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CN-122002303-A - Communication method and related device

CN122002303ACN 122002303 ACN122002303 ACN 122002303ACN-122002303-A

Abstract

The application provides a communication method and a related device, wherein the method comprises the steps that a terminal device obtains K reference signals, K is a positive integer, the terminal device determines P pieces of channel state information based on the K reference signals, the K reference signals are in one-to-one correspondence with K reference signal resources, the P pieces of channel state information are in one-to-one correspondence with P pieces of reference signal resources in the K reference signal resources, P is a positive integer smaller than or equal to K, the terminal device sends N pieces of channel state information based on first information, the P pieces of channel state information comprise N pieces of channel state information, the first information is used for indicating the priority corresponding to each reference signal resource in the P pieces of reference signal resources, and N is a positive integer smaller than or equal to P. The method can reduce the channel state information discarded due to transmission collision.

Inventors

  • LI GAIYOU
  • YAN MAO
  • WANG XIAONA

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260508
Application Date
20241107

Claims (15)

  1. 1. A communication method applied to a first communication device, the method comprising: obtaining K reference signals, wherein K is a positive integer; Determining P pieces of channel state information based on the K reference signals, wherein the K reference signals are in one-to-one correspondence with K reference signal resources, the P pieces of channel state information are in one-to-one correspondence with P pieces of reference signal resources in the K reference signal resources, and the P is a positive integer smaller than or equal to K; And transmitting N pieces of channel state information based on first information, wherein the P pieces of channel state information comprise the N pieces of channel state information, the first information is used for indicating the priority corresponding to each of the P pieces of reference signal resources, and N is a positive integer smaller than or equal to P.
  2. 2. The method of claim 1, wherein the transmitting N pieces of channel state information based on the first information comprises: Determining P first values based on the first information, wherein the P first values are in one-to-one correspondence with the P channel state information; determining the N pieces of channel state information from the P pieces of channel state information based on the P pieces of first values; and transmitting the N pieces of channel state information.
  3. 3. The method of claim 2, wherein the N pieces of channel state information include first channel state information and second channel state information, and wherein if a first value corresponding to the first channel state information is greater than a first value corresponding to the second state information, a priority of the first channel state information is lower than a priority of the second channel state information; the top N pieces of channel state information with a high priority among the P pieces of channel state information are the N pieces of channel state information.
  4. 4. The method of claim 2 or 3, wherein the P first values are further related to at least one of second information, third information, fourth information, and fifth information, wherein, The second information is used for indicating time domain behaviors corresponding to the reports of the P pieces of channel state information; The third information is used for indicating the correlation condition of the report of each channel state information in the P channel state information and the signal quality information of the reference signal, wherein the correlation condition comprises that the report of the channel state information carries the signal quality information of the reference signal or the report of the channel state information does not carry the signal quality information of the reference signal; The fourth information is used for indicating information of a serving cell corresponding to each piece of channel state information in the P pieces of channel state information; the fifth information is used to indicate reporting of each of the P channel state information.
  5. 5. The method of claim 4 wherein the P-th channel state information comprises an i-th channel state information, a first value Pri iCSI (y, k, c, s, m) corresponding to the i-th channel state information is calculated based on a first formula, i is an integer not greater than P, and a calculation relationship of the first formula satisfies the following: Pri iCSI (y,k,c,s,m)＝M·(2·N cells ·M s ·y+N cells ·M s ·k+M s ·c+s)+m,m∈[0,M-1]; Or alternatively Pri icsI (y,k,c,m,s)＝M·(2·N cells ·M s ·y+N cells ·M s ·k+M s ·c)+M s ·m+s,m∈[0,M-1]; Or alternatively Pri iCSI (y,k,m,c,s)＝M·(2·N cells ·M s ·y+N cells ·M s ·k)+N cells ·M s ·m+M s ·c+s,m∈[0,M-1]; Or alternatively Pri iCSI (y,m,k,c,s)＝M·2·N cells ·M s ·y+2·N cells ·M s ·m+N cells ·M s ·k+M s ·c+s,m∈[0,M-1]; Or alternatively Pri iCSI (m,y,k,c,s)＝4·2·N cells ·M s ·m+2·N cells ·M s ·y+N cells ·M s ·k+M s ·c+s,m∈[0,M-1]; The method comprises the steps of obtaining an ith channel state information, wherein m is an index value of a reference signal resource of the ith channel state information, the index value is used for indicating a priority corresponding to the reference signal resource of the ith channel state information, s is an index value of a report of the ith channel state information, y is used for indicating a time domain behavior corresponding to the ith channel state information, k is used for indicating a correlation condition of the report of the ith channel state information and signal quality information of a reference signal, c is a cell index value of a serving cell corresponding to the ith channel state information, and c < N cells ,s＜M s ,M、N cells 、M s is a positive number.
  6. 6. The method of claim 4 wherein the P-th channel state information comprises an i-th channel state information, a first value Pri iCSI (y, k, c, s, m) corresponding to the i-th channel state information is calculated based on a first formula, i is an integer not greater than P, and a calculation relationship of the first formula satisfies the following: Pri iCSI (y,k,c,s m )＝2·N cells ·M1 s ·y+N cells ·M1 s ·k+M1 s ·c+s m ,s m ∈[0,M1 s -1],M1 s ＝M·M s ; Or alternatively Either Pri iCsI (y,k,c m ,s)＝2·M2 c ·M s ·y+M2 c ·M s ·k+M s ·c m +s,c m ∈[0,M2 c -1],M2 c ＝M·N cells ; or Pri iCSI (y,k m ,c,s)＝M3 k ·N cells ·M s ·y+N cells ·M s ·k m +M s ·c+s,k m ∈[0,M3 k -1],M3 k ＝M·2; Or alternatively Pri iCSI (y m ,k,c,s)＝2·N cells ·M s ·y m +N cells ·M s ·k+M s ·c+s,y m ∈[0,M4 y -1],M4 y ＝M·4; Wherein s m is related to the reference signal resource of the ith channel state information and the report of the ith channel state information, c m is related to the cell index value of the serving cell corresponding to the reference signal resource of the ith channel state information and the ith channel state information, k m is related to the related condition of the reference signal resource of the ith channel state information and the report of the ith channel state information and the signal quality information of the reference signal, y m is related to the time domain behavior corresponding to the reference signal resource of the ith channel state information and the ith channel state information, m is the index value of the reference signal resource of the ith channel state information, s is the index value of the report of the ith channel state information, y is the time domain behavior corresponding to the ith channel state information, k is the related condition of the signal quality information of the reference signal indicating the ith channel state information, and c is the index value of the serving cell corresponding to 34 < N.
  7. 7. The method according to claim 5 or 6, wherein the P reference signal resources belong to M reference signal resource groups, each of the M reference signal resource groups includes at least one reference signal resource, priorities corresponding to some or all of reference signal resources in a same reference signal resource group among the M reference signal resource groups are the same, and M is a positive integer less than or equal to P.
  8. 8. The method according to any one of claims 5-7, further comprising: The method comprises the steps of receiving first indication information, wherein the first indication information is used for indicating one or more reference signal resources, the P reference signal resources comprise the one or more reference signal resources, and a first value of channel state information corresponding to the one or more reference signal resources is smaller than a first value of channel state information except the one or more reference signal resources in the P channel state information.
  9. 9. The method of claim 8, wherein an index value corresponding to any one of the one or more reference signal resources is less than an index value corresponding to any one of the P reference signal resources other than the one or more reference signal resources.
  10. 10. The method according to claim 8 or 9, wherein y in the first formula is 0 when the first formula is used for calculating a first value of channel state information corresponding to the one or more reference signal resources.
  11. 11. A communication method applied to a second communication device, the method comprising: Transmitting K reference signals, wherein the K reference signals are used for determining P pieces of channel state information, the P pieces of channel state information comprise N pieces of channel state information, the K reference signals are in one-to-one correspondence with K pieces of reference signal resources, the P pieces of channel state information are in one-to-one correspondence with P pieces of reference signal resources in the K pieces of reference signal resources, K is a positive integer, and P is a positive integer smaller than or equal to K; And receiving the N pieces of channel state information, wherein the N pieces of channel state information are related to first information, the first information is used for indicating the priority corresponding to each of the P pieces of reference signal resources, and N is a positive integer smaller than or equal to P.
  12. 12. A communication device comprising means or units for performing the method of any one of claims 1 to 11.
  13. 13. A communication device comprising a processor and interface circuitry for acquiring signals from other communication devices and transmitting to the processor or outputting signals from the processor to other communication devices, the processor being operable to cause the communication device to implement the method of any one of claims 1 to 11 by logic circuitry or execution of code instructions.
  14. 14. A readable storage medium storing a computer program or instructions for execution by one or more processors to cause an apparatus comprising the one or more processors to perform the method of any one of claims 1 to 11.
  15. 15. A computer program product, characterized in that the computer program product, when run on an electronic device, causes the electronic device to perform the method of any of claims 1-11.

Description

Communication method and related device Technical Field The present application relates to the field of communications technologies, and in particular, to a communications method and a related device. Background In a hybrid beamforming (hybrid beamforming, HBF) architecture, network devices typically employ multiple analog beams to achieve coverage of different areas within a cell, different analog beams covering terminal devices in different areas. The terminal device may measure channel state information corresponding to the plurality of analog beams, generate a Channel State Information (CSI) report, and feed back the CSI report to the network device, where the CSI report may correspond to the channel state information corresponding to the plurality of analog beams. When the CSI reports have transmission conflicts (such as resource conflicts or time sequence conflicts), the terminal equipment selects one CSI report from the conflicting CSI reports to report, and directly discards other CSI reports, wherein part of CSI of the discarded CSI reports often does not relate to the transmission conflicts, so that unnecessary information is discarded. Disclosure of Invention The application provides a communication method and a related device, which are used for reducing channel state information discarded due to transmission collision. The application is described below in terms of various aspects, with the understanding that the embodiments and advantages of the various aspects below may be referenced to one another. In a first aspect, the present application provides a communication method, which may be performed by a first communication device, which may be a terminal device or a chip, a chip system, a module, or a control unit in a terminal device, and the present application is not limited in particular. 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. Illustratively, the chip in the present application includes, but is not limited to, a modem (modem) chip, also called a baseband (baseband) chip, or a system-on-a-chip (systemonchip, soC) chip or a system-in-package (SYSTEMINPACKAGE, SIP) chip including a modem core, which will not be described in detail. In the first aspect and its possible implementation manners, the method is described as an example performed by the terminal device. The method comprises the steps that a terminal device obtains K reference signals, K is a positive integer, the terminal device determines P pieces of channel state information based on the K reference signals, the K reference signals are in one-to-one correspondence with K reference signal resources, the P pieces of channel state information are in one-to-one correspondence with P pieces of reference signal resources in the K reference signal resources, P is a positive integer smaller than or equal to K, the terminal device sends N pieces of channel state information based on first information, the P pieces of channel state information comprise N pieces of channel state information, the first information is used for indicating priority corresponding to each piece of reference signal resources in the P pieces of reference signal resources, and N is a positive integer smaller than or equal to P. In the embodiment of the present application, the terminal device may determine N pieces of channel state information from P pieces of channel state information corresponding to P pieces of reference signal resources based on the priority corresponding to each of the P pieces of reference signal resources. Compared with the granularity (i.e. reporting and discarding level of channel state information report, one channel state information report comprises a plurality of channel state information) of which whether to report (or discard) the channel state information is judged, the granularity (i.e. reporting and discarding level of the channel state information is the reference signal resource level or the beam level or the channel state information level) of which whether to report (or discard) is judged, the method can avoid the situation that part of the channel state information in the channel state information report is discarded without transmission conflict, and reduce the channel state information discarded due to the transmission conflict. Wherein, the transmission collision may include a time domain collision, a resource collision, and the like. In the application, K reference signals are in one-to-one correspondence with K reference signal resources, and K reference signal resources are in one-to-one correspondence with K beams (such as analog beams). For example, the terminal device receives K reference signals from the network device