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CN-122001426-A - Communication method and device

CN122001426ACN 122001426 ACN122001426 ACN 122001426ACN-122001426-A

Abstract

A communication method and device relate to the technical field of communication. According to the method, the network equipment sends the first information indicating the mapping relation between the position information and the first matrix to the terminal, so that the terminal can determine the first matrix corresponding to the terminal according to the position information of the terminal and the mapping relation, and process the downlink channel information according to the first matrix corresponding to the terminal, and further report the processed downlink channel information to the network equipment.

Inventors

  • LI JIAHUI
  • BI XIAOYAN
  • MA MENGYAO

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260508
Application Date
20241108

Claims (20)

  1. 1. A method of communication, comprising: Receiving first information, wherein the first information is used for indicating a mapping relation between position information and a first matrix, the mapping relation is used for determining the first matrix corresponding to a terminal by combining the position information of the terminal, and the first matrix corresponding to the terminal is used for processing downlink channel information; And transmitting the processed downlink channel information.
  2. 2. The method according to claim 1, wherein the method further comprises: and sending second information, wherein the second information is used for indicating the position information of the terminal, or the second information is used for indicating a first matrix corresponding to the terminal.
  3. 3. The method of claim 1, wherein prior to the transmitting the processed downlink channel information, the method further comprises: Third information is received, wherein the third information is used for indicating the position information of the terminal.
  4. 4. A method according to any one of claims 1-3, characterized in that any one of the position information corresponds to one or more first matrices in the mapping relation.
  5. 5. The method of claim 4, wherein each location information corresponds to M first matrices, the M being an integer greater than 0.
  6. 6. The method according to any one of claims 1 to 5, wherein the first information includes position information, the position information included in the first information is original position information, or the position information included in the first information is compressed position information obtained by compressing the original position information.
  7. 7. The method of claim 6, wherein the raw location information is a location coordinate point or a location range.
  8. 8. The method of claim 7, wherein in the case where the original position information is a position coordinate point, the compressed position information includes one or more of the following information: Reference point coordinates, differential values between position coordinate points and the reference point coordinates, or differential values between different position coordinate points.
  9. 9. The method of claim 7, wherein, in the case where the original location information is a location range, the compressed location information includes one or more of the following information: And the reference point coordinates, the difference value between the vertex coordinates of the position range and the reference point coordinates, the difference value between different vertex coordinates of the position range, or the corresponding relation between the position range and the vertex.
  10. 10. The method according to any one of claims 1 to 9, wherein the first information includes information of a first matrix, the information of the first matrix included in the first information is an original first matrix, or the information of the first matrix included in the first information is compressed matrix information obtained by compressing the original first matrix.
  11. 11. The method of claim 10, wherein the original first matrix is a row orthogonal matrix, a column orthogonal matrix, or an orthogonal base matrix.
  12. 12. The method according to claim 10 or 11, wherein the compressed matrix information comprises position indication information of a first coefficient in the original first matrix and amplitude and phase values corresponding to the first coefficient, or wherein the compressed matrix information comprises position indication information of a first coefficient in the original first matrix and real and imaginary values corresponding to the first coefficient; The first coefficients are coefficients with corresponding amplitude values larger than a preset amplitude value in a matrix obtained by performing discrete Fourier transform on the original first matrix, or the first coefficients are first N coefficients selected after the coefficients in the matrix obtained by performing discrete Fourier transform on the original first matrix are ordered in descending order of the amplitude values, and N is an integer larger than 0.
  13. 13. The method according to any of claims 1-12, wherein the first information is carried in a broadcast message or a multicast message.
  14. 14. A method of communication, comprising: The method comprises the steps of sending first information, wherein the first information is used for indicating a mapping relation between position information and a first matrix, the mapping relation is used for determining the first matrix corresponding to a terminal by combining the position information of the terminal, and the first matrix corresponding to the terminal is used for processing downlink channel information; And receiving the processed downlink channel information.
  15. 15. The method of claim 14, wherein the method further comprises: Receiving second information, wherein the second information is used for indicating the position information of the terminal, or the second information is used for indicating a first matrix corresponding to the terminal; and processing the processed downlink channel information based on the first matrix corresponding to the terminal to obtain reconstructed downlink channel information.
  16. 16. The method of claim 14, wherein the method further comprises: And transmitting third information, wherein the third information is used for indicating the position information of the terminal.
  17. 17. The method according to any of claims 14-16, wherein any one of the position information corresponds to one or more first matrices in the mapping relation.
  18. 18. The method of claim 17, wherein each location information corresponds to M first matrices, the M being an integer greater than 0.
  19. 19. The method according to any one of claims 14 to 18, wherein the first information includes position information, the position information included in the first information is original position information, or the position information included in the first information is compressed position information obtained by compressing the original position information.
  20. 20. The method of claim 19, wherein the raw location information is a location coordinate point or a location range.

Description

Communication method and device Technical Field The present application relates to the field of communications technologies, and in particular, to a communications method and apparatus. Background Configuring a very large scale multiple-input multiple-output (MIMO) array is one of the evolving trends of future cellular systems. In very large-scale MIMO, the base station side will configure thousands of antenna units, while the terminal side will also configure more antenna units (e.g., 16, 32, etc.) to support more spatial streams. In addition, as carriers rise, the bandwidth that can be allocated by the wireless communication system increases further, and the number of subcarriers, resource Blocks (RBs), etc. increases sharply, so that the amount of data of channel information to be fed back (for example, channel State Information (CSI)) also increases sharply, and if the existing CSI processing scheme is continued, the CSI feedback requirement of the ultra-large MIMO cannot be adapted. Disclosure of Invention The application provides a communication method and a communication device, which can reduce the processing complexity of channel information and the feedback expenditure. 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 applied to a first communication device (which may also be expressed as that the method may be performed by the first communication device), where the first communication device may be a terminal or a communication module/processing module in the terminal, or a circuit or a chip in the terminal (such as a modem (modem) chip, also called a baseband (baseband) chip, or a system on chip (SoC) chip or a system in package (SYSTEM IN PACKAGE, SIP) chip containing a modem core, etc.). Taking the method as an example, the method is applied to a terminal, in the method, the terminal receives first information, the first information is used for indicating a mapping relation between position information and a first matrix, the mapping relation is used for determining the first matrix corresponding to the terminal by combining the position information of the terminal, and the first matrix corresponding to the terminal is used for processing downlink channel information. The terminal may transmit the processed downlink channel information. It can be understood that, in the present application, the downlink channel information may be alternatively expressed as channel information, channel state information, etc., which is not limited in the present application and will not be described in detail below. In the application, the network equipment can determine the first matrix corresponding to the terminal according to the position information of the terminal and the mapping relation between the position information and the first matrix by issuing the mapping relation between the position information and the first matrix, and process the downlink channel information according to the first matrix corresponding to the terminal, and report the processed downlink channel information to the network equipment. In one possible implementation, the method further comprises: and sending second information, wherein the second information is used for indicating the position information of the terminal, or the second information is used for indicating a first matrix corresponding to the terminal. In this implementation, when the second information indicates the location information of the terminal, the network device may determine the first matrix corresponding to the terminal according to the location information of the terminal and the mapping relationship, so the network device may process the processed downlink channel information from the terminal according to the first matrix corresponding to the terminal. Or the second information may also directly indicate the first matrix corresponding to the terminal, so that the network device may process the processed downlink channel information from the terminal according to the first matrix corresponding to the terminal, to obtain the reconstructed downlink channel information. In one possible implementation, before the sending the processed downlink channel information, the method further includes: Third information is received, wherein the third information is used for indicating the position information of the terminal. In this implementation, the network device may send the location information of the terminal to the terminal, so the terminal may determine the first matrix corresponding to the terminal according to the received location information of the terminal and the mapping relationship. In one possible implementation, in the mapping relationship, any one piece of position information corresponds to one or more first matrices. Under