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CN-122029753-A - Beam indication method and related device

CN122029753ACN 122029753 ACN122029753 ACN 122029753ACN-122029753-A

Abstract

The application provides a beam indication method and a related device. The method provided by the application comprises the steps that the terminal equipment receives first indication information from the network equipment, wherein the first indication information is used for indicating that a service beam of the terminal equipment is an airspace interpolation beam or a concurrent multi-beam, and the airspace interpolation beam or the concurrent multi-beam is determined according to a plurality of activated sending beams. Therefore, the network equipment indicates the specific service beam for the terminal equipment, and the efficiency and the accuracy of beam indication are improved.

Inventors

  • ZHANG XI
  • BI XIAOYAN
  • MA JIANGLEI
  • TONG WEN

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260512
Application Date
20231010

Claims (20)

  1. A method of beam pointing, the method comprising: the terminal equipment receives first indication information from the network equipment, wherein the first indication information is used for indicating that a service beam of the terminal equipment is an airspace interpolation beam or a concurrent multi-beam, and the airspace interpolation beam or the concurrent multi-beam is determined according to a plurality of activated sending beams.
  2. The method of claim 1, wherein the first indication information indicates that the serving beam of the terminal device is a spatially interpolated beam, and wherein the first indication information is further used to indicate at least one of a spatial interpolation coefficient corresponding to each of the plurality of active transmit beams, a half power beam width, HPBW, difference of the serving beam relative to one of the plurality of active transmit beams, or a first time offset, the first time offset being used to determine an effective time of the spatially interpolated beam.
  3. The method of claim 2, wherein the spatial interpolation coefficients for the active transmit beam comprise spatial interpolation coefficients for the departure angle of the reference signal for the active transmit beam.
  4. A method according to claim 3, wherein the spatial interpolation coefficients of the departure angle comprise spatial interpolation coefficients of azimuth angles and/or spatial interpolation coefficients of zenith angles.
  5. The method according to any one of claims 2 to 4, further comprising: And the terminal equipment determines the angle of the service beam according to the spatial interpolation coefficient corresponding to each activated transmission beam, and/or determines the width of the service beam according to the HPBW difference value.
  6. The method of claim 5, wherein the method further comprises: the terminal equipment measures the reference signals corresponding to the plurality of activated transmission beams to obtain multipath information corresponding to the plurality of activated transmission beams; The terminal equipment determines the angle of the service beam according to the spatial interpolation coefficient corresponding to each activated transmission beam, and/or determines the width of the service beam according to the HPBW difference value, comprising: And the terminal equipment determines the angle of the service beam according to the airspace interpolation coefficient corresponding to each activated transmitting beam and the multipath information, and/or determines the width of the service beam according to the HPBW difference value and the multipath information.
  7. The method of any one of claims 2 to 6, wherein the first indication information is a first value of a first code point, the first value of the first code point being used to indicate at least one of a spatial interpolation coefficient corresponding to the respective active transmit beam, the HPBW difference value, or the first time offset.
  8. The method of claim 7, wherein the method further comprises: the terminal equipment receives a first mapping relation from the network equipment, wherein the first mapping relation comprises mapping relations between different values of the first code points and at least one of a space domain interpolation coefficient, an HPBW difference value and a time offset.
  9. The method of claim 1, wherein the first indication information indicates that a serving beam of the terminal device is a concurrent multi-beam, and wherein the first indication information is further configured to indicate at least one of an AOD offset of the serving beam relative to each of the plurality of active transmit beams, a HPBW offset corresponding to the serving beam relative to each active transmit beam, or a second time offset, wherein the second time offset is configured to determine an effective time of the concurrent multi-beam.
  10. The method of claim 9, wherein the AOD offset of the serving beam relative to each of the plurality of active transmit beams comprises an azimuth offset of the serving beam relative to a reference signal corresponding to the each active transmit beam and/or an zenith offset of the serving beam relative to a reference signal corresponding to the each active transmit beam.
  11. The method according to claim 9 or 10, wherein the first indication information is further used to indicate the power of the concurrent multi-beam.
  12. The method according to any one of claims 9 to 11, further comprising: The terminal equipment determines the angle of the service beam according to the AOD offset, and/or determines the width of the service beam according to the HPBW offset.
  13. The method according to claim 12, wherein the method further comprises: The terminal equipment measures the plurality of activated transmission beams to obtain multipath information corresponding to the plurality of activated transmission beams; The terminal device determining the angle of the service beam according to the AOD offset, and/or determining the width of the service beam according to the HPBW offset, including: The terminal equipment determines the angle of the service beam according to the AOD offset and the multipath information, and/or determines the width of the service beam according to the HPBW offset and the multipath information.
  14. The method according to any one of claims 9 to 13, wherein the first indication information has a first value of a second code point, and the first value of the second code point is used to indicate at least one of an AOD offset of the service beam with respect to each of the plurality of active transmission beams, an HPBW offset corresponding to the service beam with respect to each of the plurality of active transmission beams, or the second time offset.
  15. The method of claim 14, wherein the method further comprises: The terminal equipment receives a second mapping relation from the network equipment, wherein the second mapping relation comprises mapping relations between different values of the second code point and at least one of an AOD offset, an HPBW offset and a time offset.
  16. The method according to any one of claims 1 to 15, wherein the first indication information is carried in downlink control information, DCI.
  17. The method according to any one of claims 1 to 16, wherein the plurality of activated transmission beams are transmission beams selected from a plurality of candidate transmission beams according to beam qualities of the plurality of candidate transmission beams, the plurality of candidate transmission beams belonging to a plurality of transmission beams the network device configures the terminal device to measure, the beam qualities of the plurality of candidate transmission beams being obtained by measuring the plurality of candidate transmission beams.
  18. The method according to any of claims 1 to 17, characterized in that before the terminal device receives the first indication information from the network device, the method further comprises: The terminal equipment receives first configuration information from the network equipment, wherein the first configuration information comprises separation angle AOD information corresponding to a plurality of reference signals respectively, and/or half-power beam width HPBW information corresponding to the plurality of reference signals respectively, each reference signal in the plurality of reference signals corresponds to one sending beam, the plurality of reference signals corresponds to a plurality of sending beams, and the plurality of activated sending beams belong to the plurality of sending beams; The terminal equipment measures the plurality of sending beams according to the first configuration information to obtain beam quality corresponding to the plurality of sending beams respectively; The terminal device sends candidate sending beam information and/or candidate sending beam quality information to the network device, wherein the candidate sending beam information is used for indicating a plurality of candidate sending beams, the plurality of candidate sending beams belong to the plurality of sending beams, and the candidate beam quality information is used for indicating beam qualities respectively corresponding to the plurality of candidate sending beams.
  19. The method of claim 18, wherein the AOD angle information for each of the plurality of reference signals comprises an azimuth angle for each of the plurality of reference signals and/or a zenith angle for each of the plurality of reference signals.
  20. The method of claim 18 or 19, wherein the HPBW information for each of the plurality of reference signals comprises an azimuth angle width for each of the plurality of reference signals and/or a zenith angle width for each of the plurality of reference signals.

Description

Beam indication method and related device Technical Field The present application relates to the field of communications technologies, and in particular, to a beam indication method and a related device. Background To meet the increasing communication demands, wireless communication systems are introducing higher frequency spectrum resources, such as millimeter wave, terahertz frequency bands. On higher frequency bands, the path loss experienced by the wireless signal is greater, affecting the coverage distance. In millimeter wave and terahertz frequency bands, a beam forming technology is generally adopted to converge signal energy to a specific angle range, so that the coverage distance of wireless signals is increased. To achieve beam alignment of the transmitter and receiver, the transmitter and receiver typically interact with information, such as the receiver informing the transmitter of the available beams, the transmitter informing the receiver of the transmit and receive beams, etc. In a fifth generation mobile communication system (5th generation,5G) communication network, one way to achieve beam alignment is for the terminal device to perform beam measurement based on reference signals (e.g., synchronization signals and physical broadcast channel blocks (synchronization signal/physical broadcast channel block, SSB) or channel state information reference signals (CHANNEL STATE information REFERENCE SIGNAL, CSI-RS)) sent by the base station, and report to the base station the reference signal resource numbers corresponding to one or more beams and the beam quality of the one or more beams. The base station then indicates the serving beam to the terminal device. For example, the base station indicates the reference signal resource number to the terminal device. Thereby realizing data transmission between the base station and the terminal equipment. In the 5G communication protocol, beam indication is implemented by the base station indicating to the terminal device a quasi co-location (QCL) relationship between a plurality of reference signals. It follows that, for beam indication, the base station indirectly indicates the QCL relationship between the multiple reference signals. Resulting in lower efficiency of beam pointing and lower accuracy of beam pointing. Disclosure of Invention The application provides a beam indication method and a related device, which are used for a terminal device to receive first indication information from network equipment. The first indication information is used for indicating that the service beam of the terminal equipment is a spatial interpolation beam or a concurrent multi-beam. Thereby realizing that the network device indicates a specific service beam for the terminal device. Improving the efficiency and accuracy of beam pointing. The first aspect of the present application provides a beam pointing method, which is executed by a terminal device, where the terminal device may be a device or apparatus with a chip, or a device or apparatus integrated with a circuit, or a chip, a chip system, a module, or a control unit in the foregoing device or apparatus, and the present application is not limited specifically. In the present application, when referring to a terminal device, the term "terminal device" may refer to the terminal device itself, or may refer to a chip, a functional module, or an integrated circuit in the terminal device for completing the method provided by the present application, and the present application is not limited specifically. In the first aspect and its possible implementation manners, the method is described as an example performed by the terminal device. The method provided by the application comprises the following steps: The terminal equipment receives first indication information from the network equipment, wherein the first indication information is used for indicating that a service beam of the terminal equipment is an air-domain interpolation beam or a concurrent multi-beam, and the air-domain interpolation beam or the concurrent multi-beam is determined according to a plurality of activated transmission beams. It should be noted that the service beam may also be referred to as an active transmission configuration number state (transmission configuration indicator, TCI) state, an active beam, or an active quasi co-located (QCL) relationship. The spatial interpolation beam may also be referred to as an interpolation beam, a predicted beam, a new beam, or a serving beam. The concurrent multi-beam may also be referred to as a multi-beam, a predicted beam, a new beam, or a serving beam. The active transmit beam may also be referred to as an active transmit beam, an active downlink transmit beam, or an active originating beam. According to the technical scheme, the terminal equipment receives first indication information from the network equipment, wherein the first indication information is used for indicating that the service beam of