the ones shown in Figure 6. shows the first TRP in the method embodiment.
  • the terminal device may refer to step 6-1 based on the implementation principle of the SMTC corresponding to the third TRP and the time offset of the SMTC.
  • the third TRP and the second TRP can be the same satellite.
  • the second TRP can be the destination TRP in the method embodiment shown in Figure 6
  • the third TRP can be the third TRP in the method embodiment shown in Figure 6.
  • step 14-2 for the implementation principle of the terminal device receiving the SSB based on the SMTC corresponding to the third TRP and the time offset of the SMTC, please refer to step 6-2.
  • the terminal device determines the paging search space without demodulating the first system message block, thereby reducing the workload of the terminal device and improving communication efficiency.
  • the terminal device can receive paging from multiple satellites, thereby further improving communication efficiency.
  • the time-frequency resources of the paging search space may also be indicated through the control resource set for receiving paging messages.
  • FIG. 15 is a schematic flowchart of yet another communication method provided by an embodiment of the present application. This communication method can be applied to communication between the terminal device and the satellite shown in Figure 4.
  • This communication method includes:
  • the fourth TRP sends PBCH.
  • the terminal device receives the PBCH.
  • the PBCH carries seventh indication information, and the seventh indication information is used to indicate the time-frequency resources of the paging search space corresponding to the terminal equipment.
  • the PBCH can be carried in the SSB.
  • the satellite sends the SSB to send the PBCH
  • the terminal device receives the SSB, and obtains the PBCH from the SSB.
  • the fourth TRP may be the destination TRP in the method embodiment shown in FIG. 6; or, the fourth TRP may be the first TRP in the method embodiment shown in FIG. 6.
  • the terminal device receiving SSB please refer to step 6-2, which will not be described again here.
  • the terminal device receives the control information of the paging message in the time-frequency resource of the paging search space corresponding to the terminal device.
  • the control information of the paging message may be used to indicate the paging timing, that is, the time to receive the paging message.
  • the terminal device determines the paging search space without demodulating the first system message block, thereby reducing the workload of the terminal device and improving communication efficiency.
  • the terminal device can receive paging from multiple satellites, thereby further improving communication efficiency.
  • the communication method provided by the embodiment of the present application is described in detail above with reference to Figures 6-15.
  • the communication device used to perform the communication method provided by the embodiment of the present application will be described in detail below with reference to FIGS. 16 and 17 .
  • FIG. 16 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the communication device 1600 includes: a processing module 1601 and a transceiver module 1602.
  • FIG. 16 shows only the main components of the communication device.
  • the communication device 1600 may be adapted to the communication system shown in FIG. 4 to perform the functions of the terminal device in the communication method shown in FIG. 6 .
  • the processing module 1601 is used to obtain the first information.
  • the first information includes a broadcast information block-based measurement timing configuration SMTC corresponding to each TRP in the plurality of TRPs, and a time offset of each SMTC.
  • Multiple TRPs correspond to at least one logical cell, SMTC
  • the time offset corresponds to the communication device 1600, and the time offset of SMTC is used to instruct the communication device 1600 to obtain the offset time of the synchronization signal and the broadcast channel block SSB.
  • the transceiving module 1602 is configured to receive the SSB corresponding to each TRP in the plurality of TRPs according to the first information. Among them, the SSB corresponding to a TRP is used to determine the signal quality of the TRP.
  • the transceiving module 1602 is also configured to receive the system message block of the destination TRP according to the SSB corresponding to each TRP.
  • the destination TRP is a TRP whose signal quality is greater than or equal to the signal quality threshold among multiple TRPs.
  • the time offset of the SMTC corresponding to the destination TRP may be related to at least one of the following: the time offset between the system frame of the destination TRP and the system frame of the TRP where the terminal device currently resides, communication
  • the delay between the device 1600 and the TRP where the terminal device currently resides is related to the delay between the communication device 1600 and the destination TRP.
  • each TRP among multiple TRPs corresponds to a satellite
  • offset is the time offset of the SMTC corresponding to the destination TRP
  • d2 is the delay between the communication device 1600 and the destination TRP
  • d1 is the delay between the communication device 1600 and the TRP where the terminal device currently resides
  • F2 is the destination.
  • F1 is the starting time of the TRP system frame where the terminal device currently resides.
  • the transceiver module 1602 may be specifically configured to: the distance between the TRP currently resident on the communication device 1600 and the communication device 1600 is greater than or equal to the first distance threshold, and/or the destination TRP is not connected to the communication device 1600. If the distance between the devices 1600 is less than or equal to the second distance threshold, the system message block of the destination TRP is received according to the SSB corresponding to the destination TRP.
  • the PBCH of the SSB corresponding to the destination TRP carries the first indication information.
  • the transceiver module 1602 may also be used to receive the first indication information.
  • the first indication information is carried on the first control resource set corresponding to the destination TRP.
  • the first indication information is used to indicate whether the first system message block is updated, and the first system message block is used for the communication device 1600 to access the target TRP.
  • the PBCH of the SSB corresponding to the destination TRP may carry the second indication information.
  • the transceiver module 1602 may also be used to receive the second indication information.
  • the second indication information is carried on the second control resource set corresponding to the destination TRP.
  • the second indication information is used to indicate whether the second system message block is updated.
  • the second system message block may include one or more of the following information about the destination TRP: ephemeris information of the satellite corresponding to the destination TRP, reference point position information of the satellite corresponding to the destination TRP, or destination TRP The time to provide services to the communication device 1600.
  • the transceiver module 1602 can also be used to receive the second information.
  • the second information is carried in RRC messages and/or NAS signaling.
  • the second information may include one or more of the following information: information for TRP reselection, earthquake and tsunami warning system, commercial mobile warning service warning message, or global positioning system time information.
  • the PBCH of the SSB corresponding to the destination TRP may carry third indication information, and the third indication information is used to indicate the time-frequency resources of the paging search space corresponding to the communication device 1600.
  • the transceiver module 1602 may also be used to receive the fourth indication information.
  • the fourth indication information is used to indicate the third control resource set.
  • the processing module 1601 may also be configured to determine the paging search space corresponding to the communication device 1600 according to the first mapping relationship and the third control resource set. Among them, the first mapping relationship is used to indicate the control resource set and paging search According to the spatial correspondence relationship, the frequency domain range of the control resource set corresponding to the paging search space includes the frequency domain range of the paging search space.
  • the processing module 1601 can also be used to obtain the movement distance of the communication device 1600. If the movement distance is greater than the third distance threshold, the registration area update process is executed.
  • the transceiver module 1602 may include a receiving module and a sending module. Among them, the transceiver module 1602 is used to implement the sending function and receiving function of the communication device 1600.
  • the communication device 1600 may also include a storage module that stores programs or instructions.
  • the processing module 1601 executes the program or instruction, the communication device 1600 can perform the communication method shown in FIG. 6 .
  • the processing module 1601 involved in the communication device 1600 can be implemented by a processor or a processor-related circuit component, and can be a processor or a processing unit;
  • the transceiver module 1602 can be implemented by a transceiver or a transceiver-related circuit component, and can be a transceiver. transmitter or transceiver unit.
  • the communication device 1600 may be a terminal device, a chip (system) or other components or components that can be installed in the terminal device, or a device including the terminal device, which is not limited in this application.
  • the technical effects of the communication device 1600 can be referred to the technical effects of the communication method shown in FIG. 6 , which will not be described again here.
  • the communication device 1600 may be adapted to the communication system shown in FIG. 4 to perform the function of the target TRP in the communication method shown in FIG. 6 .
  • the processing module 1601 is used to obtain the first information.
  • the transceiver module 1602 is used to send the first information to the terminal device.
  • the first information includes the measurement timing configuration SMTC and the time offset of the SMTC based on the broadcast information block of each TRP in the plurality of TRPs, the plurality of TRPs correspond to at least logical cells, and the time offset of the SMTC corresponds to the terminal device,
  • the time offset of SMTC is used to instruct the terminal device to obtain the synchronization signal and the size of the offset time of the broadcast channel block SSB.
  • the communication device 1600 is the communication device 1600 corresponding to the TRP where the terminal device currently resides among the multiple TRPs.
  • the time offset of the SMTC corresponding to a TRP can be related to one or more of the following: the time offset between the system frame of the TRP and the system frame of the TRP where the terminal device currently resides, The delay between the terminal device and the communication device 1600 and the delay between the terminal device and the destination TRP are related.
  • offset is the time offset of the SMTC corresponding to a TRP
  • d2 is the delay between the terminal device and the destination TRP
  • d1 is the delay between the terminal device and the TRP where the terminal device currently resides
  • F2 is the destination TRP.
  • F1 is the starting time of the system frame of the TRP currently resident by the terminal device.
  • the transceiver module 1602 may include a receiving module and a sending module. Among them, the transceiver module 1602 is used to implement the sending function and receiving function of the communication device 1600.
  • the communication device 1600 may also include a storage module that stores programs or instructions.
  • the processing module 1601 executes the program or instruction, the communication device 1600 can perform the communication method shown in FIG. 6 .
  • the processing module 1601 involved in the communication device 1600 may be a processor or a processor-related circuit.
  • Component implementation may be a processor or a processing unit;
  • the transceiver module 1602 may be implemented by a transceiver or transceiver-related circuit components, which may be a transceiver or a transceiver unit.
  • the communication device 1600 may be a satellite, a chip (system) or other components or components that can be installed in the satellite, or a device including a satellite, which is not limited in this application.
  • the technical effects of the communication device 1600 can be referred to the technical effects of the communication method shown in FIG. 6 , which will not be described again here.
  • the communication device 1600 may be adapted to the communication system shown in FIG. 4 to perform the function of the target TRP in the communication method shown in FIG. 6 .
  • the processing module 1601 is used to send SSB through the transceiver module 1602 and send the system message block to the terminal device.
  • the communication device 1600 is the communication device 1600 corresponding to the destination TRP.
  • the destination TRP is a TRP whose signal quality is greater than or equal to the signal quality threshold among multiple TRPs.
  • the PBCH of the SSB corresponding to the destination TRP may carry the first indication information.
  • the transceiver module 1602 may also be used to send the first indication information to the terminal device.
  • the first indication information is carried on the first control resource set corresponding to the destination TRP.
  • the first indication information is used to indicate whether the first system message block is updated, and the first system message block is used for the terminal device to access the target TRP.
  • the PBCH of the SSB corresponding to the destination TRP may carry the second indication information.
  • the transceiver module 1602 may also be used to send the second indication information to the terminal device.
  • the second indication information is carried on the second control resource set corresponding to the destination TRP.
  • the second indication information is used to indicate whether the second system message block is updated.
  • the second system message block may include one or more of the following information about the communication device 1600 corresponding to the destination TRP: ephemeris information, reference point location information, or the time when the destination TRP provides services to the terminal device.
  • the transceiver module 1602 can also be used to send the second information to the terminal device.
  • the second information is carried in RRC messages and/or NAS signaling.
  • the second information may include one or more of the following information: information for TRP access, information for TRP reselection, earthquake and tsunami warning system, commercial mobile warning service warning message, or global positioning system time information.
  • the PBCH of the SSB corresponding to the destination TRP may carry third indication information, and the third indication information is used to indicate the time-frequency resources of the paging search space corresponding to the terminal device.
  • the transceiver module 1602 may also be used to send the fourth indication information to the terminal device.
  • the fourth indication information is used to indicate the third control resource set.
  • the first mapping relationship is used to indicate the corresponding relationship between the control resource set and the paging search space.
  • the frequency domain range of the control resource set corresponding to the paging search space includes the frequency domain range of the paging search space.
  • the transceiver module 1602 may include a receiving module and a sending module. Among them, the transceiver module 1602 is used to implement the sending function and receiving function of the communication device 1600.
  • the communication device 1600 may also include a storage module that stores programs or instructions.
  • the processing module 1601 executes the program or instruction, the communication device 1600 can perform the communication method shown in FIG. 6 .
  • the processing module 1601 involved in the communication device 1600 can be implemented by a processor or a processor-related circuit component, and can be a processor or a processing unit;
  • the transceiver module 1602 can be a transceiver or a transceiver-related circuit.
  • Component implementation which can be a transceiver or a transceiver unit.
  • the communication device 1600 may be a satellite, a chip (system) or other components or components that can be installed in the satellite, or a device including a satellite, which is not limited in this application.
  • the technical effects of the communication device 1600 can be referred to the technical effects of the communication method shown in FIG. 6 , which will not be described again here.
  • the communication device 1600 may be adapted to the communication system shown in FIG. 4 to perform the functions of the terminal device in the communication method shown in FIG. 14 .
  • the transceiver module 1602 is used to receive the sixth indication information.
  • the sixth indication information is used to indicate the fourth control resource set.
  • the processing module 1601 is configured to determine the paging search space corresponding to the communication device 1600 according to the second mapping relationship and the fourth control resource set.
  • the second mapping relationship is used to indicate the corresponding relationship between the control resource set and the paging search space.
  • the frequency domain range of the control resource set corresponding to the paging search space includes the frequency domain range of the paging search space.
  • the transceiver module 1602 may also be configured to receive control information of the paging message on the paging search space corresponding to the communication device 1600.
  • the transceiver module 1602 may include a receiving module and a sending module. Among them, the transceiver module 1602 is used to implement the sending function and receiving function of the communication device 1600.
  • the communication device 1600 may also include a storage module that stores programs or instructions.
  • the processing module 1601 executes the program or instruction
  • the communication device 1600 can execute the communication method shown in FIG. 14 .
  • the processing module 1601 involved in the communication device 1600 can be implemented by a processor or a processor-related circuit component, and can be a processor or a processing unit;
  • the transceiver module 1602 can be implemented by a transceiver or a transceiver-related circuit component, and can be a transceiver. transmitter or transceiver unit.
  • the communication device 1600 may be a terminal device, a chip (system) or other components or components that can be installed in the terminal device, or a device including the terminal device, which is not limited in this application.
  • the technical effects of the communication device 1600 can be referred to the technical effects of the communication method shown in FIG. 14 , which will not be described again here.
  • the communication device 1600 may be adapted to the communication system shown in FIG. 4 to perform the function of the third satellite in the communication method shown in FIG. 14 .
  • the sixth indication information is used to indicate the fourth control resource set.
  • the fourth control resource set is used to determine the time-frequency resources of the paging search space corresponding to the terminal device.
  • the transceiver module 1602 may include a receiving module and a sending module. Among them, the transceiver module 1602 is used to implement the sending function and receiving function of the communication device 1600.
  • the communication device 1600 may also include a storage module that stores programs or instructions.
  • the processing module 1601 executes the program or instruction
  • the communication device 1600 can execute the communication method shown in FIG. 14 .
  • the processing module 1601 involved in the communication device 1600 can be implemented by a processor or a processor-related circuit component, and can be a processor or a processing unit;
  • the transceiver module 1602 can be implemented by a transceiver or a transceiver-related circuit component, and can be a transceiver. transmitter or transceiver unit.
  • the communication device 1600 may be a satellite, a chip (system) or other components or components that can be installed in the satellite, or a device including a satellite, which is not limited in this application.
  • the technical effects of the communication device 1600 can be referred to the technical effects of the communication method shown in FIG. 14 , which will not be described again here.
  • the communication device 1600 may be adapted to the communication system shown in FIG. 4 to perform the functions of the terminal device in the communication method shown in FIG. 15 .
  • the processing module 1601 is used to receive the PBCH from the satellite through the transceiver module 1602.
  • the PBCH carries seventh indication information, and the seventh indication information is used to indicate the time-frequency resources of the paging search space corresponding to the communication device 1600.
  • the processing module 1601 is also configured to receive control information of the paging message through time-frequency resources according to the paging search space corresponding to the communication device 1600.
  • the transceiver module 1602 may include a receiving module and a sending module. Among them, the transceiver module 1602 is used to implement the sending function and receiving function of the communication device 1600.
  • the communication device 1600 may also include a storage module that stores programs or instructions.
  • the processing module 1601 executes the program or instruction
  • the communication device 1600 can execute the communication method shown in FIG. 15 .
  • the communication device 1600 may be a terminal device, a chip (system) or other components or components that can be installed in the terminal device, or a device including the terminal device, which is not limited in this application.
  • the communication device 1600 may be adapted to the communication system shown in FIG. 4 to perform the function of the fifth satellite in the communication method shown in FIG. 15 .
  • the processing module 1601 is used to obtain the seventh indication information.
  • the seventh indication information is used to indicate time-frequency resources of the paging search space corresponding to the terminal device.
  • Transceiver module 1602 used to send PBCH.
  • the PBCH carries seventh indication information.
  • the transceiver module 1602 may include a receiving module and a sending module. Among them, the transceiver module 1602 is used to implement the sending function and receiving function of the communication device 1600.
  • the communication device 1600 may also include a storage module that stores programs or instructions.
  • the processing module 1601 executes the program or instruction
  • the communication device 1600 can execute the communication method shown in FIG. 15 .
  • the communication device 1600 may be a satellite, a chip (system) or other components or components that can be installed in the satellite, or a device including a satellite, which is not limited in this application.
  • the technical effects of the communication device 1600 can be referred to the technical effects of the communication method shown in FIG. 15 , which will not be described again here.
  • FIG. 17 is a second structural schematic diagram of a communication device provided by an embodiment of the present application.
  • the communication device may be a terminal device or a satellite, or may be a chip (system) or other component or assembly that can be installed on the terminal device or satellite.
  • communication device 1700 may include processor 1701.
  • the communication device 1700 may also include a memory 1702 and/or a transceiver 1703.
  • the processor 1701 is coupled to the memory 1702 and the transceiver 1703, for example, through a communication bus.
  • the processor 1701 is the control center of the communication device 1700, and may be a processor or a collective name for multiple processing elements.
  • the processor 1701 is one or more central processing units (CPUs), may also be an application specific integrated circuit (ASIC), or may be configured to implement one or more embodiments of the present application.
  • An integrated circuit such as one or more digital signal processors (DSP), or one or more field programmable gate arrays (FPGA).
  • DSP digital signal processors
  • FPGA field programmable gate arrays
  • the processor 1701 can perform various functions of the communication device 1700 by running or executing software programs stored in the memory 1702 and calling data stored in the memory 1702.
  • the processor 1701 may include one or more CPUs, such as CPU0 and CPU1 shown in FIG. 17 .
  • the communication device 1700 may also include multiple processors, such as the processor 1701 and the processor 1704 shown in FIG. 17 .
  • processors can be a single-core processor (single-CPU) or a multi-core processor (multi-CPU).
  • a processor here may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).
  • the memory 1702 is used to store the software program for executing the solution of the present application, and is controlled by the processor 1701 for execution.
  • the memory 1702 is used to store the software program for executing the solution of the present application, and is controlled by the processor 1701 for execution.
  • the memory 1702 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random access memory (RAM)) or a device that can store information and instructions.
  • ROM read-only memory
  • RAM random access memory
  • Other types of dynamic storage devices for instructions can also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical discs Storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and any other media capable of being accessed by a computer, without limitation.
  • the memory 1702 may be integrated with the processor 1701, or may exist independently and be coupled to the processor 1701 through the interface circuit of the communication device 1700 (not shown in Figure 17), which is not specifically limited in the embodiment of the present application.
  • Transceiver 1703 used for communication with other communication devices.
  • the communication device 1700 is a terminal device, and the transceiver 1703 can be used to communicate with satellites or communicate with another terminal device.
  • the communication device 1700 is a satellite, and the transceiver 1703 can be used to communicate with a terminal device or with another satellite.
  • the transceiver 1703 may include a receiver and a transmitter (not shown separately in Figure 17). Among them, the receiver is used to implement the receiving function, and the transmitter is used to implement the sending function.
  • the transceiver 1703 may be integrated with the processor 1701, or may exist independently and be coupled to the processor 1701 through the interface circuit (not shown in Figure 17) of the communication device 1700. This is not the case in the embodiment of this application. Specific limitations.
  • the structure of the communication device 1700 shown in Figure 17 does not constitute a limitation on the communication device.
  • the actual communication device may include more or less components than shown in the figure, or some components may be combined, or Different component arrangements.
  • the technical effects of the communication device 1700 can be referred to the technical effects of the communication method described in the above method embodiments, which will not be described again here.
  • the processor in the embodiment of the present application can be a central processing unit (CPU).
  • the processor can also be other general-purpose processors, digital signal processors (DSP), special-purpose integrated processors, etc.
  • Circuit application specific integrated circuit, ASIC), off-the-shelf programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.
  • non-volatile memory may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • non-volatile memory can be read-only memory (ROM), programmable ROM (PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically removable memory. Erase electrically programmable read-only memory (EPROM, EEPROM) or flash memory.
  • Volatile memory can be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • DRAM dynamic random access memory
  • RAM synchronous dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • double data rate SDRAM double data rate SDRAM
  • DDR SDRAM double data rate SDRAM
  • enhanced SDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous connection dynamic random access memory access memory
  • direct rambus RAM direct rambus RAM, DR RAM
  • the above embodiments may be implemented in whole or in part by software, hardware (such as circuits), firmware, or any other combination.
  • the above-described embodiments may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another, e.g., the computer instructions may be transferred from a website, computer, server, or data center Transmit to another website, computer, server or data center through wired (such as infrared, wireless, microwave, etc.) means.
  • the computer-readable storage medium may be any available medium that a computer can access, or a data storage device such as a server or a data center that contains one or more sets of available media.
  • the usable media may be magnetic media (eg, floppy disk, hard disk, tape), optical media (eg, DVD), or semiconductor media.
  • the semiconductor medium may be a solid state drive.
  • At least one refers to one or more, and “plurality” refers to two or more.
  • At least one of the following” or similar expressions thereof refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items).
  • at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple .
  • the size of the sequence numbers of the above-mentioned processes does not mean the order of execution.
  • the execution order of each process should be determined by its functions and internal logic, and should not be used in the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can 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 can be integrated into one processing unit, each unit can exist physically alone, or two or more units can 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 is essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program code. .

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente demande concerne un procédé et un appareil de communication, qui peuvent améliorer le taux de réussite de réception d'un bloc de message système et peuvent être appliqués dans un système de communication. Le procédé comprend les étapes suivantes : un dispositif terminal acquiert des premières informations, les premières informations comprenant une configuration de synchronisation de mesure (SMTC) basée sur un signal de synchronisation/bloc de canal de diffusion physique (SSB) correspondant à chacun d'une pluralité de points de réception de transmission (TRP) et un décalage temporel de chaque SMTC, et la pluralité de TRP correspondent à au moins une cellule logique, et les décalages temporels des SMTC correspondent au dispositif terminal ; et le dispositif terminal reçoit un SSB correspondant à chacun de la pluralité de TRP en fonction des premières informations, et reçoit un bloc de message système d'un TRP cible en fonction du SSB correspondant au TRP, un SSB correspondant à un TRP étant utilisé pour déterminer la qualité de signal du TRP et le TRP cible étant un TRP parmi la pluralité de TRP qui a une qualité de signal supérieure ou égale à une valeur seuil de qualité de signal.
PCT/CN2023/080626 2022-08-30 2023-03-09 Procédé et appareil de communication WO2024045543A1 (fr)

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