CN-122001544-A - Communication method and device

Abstract

The embodiment of the application discloses a communication method and a communication device, wherein in the method, a network device sends first information, the first information is used for indicating that channel state information corresponding to one or more second frequency ranges is predicted based on reference signal measurement results corresponding to one or more first frequency ranges, and the second frequency ranges are different from the first frequency ranges. The terminal device transmits second information based on the first information, where the second information is used to indicate channel state information corresponding to N second frequency ranges in the one or more second frequency ranges, or is used to indicate M second frequency ranges in the one or more second frequency ranges, N, M is less than or equal to the total number of the one or more second frequency ranges, and N, M is a positive integer. The method can be used for predicting the channel state information corresponding to the second frequency range different from the first frequency range based on the reference signal measurement result corresponding to the first frequency range, and reducing the expenditure of reference signal transmission on the second frequency range.

Inventors

• Shao Shijia

Assignees

• 展讯半导体(南京)有限公司

Dates

Publication Date

20260508

Application Date

20241108

Claims (20)

1. 1.A method of communication, the method comprising: Receiving first information, wherein the first information is used for indicating that channel state information corresponding to one or more second frequency ranges is predicted based on reference signal measurement results corresponding to one or more first frequency ranges, and the second frequency ranges are different from the first frequency ranges; And transmitting second information based on the first information, wherein the second information is used for indicating channel state information corresponding to N second frequency ranges in the one or more second frequency ranges, or the second information is used for indicating M second frequency ranges in the one or more second frequency ranges, N, M is smaller than or equal to the total number of the one or more second frequency ranges, and N, M is a positive integer.
2. 2. The method of claim 1, wherein the step of determining the position of the substrate comprises, The first frequency range and the second frequency range are located in a first frequency band, and the first frequency band is a frequency range of a first cell.
3. 3. The method of claim 1, wherein the step of determining the position of the substrate comprises, The first frequency range is located in a first frequency band, and the second frequency range is located in a second frequency band; the first frequency band is the frequency range of a first cell, the second frequency band is the frequency range of a second cell, and the first cell and the second cell are different cells.
4. 4. The method of claim 1, wherein the step of determining the position of the substrate comprises, The first information includes an identification of the one or more second frequency ranges.
5. 5. The method according to any one of claims 1 to 4, further comprising: And receiving third information, wherein the third information is used for indicating reporting granularity of channel state information corresponding to the one or more second frequency ranges, and the reporting granularity is broadband or sub-band.
6. 6. The method of any of claims 1-4, wherein the second frequency range comprises one or more subbands, and wherein the method further comprises: fourth information is received, the fourth information being used to indicate a sub-band of the one or more sub-bands that is used to report channel state information.
7. 7. The method of any of claims 1 to 4, wherein the first information is configured to indicate that channel state information corresponding to one or more second frequency ranges is predicted based on reference signal measurements corresponding to the one or more first frequency ranges, and comprises: The first information is used to indicate channel state information of the one or more second frequency ranges at one or more time units based on reference signal measurements corresponding to the one or more first frequency ranges.
8. 8. The method of claim 7, wherein the method further comprises: Receiving fifth information, the fifth information further comprising one or more of a time interval between a reference time unit and an earliest one of the one or more time units, a number of the one or more time units, or a time interval between adjacent ones of the plurality of time units; the reference time unit is a time unit in which the terminal device transmits the second information, or the reference time unit is a time unit in which the terminal device receives the last reference signal.
9. 9. The method of any of claims 1-4, wherein the second information further indicates a first parameter, the first parameter being used for selection of the M second frequency ranges, wherein the second information indicates the M second frequency ranges.
10. 10. The method according to any one of claims 1 to 4, wherein the transmitting the second information comprises: transmitting the second information based on the priority of the sixth information; The sixth information is the second information, or the sixth information includes the second information and seventh information, where the seventh information is used to indicate channel state information corresponding to X first frequency ranges in the one or more first frequency ranges, X is a positive integer, and X is less than or equal to the total number of the one or more first frequency ranges.
11. 11. The method according to claim 10, wherein the method further comprises: And determining the priority of the sixth information based on the index of a first cell and/or the index of a second cell, wherein the first cell is the cell corresponding to the first frequency range, and the second cell is the cell corresponding to the second frequency range.
12. 12. A method of communication, the method comprising: transmitting first information; The first information is used for indicating that channel state information corresponding to one or more second frequency ranges is predicted based on reference signal measurement results corresponding to one or more first frequency ranges, and the second frequency ranges are different from the first frequency ranges; And receiving second information, where the second information is used to indicate channel state information corresponding to N second frequency ranges in the one or more second frequency ranges, or the second information is used to indicate M second frequency ranges in the one or more second frequency ranges, the N, M is less than or equal to the total number of the one or more second frequency ranges, and the N, M is a positive integer.
13. 13. The method of claim 12, wherein the step of determining the position of the probe is performed, The first frequency range and the second frequency range are located in a first frequency band, and the first frequency band is a frequency range of a first cell.
14. 14. The method of claim 12, wherein the step of determining the position of the probe is performed, The first frequency range is located in a first frequency band, and the second frequency range is located in a second frequency band; the first frequency band is the frequency range of a first cell, the second frequency band is the frequency range of a second cell, and the first cell and the second cell are different cells.
15. 15. The method of claim 12, wherein the step of determining the position of the probe is performed, The first information includes an identification of the one or more second frequency ranges.
16. 16. The method according to any one of claims 12 to 15, further comprising: and sending third information, wherein the third information is used for indicating reporting granularity of channel state information corresponding to the one or more second frequency ranges, and the reporting granularity is broadband or sub-band.
17. 17. The method of any of claims 12 to 15, wherein the second frequency range includes one or more subbands, and wherein the method further comprises: and transmitting fourth information, wherein the fourth information is used for indicating a sub-band used for reporting channel state information in the one or more sub-bands.
18. 18. The method according to any of claims 12 to 15, wherein the first information is used to indicate that channel state information corresponding to one or more second frequency ranges is predicted based on reference signal measurements corresponding to one or more first frequency ranges, comprising: The first information is used to indicate channel state information of the one or more second frequency ranges at one or more time units based on reference signal measurements corresponding to the one or more first frequency ranges.
19. 19. The method of claim 18, wherein the method further comprises: Transmitting fifth information, the fifth information further comprising one or more of a time interval between a reference time unit and an earliest one of the one or more time units, a number of the one or more time units, or a time interval between adjacent ones of the plurality of time units; the reference time unit is a time unit in which the terminal device transmits the second information, or the reference time unit is a time unit in which the terminal device receives the last reference signal.
20. 20. The method according to any of the claims 12 to 15, wherein the second information further indicates a first parameter for the selection of the M second frequency ranges, wherein the second information indicates the M second frequency ranges.

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 In the communication system, channel State Information (CSI) can assist the transmitting end in determining a data transmission manner, so as to improve data transmission quality. In one mode, a transmitting end transmits a channel state information-reference signal (CHANNEL STATE information-REFERENCE SIGNAL, CSI-RS), and a receiving end measures the received CSI-RS to obtain CSI and feeds the CSI back to the transmitting end. It can be seen that in this procedure, there is a corresponding CSI-RS overhead in order to obtain CSI. Disclosure of Invention The embodiment of the application provides a communication method and a communication device, which can predict channel state information corresponding to other frequency ranges different from the frequency range of a resource for transmitting a reference signal through a measurement result obtained by measuring the reference signal, thereby reducing CSI-RS overhead. In a first aspect, an embodiment of the present application provides a communication method. The method includes the terminal device receiving first information indicating that channel state information corresponding to one or more second frequency ranges is predicted based on reference signal measurement results corresponding to the one or more first frequency ranges, the second frequency ranges being different from the first frequency ranges. The terminal device transmits second information based on the first information, where the second information is used to indicate channel state information corresponding to N second frequency ranges in the one or more second frequency ranges, or the second information is used to indicate M second frequency ranges in the one or more second frequency ranges, N, M is less than or equal to the total number of the one or more second frequency ranges, and N, M is a positive integer. It can be seen that the method can predict channel state information corresponding to a second frequency range different from the first frequency range based on a measurement result of the reference signal transmitted on the resource of the first frequency range, and can reduce overhead of transmitting the reference signal on the resource of the second frequency range compared with a manner of measuring channel state information corresponding to the second frequency range based on the reference signal transmitted on the resource of the second frequency range. And the method is also beneficial to the subsequent selection of the frequency range to be switched for data transmission based on the channel state information corresponding to the predicted second frequency range, and is beneficial to the improvement of communication quality. In an alternative embodiment, the first frequency range and the second frequency range are located in a first frequency band, and the first frequency band is a frequency range of the first cell. It can be seen that the first frequency range and the second frequency range are located within the frequency range of the same cell. Based on the scheme, the channel state information corresponding to different frequency ranges of the same cell belonging to the first frequency range can be predicted based on the measurement result of the reference signal transmitted on the resource of the first frequency range, and the reference signal overhead is reduced. In an alternative implementation mode, the first frequency range is located in a first frequency range, the second frequency range is located in a second frequency range, the first frequency range is the frequency range of a first cell, the second frequency range is the frequency range of a second cell, and the first cell and the second cell are different cells. It can be seen that the first frequency range and the second frequency range are located in the frequency ranges of different cells. Based on the scheme, the channel state information corresponding to the frequency range of the first frequency range belonging to different cells can be predicted based on the measurement result of the reference signal transmitted on the resource of the first frequency range, and the reference signal overhead is reduced. In an alternative embodiment, the first information comprises an identification of one or more second frequency ranges. This embodiment facilitates the terminal device to determine the predicted one or more second frequency ranges. In an optional implementation manner, the method further comprises the step that the terminal device receives third information, wherein the third information is used for indicating reporting granularity of channel state information corresponding to one or more second frequency ranges, and the reporting granularity is broadband or sub-band. Based on the above-mentioned scheme, in the