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CN-122028195-A - Communication method and device

CN122028195ACN 122028195 ACN122028195 ACN 122028195ACN-122028195-A

Abstract

A communication method and device includes that a terminal receives first information and second information, wherein the first information indicates M uplink resource sets, the second information is used for triggering N CSI to be reported through the same uplink resource, M is an integer greater than or equal to 2, and N is a positive integer. The terminal determines a first uplink resource set from M uplink resource sets based on a first assumption, and sends third information, wherein the first assumption indicates that the value of the rank of each CSI is a first value, the first value is larger than 1, one or more uplink resources in the first uplink resource set are used for bearing N CSI, and the third information indicates the first uplink resource set. By adopting the method, proper resources can be reserved for transmitting N pieces of CSI, so that most of contents of the N pieces of CSI can be transmitted.

Inventors

  • ZHU YUE
  • GAO JUNHUI
  • WANG XIAOHAN

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260512
Application Date
20241108

Claims (20)

  1. 1. A method of communication, the method comprising: Receiving first information and second information, wherein the first information indicates M uplink resource sets, the second information is used for triggering N CSI to be reported through the same uplink resource, M is an integer greater than or equal to 2, and N is a positive integer; Determining a first uplink resource set from the M uplink resource sets based on a first assumption, wherein the first assumption indicates that the value of the rank of each CSI is a first value, the first value is larger than 1, and one or more uplink resources in the first uplink resource set are used for bearing the N CSI; and sending third information, wherein the third information indicates the first uplink resource set.
  2. 2. The method of claim 1, wherein the number of bits that the M sets of uplink resources can carry is different, the number of bits that the first set of uplink resources can carry is greater than or equal to an estimated value of a total number of bits of the N CSI, and the estimated value of the total number of bits of the N CSI is determined according to the first value.
  3. 3. The method of claim 1 or 2, further comprising, prior to determining a first set of uplink resources from the M sets of uplink resources based on a first assumption: Determining that at least one time of CSI report exists in K times of CSI reports and uplink resources are insufficient, wherein the K times of CSI reports are the latest K times of CSI reports before receiving the second information, and K is a positive integer.
  4. 4. The method of claim 3, wherein the K CSI reports are in one-to-one correspondence with K sets of uplink resources, each of the K sets of uplink resources being determined according to a second hypothesis, the second hypothesis indicating that a rank of each CSI has a second value, the second value being 1.
  5. 5. The method of any one of claims 1-4, wherein the first value is 7 or 8.
  6. 6. The method of claim 5, wherein codebook feedback algorithm is that scheme a corresponds to the first value being 7 or 8.
  7. 7. The method of any one of claims 1-4, wherein the first value is 4.
  8. 8. The method of claim 7, wherein a codebook feedback algorithm is scheme B corresponding to the first value of 4.
  9. 9. The method of any of claims 1-4, wherein the first value is determined based on a first reference value determined based on a rank indication in CSI of a last S transmissions prior to receiving the second information, S being a positive integer.
  10. 10. The method as recited in claim 9, further comprising: and receiving indication information, wherein the indication information indicates the first reference value.
  11. 11. The method of any one of claims 1-10, further comprising: receiving N reference signals; determining the N pieces of CSI according to the N pieces of reference signals, wherein the N pieces of reference signals are in one-to-one correspondence with the N pieces of CSI; and transmitting the N pieces of CSI on one or more uplink resources in the first uplink resource set.
  12. 12. The method according to any of claims 1-11, wherein the M sets of uplink resources are M sets of physical uplink control channel, PUCCH, resources.
  13. 13. The method of any of claims 1-12, wherein some or all of the N CSI comprises a first partial CSI and a second partial CSI.
  14. 14. A communication device, characterized in that the device comprises a transceiver unit and a processing unit; The receiving and transmitting unit is configured to receive first information and second information, where the first information indicates M uplink resource sets, the second information is used to trigger N CSI to be reported through the same uplink resource, M is an integer greater than or equal to 2, and N is a positive integer; The processing unit is configured to determine a first uplink resource set from the M uplink resource sets based on a first assumption, where the first assumption indicates that a value of a rank of each CSI is a first value, the first value is greater than 1, and one or more uplink resources in the first uplink resource set are used to carry the N CSI; The transceiver unit is further configured to send third information, where the third information indicates the first uplink resource set.
  15. 15. The apparatus of claim 14, wherein the number of bits that the M sets of uplink resources can carry is different, the number of bits that the first set of uplink resources can carry is greater than or equal to an estimated value of a total number of bits of the N CSI, and the estimated value of the total number of bits of the N CSI is determined according to the first value.
  16. 16. The apparatus of claim 14 or 15, wherein the processing unit is configured to determine that there is at least one occurrence of insufficient uplink resources in K CSI reports before determining a first set of uplink resources from the M sets of uplink resources based on a first assumption, where the K CSI reports are last K CSI reports before receiving the second information, and K is a positive integer.
  17. 17. The apparatus of claim 16, wherein the K CSI reports are in one-to-one correspondence with K sets of uplink resources, each of the K sets of uplink resources being determined according to a second hypothesis, the second hypothesis indicating that a rank of each CSI has a second value, the second value being 1.
  18. 18. The apparatus of any one of claims 14-17, wherein the first value is 7 or 8.
  19. 19. The apparatus of claim 18, wherein a codebook feedback algorithm is that scheme a corresponds to the first value being 7 or 8.
  20. 20. The apparatus of any one of claims 14-17, wherein the first value is 4.

Description

Communication method and device Technical Field The present application relates to the field of communications, and in particular, to a communication method and apparatus. Background In the fifth generation (5th generation,5G) communication system, the application of a large-scale multiple-input multiple-output (MIMO) technology plays a crucial role in improving the spectral efficiency of the system. When the MIMO technique is adopted, before the base station transmits data to the terminal, the base station needs to receive Channel State Information (CSI) fed back by the terminal to the base station, and precode the data according to the CSI. Thus, accurate CSI is an important factor affecting system performance. As the number of antenna ports of a base station increases, CSI measurements of a larger number of ports may provide greater downlink spectral efficiency and system capacity. Currently, the Type 1 (Type I) codebook supports only 32-port CSI measurement at the highest, and it is now required to support CSI measurement with a higher port number (e.g., 128 ports), and thus the selectable beam may be narrowed, and more accurate beam indication is required. Further, how the terminal determines CSI overhead and selects an appropriate set of uplink resources based on the CSI overhead is a concern. Disclosure of Invention The embodiment of the application provides a communication method and a communication device, which are used for realizing that a terminal selects a proper uplink resource set to report CSI. In a first aspect, an embodiment of the present application provides a communication method, which may be applied to a terminal side, for example, a terminal or a communication module/processing module of the terminal, or a circuit or a chip (such as a modem (modem) chip, also referred to as a baseband (baseband) chip, or a system on chip (SoC) chip including a modem core, or a system-in-a package (SYSTEMIN PACKAGE) SIP chip) or a circuit or a chip (such as a graphics processor (graphics processing unit, GPU)) that is in charge of a processing function, where the method is applied to the terminal, for example, the terminal receives first information and second information, where the first information indicates M uplink resource sets, where the second information is used to trigger N CSI to be reported through the same uplink resource, where M is an integer greater than or equal to 2, and N is a positive integer, and the terminal determines a first uplink resource set from the M uplink resource sets based on a first hypothesis, and sends third information, where the value of the first indication rank of each CSI is a value greater than the first uplink resource set, where N is a value of the first CSI is greater than the first uplink resource set, and N is used to carry the first uplink information. By adopting the method, the terminal can select the uplink resource set based on the first assumption, wherein the first assumption indicates that the rank value of each CSI is a first value, and the first value is larger than 1, so that proper resources can be reserved for transmitting N CSI, most of contents of the N CSI can be transmitted, and further the transmission efficiency can be improved. In one possible design, the number of bits that the M uplink resource sets can carry is different, the number of bits that the first uplink resource set can carry is greater than or equal to an estimated value of a total number of bits of the N CSI, and the estimated value of the total number of bits of the N CSI is determined according to the first value. In one possible design, before determining the first uplink resource set from the M uplink resource sets based on the first assumption, the terminal determines that at least one CSI report exists in K CSI reports, where the K CSI reports are the last K CSI reports before receiving the second information, and K is a positive integer. By adopting the design, the problems of excessive reserved uplink resources and resource waste can be avoided. In one possible design, the K CSI reports are in one-to-one correspondence with K uplink resource sets, where the K uplink resource sets are all determined according to a second hypothesis, where the second hypothesis indicates that a value of a rank of each CSI is a second value, and the second value is 1. In one possible design, the first value is 7 or 8. In one possible design, the codebook feedback algorithm is that scheme a corresponds to the first value of 7 or 8. In one possible design, the first value is 4. In one possible design, the codebook feedback algorithm corresponds to the scheme B with the first value being 4 In one possible design, the first value is determined according to a first reference value, where the first reference value is determined according to a rank indication in CSI of the last S transmissions before receiving the second information, and S is a positive integer. By adopting the design, the p