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CN-122026970-A - Method for transmitting or receiving information and communication device

CN122026970ACN 122026970 ACN122026970 ACN 122026970ACN-122026970-A

Abstract

The application provides a method for sending or receiving information and a communication device, wherein CSI reported by a terminal side to a network side contains RI which is associated with one candidate value in a group of candidate values of a rank configured by the network side. And the terminal side discards codeword elements and the like in an interlayer public or interlayer specific mode when the candidate value associated with the RI is greater than 1, processes and quantizes the discarding of the CSI codeword, and reports the CSI to the network side. The application can avoid the situation that the CSI on a certain dimension is lost under the rule-based CSI discarding scheme, and can reduce the performance loss of the system in the reporting of the CSI based on the AI.

Inventors

  • LIANG XIN
  • YANG PEI
  • ZHANG YONGPING
  • SHEN XIUYONG

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260512
Application Date
20241108

Claims (20)

  1. 1. A method of transmitting information, comprising: acquiring Channel State Information (CSI) reporting configuration information, wherein the CSI reporting configuration information comprises rank limiting information, and the rank limiting information indicates one or more candidate values of a rank; And transmitting CSI, wherein, The CSI comprises a rank indicator, RI, associated with a first candidate of the one or more candidates, and The CSI further comprises a first code stream, the first code stream being based on a discard process and quantization of CSI codewords, the discard process being related to the first candidate value.
  2. 2. The method of claim 1, wherein the CSI codeword is obtained based on processing a matrix of channel eigenvectors by an artificial intelligence AI encoder, the channel eigenvectors being determined based on CSI obtained by the measurement.
  3. 3. The method according to claim 1 or 2, characterized in that the method comprises: And sending first information, wherein the first information indicates the first candidate value.
  4. 4. A method according to any of claims 1-3, characterized in that the first code stream is based on the first candidate value, the number of quantization bits of codeword elements of the CSI codeword, and the discarding process and quantization of the CSI codeword.
  5. 5. The method of claim 4, wherein the CSI reporting configuration information further comprises second information indicating the number of quantization bits.
  6. 6. The method of claim 4 or 5, wherein the CSI reporting configuration information further comprises a number of reported codeword elements.
  7. 7. The method according to any one of claims 4-6, further comprising: The first candidate value is 1, and the first code stream is generated based on the quantization bit number, wherein the first code stream is from M 0 codeword elements in M codeword elements contained in the CSI codeword, and M 0 is the number of reported codeword elements.
  8. 8. The method according to any one of claims 4-6, further comprising: The first candidate value is r, r is greater than 1, the first code stream is generated based on the quantization bit number, the first code stream comprises r subcode streams, the r subcode streams are in one-to-one correspondence with r layers, the subcode stream of the ith layer in the r layers is from M 0 code word elements of the ith layer, each layer in the r layers comprises M code word elements, and M 0 is the number of the reported code word elements.
  9. 9. The method according to any of claims 4-6, wherein the first code stream is based on the first candidate value, a number of quantization bits of codeword elements of the CSI codeword, and discard processing and quantization of the CSI codeword, comprising: The first code stream is obtained based on the first candidate value, the quantization bit number, the kind of quantization bit number, and the discarding process and quantization of the CSI codeword.
  10. 10. The method of claim 9, wherein the CSI reporting configuration information further comprises third information indicating a kind of the quantization bit number.
  11. 11. The method according to claim 9 or 10, characterized in that the method further comprises: The first candidate value is 1, the types of the quantization bit numbers are n, and M j codeword elements with the quantization bit numbers of x j corresponding to the CSI codeword are selected A number of codeword elements, the CSI codeword comprising M codeword elements, Σ j M j =m, j=1, 2,..n, n being greater than or equal to 2; Generating the first code stream based on the n kinds of quantization bit numbers and quantization bit numbers corresponding to the n kinds of quantization bit numbers, wherein the first code stream comprises n sub-code streams, and the j sub-code stream in the n sub-code streams corresponds to the And codeword elements.
  12. 12. The method according to claim 9 or 10, characterized in that the method further comprises: The first candidate value is r, r is greater than 1, the type of the quantization bit number is one, the first code stream is generated, the first code stream comprises r subcode streams, the r subcode streams are in one-to-one correspondence with r layers, the code stream of the ith layer in the r layers comes from M 0 code word elements of the ith layer, and each layer in the r layers comprises M code word elements.
  13. 13. The method according to claim 9 or 10, characterized in that the method further comprises: The first candidate value is r, r is greater than 1, the type of the quantization bit number is one, the first code stream is generated, the first code stream comprises r subcode streams, the r subcode streams are in one-to-one correspondence with r layers, the subcode stream of the ith layer in the r layers is from M i code word elements of the ith layer, and the ith layer in the r layers comprises M code word elements.
  14. 14. The method according to claim 9 or 10, characterized in that the method further comprises: The first candidate value is r, r is greater than 1, the types of the quantization bit numbers are n, the first code stream is generated, the first code stream comprises r sub-code streams, the r sub-code streams are in one-to-one correspondence with r layers, and the sub-code stream of the ith layer in the r layers is from the ith layer, and the corresponding quantization bit number is x j And a codeword element, wherein the i-th layer contains M j codeword elements, j=1, 2.
  15. 15. The method according to claim 9 or 10, characterized in that the method further comprises: The first candidate value is r, r is greater than 1, the types of the quantization bit numbers are n, the first code stream is generated, the first code stream comprises r sub-code streams, the r sub-code streams are in one-to-one correspondence with r layers, and the sub-code stream of the ith layer in the r layers comes from the ith layer and corresponds to the quantization bit number x j The ith layer contains the code word elements Each codeword element, j=1, 2,..n, n is greater than or equal to 2.
  16. 16. The method according to any of claims 1-15, wherein the CSI codeword is determined from the reporting configuration information.
  17. 17. A method of receiving information, comprising: transmitting Channel State Information (CSI) reporting configuration information, wherein the CSI reporting configuration information comprises rank limiting information, and the rank limiting information indicates one or more candidate values of a rank; Receiving the CSI, wherein, The CSI comprises a rank indicator, RI, associated with a first candidate of the one or more candidates, and The CSI further comprises a first code stream, the first code stream being based on a discard process and quantization of CSI codewords, the discard process being related to the first candidate value.
  18. 18. The method of claim 17, wherein the CSI codeword is obtained based on processing a matrix of channel eigenvectors by an artificial intelligence AI encoder, the channel eigenvectors being determined based on CSI obtained by the measurement.
  19. 19. The method according to claim 17 or 18, characterized in that the method comprises: First information is received, the first information indicating the first candidate value.
  20. 20. The method according to any of claims 17-19, wherein the first code stream is based on the first candidate value, a number of quantization bits of a codeword element of the CSI codeword, and discard processing and quantization of the CSI codeword.

Description

Method for transmitting or receiving information and communication device Technical Field The present application relates to the field of wireless communication, and more particularly, to a method of transmitting or receiving information and a communication apparatus. Background The channel state information reference signal (CHANNEL STATE information REFERENCE SIGNAL, CSI-RS) is a reference signal dedicated for channel measurement. The base station transmits the CSI-RS in the downlink, so that a User Equipment (UE) can perform channel estimation by using the received CSI-RS, and calculates a precoding matrix indicator (precoding matrix indicator, PMI), a Rank Indicator (RI), a channel quality indicator (channel quality indicator, CQI), and the like to jointly form the CSI based on a result of the channel estimation. The CSI is split into two parts (Part), part 1 and Part 2. Part 1 contains content which must be reported in CSI such as RI and CQI, and Part 2 contains content which can be partially discarded in CSI such as PMI. And when the uplink load (or uplink resource) of a certain time of CSI report is insufficient to bear the whole content of the CSI, the CSI is discarded. Part 1 has a fixed reporting overhead and contains the number of information bits of Part 2. The content in Part 1 is totally reported. And after the Part 1 is reported, part 2 is partially discarded according to the uplink load and then reported. Artificial intelligence (ARTIFICIAL INTELLIGENCE, AI) has evolved into an important approach in the physical layer of wireless communications, particularly CSI reporting, by being able to provide a satisfactory fitting solution to complex problems. Reporting of AI-based CSI (hereinafter AI CSI) is still faced with CSI dropping. When AICSI reporting schemes are used, the rule-based CSI discard scheme in the existing standard is not fully applicable because the codeword elements generated by AI do not have physical meaning. For the rule-based CSI discard scheme, the discard rule is difficult to flexibly configure, which may cause CSI in a certain dimension to be completely discarded, resulting in a large performance loss for the communication system. Therefore, how to avoid the performance loss of the communication system caused by the AICSI reporting scheme is a problem to be solved. Disclosure of Invention The application provides a method and a communication device for transmitting or receiving information, which can reduce the performance loss of a communication system caused by an AI CSI reporting scheme. In a first aspect, a method for transmitting information is provided, which is performed by a communication device or a module (e.g. a processor, a chip, a circuit, etc. and may also be a logic module, hardware and/or software, etc. capable of implementing all or part of the functions of the communication device), where the communication device may correspond to a terminal device in an embodiment of the method. The method can include obtaining channel state information, CSI, reporting configuration information, wherein the CSI reporting configuration information comprises rank limiting information, the rank limiting information indicates one or more candidate values of a rank, sending the CSI, wherein the CSI comprises a rank indication, RI, the RI is associated with a first candidate value in the one or more candidate values, the CSI further comprises a first code stream, the first code stream is obtained based on discarding processing and quantization of CSI code words, and the discarding processing is related to the first candidate value. In the technical scheme of the application, a network side is configured with a group of candidate values of rank, and RI in CSI reported by a terminal side is associated with one candidate value (called a first candidate value) in the group of candidate values. The first candidate value indicates the number of layers (i.e., layers) employed by the terminal side to report CSI. In addition, the discarding process of the codeword element of the CSI codeword by the terminal side is related to the first candidate value. According to the first candidate value being 1 or greater than 1, the terminal side can adopt a corresponding scheme to discard codeword elements. Further, when the first candidate value is greater than 1, the terminal side may have a further scheme for discarding codeword elements for multiple layers. Based on the technical scheme of the application, the situation of total loss of the CSI on a certain dimension possibly caused by the priority-based CSI discarding scheme can be avoided, and the performance loss of the system can be reduced. Optionally, when the network side configures multiple candidate values of the rank, the RI in the CSI reported by the terminal side associates with a first candidate value of the multiple candidate values. The first candidate may be a candidate of the plurality of candidates for which a corresponding