Search

CN-122002589-A - Communication method and related device

CN122002589ACN 122002589 ACN122002589 ACN 122002589ACN-122002589-A

Abstract

The embodiment of the application discloses a communication method and a related device, wherein the method comprises the following steps: the network device sends at least one first downlink control information, DCI, and at least one second DCI to the terminal device. The network device indicates the closed loop power control adjustment state and the transmission power control command of the SRS to the terminal device through the first DCI and the second DCI, so that the terminal device can still determine the transmission power of the SRS according to the first DCI and the second DCI under the condition of limited capacity.

Inventors

  • Gan Linxiao
  • GAO XIANG
  • ZOU TONG
  • ZHANG ZHENING

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260508
Application Date
20241108

Claims (20)

  1. 1. A communication method applied to a first device, the method comprising: Transmitting at least one first Downlink Control Information (DCI) and at least one second DCI, wherein the first DCI indicates a transmission power control command of a Sounding Reference Signal (SRS), the second DCI indicates an SRS closed loop power control adjustment state corresponding to the transmission power control command of the SRS, and the format of the first DCI is different from that of the second DCI; and receiving the SRS, wherein the transmission power of the SRS is determined according to the at least one first DCI and the at least one second DCI.
  2. 2. The method of claim 1, wherein the step of determining the position of the substrate comprises, The first DCI is DCI format 1_1; the second DCI is DCI format 2_3.
  3. 3. The method of claim 1, wherein the step of determining the position of the substrate comprises, The first DCI is DCI format 2_3; the second DCI is DCI format 1_1.
  4. 4. The method of any of claims 1-3, wherein the first DCI and the second DCI have an association.
  5. 5. The method of claim 4, wherein the first DCI and the second DCI have an association, comprising: the first DCI and the second DCI are carried in the same slot.
  6. 6. The method of any of claims 2, 4-5, wherein transmitting the at least one second DCI comprises: And sending the second DCI, wherein the second DCI comprises N SRS closed-loop power control indication domains, the SRS closed-loop power control indication domains indicate SRS closed-loop power control adjustment states corresponding to the SRS transmission power control commands, and N is an integer greater than or equal to 1.
  7. 7. The method of claim 6, wherein the second DCI comprises a first block and/or a second block, the first block corresponding to a supplemental uplink SUL carrier and the second block corresponding to a non-supplemental uplink non-SUL carrier; the first block and/or the second block includes closed loop power control indication fields of the N SRSs.
  8. 8. The method of any of claims 3, 4-5, wherein transmitting the at least one second DCI comprises: and transmitting N pieces of second DCI, wherein at least one piece of second DCI comprises at least one closed-loop power control indication domain of the SRS, the closed-loop power control indication domain of the SRS indicates an SRS closed-loop power control adjustment state corresponding to a transmission power control command of the SRS, and N is an integer greater than or equal to 1.
  9. 9. A communication method applied to a second device, the method comprising: receiving at least one first DCI and at least one second DCI, wherein the first DCI indicates a transmission power control command of a Sounding Reference Signal (SRS), the second DCI indicates an SRS closed loop power control adjustment state corresponding to the transmission power control command of the SRS, and the format of the first DCI is different from that of the second DCI; And transmitting the SRS, wherein the transmission power of the SRS is determined according to the at least one first DCI and the at least one second DCI.
  10. 10. The method of claim 9, wherein the step of determining the position of the substrate comprises, The first DCI is DCI format 1_1; the second DCI is DCI format 2_3.
  11. 11. The method of claim 9, wherein the step of determining the position of the substrate comprises, The first DCI is DCI format 2_3; the second DCI is DCI format 1_1.
  12. 12. The method of any one of claims 9-11, wherein the first DCI and the second DCI have an association.
  13. 13. The method of claim 12, wherein the first DCI and the second DCI have an association, comprising: the first DCI and the second DCI are carried in the same slot.
  14. 14. The method of any one of claims 10, 12-13, wherein receiving the at least one second DCI comprises: And receiving the second DCI, wherein the second DCI comprises closed-loop power control indication domains of N SRSs, the closed-loop power control indication domains of the SRSs indicate SRS closed-loop power control adjustment states corresponding to the SRS transmission power control commands, and N is an integer greater than or equal to 1.
  15. 15. The method of claim 14, wherein the closed loop power control indication fields of the N SRS correspond to different carriers.
  16. 16. The method of any one of claims 11, 12-13, wherein receiving the at least one second DCI comprises: The second DCI comprises at least one closed-loop power control indication domain of the SRS, wherein the closed-loop power control indication domain of the SRS indicates an SRS closed-loop power control adjustment state corresponding to the transmission power control command of the SRS.
  17. 17. The method according to any one of claims 9-16, wherein if the SRS closed loop power control adjustment state is a first state, determining a transmission power for transmitting the sounding reference signal according to the second DCI indicating the first state and the first DCI carried in the same time domain resource unit as the second DCI; Or if the second device sends the SRS closed loop power control adjustment state to be the second state, determining the transmission power of sending the sounding reference signal according to the second DCI indicating the second state and the first DCI carried in the same time domain resource unit as the second DCI.
  18. 18. The method according to any one of claims 9-17, further comprising: The receiving time for receiving the first DCI and the second DCI is determined as follows: The second device transmits K SRS,min symbols before transmission opportunity i of the SRS, where i is an integer greater than or equal to 1, K SRS,min is an integer greater than or equal to 1, Or the second device sends K SRS,min (i-i 0 ) -1 symbols before transmission opportunity i-i 0 of the SRS to K SRS,min symbols before transmission opportunity i of the SRS, i 0 is an integer greater than or equal to 1, and i 0 is less than i.
  19. 19. A communication device comprising a communication unit and a processing unit for performing the method of any of claims 1 to 8, or the method of any of claims 9 to 18.
  20. 20. A communication device comprising a processor and interface circuitry for receiving signals from other communication devices and transmitting to the processor or sending signals from the processor to other communication devices, the processor being configured to implement the method of any one of claims 1 to 8 or the method of any one of claims 9 to 18 by logic circuitry or execution of code instructions.

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 the process of communicating the terminal equipment with the network equipment, the terminal equipment determines a transmission power control command (transmission power control command, TPC command) and an SRS closed-loop power control adjustment state (closed loop power control adjustment state) corresponding to the TPC according to downlink control information (downlink control information, DCI). And then, the terminal equipment determines the transmission power of the SRS according to the SRS closed-loop power control adjustment state and the transmission power control command. Under the condition that the terminal equipment capability is limited, the network equipment cannot finish the indication of the SRS closed loop power control adjustment state and the transmission power control command in the same DCI. How to determine SRS transmission power in this case becomes a problem to be solved. Disclosure of Invention The embodiment of the application provides a communication method and a related device, wherein network equipment indicates an SRS closed loop power control adjustment state and a transmission power control command to terminal equipment through first DCI and second DCI, so that the terminal equipment can still determine the transmission power of the SRS according to the first DCI and the second DCI under the condition of limited capacity. In a first aspect, an embodiment of the present application provides a communication method, which is applied to a first device. The first apparatus may be a network device, or the first apparatus may be a device or apparatus with a chip, or a device or apparatus integrated with a circuit, or a chip, a chip system, a module, a control unit, a circuit, or a processor, or at least one of a Central Unit (CU) or a Distributed Unit (DU) applicable to the foregoing illustrated device or apparatus, and the present application is not limited in particular. The method comprises the steps of sending at least one first downlink control information DCI and at least one second DCI, wherein the first DCI indicates a transmission power control command of a sounding reference signal SRS, the second DCI indicates an SRS closed loop power control adjustment state corresponding to the transmission power control command of the SRS, the format of the first DCI is different from that of the second DCI, and receiving the SRS, and the transmission power of the SRS is determined according to the at least one first DCI and the at least one second DCI. In one example, the first DCI includes a transmission power control command field of the SRS, the transmission power control command field indicating a transmission power control command of the SRS. The second DCI includes an SRS closed loop power control indication (SRS closed loop power control indicator) field indicating an SRS closed loop power control adjustment state corresponding to a transmission power control command of the SRS indicated by the first DCI. The above method may also be understood that the SRS closed loop power control indication field of the second DCI indicates an SRS closed loop power control adjustment state corresponding to the first DCI, or the SRS closed loop power control indication field of the second DCI indicates an SRS closed loop power control adjustment state corresponding to the SRS transmission power control command field included in the first DCI. In yet another example, the SRS has a transmission power control command field of 2 bits in length and the SRS closed loop power control indication field has a length of 1 bit. In the above technical solution, the first device indicates, through the first DCI and the second DCI in different formats, the SRS transmission power control command and the SRS closed loop power control adjustment state corresponding to the SRS transmission power control command, respectively, so that the second device can still determine the SRS transmission power according to the first DCI and the second DCI under the condition that the capability is limited. With reference to the first aspect, in one possible implementation manner of the first aspect, the first DCI is a DCI format (DCI format) 1_1, and the second DCI is a DCI format 2_3. If the second device supports only the first capability, the first capability supported by the second device is that the second device supports the DCI format 1_1 to indicate the transmission power control command, or the first capability is that the second device can detect the transmission power control command domain of the DCI format 1_1, or the first capability supports two SRS closed loop power control adjustment states separated from a Physical Uplink Shared Channel (PUSCH) for the second device. Through the above technica