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WO2025156964A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication

Info

Publication number
WO2025156964A1
WO2025156964A1 PCT/CN2025/070270 CN2025070270W WO2025156964A1 WO 2025156964 A1 WO2025156964 A1 WO 2025156964A1 CN 2025070270 W CN2025070270 W CN 2025070270W WO 2025156964 A1 WO2025156964 A1 WO 2025156964A1
Authority
WO
WIPO (PCT)
Prior art keywords
area
parameter
terminal device
reference position
cell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2025/070270
Other languages
English (en)
Chinese (zh)
Inventor
汪宇
王俊
于天航
孔垂丽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2025156964A1 publication Critical patent/WO2025156964A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H04B7/18513—Transmission in a satellite or space-based system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • the present application relates to the field of communication technology, and in particular to a communication method and device.
  • satellite beam coverage is based on geographic areas. For example, a satellite beam may cover one or more areas over a period of time. If a terminal device is within the area covered by the satellite beam, it can be served by the satellite beam and communicate. Conversely, if the terminal device is outside the coverage area, it cannot communicate.
  • the present application provides a communication method and device, which can enable terminal equipment to more flexibly determine the area covered by satellite beams, with low signaling overhead, which helps to improve communication effectiveness.
  • a communication method is provided.
  • the method can be executed by a terminal device.
  • the "terminal device” in this application can refer to the terminal device itself, or a component in the terminal device (for example, a processor, a chip, or a chip system, etc.), or a logic module or software that can implement all or part of the terminal device functions.
  • the following description is based on the example of the execution subject being the terminal device.
  • the method includes:
  • the terminal device determines a first parameter, where the first parameter is associated with an angle, where the angle includes a beam angle or an elevation angle.
  • the terminal device determines a reference position of a first area based on the first parameter and a first mapping relationship, where the first mapping relationship indicates a conversion relationship between the first parameter and the reference position of the first area.
  • the terminal device when the terminal device determines the first parameter, the terminal device can determine the reference position of the first area based on the first parameter and the first mapping relationship.
  • the first area can be the area covered by beams with different beam angles, or the first area can be the area of the terminal device at different elevation angles, that is, the radius of the first area can have multiple values.
  • the present application can adapt to areas with different radii. That is to say, even for areas with different radii, the terminal device can determine the reference position of the first area based on the first parameter and the first mapping relationship, thereby improving the flexibility of the terminal device in determining the area.
  • the terminal device and the network device can interact based on the first parameter.
  • the terminal device and the network device can interact based on the first parameter.
  • signaling overhead is reduced.
  • the terminal device can communicate based on the reference location of the first area. For example, if the first area is an activation area of a network device, the terminal device can communicate with the network device if the terminal device is in the first area, thereby helping to improve communication efficiency.
  • the method further includes: the terminal device obtaining a location of the terminal device.
  • the terminal device determines a reference location of the area where the terminal device is located based on the location of the terminal device and the reference location of the first area, so that the terminal device communicates based on the area where the terminal device is located.
  • the method further includes: the terminal device obtaining an area identifier.
  • the terminal device determining, based on the first parameter and the first mapping relationship, a reference position of the first area, including: determining, based on the area identifier, the first parameter, and the first mapping relationship, the reference position of the first area, the first area being the area corresponding to the area identifier, so that the terminal device communicates based on the area corresponding to the area identifier.
  • the first parameter indicates the number of first regions.
  • the number of first regions is N
  • the first region is one of the N regions.
  • the first parameter indicates a first area radius.
  • the first parameter indicates a first region level
  • the first region level and the second parameter are used to determine the number of first regions
  • the second parameter is the number of second regions.
  • the second parameter can be understood as a reference parameter.
  • N spot_k k ⁇ N spot_base
  • N spot_k the first number of areas
  • k the identifier of the first area level
  • N spot_base the second number of areas
  • the first parameter indicates a first area level
  • the first area level and the second parameter are used to determine a first area radius
  • the second parameter is a second area radius.
  • the second parameter can be understood as a reference parameter.
  • R spot_k k ⁇ R spot_base , where R spot_k represents the first area radius, k represents the identifier of the first area level, and R spot_base represents the second area radius.
  • the beam angle of beam 1 is angle 1
  • the beam angle of beam 2 is angle 2.
  • the first parameter corresponding to beam 1 indicates the number of regions 1
  • the first parameter corresponding to beam 2 indicates the number of regions 2.
  • Angle 1 is greater than angle 2, and the number of regions 1 is smaller than the number of regions 2.
  • the beam angle of beam 1 is angle 1
  • the beam angle of beam 2 is angle 2.
  • the first parameter corresponding to beam 1 indicates area radius 1
  • the first parameter corresponding to beam 2 indicates area radius 2.
  • Angle 1 is greater than angle 2
  • area radius 1 is greater than area radius 2.
  • the method further includes: the terminal device receiving a third parameter, the third parameter indicating at least one angle range, each angle range in the at least one angle range corresponding to a fourth parameter.
  • the terminal device obtains a first angle, where the first angle is the elevation angle of the terminal device or the beam angle corresponding to the terminal device.
  • the terminal device determines the first parameter, including: determining the first parameter from the fourth parameters corresponding to the at least one angle range based on the at least one angle range and the first angle.
  • the terminal device can make a selection based on the first angle and perform calculations based on the selected first parameter, without having to calculate the parameters for each area level, thereby helping to reduce the computational complexity on the terminal device side.
  • the method further includes: receiving, by the terminal device, a third parameter, the third parameter indicating at least one geographic range, each of the at least one geographic range corresponding to a fourth parameter; obtaining, by the terminal device, a location of the terminal device; and determining, by the terminal device, the first parameter, including: determining, based on the at least one geographic range and the location of the terminal device, the first parameter from the fourth parameters corresponding to the at least one geographic range.
  • the terminal device can make a selection based on its own location and perform calculations based on the selected first parameter, without having to calculate the parameters for each area level, thereby helping to reduce the computational complexity on the terminal device side.
  • the first mapping relationship satisfies:
  • RL(k,i) represents the three-dimensional coordinates corresponding to the reference position of the first area
  • k represents the identifier of the first area level
  • i represents the area identifier of the first area
  • i is a non-negative integer less than N spot_k
  • Re represents the parameters of the sphere where the first area is located
  • N spot_k represents the number of first areas
  • [] represents the decimal operator.
  • the first mapping relationship satisfies:
  • RL(k,i) represents the three-dimensional coordinates corresponding to the reference position of the first area
  • k represents the identifier of the first area level
  • i represents the area identifier of the first area
  • i is a non-negative integer less than N spot_k
  • Re represents the parameters of the sphere where the first area is located
  • N spot_k represents the number of first areas.
  • RL(k,i) represents the reference position of the first area
  • lon(k,i) represents the longitude corresponding to the reference position of the first area
  • lat(k,i) represents the latitude corresponding to the reference position of the first area
  • k represents the identifier of the first area level
  • i represents the area identifier of the first area
  • i is a non-negative integer less than N spot_k
  • N spot_k represents the number of first areas.
  • the method further includes: the terminal device receiving indication information of a first offset.
  • the terminal device determines, based on the first parameter and the first mapping relationship, a reference position of the first area, including: determining the reference position of the first area based on the first offset, the first parameter, and the first mapping relationship, so that the reference position of the first area determined by the terminal device is more accurate.
  • the first area includes at least one of the following types: a broadcast area, or a service area.
  • the broadcast area belongs to a geographical area covered by a broadcast beam
  • the service area belongs to a geographical area covered by a service beam.
  • the first area is the broadcast area, and the first area is the area where the terminal device is located.
  • the method further includes: the terminal device receiving access information, where the access information indicates an access configuration corresponding to the first area.
  • the terminal device initiates random access according to the access configuration corresponding to the first area.
  • the terminal device obtains the regional access configuration (such as the access configuration of the first region). If the region where the terminal device is located is the first region, the terminal device initiates random access based on the access configuration of the region where it is located, thereby reducing signaling overhead. Moreover, compared with the cell-based random access in the related art, the present application enables the terminal device to initiate random access more flexibly.
  • the first area is the service area, and the first area is the area where the terminal device is located.
  • the method further includes: the terminal device receiving service resource information, the service resource information indicating a communication resource configuration corresponding to the first area.
  • the terminal device performs service transmission according to the communication resource configuration corresponding to the first area.
  • the terminal device obtains the regional-level communication resource configuration (such as the communication resource configuration of the first region). If the region where the terminal device is located is the first region, the terminal device performs service transmission based on the communication resource configuration of the region where it is located, thereby reducing signaling overhead. Moreover, compared with the cell-based service transmission in the related art, this application enables the terminal device to perform service transmission more flexibly.
  • the method further includes: the terminal device triggers neighbor cell measurement or sends neighbor cell measurement results based on the reference position of the first area and the position of the terminal device, and the neighbor cell measurement results are used for cell switching or cell reselection.
  • the terminal device determines whether to trigger neighboring cell measurement based on the reference position of the first area and its own position, thereby reducing signaling overhead. Furthermore, compared to the related art of triggering neighboring cell measurement based on a cell-level reference position, the present application enables the terminal device to trigger neighboring cell measurement more flexibly.
  • the terminal device determines whether to send the neighboring cell measurement results based on the reference location of the first area and its own location, resulting in low signaling overhead. Furthermore, compared to related technologies that trigger the sending of neighboring cell measurement results based on a cell-level reference location, this application enables the terminal device to more flexibly trigger the sending of neighboring cell measurement results.
  • the method further includes: the terminal device receiving indication information of a first threshold.
  • the terminal device triggers neighboring cell measurement based on the reference position of the first area and the position of the terminal device, including: triggering the neighboring cell measurement when the distance between the reference position of the first area and the position of the terminal device is greater than or equal to the first threshold, so that the terminal device triggers the neighboring cell measurement in a timely and accurate manner.
  • the terminal device sends the neighboring area measurement result based on the reference position of the first area and the position of the terminal device, including: sending the neighboring area measurement result when the distance between the reference position of the first area and the position of the terminal device is greater than or equal to the first threshold, so that the terminal device triggers the sending of the neighboring area measurement result in a timely and accurate manner.
  • the method further includes: the terminal device triggering cell switching based on the reference position of the first area and the position of the terminal device, as well as the signal quality of the neighboring cell.
  • the terminal device determines whether to trigger a cell handover based on the reference position of the first area and its own position, as well as the signal quality of the neighboring cell, thereby reducing signaling overhead. Furthermore, compared to related technologies that trigger cell handover based on a cell-level reference position, this application enables the terminal device to trigger a cell handover more flexibly.
  • the method further includes: the terminal device receiving indication information of the first threshold and indication information of the second threshold.
  • the terminal device triggers cell switching based on the reference position of the first area and the position of the terminal device, as well as the signal quality of the neighboring cell, including: triggering the cell switching when the distance between the reference position of the first area and the position of the terminal device is greater than or equal to the first threshold, and the signal quality of the neighboring cell is greater than or equal to the second threshold, so that the terminal device triggers cell switching in a timely and accurate manner.
  • the first area is the area where the terminal device is located, and the first area belongs to a first cell.
  • the method also includes: the terminal device sends an interference measurement result, and the interference measurement result indicates the interference intensity of other cells to the first cell, so that the terminal device reports the interference measurement result with regional granularity, so that the network device performs interference coordination based on the interference measurement result.
  • the interference measurement result further indicates at least one of the following: the first area, or the first time period, the interference intensity is the interference intensity of the other cells to the first cell in the first time period.
  • a communication method is provided, which can be executed by a terminal device.
  • the "terminal device” in this application can refer to the terminal device itself, or a component in the terminal device (for example, a processor, a chip, or a chip system, etc.), or a logic module or software that can implement all or part of the terminal device functions.
  • the following description takes the execution subject as the terminal device as an example.
  • the method includes:
  • the terminal device determines a first parameter and a second parameter, where the first parameter indicates a first beam level, each beam included in the first beam level covers L areas out of X areas, the first parameter is associated with an angle, and the angle includes an angle of the beam opening angle or an elevation angle, and the second parameter indicates the number of areas X, where X and L are positive integers.
  • the terminal device determines a reference position of the first area based on the first beam level and the number of areas, and a first mapping relationship, where the first mapping relationship indicates a conversion relationship between the reference position of the first area and the first beam level and the number of areas, and the first area is one of the X areas.
  • the terminal device can determine the reference position of the first area based on the first parameter, the second parameter and the first mapping relationship.
  • the first area can be the area covered by beams with different beam angles, or the first area can be the area of the terminal device at different elevation angles, that is, the radius of the first area can have multiple values.
  • the present application can adapt to areas with different radii. That is to say, even for areas with different radii, the terminal device can determine the reference position of the first area based on the first parameter, the second parameter and the first mapping relationship, thereby improving the flexibility of the terminal device in determining the area.
  • the terminal device and the network device can interact based on the first parameter and the second parameter.
  • the terminal device and the network device can interact based on the first parameter and the second parameter.
  • signaling overhead is reduced.
  • the terminal device can communicate based on the reference location of the first area. For example, if the first area is an activation area of a network device, the terminal device can communicate with the network device if the terminal device is in the first area, thereby helping to improve communication efficiency.
  • the method further includes: the terminal device obtaining a location of the terminal device.
  • the terminal device determines a reference location of the area where the terminal device is located based on the location of the terminal device and the reference location of the first area, so that the terminal device communicates based on the area where the terminal device is located.
  • the method further includes: the terminal device obtaining an area identifier.
  • the terminal device determines a reference position of a first area based on the first beam level, the number of areas, and the first mapping relationship, including: determining a reference position of the first area based on the area identifier, the first beam level, the number of areas, and the first mapping relationship, the first area being the area corresponding to the area identifier, so that the terminal device communicates based on the area corresponding to the area identifier.
  • the second parameter indicates the number of regions, including: the second parameter includes the number of regions.
  • the second parameter includes a region radius, and the region radius is used to determine the number of regions.
  • the method further includes: the terminal device receiving a third parameter, the third parameter indicating at least one angle range, each angle range in the at least one angle range corresponding to a fourth parameter.
  • the terminal device obtains a first angle, where the first angle is an elevation angle of the terminal device or a beam angle corresponding to the terminal device.
  • the terminal device determines the first parameter, including: determining the first parameter from a fourth parameter corresponding to the at least one angle range based on the at least one angle range and the first angle.
  • the terminal device can make a selection based on the first angle and perform calculations based on the selected first parameter, without having to calculate the parameters for each beam level, thereby helping to reduce the computational complexity on the terminal device side.
  • the method further includes: the terminal device receiving a third parameter, the third parameter indicating at least one geographical range, each of the at least one geographical range corresponding to a fourth parameter.
  • the terminal device obtains the location of the terminal device.
  • the terminal device determines the first parameter, including: determining the first parameter from a fourth parameter corresponding to the at least one geographical range according to the at least one geographical range and the location of the terminal device.
  • the terminal device can make a selection based on its own position and perform calculations based on the selected first parameter, without the need to calculate the parameters for each beam level, thereby helping to reduce the computational complexity on the terminal device side.
  • the first mapping relationship satisfies:
  • RL(k,i) represents the three-dimensional coordinates corresponding to the reference position of the first area
  • k represents the identifier of the first beam level
  • i represents the area identifier of the first area
  • i is a non-negative integer less than N spot
  • Re represents the parameters of the sphere where the first area is located
  • N spot represents the number of areas
  • [] represents the decimal operator.
  • the first mapping relationship satisfies:
  • RL(k,i) represents the three-dimensional coordinates corresponding to the reference position of the first area
  • k represents the identifier of the first beam level
  • i represents the area identifier of the first area
  • i is a non-negative integer less than N spot
  • Re represents the parameters of the sphere where the first area is located
  • N spot represents the number of areas.
  • RL(k,i) represents the reference position of the first area
  • lon(k,i) represents the longitude corresponding to the reference position of the first area
  • lat(k,i) represents the latitude corresponding to the reference position of the first area
  • k represents the identifier of the first beam level
  • i represents the area identifier of the first area
  • i is a non-negative integer less than N spot
  • N spot represents the number of areas.
  • the first area includes at least one of the following types: a broadcast area, where the broadcast area belongs to a geographical area covered by a broadcast beam; or a service area, where the service area belongs to a geographical area covered by a service beam.
  • the first area is the broadcast area
  • the first area is the area where the terminal device is located
  • the first area is the area covered by the first beam.
  • the method further includes: the terminal device receiving access information, where the access information indicates an access configuration corresponding to the first beam.
  • the terminal device initiates random access according to the access configuration corresponding to the first beam.
  • the terminal device obtains the beam-level access configuration (such as the access configuration of the first beam). If the area where the terminal device is located is within the coverage of the first beam, the terminal device initiates random access according to the access configuration of the first beam, thereby reducing signaling overhead. Moreover, compared with the cell-based random access in the related art, the present application enables the terminal device to initiate random access more flexibly.
  • the first area is the service area
  • the first area is the area where the terminal device is located
  • the first area is the area covered by the first beam.
  • the method further includes: the terminal device receiving service resource information, the service resource information indicating the communication resource configuration corresponding to the first beam.
  • the terminal device performs service transmission according to the communication resource configuration corresponding to the first beam.
  • the terminal device obtains the beam-level communication resource configuration (such as the communication resource configuration of the first beam). If the area where the terminal device is located is within the coverage of the first beam, the terminal device performs service transmission according to the communication resource configuration of the first beam, thereby reducing signaling overhead. Moreover, compared with the cell-based service transmission in the related art, the present application enables the terminal device to perform service transmission more flexibly.
  • the first area is the area covered by the first beam
  • the method also includes: the terminal device triggers neighboring cell measurement or sends neighboring cell measurement results based on the reference position of the first beam and the position of the terminal device, and the neighboring cell measurement results are used for cell switching or cell reselection.
  • the terminal device determines whether to trigger neighboring cell measurement based on the reference position of the first beam and its own position, resulting in low signaling overhead. Furthermore, compared to related technologies that trigger neighboring cell measurement based on a cell-level reference position, this application enables the terminal device to trigger neighboring cell measurement more flexibly.
  • the terminal device determines whether to send the neighboring cell measurement results based on the reference position of the first beam and its own position, resulting in low signaling overhead. Furthermore, compared to related technologies that trigger the sending of neighboring cell measurement results based on a cell-level reference position, this application enables the terminal device to more flexibly trigger the sending of neighboring cell measurement results.
  • the method further includes: the terminal device receiving indication information of a first threshold.
  • the terminal device triggers neighboring cell measurement based on the reference position of the first beam and the position of the terminal device, including: triggering the neighboring cell measurement when the distance between the reference position of the first beam and the position of the terminal device is greater than or equal to the first threshold, so that the terminal device triggers the neighboring cell measurement in a timely and accurate manner.
  • the terminal device sends the neighboring area measurement result based on the reference position of the first beam and the position of the terminal device, including: sending the neighboring area measurement result when the distance between the reference position of the first beam and the position of the terminal device is greater than or equal to the first threshold, so that the terminal device triggers the sending of the neighboring area measurement result in a timely and accurate manner.
  • the first area is an area covered by a first beam
  • the method further includes: the terminal device triggers cell switching based on a reference position of the first beam, the position of the terminal device, and the signal quality of a neighboring cell.
  • the terminal device determines whether to trigger a cell handover based on the reference position of the first beam, its own position, and the signal quality of the neighboring cell, thereby reducing signaling overhead. Furthermore, compared to related technologies that trigger cell handover based on a cell-level reference position, this application enables the terminal device to trigger a cell handover more flexibly.
  • the method further includes: the terminal device receiving indication information of the first threshold and indication information of the second threshold.
  • the terminal device triggers cell switching based on the reference position of the first beam, the position of the terminal device, and the signal quality of the neighboring cell, including: triggering the cell switching when the distance between the reference position of the first beam and the position of the terminal device is greater than or equal to the first threshold, and the signal quality of the neighboring cell is greater than or equal to the second threshold, so that the terminal device triggers cell switching in a timely and accurate manner.
  • the reference position of the first beam is the reference position of the first area.
  • the reference position of the first beam is determined based on the reference position of each area covered by the first beam.
  • the first area is the area where the terminal device is located, and the first area belongs to a first cell.
  • the method also includes: the terminal device sends an interference measurement result, and the interference measurement result is used to characterize the interference intensity of other cells to the first cell, so that the network device performs interference coordination based on the interference measurement result.
  • the interference measurement result also indicates at least one of the following: a first beam, or a first time period, the first area is the area covered by the first beam, and the interference emphasis is the interference intensity of the other cells to the first cell in the first time period.
  • the method also includes: the terminal device obtains a first mapping relationship, the first mapping relationship indicates an area covered by the first beam, and the area covered by the first beam includes the first area.
  • the first area is the broadcast area
  • the first area is the area where the terminal device is located
  • the first area is the area covered by a first cell.
  • the method further includes: the terminal device receiving access information, the access information indicating an access configuration corresponding to the first cell.
  • the terminal device initiates random access according to the access configuration corresponding to the first cell.
  • the terminal device obtains the cell-level access configuration (such as the access configuration of the first cell). If the area where the terminal device is located belongs to the first cell, the terminal device initiates random access according to the access configuration of the cell where it is located, thereby reducing signaling overhead.
  • the cell-level access configuration such as the access configuration of the first cell.
  • the first area is the service area
  • the first area is the area where the terminal device is located
  • the first area is the area covered by a first cell.
  • the method further includes: the terminal device receiving service resource information, the service resource information indicating a communication resource configuration corresponding to the first cell.
  • the terminal device performs service transmission according to the communication resource configuration corresponding to the first cell.
  • the terminal device obtains the cell-level communication resource configuration (such as the communication resource configuration of the first cell). If the area where the terminal device is located belongs to the first cell, the terminal device performs service transmission according to the communication resource configuration of the cell where it is located, thereby reducing signaling overhead.
  • the cell-level communication resource configuration such as the communication resource configuration of the first cell.
  • the first area is the area where the terminal device is located, and the first area is the area covered by the first cell.
  • the method also includes: the terminal device triggers neighboring area measurement or sends neighboring area measurement results based on the reference position of the first cell and the position of the terminal device, and the neighboring area measurement results are used for cell switching or cell reselection.
  • the terminal device determines whether to trigger neighboring cell measurement based on the reference position of the first cell and its own position, and the signaling overhead is small.
  • the terminal device determines whether to send the neighboring cell measurement results based on the reference position of the first cell and its own position, and the signaling overhead is small.
  • the method further includes: the terminal device receiving indication information of a first threshold.
  • the terminal device triggers neighboring cell measurement based on the reference position of the first cell and the position of the terminal device, including: triggering the neighboring cell measurement when the distance between the reference position of the first cell and the position of the terminal device is greater than or equal to the first threshold, so that the terminal device triggers the neighboring cell measurement in a timely and accurate manner.
  • the terminal device sends the neighboring area measurement result based on the reference position of the first cell and the position of the terminal device, including: sending the neighboring area measurement result when the distance between the reference position of the first cell and the position of the terminal device is greater than or equal to the first threshold, so that the terminal device triggers the sending of the neighboring area measurement result in a timely and accurate manner.
  • the first area is the area where the terminal device is located, and the first area is the area covered by the first cell.
  • the method also includes: the terminal device triggers cell switching based on the reference position of the first cell and the position of the terminal device, as well as the signal quality of the neighboring cell.
  • the terminal device determines whether to trigger cell switching based on the reference position of the first cell and its own position, as well as the signal quality of the neighboring cell, and the signaling overhead is small.
  • the method further includes: the terminal device receiving indication information of the first threshold and indication information of the second threshold.
  • the terminal device triggers cell switching based on the reference position of the first cell, the position of the terminal device, and the signal quality of the neighboring cell, including: triggering the cell switching when the distance between the reference position of the first cell and the position of the terminal device is greater than or equal to the first threshold, and the signal quality of the neighboring cell is greater than or equal to the second threshold, so that the terminal device triggers cell switching in a timely and accurate manner.
  • the reference position of the first cell is the reference position of the first area.
  • the reference position of the first cell is determined based on the reference position of each area covered by the first cell.
  • the method also includes: the terminal device obtains a second mapping relationship, the second mapping relationship indicates the area covered by the first cell, and the area covered by the first cell includes the first area.
  • a communication method is provided, which can be executed by a first network device.
  • the "first network device” in this application can refer to the first network device itself, or a component in the first network device (for example, a processor, a chip, or a chip system, etc.), or a logic module or software that can implement all or part of the functions of the first network device.
  • the following description is based on the example of the execution subject being the first network device.
  • the method includes:
  • the first network device determines a first parameter, where the first parameter is associated with an angle, including a beam angle or an elevation angle.
  • the first network device sends the first parameter, where the first parameter is used to determine a reference position of a first area.
  • the first parameter indicates the first region number.
  • the first parameter indicates a first area radius.
  • the first parameter indicates a first area level
  • the first area level and the second parameter are used to determine a first area number
  • the second parameter is a second area number
  • the first parameter indicates a first area level
  • the first area level and the second parameter are used to determine a first area radius
  • the second parameter is a second area radius
  • the method further includes: the first network device sending a third parameter, wherein the third parameter indicates at least one angle range, and the at least one angle range is used to determine the first parameter.
  • the method further includes: the first network device sending a third parameter, the third parameter indicating at least one geographical range, and the at least one geographical range is used to determine the first parameter.
  • the method further includes: the first network device sending indication information of a first offset, where the first offset is used to determine a reference position of the first area.
  • the first area includes at least one of the following types: a broadcast area, or a service area.
  • the broadcast area belongs to a geographical area covered by a broadcast beam
  • the service area belongs to a geographical area covered by a service beam.
  • the method further includes: the first network device sending access information, where the access information indicates an access configuration corresponding to the first area.
  • the method also includes: the first network device sends business resource information, and the business resource information indicates the communication resource configuration corresponding to the first area.
  • the method also includes: the first network device sends indication information of a first threshold, where the first threshold is used to trigger neighboring cell measurement, trigger the sending of neighboring cell measurement results, or trigger cell switching.
  • the first area belongs to a first cell
  • the method further includes: the first network device receives an interference measurement result, where the interference measurement result indicates the interference intensity of other cells on the first cell.
  • the interference measurement result further indicates at least one of the following: the first area, or the first time period, the interference intensity is the interference intensity of the other cells to the first cell in the first time period.
  • a communication method is provided, which can be executed by a first network device.
  • the "first network device” in this application can refer to the first network device itself, or a component in the first network device (for example, a processor, a chip, or a chip system, etc.), or a logic module or software that can implement all or part of the functions of the first network device.
  • the following description is based on the example of the execution subject being the first network device.
  • the method includes:
  • the first network device determines a first parameter and a second parameter, where the first parameter indicates a first beam level, each beam included in the first beam level covers L areas out of X areas, the first parameter is associated with an angle, and the angle includes an angle of a beam opening angle or an elevation angle, and the second parameter indicates the number of areas X, where X and L are positive integers.
  • the first network device sends the first parameter and the second parameter, where the first parameter and the second parameter are used to determine a reference position of a first area, where the first area is one of the X areas.
  • the second parameter indicates the number of regions, including: the second parameter includes the number of regions.
  • the second parameter includes a region radius, and the region radius is used to determine the number of regions.
  • the method further includes: the first network device sending a third parameter, the third parameter indicating at least one angle range, and the at least one angle range is used to determine the first parameter.
  • the method further includes: the first network device sending a third parameter, the third parameter indicating at least one geographical range, and the at least one geographical range is used to determine the first parameter.
  • the first area includes at least one of the following types: a broadcast area, or a service area.
  • the broadcast area belongs to a geographical area covered by a broadcast beam
  • the service area belongs to a geographical area covered by a service beam.
  • the method further includes: the first network device sending access information, where the access information indicates an access configuration corresponding to the first beam.
  • the method also includes: the first network device sends service resource information, and the service resource information indicates the communication resource configuration corresponding to the first beam.
  • the method further includes: the first network device sends indication information of a first threshold, where the first threshold is used to trigger neighboring cell measurement, sending of neighboring cell measurement results, or cell switching.
  • the first area belongs to a first cell
  • the method also includes: the first network device receives an interference measurement result, and the interference measurement result is used to characterize the interference intensity of other cells on the first cell, so that the first network device performs interference coordination based on the interference measurement result.
  • the interference measurement result also indicates at least one of the following: a first beam, or a first time period, the first area is the area covered by the first beam, and the interference emphasis is the interference intensity of the other cells to the first cell in the first time period.
  • the method also includes: the first network device sends a first mapping relationship, the first mapping relationship indicates an area covered by the first beam, and the area covered by the first beam includes the first area.
  • the first area is an area covered by a first cell
  • the method further includes: the first network device sends access information, and the access information indicates an access configuration corresponding to the first cell.
  • the first area is an area covered by a first cell
  • the method further includes: the first network device sends service resource information, and the service resource information indicates a communication resource configuration corresponding to the first cell.
  • the method also includes: the first network device sends a second mapping relationship, where the second mapping relationship indicates an area covered by the first cell, and the area covered by the first cell includes the first area.
  • a communication method is provided, which can be executed by a first network device.
  • the "first network device” in this application can refer to the first network device itself, or a component in the first network device (for example, a processor, a chip, or a chip system, etc.), or a logic module or software that can implement all or part of the functions of the first network device.
  • the following description is based on the example of the execution subject being the first network device.
  • the method includes:
  • the first network device determines first information.
  • the first information indicates releasing communication resources of a first area or a first beam.
  • the first information indicates activating communication resources of a second area or a second beam.
  • the first network device sends the first information.
  • the satellite since the satellite has the characteristic of progressive switching, for example, the coverage area of the first network device moves into the first area, and the coverage area of the second network device moves out of the first area, which means that the second network device needs to release the communication resources of the first area. Therefore, the first information can instruct the second network device to release the communication resources of the first area, so as to realize information interaction between network devices through incremental updates, thereby realizing mobility management or interference coordination.
  • the first area may be an area covered by the first beam.
  • the first information may also indicate releasing the communication resources of the first beam, thereby instructing the second network device to release the communication resources of the first beam.
  • the first information can instruct the second network device to activate the communication resources of the second area, so as to realize information interaction between network devices through incremental updates, thereby realizing mobility management or interference coordination.
  • the second area may be an area covered by the second beam.
  • the first information may also indicate activation of the communication resources of the second beam, thereby instructing the second network device to release the communication resources of the second beam.
  • a communication method is provided, which can be executed by a second network device.
  • the "second network device” in this application can refer to the second network device itself, or a component in the second network device (for example, a processor, a chip, or a chip system, etc.), or a logic module or software that can implement all or part of the functions of the second network device.
  • the following description is based on the example of the execution subject being the second network device.
  • the method includes:
  • the second network device receives first information, wherein the first information indicates releasing communication resources of the first area or the first beam, or the first information indicates activating communication resources of the second area or the second beam.
  • the second network device releases the communication resources indicated by the first information.
  • the second network device activates the communication resources indicated by the first information.
  • a communication device for implementing the various methods described above.
  • the communication device includes modules, units, or means corresponding to the implementation methods.
  • the modules, units, or means can be implemented in hardware, software, or by hardware executing corresponding software implementations.
  • the hardware or software includes one or more modules or units corresponding to the functions.
  • the communication device may include a processing module and a transceiver module.
  • the processing module may be used to implement the processing functions in any of the above aspects and any possible implementations thereof.
  • the transceiver module also referred to as a transceiver unit, is used to implement the sending and/or receiving functions in any of the above aspects and any possible implementations thereof.
  • the transceiver module may be composed of a transceiver circuit, a transceiver, a transceiver, or a communication interface.
  • the transceiver module includes a sending module and/or a receiving module, which are used to implement the sending or receiving functions in any of the above aspects and any possible implementation methods.
  • a communication device comprising: a processor and a memory, wherein the processor and the memory are coupled, and the memory stores program instructions, and when the program instructions stored in the memory are executed by the processor, the communication device executes a method as in any one of the above aspects or any possible design of any one of the aspects.
  • a communication device comprising: a processor configured to execute a computer program or instructions to cause the communication device to perform the method described in any aspect or any possible design of any aspect.
  • the communication device further comprises a memory, which may be coupled to the processor or may exist independently of the processor, for example, the memory and the processor being two independent modules.
  • the memory may be located externally or internally of the communication device.
  • a computer-readable storage medium stores a computer program or instruction, which, when executed, causes the method described in any one of the above aspects or any possible design of any one of the above aspects to be executed.
  • a computer program product comprising instructions, which, when executed, enables the method described in any one of the above aspects or any possible design of the method to be executed.
  • the communication device provided in any of aspects 7 to 11 may be the terminal device of aspect 1 or aspect 2, or a component included in the terminal device, such as a chip or chip system; or the communication device may be the first network device of aspect 3, aspect 4, or aspect 5, or a component included in the first network device, such as a chip or chip system; or the communication device may be the second network device of aspect 6, or a component included in the second network device, such as a chip or chip system.
  • the device is a chip system, it may be composed of a chip or may include a chip and other discrete components.
  • the sending action/function of the communication device can be understood as output information
  • the receiving action/function of the communication device can be understood as input information
  • a communication device for implementing the method described in any one of the above aspects or any possible design of any one of the above aspects.
  • the communication device includes a terminal device, a first network device, a second network device, a chip system, or a chip.
  • the technical effects brought about by any design method in the seventh to twelfth aspects can refer to the technical effects brought about by different design methods in the first, second and fifth aspects, and will not be repeated here.
  • FIG1 is a satellite network architecture diagram in a transparent transmission mode provided by this application.
  • FIG2 is a satellite network architecture diagram in a regeneration mode provided by this application.
  • FIG3 is a diagram of a satellite network architecture in another regeneration mode provided by this application.
  • FIG4 is a diagram of a satellite network architecture in another regeneration mode provided by this application.
  • FIG5 is a network architecture diagram of the NTN and terrestrial network integration provided by the present application.
  • FIG6 is a schematic diagram of beam coverage in a non-staring mode and a staring mode in an NTN provided by the present application.
  • FIG7 a is a schematic diagram of a mapping relationship between beam angle and beam size provided in this application.
  • FIG7 b is a schematic diagram of a beam angle and elevation angle provided in this application.
  • FIG8 is a schematic diagram of a mapping relationship between beams and regions provided in this application.
  • FIG9 is a schematic diagram of a projection of a beam on the ground provided in this application.
  • FIG10 is a schematic diagram of an H3 geographic grid provided by this application.
  • FIG11 is a schematic diagram of a group switching scenario provided by this application.
  • FIG12 is a flow chart of a beam management process provided in this application.
  • FIG13 is a flow chart of a communication method provided in this application.
  • FIG14 is a schematic diagram of another mapping relationship between beams and regions provided in this application.
  • FIG15 is a flow chart of another communication method provided in this application.
  • FIG16 a is a flow chart of another communication method provided in the present application.
  • FIG16b is a schematic diagram of another mapping relationship between beams and regions provided in this application.
  • FIG17 is a flow chart of another communication method provided in this application.
  • FIG18 is a flow chart of another communication method provided in this application.
  • FIG19 is a flow chart of another communication method provided in this application.
  • FIG20 is a flow chart of another communication method provided in this application.
  • Figure 21a is a flow chart of another communication method provided by this application.
  • FIG21 b is a schematic diagram of another mapping relationship between beams and regions provided in this application.
  • FIG22 is a flow chart of another communication method provided in this application.
  • FIG23 is a flow chart of another communication method provided in this application.
  • Figure 24a is a flow chart of another communication method provided by this application.
  • Figure 24b is a schematic diagram of a reference position of a beam provided in this application.
  • FIG25 is a flow chart of another communication method provided in this application.
  • FIG26 is a schematic diagram of another mapping relationship between beams and regions provided in this application.
  • FIG27 is a schematic structural diagram of a communication device provided in this application.
  • FIG28 is a schematic structural diagram of another communication device provided in this application.
  • FIG29 is a schematic structural diagram of another communication device provided in this application.
  • plural means two or more than two.
  • At least one of the following or similar expressions refers to any combination of these items, including any combination of single or plural items.
  • at least one of a, b, or c can mean: a, b, c, a-b, a-c, b-c, or a-b-c.
  • the words “first” and “second” are used to distinguish between identical or similar items with substantially the same functions and effects. Those skilled in the art will understand that the words “first” and “second” do not limit the quantity or execution order, and the words “first” and “second” do not necessarily mean different.
  • words such as “exemplary” or “for example” are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as “exemplary” or “for example” in the embodiments of this application should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as “exemplary” or “for example” is intended to present the relevant concepts in a concrete manner to facilitate understanding.
  • the network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Ordinary technicians in this field will know that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.
  • NTN non-terrestrial networks
  • HAPS high altitude platform stations
  • drones such as satellite communication systems, high altitude platform stations (HAPS) communications, and drones.
  • IcaN integrated communication and navigation
  • GNSS global navigation satellite systems
  • NTN systems can be independently networked or integrated with traditional terrestrial mobile communication systems, such as the fourth generation (4G) communication system (e.g., long term evolution (LTE) system), worldwide interoperability for microwave access (WiMAX) communication system, fifth generation (5G) communication system (e.g., new radio (NR) system), device-to-device (D2D) communication system, machine-to-machine (M2M) communication system, Internet of Things (IoT) communication system, vehicle network communication system, and future mobile communication systems.
  • 4G fourth generation
  • LTE long term evolution
  • WiMAX worldwide interoperability for microwave access
  • 5G communication system e.g., new radio (NR) system
  • D2D device-to-device
  • M2M machine-to-machine
  • IoT Internet of Things
  • the above-mentioned communication system applicable to this application is only an example, and the communication system and communication scenarios applicable to this application are not limited to this.
  • the communication system and communication scenarios provided in this application do not impose any limitations on the solution of this application. They are uniformly explained here and will not be repeated below.
  • a communication system applicable to the solution of the present application may include at least one terminal device and at least one network device.
  • terminal devices may communicate with each other, with each other, and with each other via wired or wireless means.
  • the terminal device may be a user-side device with wireless transceiver capabilities, or may be a chip or chip system provided in the device.
  • the terminal device may also be referred to as user equipment (UE), terminal, access terminal, user unit, user station, mobile station (MS), remote station, remote terminal, mobile terminal (MT), user terminal, wireless communication device, user agent, or user device.
  • the terminal device may be a terminal device in the Internet of Things (IoT), vehicle-to-everything (V2X), D2D, M2M, 5G network, or future evolved public land mobile network (PLMN).
  • the terminal device may be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; it may also be deployed on water (such as ships); or it may be deployed in the air (such as aircraft, balloons, and satellites).
  • the terminal device can be a drone, an IoT device (e.g., a sensor, an electricity meter, a water meter, etc.), a V2X device, a station (ST) in a wireless local area network (WLAN), a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device (also called a wearable smart device), a tablet computer or a computer with wireless transceiver capabilities, a virtual reality (VR) device, or a similar device.
  • IoT device e.g., a sensor, an electricity meter, a water meter, etc.
  • V2X device e.g., a V2X device
  • ST wireless local area network
  • WLAN wireless local area network
  • SIP session
  • the present invention relates to wireless terminals for use in various fields, including virtual reality (VR) terminals, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical care, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, in-vehicle terminals, vehicles with vehicle-to-vehicle (V2V) communication capabilities, intelligent connected vehicles, and drones with unmanned aerial vehicle (UAV) to unmanned aerial vehicle (UAV) communication capabilities.
  • the terminal device may be mobile or fixed, and this application does not impose specific limitations on this.
  • the network device may be a network-side device with wireless transceiver functionality, or may be a chip, chip system, or module provided within the device.
  • the network device is located in the radio access network (RAN) of a mobile communication system and is used to provide access services to terminal devices.
  • RAN radio access network
  • the network device can be a wireless relay node or a wireless backhaul node.
  • the network device can function as a layer 1 relay device to regenerate physical layer signals (i.e., wireless frequency filtering, frequency conversion, and amplification) without any higher protocol layers.
  • a network device may implement some or all of the functions of a base station.
  • the network device may be an evolutionary Node B (eNB or eNodeB) in an LTE or evolved LTE system (LTE-Advanced, LTE-A), such as a traditional macro eNB and a micro eNB in a heterogeneous network scenario; or a next-generation Node B (gNodeB or gNB) in a 5G system; or a transmission reception point (TRP); or a base station in a future evolved PLMN; or a device implementing base station functions in IoT, V2X, D2D, or M2M.
  • LTE-A LTE-Advanced
  • LTE-A LTE-Advanced
  • gNodeB or gNB next-generation Node B
  • TRP transmission reception point
  • a base station in a future evolved PLMN or a device implementing base station functions in IoT, V2X, D2D, or M2M.
  • the network device may be a centralized unit (CU), a distributed unit (DU), a CU and a DU, a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU).
  • the CU and DU may be separate devices or included in the same network element, such as a baseband unit (BBU).
  • BBU baseband unit
  • the RU may be included in a radio frequency device or radio unit, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).
  • RRU remote radio unit
  • AAU active antenna unit
  • RRH remote radio head
  • the network device may be a network device or a module of a network device in an open radio access network (open RAN, ORAN) system.
  • ORAN open radio access network
  • CU may also be referred to as open (open, O)-CU
  • DU may also be referred to as O-DU
  • CU-CP may also be referred to as O-CU-CP
  • CU-UP may also be referred to as O-CU-UP
  • RU may also be referred to as O-RU.
  • Any of the CU (or CU-CP, CU-UP), DU and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.
  • the base stations in the embodiments of the present application may include various forms of base stations, such as: macro base stations, micro base stations (also called small stations), relay stations, access points, etc., and the embodiments of the present application do not specifically limit this.
  • the network devices in the embodiments of the present application can be deployed on non-ground platforms, such as low-altitude platforms (such as drones), high-altitude platforms (such as airplanes), or satellites. Therefore, the network devices in the embodiments of the present application can also be referred to as non-ground network devices.
  • the communication system may further include an NTN gateway (or gateway station).
  • the NTN gateway is deployed on the ground.
  • the NTN gateway can communicate with the satellite, and the link between the satellite and the NTN gateway is called a feeder link.
  • the NTN gateway when a satellite serves as a wireless relay node, or in other words, a satellite has relay and forwarding capabilities, the NTN gateway has base station functions or partial base station functions. In this case, the NTN gateway can function as a base station. Alternatively, the NTN gateway can be deployed separately from the base station. In other words, in addition to the NTN gateway, the communication system also includes a satellite base station deployed on the ground. Figure 1 illustrates the example of separate deployment of the NTN gateway and base station.
  • a satellite when a satellite can perform some or all of the functions of a base station, it has data processing capabilities and can be used as a base station.
  • the NTN gateway and the satellite can transmit user-plane data from the terminal device via the satellite radio interface (SRI).
  • SRI satellite radio interface
  • satellites can perform some or all of the functions of a base station.
  • inter-satellite links ISLs
  • a satellite can also perform the DU processing functions of a base station, or act as a DU.
  • the base station's CU processing functions can be deployed on the ground, with the CU and DU communicating via the NTN gateway using the F1 interface.
  • NG refers to the interface between the base station and the core network.
  • Uu refers to the interface between the base station and the terminal device.
  • Xn refers to the interface between base stations. It is understood that as communication systems evolve, the names of the interfaces between the base station and the core network, between the base station and the terminal device, and between base stations may also change, and this application does not specifically limit this.
  • a satellite when a satellite functions as a wireless relay node and has relay forwarding capabilities, it can be considered to be operating in transparent mode.
  • a satellite When a satellite has data processing capabilities and can perform some or all of the functions of a base station, it can be considered to be operating in regenerative mode.
  • a satellite may support only transparent mode, only regenerative mode, or both, and be able to switch between these two modes.
  • the NTN and terrestrial networks can be integrated.
  • Figure 5 illustrates a converged network architecture for the NTN and terrestrial networks, as provided in an embodiment of the present application.
  • satellites 1 and 2 operate in regenerative mode.
  • the satellites can serve as NTN base stations, or NTN base stations can be deployed on the satellites.
  • Satellite 3 operates in transparent transmission mode, requiring the deployment of an additional NTN base station.
  • NTN base station refers to a base station in the NTN.
  • the architecture may also include ground base stations, which refer to base stations in the ground network.
  • NTN base stations and ground base stations can be interconnected through a common core network.
  • the core network provides an interface to the data network, providing terminal devices with communication connections, authentication, management, policy control, and data service carrying.
  • the core network may include access and mobility management function (AMF) network elements, session management function (SMF) network elements, authentication server function (AUSF) network elements, policy control function (PCF) network elements, user plane function (UPF) network elements, and other network elements.
  • AMF access and mobility management function
  • SMF session management function
  • AUSF authentication server function
  • PCF policy control function
  • UPF user plane function
  • NTN base stations and terrestrial base stations can also achieve more timely assistance and interconnection through interfaces defined between base stations.
  • the interface between base stations can be an Xn interface
  • the interface between a base station and the core network can be an NG interface.
  • other implementations of the interface between base stations and the interface between a base station and the core network are also possible, and this application does not specifically limit this.
  • the satellite can provide services to the terminal device through a beam.
  • different beams can provide services to the terminal device through one or more of time division, frequency division, and space division.
  • the satellite can operate in a regeneration mode or a transparent transmission mode.
  • the satellite can operate in a non-staring (earth-moving) mode or a staring (earth-fixed or quasi-earth fixed) mode.
  • the satellite can be a low-earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, etc., without limitation.
  • satellites in the architectures described in Figures 1 to 5 can be replaced by non-ground payloads on other flying platforms such as drones and airplanes.
  • the step can be executed by the terminal device.
  • the "terminal device” in this application can refer to the terminal device itself, or a component in the terminal device (for example, a processor, chip, or chip system, etc.), or it can also be a logical module or software that can realize all or part of the functions of the terminal device.
  • the step can be executed by the network device.
  • the "network device” in this application can refer to the network device itself, or a component in the network device (for example, a processor, chip, or chip system, etc.), or a logical module or software that can realize all or part of the functions of the network device.
  • 5G NR has now entered the commercial deployment phase, moving from standardization.
  • the NR standard is primarily designed to address the unique characteristics of terrestrial communications, which provide high-speed, high-reliability, and low-latency communications for user terminals.
  • NTN communications Compared to terrestrial communications, NTN communications offer significant advantages, including global coverage, long-distance transmission, flexible networking, easy deployment, and freedom from geographical constraints. They have been widely used in a variety of fields, including maritime communications, positioning and navigation, disaster relief, scientific experiments, video broadcasting, and Earth observation. NTN networks can be integrated with terrestrial networks, leveraging their strengths and complementing their weaknesses to form a seamless, integrated global communications network covering land, sea, air, space, and ground, meeting the diverse service needs of users everywhere.
  • NTN can include low altitude platform (LAP) subnetwork, high altitude platform (HAP) subnetwork, and satellite communication subnetwork (SATCOM subnetwork).
  • LAP low altitude platform
  • HAP high altitude platform
  • SATCOM satellite communication subnetwork
  • base stations or base station functions are deployed on low-altitude flying platforms (such as drones) at an altitude of 0.1 km to 1 km from the ground to provide coverage for terminals; in the HAP subnetwork, base stations or base station functions are deployed on high-altitude flying platforms (such as airplanes) at an altitude of 8 km to 50 km from the ground to provide coverage for terminals; in the SATCOM subnetwork, base stations or base station functions are deployed on satellites at an altitude of more than 50 km from the ground to provide coverage for terminals.
  • low-altitude flying platforms such as drones
  • high-altitude flying platforms such as airplanes
  • satellites at an altitude of more than 50 km from the ground to provide coverage for terminals.
  • the satellite communication system can be divided into GEO satellite communication system, MEO satellite communication system and LEO satellite communication system.
  • the GEO satellite communication system is also known as the geostationary orbit satellite system. GEO satellites orbit at an altitude of 35,786 km and move at the same speed as the Earth's rotation, meaning that GEO satellites can remain stationary relative to the Earth. GEO satellite communication systems can provide large cell coverage, typically with a cell diameter of 500 km. However, GEO satellite communication also has significant disadvantages: 1) GEO satellite orbits are far from the Earth, resulting in high free-space propagation losses, which leads to tight communication link budgets.
  • Satellites To increase transmit/receive gain, satellites must be equipped with larger antennas; 2) Communication transmission latency is high, such as a round-trip delay of around 500 milliseconds, which cannot meet the needs of real-time services; 3) GEO orbital resources are relatively scarce, launch costs are high, and coverage of the Earth's polar regions is inadequate.
  • MEO satellites orbit at altitudes between 2,000 and 35,786 km, enabling global coverage with a relatively small number of satellites.
  • MEO satellites orbit at higher altitudes than LEO satellites, resulting in higher transmission latency compared to LEO satellite communications. Therefore, considering the advantages and disadvantages of MEO satellite communications, MEO satellites are primarily used for positioning and navigation.
  • the orbital altitude of LEO satellites is between 300 and 2000 km, which is lower than that of MEO satellites. They have the advantages of low transmission delay, low transmission loss, and relatively low launch cost.
  • next generation of satellite communication systems is generally showing a trend towards ultra-dense and heterogeneous systems.
  • the scale of satellites has grown from 66 in the Iridium constellation to 720 in the OneWeb constellation, and ultimately to the Starlink ultra-dense LEO satellite constellation of over 12,000.
  • satellite networks are becoming heterogeneous, evolving from traditional single-layer communication networks to multi-layer ones.
  • the functionality of communication satellite networks is also becoming increasingly complex and diverse, gradually becoming compatible with and supporting functions such as navigation augmentation, Earth observation, and multi-dimensional information processing on-orbit.
  • Non-gazing mode (earth-moving) and gazing (earth-fixed or quasi-earth fixed) mode:
  • beam operating modes can be generally divided into non-staring mode and staring mode.
  • non-staring mode the coverage area of the satellite beam moves with the satellite over a period of time (e.g., between time t0 and time t2).
  • staring mode the satellite dynamically adjusts the beam pointing direction over a period of time (e.g., between time t0 and time t2) so that the beam covers approximately the same area on the ground.
  • the embodiment of a beam in the protocol can be a spatial domain filter, or a spatial filter, or a spatial domain parameter, a spatial parameter, a spatial domain setting, a spatial setting, or quasi-colocation (QCL) information, a QCL assumption, a QCL indication, etc.
  • the beam can be indicated by a transmission configuration indication (TCI) state (TCI-state) parameter or a spatial relation parameter. Therefore, in this application, beam can be replaced by spatial filter, spatial filter, spatial parameter, spatial parameter, spatial setting, spatial setting, QCL information, QCL assumption, QCL indication, TCI-state, spatial relation, etc.
  • TCI transmission configuration indication
  • beam can be replaced by spatial filter, spatial filter, spatial parameter, spatial parameter, spatial setting, spatial setting, QCL information, QCL assumption, QCL indication, TCI-state, spatial relation, etc.
  • the above terms are also equivalent to each other.
  • the beam in this application can also be replaced by other terms representing beams, and this application does not limit them.
  • the beam size generally increases. For example, when the beam angle is 0 degrees, the beam diameter is approximately 30 kilometers (km). For another example, when the beam angle is 45 degrees, the beam diameter is approximately 72 km.
  • the beam angle is shown in Figure 7b.
  • the location of the network device is denoted as Q, and the center of the Earth is denoted as L.
  • the beam has a certain projection (or outline) on the sphere. P can be located at the edge of the projection.
  • Figure 7b shows a schematic diagram of the beam angle of the network device at location Q.
  • the beam angle can also be described in other ways, such as antenna angle.
  • This application takes the beam angle as an example for introduction.
  • the angle can also be replaced by the elevation angle.
  • the position of the terminal device can be recorded as P.
  • Figure 7b also shows a schematic diagram of the elevation angle of the terminal device at position P.
  • the position of the network device is recorded as Q
  • the position of the terminal device is recorded as P.
  • There is a certain conversion relationship between the beam angle and the elevation angle In this way, there is also a certain correlation between the beam size and the elevation angle. For example, as the elevation angle increases, the beam size generally tends to decrease.
  • region in the following embodiments of this application refers to a geographic region.
  • a region is fixed relative to the Earth, or it can be understood as referring to a fixed geographic area relative to the Earth.
  • a region can have at least one of the following attributes: shape, outline, size, radius, area, geographic location, etc.
  • the above-mentioned region fixed relative to the earth may also be referred to as a "wave position", "geographical region”, etc.
  • wave position a region fixed relative to the earth
  • geographical region a region fixed relative to the earth.
  • other names are also possible, and this application does not specifically limit the name of the region fixed relative to the earth.
  • the shapes, outlines, sizes, radii, and areas of different regions may or may not be the same. Different regions may have different geographical locations. Different regions may or may not overlap.
  • a region is fixed relative to the Earth, which can be understood as: the region's outline, size, or geographic location remains unchanged.
  • the region's outline, size, or geographic location does not change over time.
  • a region is fixed relative to the Earth, which can be understood as: the region's outline and points within the region can be described using an Earth-fixed coordinate system, or the coordinates of each point on the region's outline in the Earth-fixed coordinate system are fixed and unchanging.
  • the shape of the region may be a regular hexagon, or other shapes such as a regular pentagon, rectangle, circle, ellipse, etc.
  • the shape of the region may be an irregular shape, which is not limited.
  • the shape of a region can be defined by a protocol or by a network device.
  • the region shapes defined by different network devices can be the same or different.
  • the same network device can also define multiple region shapes.
  • the size, radius, and area of a region can be defined by a protocol or by a network device.
  • the size, radius, and area of a region defined by different network devices can be the same or different.
  • the same network device can also define multiple region sizes, multiple region radii, or multiple region areas.
  • the earth's surface may be divided into multiple regions, and the multiple regions may be indexed (eg, numbered).
  • the geographic location of a region is determined by the region's identifier. That is, the geographic location of a region can be obtained based on the region's identifier, or in other words, there is a correlation between the region's identifier and the region's geographic location. For example, multiple regions can be discretized on the earth, each corresponding to an identifier, and the geographic location of the region can be obtained based on the region's identifier.
  • the coverage area of a network device may refer to the maximum area that the network device can cover, or in other words, the coverage area of the network device indicates (or reflects) the maximum coverage capability of the network device.
  • the coverage area of the network device changes as the network device moves, that is, the coverage area of the network device may be different at different times.
  • the coverage area of the network device includes at least one of the above areas (ie, wave positions).
  • the area (ie, wave position) included in the coverage area of the network device may be different at different times.
  • the solid ellipse may represent the coverage area of the network device.
  • the areas represented by all pentagons and hexagons within the solid ellipse are the areas (i.e., wave positions) included in the coverage area of the network device.
  • the service area of a network device may refer to the maximum area that a beam of the network device can serve (or cover), or in other words, the service area of the network device indicates (or reflects) the maximum service capability of the network device.
  • the service area of a network device is smaller than or equal to the coverage area of the network device.
  • the service area of the network device can be the range indicated by the solid ellipse, in which case the service area of the network device is equal to the coverage area of the network device; alternatively, the service area of the network device can be smaller than the range indicated by the solid ellipse.
  • the service area of a network device changes as the network device moves, that is, the service area of the network device may be different at different times.
  • the service area of a network device includes at least one of the above-mentioned areas (ie, wave positions).
  • the area (ie, wave position) included in the service area of the network device may be different at different times.
  • the area currently being served (or covered) by the beam of a network device can be referred to as an active area or an activated area.
  • the area currently not being served (or covered) by the beam of a network device can be referred to as an inactive area or an inactive area.
  • the active area of a network device is one or more areas within the service area of the network device.
  • the beam of the network device serves (or covers) an activation area, that is, a part of the service area of the network device.
  • the beam of the network device serves (or covers) different activation areas, that is, different areas in the service area of the network device.
  • the activation area of the beam service of the network device includes areas x1, x2, and x3; as shown in (b) in FIG8 , at time T2, the activation area of the beam service of the network device includes areas y1, y2, y3, and y4.
  • the antenna pattern such as a given antenna model, can be used to calculate the corresponding contours of antenna gain or received power in different areas of the ground (which can be understood as the projection of the beam on the ground) to characterize the service area of the satellite/cell.
  • This contour can also be understood as the beam position.
  • Figure 9(a) shows the antenna gain pattern for a single GEO satellite 72-beam reference system.
  • the ellipse represents the projection of the beam on the ground, or the beam position.
  • Figure 9(b) shows the profile of the LEO satellite's beam in the latitude and longitude plane in non-staring mode.
  • the beam position and beam can be considered statically bound. Therefore, this solution is commonly used in GEO satellite networks or satellite networks operating in non-staring mode. However, in staring mode, the inclination angle between the satellite and a certain area of the ground changes dynamically, and the beam projection also changes accordingly. This static binding of beam position and beam may no longer be applicable.
  • the Earth's surface can be divided into regular pentagonal or hexagonal grids based on the H3 geographic grid, and the grids can be used to represent the service areas of satellites/cells.
  • the service area of a satellite/cell can include one or more grids, where each grid can be understood as a wave position.
  • This second possible implementation supports hierarchical addressing of wave positions.
  • the regular hexagon with the smallest area represents the wave position, and the regular hexagons with the remaining two areas can be used for hierarchical addressing of wave positions.
  • the following embodiments refer to the regular hexagons with the largest and second largest areas as the first and second regular hexagons, respectively.
  • the index of the first regular hexagon when performing hierarchical addressing of wave positions, can be understood as the first-level index of the wave position, the index of the second regular hexagon can be understood as the second-level index of the wave position, and the index of the regular hexagon with the smallest area can be understood as the third-level index of the wave position.
  • the first regular hexagon to which the wave position belongs can be first determined based on the first-level index
  • the second regular hexagon to which the wave position in the first regular hexagon belongs can be determined based on the second-level index
  • the wave position in the second regular hexagon can be determined based on the third-level index.
  • the second possible implementation currently supports only 16 different precisions of the beam radius, which makes it difficult to adapt to different payload capabilities (such as beam radius). For example, if the precision of the beam radius is an integer but the beam radius is not an integer, it may not be possible to accurately use the beam to represent the service area of the satellite/cell.
  • the wave position index value is usually indicated by 64 bits, and the signaling overhead is also relatively large.
  • load capacity can include at least one of the following: antenna capacity (such as the number of antenna units), or transmit power, etc. Among them, antenna capacity and/or transmit power affect the beam radius. In this way, different load capacities mean different beam radii. Accordingly, only 16 different precision beam radii are currently supported, which makes it difficult to adapt to different load capacities. It can be understood that only 16 different precision beam radii are currently supported, which makes it difficult to adapt to different beam radii.
  • the movement of the satellite may cause group handover of connected terminal devices in a certain area, or group reselection of idle or inactive terminal devices in the area.
  • UE-G1 which includes multiple UEs
  • UE-G2 which includes multiple UEs
  • sub-area 1 is served by one or more beams of satellite 2.
  • the movement of satellite 2 causes it to no longer be able to serve sub-area 1. Instead, one or more beams of satellite 1 take over serving sub-area 1.
  • the multiple UEs in UE-G1 undergo group handover, switching from satellite 2 to satellite 1.
  • the frequency of group switching is relatively high, about once every few seconds to tens of seconds.
  • network equipment such as a base station uses beam scanning within the cell's coverage area to time-share synchronization signal block (SSB) beams in different directions.
  • terminal devices use beam scanning to receive SSBs and measure the signal quality of each SSB beam.
  • SSB time-share synchronization signal block
  • the terminal device if it is in the radio resource control (RRC) idle state, it performs random access (RA) and sends a message 1 (Msg1) to the network device (e.g., a base station).
  • the message carries a random access preamble, which carries the SSB index corresponding to the SSB beam with the best signal quality.
  • the network device e.g., the base station
  • receives the random access preamble using beam scanning it can determine the SSB beam with the best signal quality as the downlink transmit beam.
  • the network device e.g., the base station
  • the beam used by the terminal device to receive downlink signals is the SSB beam with the best signal quality, it can reuse this downlink receive beam when sending uplink signals.
  • the terminal device sends the SSB measurement result to the network device (such as the base station) through a measurement report.
  • the network device (such as the base station) determines the downlink transmit beam based on the SSB measurement result and reuses the downlink beam when receiving the uplink signal.
  • the network device (such as the base station) can indicate the downlink transmit beam it has determined to the terminal device.
  • the terminal device can determine the downlink receive beam that matches the downlink transmit beam based on the downlink transmit beam and the beam pairing result.
  • network equipment such as base stations
  • CSI-RS channel state information-reference signal
  • BM beam management
  • CSI-RS for BM beam scanning near the downlink transmit beam
  • the terminal device feeds back the CSI-RS for MB beam measurement results to the network device (e.g., base station) via a measurement report.
  • the network device e.g., base station
  • determines a downlink transmit beam e.g., the optimal CSI-RS for BM beam
  • the terminal device can receive the CSI-RS for BM beam through beam scanning to determine a downlink receive beam (e.g., the optimal CSI-RS for BM beam) and reuse the downlink receive beam when sending uplink signals.
  • beam management in existing communication systems is typically based on signal quality and beam ID.
  • beam management especially beam switching
  • signal quality is inefficient because the near-far effect is not significant.
  • This configuration information includes beam configuration parameters, which the terminal device uses to determine the receive beam and transmit and receive time-frequency resources. This results in high signaling overhead.
  • the present application provides a communication method.
  • This method can be applied to the systems shown in Figures 1-5.
  • the method includes: a terminal device determining a first parameter, where the first parameter is associated with an angle, where the angle includes a beam angle or an elevation angle.
  • the terminal device determines a reference position of a first area based on the first parameter and a first mapping relationship, where the first mapping relationship indicates a conversion relationship between the first parameter and the reference position of the first area.
  • the terminal device when the terminal device determines the first parameter, the terminal device can determine the reference position of the first area based on the first parameter and the first mapping relationship.
  • the first area can be the area covered by beams of different beam angles, or the first area can be the area of the terminal device at different elevation angles, that is, the radius of the first area can have multiple values.
  • the present application can adapt to areas with different radii. That is to say, even for areas with different radii, the terminal device can determine the reference position of the first area based on the first parameter and the first mapping relationship, thereby improving the flexibility of the terminal device in determining the area.
  • the terminal device and the network device can interact based on the first parameter.
  • the wave position reference position in the H3 geographic grid and other methods since the number of bits required to indicate the first parameter is relatively small, the signaling overhead is small.
  • the area radius is 200km
  • there are approximately 78,702 areas (i.e., wave positions) in the world, and the reference position of each area (i.e., wave position) in the related technology occupies 48-bits, then a total of 48*78702 3.77Mbits is required to indicate the global reference position.
  • the present application only needs to indicate the first parameter. When there are only 16 values of the first parameter, only 4-bits are required to indicate the first parameter.
  • the terminal device side only needs to quickly calculate and obtain the global reference position based on the first parameter, and the signaling overhead is only 4-bits.
  • the terminal device can communicate based on the reference location of the first area. For example, if the first area is an activation area of the network device, the terminal device can communicate with the network device if the terminal device is in the first area, thereby helping to improve communication efficiency.
  • the communication method 1300 proposed in this embodiment of the present application includes the following operations:
  • the terminal device determines a first parameter.
  • the first parameter is associated with an angle.
  • the angle includes a beam angle or an elevation angle, which can be found in the glossary section and will not be further described.
  • the first parameter may indicate one or more of the number of regions, region radius, and region level.
  • a region may include one or more types.
  • a region may include at least one of the following types: a broadcast region or a service region.
  • a broadcast region is a geographic area covered by a broadcast beam
  • a service region is a geographic area covered by a service beam.
  • Table 1 shows the correlation between area level, area radius and beam angle:
  • K is a positive integer greater than or equal to 2.
  • the ground coverage area of each beam is smaller. Accordingly, the larger the beam angle, the larger the number of beams. Since one beam covers one area, the number of areas covered by that beam angle is larger. Conversely, if the beam angle of each of the multiple beams is large, the ground coverage area of each beam is larger. Accordingly, the smaller the number of beams covered by that beam angle. Since one beam covers one area, the number of areas covered by that beam angle is smaller.
  • the area radius and the number of areas satisfy a certain correlation relationship.
  • the area radius and the number of areas at this level satisfy the following formula (1):
  • N spot_k represents the number of areas corresponding to area level k
  • R spot_k represents the area radius corresponding to area level k
  • Re represents the parameters of the sphere where N spot_k areas are located.
  • the sphere containing the N spot_k areas is taken as the Earth as an example, and Re represents the Earth's radius, which can be 6378 km.
  • Re can also be a parameter smaller than or greater than the Earth's radius.
  • Re can be a pre-configured parameter or a parameter configured by the network device, which is not limited in this embodiment of the application.
  • the first parameter indicates the first number of areas.
  • the first number of areas is the number of areas corresponding to area level k, denoted as N spot_k , where 1 ⁇ k ⁇ K.
  • N spot_k the number of areas corresponding to area level
  • the area level can be one of K area levels.
  • the first parameter indicates a first area radius.
  • the first area radius is the area radius corresponding to area level k, denoted as R spot_k , where 1 ⁇ k ⁇ K.
  • R spot_k the area radius corresponding to area level
  • the area level can be one of the K areas.
  • the first parameter indicates a first region level, wherein the first region level is region level k. It can be understood that the first parameter indicates a region level, and the region level can be a region level among K regions.
  • the first parameter is associated with a location.
  • the location is determined based on an angle (e.g., beam angle).
  • the location can be understood as the location of the geographic area covered by one or more beams with beam angles within a certain angular range.
  • the beam within the beam angle range covers a certain geographical area, and the geographical area can be expressed by longitude or latitude.
  • the longitude range of the geographical area is: x 0 -x 1
  • the latitude range of the geographical area is: y 0 -y 1 .
  • the beam within the beam angle range covers a certain geographical area, and the geographical area can be represented by longitude or latitude.
  • the longitude range of the geographical area is: x1 - x2
  • the latitude range of the geographical area is: y1 - y2 .
  • the terminal device may determine the number of first areas based on the first parameter, specifically:
  • Case 1 The first parameter indicates the first region number.
  • the first parameter indicates the radius of the first area.
  • the terminal device can determine the number of first areas based on formula (1) and the radius of the first area.
  • the first parameter indicates the first area level.
  • the terminal device determines the number of first areas based on the first area level and the second parameter.
  • the second parameter may indicate the number of second areas.
  • the second parameter may be a preconfigured parameter or a parameter configured by the network device, and is not limited in this embodiment of the present application.
  • the second parameter can be understood as a baseline parameter.
  • the number of areas indicated by the second parameter can be understood as the baseline number of areas, such as N spot_base .
  • the first area level indicated by the first parameter is k
  • N spot_k represents the number of first areas
  • k represents the first area level
  • N spot_base represents the number of second areas.
  • the first parameter indicates the first area level.
  • the terminal device determines the first area radius based on the first area level and the second parameter.
  • the second parameter may indicate the second area radius.
  • the second parameter may be a preconfigured parameter or a parameter configured by the network device. This application does not limit the configuration method of this second parameter.
  • the second parameter can be understood as a reference parameter.
  • the area radius indicated by the second parameter can be understood as a reference area radius, such as R spot_base .
  • R spot_k k ⁇ R spot_base .
  • R spot_k represents the first area radius
  • k represents the first area level
  • R spot_base represents the second area radius.
  • the terminal device can then determine the number of first areas based on formula (1) and the first area radius.
  • the terminal device After determining the first parameter, the terminal device executes S1302:
  • the terminal device determines a reference position of the first area according to the first parameter and the first mapping relationship.
  • the first mapping relationship satisfies the following formula (2):
  • RL(k,i) represents the three-dimensional coordinates corresponding to the reference position of the first region
  • k represents the identifier of the first region level
  • i represents the region identifier of the first region
  • i is a non-negative integer less than N spot_k
  • Re represents the parameters of the sphere where the first region is located
  • N spot_k represents the number of first regions
  • [] represents the decimal operator.
  • the terminal device can obtain the reference position of each area in the N spot_k areas based on the above formula (2).
  • i represents the area identifier of the first area (e.g., i is the area number of the first area, used to identify the first area). It can be understood that each area in the N spot_k areas can be regarded as a first area. Accordingly, based on the above formula (2), the terminal device can traverse each first area in the N spot_k areas, thereby obtaining the reference position of each first area in the N spot_k areas.
  • the projection of RL(k,i) on the unit square is RL(k, xi , yi ).
  • the unit square specifically refers to a square in the Cartesian plane with corners located at the four points (0,0), (1,0), (0,1) and (1,1).
  • RL(k, xi ) represents the horizontal coordinate of the reference position of the first region on the projection of the unit square where the first region is located
  • RL(k, yi ) represents the vertical coordinate of the reference position of the first region on the projection of the unit square where the first region is located
  • i represents the region identifier of the first region
  • Nspot_k represents the number of first regions
  • [] represents the decimal operator.
  • the above formula (2) can adopt the Cartesian coordinates RL( xi , yi ) of the Fibonacci grid.
  • RL(k, xi ) represents the abscissa of the reference position of the first wave position in Cartesian coordinates
  • RL(k, yi ) represents the ordinate of the reference position of the first wave position in Cartesian coordinates
  • i represents the region identifier of the first region
  • Nspot_k represents the number of first regions
  • frac() represents the decimal point operator.
  • the first mapping relationship satisfies the following formula (5):
  • RL(k,i) represents the three-dimensional coordinates corresponding to the reference position of the first area
  • k represents the identifier of the first area level
  • i represents the area identifier of the first area
  • i is a non-negative integer less than N spot_k
  • Re represents the parameters of the sphere where the first area is located
  • N spot_k represents the number of first areas.
  • RL(k,i) represents the reference position of the first area
  • lon(k,i) represents the longitude corresponding to the reference position of the first area
  • lat(k,i) represents the latitude corresponding to the reference position of the first area
  • k represents the identifier of the first area level
  • i represents the area identifier of the first area
  • i is a non-negative integer less than N spot_k
  • N spot_k represents the number of first areas.
  • the unit of the longitude lon(k,i) corresponding to the reference position of the first area may be radians.
  • the unit of the latitude lat(k,i) corresponding to the reference position of the first area may also be radians.
  • the first area is introduced as follows:
  • Example 1 The first area is any one of the N spot_k areas indicated by the first parameter.
  • the terminal device can obtain the reference position of any of the N spot_k areas based on the above formulas. In other words, the terminal device can obtain the topology of the N spot_k areas, the coverage of the N spot_k areas, or the adjacency relationship between different areas in the N spot_k areas.
  • Example 1 can be understood as: the terminal device can determine the reference position of each area in N spot_k areas. Further, as shown in Figure 15, the method also includes S1303 and S1304:
  • the terminal device may obtain its own GNSS position.
  • the terminal device determines the reference position of the area where the terminal device is located based on its own position and the reference position of the first area.
  • the first region is any one of the N spot_k regions indicated by the first parameter.
  • the terminal device selects, from the reference positions of the N spot_k regions, the region whose reference position is closest to its own position as the region where the terminal device is located. Accordingly, the terminal device can determine the reference position of its own region.
  • the terminal device can determine the reference position of its own area.
  • the first area is an area indicated by an area identifier of the network device.
  • Example 2 as shown in FIG16a , the method further includes S1305:
  • the terminal device obtains an area identifier.
  • the region identifier is used to identify a region.
  • the region identifier is used to identify one of the N spot_k regions.
  • the network device sends the area identifier to the terminal device, and correspondingly, the terminal device receives the area identifier from the network device.
  • S1302 includes S1302a:
  • the terminal device determines a reference position of the first area according to the area identifier, the first parameter and the first mapping relationship.
  • the first area is the area corresponding to the area identifier.
  • the area identifier is an area number.
  • the area identifier of the first area among the N spot_k areas is 1, the area identifier of the second area among the N spot_k areas is 2, the area identifier of the third area among the N spot_k areas is 3, and so on.
  • the area identifier is i
  • the first area is the i-th area among the N spot_k areas.
  • the terminal device determines the reference position of the i-th area among the N spot_k areas based on the above-mentioned area identifier, the first parameter and the first mapping relationship. Accordingly, the terminal device can also determine the reference position of the first area.
  • the terminal device can determine the reference position of the area identified by the area identifier.
  • the method further includes S1306:
  • S1306 The network device sends indication information of the first offset to the terminal device.
  • the terminal device receives the indication information of the first offset from the network device.
  • the first offset is used to adjust the reference position of the first area.
  • S1302 includes S1302b:
  • the terminal device determines a reference position of the first area according to the first offset, the first parameter and the first mapping relationship.
  • the terminal device obtains a position parameter based on any one of the above formulas (2) to (6), such as the position indicated by the circle in FIG16b .
  • the terminal device then adjusts the position parameter according to the first offset to obtain a reference position of the first area, such as the position indicated by the diamond icon in FIG16b .
  • the terminal device can be adjusted according to the first offset, so that the reference position of the area is more accurate.
  • this application defines at least one regional level.
  • the network device can send down parameters corresponding to a certain regional level.
  • the network device has learned the elevation angle of the terminal device and sends down relevant parameters of the regional level corresponding to the elevation angle (such as one or more of the regional level, number of regions, and regional radius).
  • the network device can also send down parameters corresponding to multiple regional levels.
  • the terminal device may receive parameters corresponding to a certain regional level, or may receive parameters corresponding to multiple regional levels.
  • the implementation process of S1301 is introduced through two cases (the following cases 1-2):
  • S1301 includes S1301a:
  • S1301a The network device sends a first parameter to the terminal device.
  • the terminal device receives the first parameter from the network device.
  • the first parameter is associated with the elevation angle of the terminal device, for example, the elevation angle of the terminal device is within the angle range corresponding to the first parameter.
  • the first parameter indicates an area level, and/or the first parameter indicates the number of areas corresponding to an area level, and/or the first parameter indicates an area radius corresponding to an area level.
  • the first parameter can be carried in one of the following: radio resource control (RRC) signaling, or downlink control information (DCI), or medium access control-control element (MAC-CE).
  • RRC radio resource control
  • DCI downlink control information
  • MAC-CE medium access control-control element
  • S1301 includes S1301b or S1301c, and the terminal device also executes S1311 and S1312, which are described in detail as follows:
  • the network device sends at least two fourth parameters to the terminal device.
  • the terminal device receives at least two fourth parameters from the network device.
  • each fourth parameter indicates a region number, and/or each fourth parameter indicates a region radius, and/or each fourth parameter indicates a region level.
  • one fourth parameter indicates area level 1
  • the other fourth parameter indicates area level 2.
  • each fourth parameter indicates an area level, and/or each fourth parameter indicates the number of areas corresponding to an area level, and/or each fourth parameter indicates the area radius corresponding to an area level.
  • different fourth parameters in the at least two fourth parameters correspond to different angle ranges.
  • the at least two fourth parameters correspond to two or more angle ranges among the K angle ranges.
  • different fourth parameters in the at least two fourth parameters correspond to different geographical ranges.
  • the at least two fourth parameters correspond to two or more geographical ranges among the K geographical ranges.
  • S1312 The network device sends the third parameter to the terminal device.
  • the terminal device receives the third parameter from the network device.
  • the third parameter indicates at least one angle range, and each angle range corresponds to a fourth parameter.
  • the third parameter indicates at least one geographical range, and each geographical range corresponds to a fourth parameter.
  • the third parameter indicates two geographic ranges, such as geographic range 1 and geographic range 2.
  • the longitude of geographic range 1 is x 0 -x 1
  • the latitude of geographic range 1 is y 0 -y 1
  • the longitude of geographic range 2 is x 1 -x 2
  • the latitude of geographic range 2 is y 1 -y 2 .
  • the third parameter may be carried in one of the following: RRC signaling, or DCI, or MAC-CE.
  • the third parameter and the fourth parameter can be carried in the same message or in different messages, and this application does not limit this.
  • the terminal device further executes S1321:
  • the terminal device obtains a first angle.
  • the first angle is the elevation angle of the terminal device, or the first angle is the beam angle corresponding to the terminal device.
  • the terminal device obtains its own position and determines the first angle according to its own position. Please refer to the relevant technology and will not repeat it here.
  • the terminal device further executes S1301b:
  • the terminal device determines the first parameter from the fourth parameter corresponding to the at least one angle range based on the at least one angle range indicated by the third parameter and the first angle.
  • the fourth parameter corresponding to the angle range is the first parameter.
  • the first angle is 10°, and within the range of 0 ⁇ 25, the first parameter is a parameter corresponding to area level 1.
  • the terminal device can make a selection based on the first angle and perform calculations based on the selected first parameter, thereby helping to reduce the computational complexity of the terminal device.
  • the terminal device further executes S1322:
  • S1322 The location of the terminal device itself.
  • the terminal device further executes S1301c:
  • the terminal device determines a first parameter from a fourth parameter corresponding to the at least one geographical range indicated by the third parameter and the location of the terminal device.
  • the fourth parameter corresponding to the geographical range is the first parameter.
  • the location of the terminal device is (x 0 , y 0 ), that is, the longitude is x 0 and the latitude is y 0 , then the location of the terminal device is within the range of (x 0 -x 1 ,y 0 -y 1 ), and the first parameter is the parameter corresponding to area level 1.
  • the terminal device can make a selection based on its own location and perform calculations based on the selected first parameter, thereby helping to reduce the computational complexity of the terminal device.
  • the above describes the process of determining the reference position of the first area by the terminal device.
  • the reference position of the first area is used to assist the terminal device in communication. It can be understood that the terminal device performs at least one of the following communication processes based on the reference position of the first area: initial access, service data transmission, mobility management, and interference coordination.
  • the following introduces the communication process performed by the terminal device based on the reference position of the first area.
  • the access scenario Taking the case where the N spot_k areas are broadcast areas and the first area is the area where the terminal device is located as an example, the following describes the access scenario:
  • the method further includes the following operations:
  • S1331a The network device sends information 2a to the terminal device.
  • the terminal device receives information 2a from the network device.
  • Information 2a indicates the access configuration corresponding to the first area. It can be understood that information 2a belongs to access information and belongs to area-level access configuration.
  • the access configuration includes one or more of the following: random access channel occasion (RO) resource configuration, preamble configuration, timing advance (TA), accessible time period, etc.
  • RO random access channel occasion
  • TA timing advance
  • information 2a only indicates the access configuration corresponding to the first area, and does not indicate the access configuration corresponding to other areas.
  • the network device sends the access configuration of the corresponding area for different areas.
  • the above-mentioned N spot_k areas are 4 areas, which are respectively recorded as area 1, area 2, area 3 and area 4.
  • the network device indicates the access configuration of area 1 through information X1, the network device indicates the access configuration of area 2 through information X2, the network device indicates the access configuration of area 3 through information X3, and the network device indicates the access configuration of area 4 through information X4.
  • the information 2a is the above-mentioned information X1.
  • the information 2a is the above-mentioned information X3.
  • information 2a indicates the access configuration of at least two areas among the above-mentioned N spot_k areas.
  • the network device indicates the access configuration of at least two areas through the same information.
  • the above-mentioned N spot_k areas are 4 areas, which are respectively recorded as area 1, area 2, area 3 and area 4.
  • area 1 and area 2 belong to the same cell, and the network device indicates the access configuration of area 1 and area 2 through information Y1.
  • Area 3 and area 4 belong to the same cell, and the network device indicates the access configuration of area 3 and area 4 through information Y2.
  • the information 2a is the above-mentioned information Y1.
  • the information 2a is the above-mentioned information Y3.
  • the terminal device initiates random access according to the access configuration corresponding to the first area.
  • the terminal device determines the access configuration of the first area from the information 2a according to the area identifier of the first area, and initiates random access according to the access configuration corresponding to the first area.
  • the terminal device when the network device indicates the area-level access configuration (such as the access configuration of the first area) to the terminal device, the terminal device initiates random access according to the access configuration of its own area, thereby reducing signaling overhead.
  • the area-level access configuration such as the access configuration of the first area
  • the area identifier in this application occupies fewer bits.
  • the area identifier can be represented by 8 bits.
  • the area identifier is transmitted between the terminal device and the network device, less communication resources can be occupied and the signaling overhead is small.
  • the present application can be described in the form of ‘one area identifier + number of areas’, such as ⁇ bw_x0, k0 ⁇ or ⁇ bw_x0, k0+1 ⁇ , without sending the area identifier of each area in the signaling, thereby further saving signaling overhead.
  • the present application can provide regional-level (i.e., wave-level) access configuration, so that the terminal device can initiate random access based on the regional (i.e., wave-level) access configuration.
  • the present application enables the terminal device to initiate random access more flexibly.
  • the data transmission process is described as follows:
  • the method further includes the following operations:
  • S1331b The network device sends information 2b to the terminal device.
  • the terminal device receives information 2b from the network device.
  • Information 2b indicates the communication resource configuration corresponding to the first area. It can be understood that information 2b belongs to business resource information and belongs to regional-level communication resource configuration.
  • the communication resource configuration includes one or more of the following: frequency resources (such as bandwidth part (BWP)), polarization, available time period, etc.
  • frequency resources such as bandwidth part (BWP)
  • BWP bandwidth part
  • polarization available time period
  • information 2b only indicates the communication resource configuration corresponding to the first area, and does not indicate the communication resource configuration corresponding to other areas. It can be understood that in N spot_k areas, the network device sends the communication resource configuration of the area to different areas.
  • the information 2b indicates the communication resource configuration of at least two areas among the N spot_k areas. It can be understood that the network device indicates the communication resource configuration of at least two areas through the same information.
  • the terminal device performs service transmission according to the communication resource configuration corresponding to the first area.
  • the terminal device determines the communication resource configuration of the first area from the information 2b, and performs service transmission according to the communication resource configuration corresponding to the first area.
  • the terminal device when the network device indicates the regional-level communication resource configuration (such as the communication resource configuration of the first area) to the terminal device, the terminal device performs service transmission according to the communication resource configuration of its own area, thereby reducing signaling overhead.
  • the regional-level communication resource configuration such as the communication resource configuration of the first area
  • the area identifier in this application occupies fewer bits.
  • the area identifier can be represented by 8 bits.
  • the area identifier is transmitted between the terminal device and the network device, less communication resources can be occupied and the signaling overhead is small.
  • the present application can be described in the form of ‘one area identifier + number of areas’, such as ⁇ bw_x0, k0 ⁇ or ⁇ bw_x0, k0+1 ⁇ , without sending the area identifier of each area in the signaling, thereby further saving signaling overhead.
  • the terminal device when the area where the terminal device is located is the first area, after the terminal device obtains the area identifier of the first area, the terminal device also sends the area identifier of the first area to the network device to replace its own precise location information, to assist the location verification and service resource allocation on the network device side, thereby further saving signaling overhead.
  • the present application can provide regional-level (i.e., wave-level) communication resource configuration, so that the terminal device can perform service transmission based on the regional (i.e., wave-level) communication resource configuration.
  • the present application can enable the terminal device to perform service transmission more flexibly.
  • the mobility management scenario is introduced by taking the case where the first area is the area where the terminal device is located as an example:
  • the method further includes the following operations:
  • the terminal device triggers neighboring cell measurement based on the reference position of the first area and its own position.
  • threshold Y can be understood as a reselection distance threshold, such as the size of threshold Y is: k*region radius.
  • the neighboring cell measurement result is used for cell handover or cell reselection, and reference may be made to related technologies, which will not be described in detail here.
  • the terminal device determines whether to trigger neighboring cell measurement based on the reference position of the first area and its own position, and the signaling overhead is small.
  • the terminal device uses the reference position of its own area to determine whether to trigger neighboring cell measurement, instead of the traditional method of determining whether to trigger neighboring cell measurement based on reference position information (usually the reference position includes three-dimensional coordinates, and the signaling overhead can reach 72 bits). That is, the network device does not need to send down reference position information, and the signaling overhead is low.
  • the terminal device can determine whether to trigger neighbor cell measurement based on the area where it is located (i.e., the wave position). Compared with the related art of triggering neighbor cell measurement based on the cell-level reference position, the present application enables the terminal device to trigger neighbor cell measurement more flexibly.
  • the method further includes the following operations:
  • the terminal device sends the neighboring area measurement results based on the reference position of the first area and its own position.
  • the neighboring area measurement result is sent. Conversely, if the distance between the reference position of the first area and the own position is less than (or equal to) the threshold Y, the neighboring area measurement result is not sent temporarily.
  • the terminal device determines whether to send the neighboring area measurement result based on the reference position of the first area and its own position, and the signaling overhead is small.
  • the terminal device uses the reference position of its own area to determine whether to trigger the transmission of neighboring cell measurement results, replacing the traditional method of determining whether to trigger the transmission of neighboring cell measurement results based on reference position information (usually the reference position includes three-dimensional coordinates, and the signaling overhead can reach 72 bits). That is, the network device does not need to send down reference position information, and the signaling overhead is low.
  • the terminal device can determine whether to trigger the sending of neighboring area measurement results based on its own area (ie, wave position). Compared with the related art of triggering the sending of neighboring area measurement results based on the cell-level reference position, the present application enables the terminal device to trigger the sending of neighboring area measurement results more flexibly.
  • the method further includes the following operations:
  • the terminal device triggers cell switching based on the reference position of the first area, its own position, and the signal quality of the neighboring cell.
  • the distance between the reference position of the first area and the own position is greater than (or equal to) threshold Y, and the neighboring cell signal quality is greater than (or equal to) threshold Z, cell handover is triggered. Conversely, if the distance between the reference position of the first area and the own position is less than (or equal to) threshold Y, and/or the neighboring cell signal quality is less than threshold Z, cell handover is not triggered temporarily.
  • the terminal device determines whether to trigger cell switching based on the reference position of the first area and its own position, as well as the signal quality of the neighboring area, and the signaling overhead is small.
  • the terminal device uses the reference location of its own area to determine whether to trigger cell switching, instead of the traditional method of determining whether to trigger cell switching based on reference location information (generally speaking, the reference location includes three-dimensional coordinates, and the signaling overhead can reach 72 bits). That is, the network device does not need to send down reference location information, and the signaling overhead is low.
  • the terminal device can determine whether to trigger cell switching based on the area where it is located (i.e., the wave position). Compared with the related technology of triggering cell switching based on cell-level reference position, this application enables the terminal device to trigger cell switching more flexibly.
  • thresholds can be pre-configured parameters or parameters configured by the network device, and this application does not limit this.
  • the operations performed by the target network device (such as the target satellite) and the source network device (such as the source satellite) include:
  • the target network device e.g., target satellite
  • the target network device carries a region identifier (i.e., beam position ID) via the physical downlink control channel (PDCCH).
  • the terminal device determines its nearest region and obtains the PDCCH information based on the region identifier of the nearest region. If the information is successfully obtained, access to the target network device (e.g., target satellite) is initiated on the resources indicated by the PDCCH.
  • the resources indicated by the PDCCH include one or more of the following: target beam ID, RO resources, dedicated preamble, etc.
  • the target beam can be the beam corresponding to the handover dedicated broadcast signal block (HO-SSB).
  • HO-SSB handover dedicated broadcast signal block
  • the source network device (e.g., source satellite) carries different region identifiers (i.e., beam IDs) via the MAC-CE header.
  • the terminal device determines its own region and, based on the region identifier, determines whether to receive the MAC-CE. If received, it accesses the target network device (e.g., target satellite) using the resources indicated by the MAC-CE based on its own device identifier (e.g., UE-ID).
  • the resources indicated by the MAC-CE may include one or more of the following: the identifier of the target network device (e.g., target satellite ID), target beam ID, RO resources, dedicated preamble, etc.
  • the interference coordination process is introduced:
  • the method further includes the following operations:
  • the terminal device sends an interference measurement result to the network device.
  • the network device receives the interference measurement result from the terminal device.
  • the terminal device performs interference measurement on the channel state information-interference measurement (CSI-IM) resource to obtain the interference measurement result, thereby emphasizing the interference of other cells to the first cell.
  • CSI-IM channel state information-interference measurement
  • the interference measurement result can also indicate the first area (for example, the interference measurement result includes the area identifier of the first area) so that the network device knows the cell corresponding to the interference measurement result.
  • the interference measurement result is the interference intensity of other cells on the first cell in the first time period
  • the interference measurement result further indicates the first time period, so that the network device learns the time period corresponding to the interference measurement result.
  • the network device can perform interference coordination based on the received interference measurement results.
  • the communication method 1300 of the present application is introduced by taking an example in which one beam corresponds to one area and the area radius at different levels (such as area level) is different.
  • one beam corresponds to one or more areas, and the area radius at different levels (such as beam levels) is the same.
  • the communication method 2100 proposed in this embodiment of the present application includes the following operations:
  • the terminal device determines a first parameter and a second parameter.
  • the first parameter indicates the first beam level.
  • Each beam included in the first beam level covers L of the X regions, where X and L are positive integers.
  • the first beam level is determined based on the angle, which includes the beam opening angle or elevation angle. For details, see Table 1.
  • the second parameter indicates the number of regions, X.
  • Table 3 shows the correlation between beam level, beam size, and beam angle:
  • K is a positive integer greater than or equal to 2.
  • the beam may be beam 1, which covers one area, namely, area SC#6.
  • the beam may be beam 2, which covers two areas, namely, areas SC#18 and SC#20.
  • the beam level is associated with the angle, and different beam levels are associated with different angle ranges.
  • beam levels are associated with locations, with different beam levels associated with different locations.
  • the location is determined based on an angle (e.g., beam angle).
  • the location can be understood as the geographic area covered by one or more beams with beam angles within a certain range.
  • the beam within the beam angle range covers a certain geographical area, and the geographical area can be expressed by longitude or latitude.
  • the longitude range of the geographical area is: x 0 -x 1
  • the latitude range of the geographical area is: y 0 -y 1 .
  • the beam within the beam angle range covers a certain geographical area, and the geographical area can be expressed by longitude or latitude.
  • the longitude range of the geographical area is: x 1 -x 2
  • the latitude range of the geographical area is: y 1 -y 2 .
  • the region radius and the number of regions satisfy a certain correlation.
  • the region radius and the number of regions satisfy the following formula (7):
  • N spot represents the number of areas
  • R spot represents the area radius
  • Re represents the parameters of the sphere where the N spot areas are located. Please refer to the introduction of formula (1) and will not be repeated here.
  • the second parameter includes the number of areas, such as N spot .
  • the second parameter indicates an area radius, such as R spot .
  • the terminal device may determine the number of areas based on the area radius indicated by the second parameter and formula (7).
  • the first parameter includes a level identifier of the first beam level, such as k.
  • the terminal device After determining the first parameter and the second parameter, the terminal device executes S2102:
  • the terminal device determines a reference position of the first area according to the first parameter, the second parameter and the first mapping relationship.
  • the terminal device determines the reference position of the first area based on the first beam level indicated by the first parameter, the number of areas indicated by the second parameter, and the first mapping relationship.
  • the first mapping relationship satisfies the following formula (8):
  • RL(k,i) represents the three-dimensional coordinates corresponding to the reference position of the first region
  • k represents the identifier of the first beam level
  • i represents the region identifier of the first region
  • i is a non-negative integer less than N spot
  • Re represents the parameters of the sphere where the first region is located
  • N spot represents the number of regions
  • [] represents the decimal operator.
  • the terminal device can obtain the reference position of each area in the N spot areas based on the above formula (8).
  • i represents the area identifier of the first area (e.g., i is the area number of the first area, used to identify the first area). It can be understood that each area in the N spot areas can be regarded as a first area. Accordingly, based on the above formula (8), the terminal device can traverse each first area in the N spot areas, thereby obtaining the reference position of each first area in the N spot areas.
  • the projection of RL(k,i) on the unit square is RL(k, xi , yi ).
  • the unit square specifically refers to a square in the Cartesian plane with corners located at the four points (0,0), (1,0), (0,1) and (1,1).
  • RL(k, xi ) represents the horizontal coordinate of the reference position of the first region on the projection of the unit square where the first region is located
  • RL(k, yi ) represents the vertical coordinate of the reference position of the first region on the projection of the unit square where the first region is located
  • i represents the region identifier of the first region
  • i is a non-negative integer less than Nspot
  • Nspot represents the number of regions
  • [] represents the decimal operator.
  • the above formula (8) can adopt the Cartesian coordinates RL( xi , yi ) of the Fibonacci grid.
  • RL(k, xi ) represents the abscissa of the reference position of the first region in Cartesian coordinates
  • RL(k, yi ) represents the ordinate of the reference position of the first region in Cartesian coordinates
  • i represents the region identifier of the first region
  • i is a non-negative integer less than Nspot
  • Nspot represents the number of regions
  • frac() represents the decimal part operator.
  • the first mapping relationship satisfies the following formula (11):
  • RL(k,i) represents the three-dimensional coordinates corresponding to the reference position of the first region
  • k represents the identifier of the first beam level
  • i represents the region identifier of the first region
  • i is a non-negative integer less than N spot
  • Re represents the parameters of the sphere where the first region is located
  • N spot represents the number of regions.
  • RL(k,i) represents the reference position of the first area
  • lon(k,i) represents the longitude corresponding to the reference position of the first area
  • lat(k,i) represents the latitude corresponding to the reference position of the first area
  • k represents the identifier of the first beam level
  • i represents the area identifier of the first area
  • i is a non-negative integer less than N spot
  • N spot represents the number of areas.
  • the unit of the longitude lon(k,i) corresponding to the reference position of the first area may be radians.
  • the unit of the latitude lat(k,i) corresponding to the reference position of the first area may also be radians.
  • the first area is introduced as follows:
  • Example 1 The first area is any one of the N spot areas.
  • the terminal device can obtain the reference position of any one of the N spots based on the above formula. In other words, the terminal device can obtain the topology of the N spots , the coverage of the N spots , or the adjacency relationship between different areas in the N spots .
  • Example 1 can be understood as follows: the terminal device can determine the reference position of each area in the N spot areas. Furthermore, the terminal device obtains its own position and determines the reference position of the area where the terminal device is located based on its own position and the reference position of the first area. Please refer to the introduction of Figure 15 and will not be repeated here.
  • the first area is an area indicated by an area identifier of the network device.
  • Example 2 the terminal device obtains the area identifier and determines the reference position of the first area according to the area identifier, the first parameter, the second parameter and the first mapping relationship. Please refer to the introduction of Figure 16a and will not be repeated here.
  • the terminal device since the first mapping relationship can indicate the conversion relationship between the reference position of the first area and the first beam level and the number of areas, and the first parameter indicates the first beam level and the second parameter indicates the number of areas, when the terminal device determines the first parameter and the second parameter, the terminal device can determine the reference position of the first area based on the first parameter, the second parameter and the first mapping relationship.
  • the first area can be the area covered by beams of different beam angles, or the first area can be the area of the terminal device at different elevation angles, that is, the radius of the first area can have multiple values.
  • the present application can adapt to areas with different radii. That is to say, even for areas with different radii, the terminal device can determine the reference position of the first area based on the first parameter, the second parameter and the first mapping relationship, thereby improving the flexibility of the terminal device in determining the area.
  • the terminal device and the network device can interact based on the first parameter and the second parameter.
  • the signaling overhead is reduced because fewer bits are required to indicate the first parameter and the second parameter.
  • the terminal device can communicate based on the reference location of the first area. For example, if the first area is an activation area of the network device, the terminal device can communicate with the network device if the terminal device is in the first area, thereby helping to improve communication efficiency.
  • this application defines at least one beam level.
  • the network device can send down parameters corresponding to a certain beam level. For example, the network device has learned the elevation angle of the terminal device and sends down the beam level corresponding to the elevation angle. Alternatively, the network device can also send down multiple beam levels. Accordingly, the terminal device may receive a certain beam level or multiple beam levels.
  • the implementation process of S2101 is introduced through two cases (the following cases 1-2):
  • S2101 includes S2101a:
  • S2101a The network device sends a first parameter to the terminal device.
  • the terminal device receives the first parameter from the network device.
  • the first parameter indicates a first beam level
  • the first beam level is associated with the elevation angle of the terminal device.
  • the elevation angle of the terminal device is within the angle range corresponding to the first beam level.
  • S2101 includes S2101b or S2101c, and the terminal device also executes S2111 and S2112, which are described in detail as follows:
  • S2111 The network device sends at least two fourth parameters to the terminal device.
  • the terminal device receives at least two fourth parameters from the network device.
  • each fourth parameter indicates a beam level.
  • one fourth parameter indicates beam level 1
  • the other fourth parameter indicates beam level 2.
  • different fourth parameters correspond to different beam levels.
  • the at least two fourth parameters correspond to two or more beam levels among the K beam levels.
  • each fourth parameter indicates a beam level.
  • different fourth parameters in the at least two fourth parameters correspond to different angle ranges.
  • the at least two fourth parameters correspond to two or more angle ranges among the K angle ranges.
  • different fourth parameters in the at least two fourth parameters correspond to different geographical ranges.
  • the at least two fourth parameters correspond to two or more geographical ranges among the K geographical ranges.
  • the network device sends a third parameter to the terminal device.
  • the terminal device receives the third parameter from the network device.
  • the third parameter indicates at least one angle range, and each angle range corresponds to a fourth parameter.
  • the third parameter indicates at least one geographical range, and each geographical range corresponds to a fourth parameter.
  • the third parameter indicates two geographic ranges, such as geographic range 1 and geographic range 2.
  • the longitude of geographic range 1 is x 0 -x 1
  • the latitude of geographic range 1 is y 0 -y 1
  • the longitude of geographic range 2 is x 1 -x 2
  • the latitude of geographic range 2 is y 1 -y 2 .
  • the third parameter may be carried in one of the following: RRC signaling, or DCI, or MAC-CE.
  • the third parameter and the fourth parameter can be carried in the same message or in different messages, and this application does not limit this.
  • the terminal device further executes S2121:
  • the terminal device obtains a first angle.
  • the first angle is the elevation angle of the terminal device, or the first angle is the beam angle corresponding to the terminal device.
  • the terminal device obtains its own position and determines the first angle according to its own position. Please refer to the relevant technology and will not repeat it here.
  • the terminal device further executes S2101b:
  • the terminal device determines the first parameter from the fourth parameter corresponding to the at least one angle range based on the at least one angle range indicated by the third parameter and the first angle.
  • the fourth parameter corresponding to the angle range is the first parameter.
  • the first angle is 10°, and within the range of 0 ⁇ 25, the first parameter is a parameter corresponding to beam level 1.
  • the terminal device can make a selection based on the first angle and perform calculations based on the selected first parameter, which helps reduce the computational complexity of the terminal device.
  • the terminal device further executes S2122:
  • S2122 The location of the terminal device itself.
  • the terminal device further executes S2101c:
  • the terminal device determines a first parameter from a fourth parameter corresponding to the at least one geographical range indicated by the third parameter and the location of the terminal device.
  • the fourth parameter corresponding to the geographical range is the first parameter.
  • the position of the terminal device is (x 0 , y 0 ), that is, the longitude is x 0 and the latitude is y 0 , then the position of the terminal device is within the range of (x 0 -x 1 ,y 0 -y 1 ), and the first parameter is the parameter corresponding to beam level 1.
  • the terminal device can make a selection based on its own position and perform calculations based on the selected first parameter, which helps reduce the computational complexity of the terminal device.
  • the above describes the process of determining the reference position of the first area by the terminal device.
  • the reference position of the first area is used to assist the terminal device in communication. It can be understood that the terminal device performs at least one of the following communication processes based on the reference position of the first area: initial access, service data transmission, mobility management, and interference coordination.
  • the following introduces the communication process performed by the terminal device based on the reference position of the first area.
  • the access scenario Taking the case where the N spot areas are broadcast areas and the first area is the area where the terminal device is located as an example, the following describes the access scenario:
  • the method further includes the following operations:
  • S2131a The network device sends information 2a to the terminal device.
  • the terminal device receives information 2a from the network device.
  • Information 2a indicates the access configuration corresponding to the first beam. It can be understood that information 2a belongs to access information and belongs to beam-level access configuration. Among them, the first beam is a beam covering the first area, and the level of the first beam is the first beam level.
  • the terminal device initiates random access according to the access configuration corresponding to the first beam.
  • the terminal device determines the first beam based on the area identifier of the first area, determines the access configuration of the first beam from information 2a, and initiates random access based on the access configuration corresponding to the first beam.
  • the terminal device when the network device indicates the beam-level access configuration (such as the access configuration of the first beam) to the terminal device, the terminal device initiates random access according to the beam access configuration corresponding to its area, thereby reducing signaling overhead.
  • the beam-level access configuration such as the access configuration of the first beam
  • the present application can provide beam-level access configuration, so that the terminal device can initiate random access based on the beam access configuration. Compared with the cell-based random access in the related technology, the present application can enable the terminal device to initiate random access more flexibly.
  • the area covered by the first beam is indicated by the first mapping relationship.
  • the area covered by the first beam includes the above-mentioned first area.
  • the terminal device can obtain the first beam corresponding to the first area according to the first mapping relationship.
  • the first mapping relationship may be pre-configured or configured by the network device, which is not limited in this application.
  • the data transmission process is described as follows:
  • the method further includes the following operations:
  • S2131b The network device sends information 2b to the terminal device.
  • the terminal device receives information 2b from the network device.
  • Information 2b indicates the communication resource configuration corresponding to the first beam. It can be understood that information 2b belongs to business resource information and belongs to the communication resource configuration at the beam level.
  • the terminal device performs service transmission according to the communication resource configuration corresponding to the first beam.
  • the terminal device determines the first beam based on the area identifier of the first area, determines the communication resource configuration of the first beam from information 2b, and performs service transmission based on the communication resource configuration corresponding to the first beam.
  • the terminal device transmits services according to the beam communication resource configuration corresponding to its own area, thereby reducing signaling overhead.
  • the present application can provide beam-level communication resource configuration, so that the terminal device can perform service transmission based on the beam-based communication resource configuration. Compared with the cell-based service transmission in the related technology, the present application can enable the terminal device to perform service transmission more flexibly.
  • the mobility management scenario is introduced by taking the case where the first area is the area where the terminal device is located as an example:
  • the method further includes the following operations:
  • the terminal device triggers neighboring cell measurement based on the reference position of the first beam and its own position.
  • the neighboring cell measurement is triggered. Conversely, if the distance between the reference position of the first beam and its own position is less than (or equal to) the threshold Y, the neighboring cell measurement is not triggered temporarily.
  • the neighboring cell measurement result is used for cell handover or cell reselection, and reference may be made to related technologies, which will not be described in detail here.
  • the terminal device determines whether to trigger neighboring cell measurement based on the reference position of the first area and its own position, and the signaling overhead is small.
  • the terminal device uses the reference position of the beam (the beam corresponding to the area where it is located) to determine whether to trigger neighboring cell measurement, instead of the traditional method of determining whether to trigger neighboring cell measurement based on reference position information (generally speaking, the reference position includes three-dimensional coordinates, and the signaling overhead can reach 72 bits). That is, the network device does not need to send down reference position information, and the signaling overhead is low.
  • the terminal device can determine whether to trigger neighbor cell measurement based on the reference position of the beam. Compared with the related art of triggering neighbor cell measurement based on the cell-level reference position, the present application enables the terminal device to trigger neighbor cell measurement more flexibly.
  • the reference position determination process of the first beam may include the following introduction:
  • the terminal device determines the first beam based on the first area and the first mapping relationship.
  • the reference position of the first beam may be the reference position of the first area.
  • the reference position of the first beam is determined by the reference position of each area in the first beam.
  • the first beam includes two areas, namely area X2 and area X3.
  • the reference position of the first beam refers to the center point between the reference position of area X2 and the reference position of area X3.
  • the reference position of the first beam can also be determined by other means, which is not limited in this application.
  • the method further includes the following operations:
  • the terminal device sends the neighboring cell measurement results based on the reference position of the first beam and its own position.
  • the neighboring cell measurement result is sent. Conversely, if the distance between the reference position of the first beam and the own position is less than (or equal to) the threshold Y, the neighboring cell measurement result is not sent temporarily.
  • the terminal device determines whether to send the neighboring cell measurement result based on the reference position of the first beam and its own position, and the signaling overhead is small.
  • the terminal device uses the reference position of the beam to determine whether to trigger the transmission of neighboring cell measurement results, replacing the traditional method of determining whether to trigger the transmission of neighboring cell measurement results based on reference position information (generally speaking, the reference position includes three-dimensional coordinates, and the signaling overhead can reach 72 bits). That is, the network device does not need to send down reference position information, and the signaling overhead is low.
  • the terminal device can determine whether to trigger the sending of neighboring area measurement results based on the reference position of the beam. Compared with the related art of triggering the sending of neighboring area measurement results based on the cell-level reference position, the present application enables the terminal device to trigger the sending of neighboring area measurement results more flexibly.
  • the method further includes the following operations:
  • the terminal device triggers cell switching based on the reference position of the first beam, its own position, and the signal quality of the neighboring cell.
  • the distance between the reference position of the first beam and the own position is greater than (or equal to) threshold Y, and the neighboring cell signal quality is greater than (or equal to) threshold Z, cell switching is triggered. Conversely, if the distance between the reference position of the first beam and the own position is less than (or equal to) threshold Y, and/or the neighboring cell signal quality is less than threshold Z, cell switching is not triggered temporarily.
  • the terminal device determines whether to trigger cell switching based on the reference position of the first beam and its own position, as well as the signal quality of the neighboring cell, and the signaling overhead is small.
  • the terminal device uses the reference position of the beam to determine whether to trigger cell switching, replacing the traditional method of determining whether to trigger cell switching based on reference position information (generally speaking, the reference position includes three-dimensional coordinates, and the signaling overhead can reach 72 bits). That is, the network device does not need to send down reference position information, and the signaling overhead is low.
  • the terminal device can determine whether to trigger cell switching based on the reference position of the beam. Compared with the related technology of triggering cell switching based on cell-level reference position, the present application enables the terminal device to trigger cell switching more flexibly.
  • thresholds can be pre-configured parameters or parameters configured by the network device, and this application does not limit this.
  • the interference coordination process is introduced:
  • the method further includes the following operations:
  • the terminal device sends an interference measurement result to the network device.
  • the network device receives the interference measurement result from the terminal device.
  • the terminal device performs interference measurement on the CSI-IM resource to obtain the interference measurement result, thereby emphasizing the interference of other cells to the first cell. Please refer to the relevant technology and will not be repeated here.
  • the interference measurement result may also indicate the beam corresponding to the first area, that is, the first beam, so that the network device knows the beam corresponding to the interference measurement result.
  • the interference measurement result includes a beam identifier of the first beam.
  • the interference measurement result is the interference intensity of other cells on the first cell in the first time period
  • the interference measurement result further indicates the first time period, so that the network device learns the time period corresponding to the interference measurement result.
  • the network device can perform interference coordination based on the received interference measurement results.
  • the communication method 2100 of the present application is introduced by taking an example in which one beam corresponds to one or more areas and the area radius at different levels (such as beam level) is the same.
  • beam-level communication is used as an example for introduction.
  • the above beam-level communication can also be replaced by cell-level communication. Take the first cell including the first area as an example:
  • the access configuration corresponding to the first beam can be replaced by the access configuration corresponding to the first cell.
  • the access configuration corresponding to the first beam can be replaced by the access configuration corresponding to the first cell.
  • the communication resource configuration corresponding to the first beam can be replaced by the communication resource configuration corresponding to the first cell.
  • the communication resource configuration corresponding to the first beam can be replaced by the communication resource configuration corresponding to the first cell.
  • the reference position of the first beam can be replaced by the reference position of the first cell.
  • the reference position of the first beam can be replaced by the reference position of the first cell.
  • network devices can also exchange information with each other.
  • the specific operations are as follows:
  • Step 1 A first network device determines first information.
  • the first information instructs the first network device to release communication resources of the first area or the first beam.
  • the areas covered by the first network device are numbered 1 to 100.
  • the areas covered by the first network device are numbered 4 to 100, 103, and 105.
  • the first network device for the first network device, three areas (i.e., areas numbered 1-3) are moved out, and two areas (i.e., areas numbered 103 and 105) are moved in.
  • the first area is the area numbered 1-3.
  • the first beam is the beam corresponding to the area numbered 1-3.
  • the first information when the first information indicates releasing the communication resources of the first area, the first information also indicates at least one of the following: an available time period corresponding to the first area, or a frequency resource corresponding to the first area, or a polarization mode corresponding to the first area.
  • the first information when the first information indicates the release of the communication resources of the first beam, the first information also indicates at least one of the following: the available time period corresponding to the first beam, or the frequency resources corresponding to the first beam, or the polarization mode corresponding to the first beam.
  • the first information is used to indicate activation of communication resources in the second area or the second beam.
  • the areas covered by the first network device are numbered 1 to 100.
  • the areas covered by the first network device are numbered 4 to 100, 103, and 105, as shown in FIG26 .
  • the second areas are the areas numbered 103 and 105.
  • the second beam is the beam corresponding to the areas numbered 103 and 105.
  • the first information when the first information indicates activation of communication resources in the second area, the first information further indicates at least one of the following: an available time period corresponding to the second area, or frequency resources corresponding to the second area, or a polarization mode corresponding to the second area.
  • the first information when the first information indicates activation of the communication resources of the second beam, the first information also indicates at least one of the following: an available time period corresponding to the second beam, or a frequency resource corresponding to the second beam, or a polarization mode corresponding to the second beam.
  • Step 2 The first network device sends the first information to the second network device.
  • the second network device receives the first information from the first network device.
  • the second network device when the first information instructs the first network device to release the communication resources of the first area or the first beam, the second network device activates the communication resources indicated by the first information.
  • the first network device For example, considering the characteristics of satellite progressive handover, for the first network device, three areas (i.e., areas numbered 1-3) are moved out. For the second network device, three areas (i.e., areas numbered 1-3) are moved in. Therefore, the first area is the aforementioned areas numbered 1-3.
  • the second network device activates the communication resources of the first area, or activates the communication resources of the first beam (i.e., the beam corresponding to the first area), thereby enabling information exchange between network devices through incremental updates, thereby implementing mobility management or interference coordination.
  • the second network device when the first information instructs the first network device to activate the communication resources of the second area or the second beam, the second network device releases the communication resources indicated by the first information.
  • the second area is the areas numbered 103 and 105.
  • the second network device releases the communication resources of the second area, or releases the communication resources of the second beam (i.e., the beam corresponding to the second area), thereby enabling information exchange between network devices through incremental updates, thereby implementing mobility management or interference coordination.
  • the first information instructing the first network device to release the communication resources of the first area can be replaced by the first information instructing the second network device to activate the communication resources of the first area. Accordingly, the second network device activates the communication resources of the first area according to the first information.
  • the first information instructing the first network device to release the communication resources of the first beam can be replaced by the first information instructing the second network device to activate the communication resources of the first beam. Accordingly, the second network device activates the communication resources of the first beam according to the first information.
  • the first information instructs the first network device to activate the communication resources of the second area, which can be replaced by the first information instructing the second network device to release the communication resources of the second area.
  • the second network device releases the communication resources of the second area according to the first information.
  • the first information instructing the first network device to activate the communication resources of the second beam may be replaced by the first information instructing the second network device to release the communication resources of the second beam. Accordingly, the second network device releases the communication resources of the second beam according to the first information.
  • the methods and/or steps implemented by the network device may also be implemented by components applicable to the network device (e.g., processor, chip, chip system, circuit, logic module, or software); and the methods and/or steps implemented by the terminal device may also be implemented by components applicable to the terminal device (e.g., processor, chip, chip system, circuit, logic module, or software).
  • the chip system may be composed of a chip, or may include a chip and other discrete components.
  • the communication device includes hardware structures and/or software modules corresponding to the execution of each function. It should be easily appreciated by those skilled in the art that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.
  • the embodiment of the present application can divide the functional modules of the communication device according to the above method embodiment.
  • each functional module can be divided according to each function, or two or more functions can be integrated into one processing module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be pointed out that the division of modules in the embodiment of the present application is schematic and is only a logical functional division. In actual implementation, there may be other division methods.
  • the communication device 2700 includes a processing module 2701 and a transceiver module 2702.
  • the communication device 2700 can be used to implement the functions of the above-mentioned network device or terminal device.
  • the communication device 2700 may further include a storage module (not shown in FIG. 27 ) for storing program instructions and data.
  • the transceiver module 2702 which may also be referred to as a transceiver unit, is configured to implement a transmitting and/or receiving function.
  • the transceiver module 2702 may be composed of a transceiver circuit, a transceiver, a transceiver, or a communication interface.
  • the transceiver module 2702 may include a receiving module and a sending module, which are respectively used to execute the receiving and sending steps performed by the network device or terminal device in the above method embodiments, and/or used to support other processes of the technology described herein; the processing module 2701 may be used to execute the processing steps (such as determination, etc.) performed by the network device or terminal device in the above method embodiments, and/or used to support other processes of the technology described herein.
  • the transceiver module receives/sends information can also be understood as the processing module receiving/sending information via the transceiver module.
  • the processing module receives/sends information via the transceiver module can also be understood as the processing module controlling the transceiver module to receive/send information.
  • the processing module sends information via the transceiver module can be understood as the processing module outputs information to the transceiver module, which then sends the information;
  • the processing module receives information via the transceiver module can be understood as the transceiver module receiving the information and inputting the information to the processing module.
  • the communication device 2700 may be presented in the form of various functional modules divided in an integrated manner.
  • the "module” here may refer to a specific application-specific integrated circuit (ASIC), a circuit, a processor and memory that executes one or more software or firmware programs, an integrated logic circuit, and/or other devices that can provide the above functions.
  • ASIC application-specific integrated circuit
  • the function/implementation process of the transceiver module 2702 can be implemented through the input and output interface (or communication interface) of the chip or chip system, and the function/implementation process of the processing module 2701 can be implemented through the processor (or processing circuit) of the chip or chip system.
  • the communication device 2700 provided in this embodiment can execute the above method, the technical effects that can be obtained can refer to the above method embodiments and will not be repeated here.
  • the network device or terminal device described in the embodiments of the present application can also be implemented using the following: one or more field programmable gate arrays (FPGAs), programmable logic devices (PLDs), controllers, state machines, gate logic, discrete hardware components, any other suitable circuits, or any combination of circuits that can perform the various functions described throughout this application.
  • FPGAs field programmable gate arrays
  • PLDs programmable logic devices
  • controllers state machines, gate logic, discrete hardware components, any other suitable circuits, or any combination of circuits that can perform the various functions described throughout this application.
  • the network device or terminal device described in the embodiment of the present application can be implemented by a general bus architecture.
  • Figure 28 is a structural diagram of a communication device 2800 provided in an embodiment of the present application, wherein the communication device 2800 includes a processor 2801 and a transceiver 2802.
  • the communication device 2800 can be a network device, or a chip or chip system therein; or, the communication device 2800 can be a terminal device, or a chip or module therein.
  • Figure 28 only shows the main components of the communication device 2800.
  • the communication device 2800 may further include a memory 2803, and an input and output device (not shown).
  • the processor 2801 is primarily used to process communication protocols and communication data, as well as control the entire communication device, execute software programs, and process software program data.
  • the memory 2803 is primarily used to store software programs and data.
  • the transceiver 2802 may include a radio frequency circuit and an antenna.
  • the radio frequency circuit is primarily used to convert baseband signals into radio frequency signals and process radio frequency signals.
  • the antenna is primarily used to transmit and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as a touch screen, display, and keyboard, are primarily used to receive user input and output data to the user.
  • the processor 2801 , the transceiver 2802 , and the memory 2803 may be connected via a communication bus.
  • the memory 2803 may exist independently of the processor 2801 or may be integrated with the processor 2801.
  • the memory 2803 may be located within the communication device 2800 or outside the communication device 2800, without limitation.
  • the processor 2801 can read the software program in the memory 2803, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor 2801 performs baseband processing on the data to be sent and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and then transmits the radio frequency signal to the outside in the form of electromagnetic waves through the antenna.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 2801.
  • the processor 2801 converts the baseband signal into data and processes the data.
  • the RF circuit and antenna may be provided independently of the processor performing baseband processing.
  • the RF circuit and antenna may be remotely arranged independent of the communication device.
  • the above-mentioned communication device 2700 may take the form of the communication device 2800 shown in FIG. 28 .
  • the functions/implementation process of the processing module 2701 in FIG27 can be implemented by the processor 2801 in the communication device 2800 shown in FIG28 calling the computer-executable instructions stored in the memory 2803.
  • the functions/implementation process of the transceiver module 2702 in FIG27 can be implemented by the transceiver 2802 in the communication device 2800 shown in FIG28.
  • the network device or terminal device in the present application may adopt the structure shown in Figure 29, or include the components shown in Figure 29.
  • Figure 29 is a schematic diagram of the structure of a communication device 2900 provided in the present application.
  • a communication device 2900 includes at least one processor 2901.
  • the communication device further includes a communication interface 2902.
  • the apparatus 2900 may implement the method provided in any of the aforementioned embodiments and any possible designs thereof.
  • the processor 2901 may implement the method provided in any of the aforementioned embodiments and any possible designs thereof through logic circuits or by executing code instructions.
  • the communication interface 2902 can be used to receive program instructions and transmit them to the processor. Alternatively, the communication interface 2902 can be used for the communication device 2900 to communicate and interact with other communication devices, such as exchanging control signaling and/or service data. Exemplarily, the communication interface 2902 can be used to receive signals from devices other than the communication device 2900 and transmit them to the processor 2901, or to send signals from the processor 2901 to other communication devices other than the communication device 2900.
  • the communication interface 2902 may be a code and/or data read and write interface circuit, or the communication interface 2902 may be a signal transmission interface circuit between a communication processor and a transceiver, or a pin of a chip.
  • the communication device 2900 may further include at least one memory 2903, which may be used to store required program instructions and/or data.
  • the memory 2903 may exist independently of the processor 2901 or may be integrated with the processor 2901.
  • the memory 2903 may be located within the communication device 2900 or outside the communication device 2900, without limitation.
  • the communication device 2900 may further include a power supply circuit 2904, which may be used to supply power to the processor 2901.
  • the power supply circuit 2904 may be located in the same chip as the processor 2901, or in another chip other than the chip where the processor 2901 is located.
  • the communication device 2900 may further include a bus 2905 , and various parts of the communication device 2900 may be interconnected via the bus 2905 .
  • the communication device 2700 shown in FIG. 27 may take the form of the communication device 2900 shown in FIG. 29 .
  • the functions/implementation process of the processing module 2701 in FIG27 can be implemented by the processor 2901 in the communication device 2900 shown in FIG29 calling the computer-executable instructions stored in the memory 2903.
  • the functions/implementation process of the transceiver module 2702 in FIG27 can be implemented by the communication interface 2902 in the communication device 2900 shown in FIG29.
  • the structure shown in FIG29 does not constitute a specific limitation on the network device or terminal device.
  • the network device or terminal device may include more or fewer components than shown in the figure, or combine or split certain components, or arrange the components differently.
  • the components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.
  • the processor in the present application may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.
  • CPU central processing unit
  • DSP digital signal processors
  • ASIC application-specific integrated circuits
  • FPGA field programmable gate arrays
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor.
  • the memory in the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory.
  • the volatile memory may be a random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static RAM
  • DRAM dynamic random access memory
  • SDRAM synchronous DRAM
  • DDR SDRAM double data rate synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous link dynamic random access memory
  • DR RAM direct rambus RAM
  • the power supply circuit described in the embodiment of the present application includes but is not limited to at least one of the following: a power supply line, a power supply subsystem, a power management chip, a power consumption management processor, or a power consumption management control circuit.
  • an embodiment of the present application further provides a communication device, which includes a processor for implementing the method in any of the above method embodiments.
  • the communication device further includes a memory.
  • the memory is used to store necessary computer programs and data.
  • the computer program may include instructions, and the processor may invoke the instructions in the computer program stored in the memory to instruct the communication device to execute any of the above-described method embodiments.
  • the memory may not be located in the communication device.
  • the communication device also includes an interface circuit, which is a code/data read/write interface circuit, and the interface circuit is used to receive computer execution instructions (computer execution instructions are stored in a memory, may be read directly from the memory, or may pass through other devices) and transmit them to the processor.
  • an interface circuit which is a code/data read/write interface circuit, and the interface circuit is used to receive computer execution instructions (computer execution instructions are stored in a memory, may be read directly from the memory, or may pass through other devices) and transmit them to the processor.
  • the communication device further includes a communication interface, where the communication interface is used to communicate with a module outside the communication device.
  • the communication device can be a chip or a chip system.
  • the communication device can be composed of chips or include chips and other discrete devices.
  • the embodiments of the present application do not specifically limit this.
  • the present application also provides a computer-readable storage medium having a computer program or instruction stored thereon, which implements the functions of any of the above method embodiments when executed by a computer.
  • the present application also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.
  • the systems, devices, and methods described in this application may also be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the units is merely a logical function division.
  • the coupling or direct coupling or communication connection shown or discussed may be through some interface, indirect coupling or communication connection of devices or units, and may be electrical, mechanical, or other forms.
  • the units described as separate components may or may not be physically separate, i.e., they may be located in one place or distributed across multiple network units. Components shown as units may or may not be physical units. Some or all of these units may be selected to achieve the objectives of this embodiment as needed.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above embodiments it can be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • a software program it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means.
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that can be integrated with one or more media.
  • the available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state drive (SSD)).
  • the computer may include the aforementioned device.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente demande relève du domaine technique des communications, et propose un procédé de communication et un appareil. Le procédé comprend les étapes suivantes : un dispositif terminal détermine un premier paramètre, le premier paramètre étant associé à des angles, les angles comprenant l'angle de largeur de faisceau ou l'angle d'élévation ; et, sur la base du premier paramètre et d'une première relation de mappage, le dispositif terminal détermine une position de référence d'une première zone, la première relation de mappage indiquant une relation de conversion entre le premier paramètre et la position de référence de la première zone.
PCT/CN2025/070270 2024-01-26 2025-01-02 Procédé et appareil de communication Pending WO2025156964A1 (fr)

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CN202410120659.4A CN120389775A (zh) 2024-01-26 2024-01-26 通信方法及装置

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Citations (4)

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US20200336184A1 (en) * 2017-11-29 2020-10-22 Sony Corporation Electronic device in wireless communication system, method, and computer readable storage medium
CN114244419A (zh) * 2021-11-16 2022-03-25 中国科学院计算技术研究所 一种用于低轨卫星的通信方法
CN116391430A (zh) * 2023-02-16 2023-07-04 北京小米移动软件有限公司 一种传输配置信息的方法、装置以及可读存储介质

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CN103974428A (zh) * 2013-01-31 2014-08-06 中国移动通信集团公司 微小区配置方法、装置及微基站
US20200336184A1 (en) * 2017-11-29 2020-10-22 Sony Corporation Electronic device in wireless communication system, method, and computer readable storage medium
CN114244419A (zh) * 2021-11-16 2022-03-25 中国科学院计算技术研究所 一种用于低轨卫星的通信方法
CN116391430A (zh) * 2023-02-16 2023-07-04 北京小米移动软件有限公司 一种传输配置信息的方法、装置以及可读存储介质

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