Power control method, first communication node, and second communication node

1. A power control method, comprising:

configuring, by a first communication node, an association between a first power control parameter for uplink transmission and sounding reference signal information;

configuring, by the first communication node, a sounding reference signal resource set including a plurality of sounding reference signal resources; and

sending, by the first communication node, an indication indicating a sounding reference signal of the uplink transmission to a second communication node,

wherein the sounding reference signal and the association are used by the second communication node to determine a second power control parameter for the uplink transmission,

wherein for a codebook based transmission, the association is between the first power control parameter and each of the plurality of sounding reference signal resources,

wherein for a non codebook based transmission, the association is between the first power control parameter and each of at least a part of possible combinations of the plurality of sounding reference signal resources, and

wherein the first power control parameter comprises at least one open-loop power control parameter set, at least one path loss measurement parameter set, and a closed-loop power control process index.

2. The method of claim 1 , wherein the sounding reference signal is configured for determining a precoding matrix of the transmission.

3. The method of claim 1 , wherein the sounding reference signal information comprises at least one of: at least one sounding reference signal resource index, or at least one sounding reference signal resource combination index.

4. A power control method, comprising:

receiving, by a second communication node from a first wireless communication node, an association between a first power control parameter for uplink transmission and sounding reference signal information;

receiving, by a second communication node from the first communication node, a sounding reference signal of the uplink transmission that is indicated; and

determining, by the second communication node, a second power control parameter for the uplink transmission according to the indicated sounding reference signal and the association,

wherein for a codebook based transmission, the association is between the first power control parameter and each of the plurality of sounding reference signal resources,

wherein for a non codebook based transmission, the association is between the first power control parameter and each of at least a part of possible combinations of the plurality of reference signal resources, and

wherein the first power control parameter comprises at least one open-loop power control parameter set, at least one path loss measurement parameter set, and a closed-loop power control process index.

5. The method of claim 4 , wherein for the non codebook based transmission, the plurality of sounding reference signal resources are configured by the first communication node in a sounding reference signal resource set.

6. The method of claim 4 , wherein the sounding reference signal is configured for determining a precoding matrix of the transmission.

7. The method of claim 4 , wherein the at least one open-loop power control parameter set comprises at least one of: a target receiving power, or a path loss factor, wherein the at least one path loss measurement parameter set comprises a sounding reference signal resource indication for path loss measurement.

8. The method of claim 4 , wherein the sounding reference signal information comprises at least one of: at least one sounding reference signal resource index, or at least one sounding reference signal resource combination index.

9. The method of claim 4 , wherein the association comprises at least one association relationship component, and each of the at least one association relationship component comprises at least one of: an open-loop power control parameter set index, a path loss measurement parameter set index, or a closed-loop power control process index.

10. A first communication node, comprising:

a processor; and

a memory configured to store computer programs executable on the processor,

wherein when the computer programs are executed, the processor is configured to:

configure an association between a first power control parameter for uplink transmission and sounding reference signal information;

configure a sounding reference signal resource set including a plurality of sounding reference signal resources; and

send an indication indicating a sounding reference signal of the uplink transmission to a second communication node,

wherein the sounding reference signal and the association are used by the second communication node to determine a second power control parameter for the uplink transmission;

wherein for a codebook based transmission, the association is between the first power control parameter and each of the plurality of sounding reference signal resources;

wherein for a non codebook based transmission, the association is between the first power control parameter and each of at least a part of possible combinations of the plurality of sounding reference signal resources; and

wherein the first power control parameter comprises at least one open-loop power control parameter set, at least one path loss measurement parameter set, and a closed-loop power control process index.

11. The first communication node of claim 10 , wherein the sounding reference signal is configured for determining a precoding matrix of the transmission.

12. A second communication node, comprising:

a processor; and

a memory configured to store computer programs executable on the processor,

wherein when the computer programs are executed, the processor is configured to:

receive, from a first communication node, a sounding reference signal of an uplink transmission that is indicated; and

determine a second power control parameter of the uplink transmission according to the indicated sounding reference signal and an association between a first power control parameter for the uplink transmission and sounding reference signal information;

wherein for a codebook based transmission, the association is between the first power control parameter and each of the plurality of sounding reference signal resources,

wherein for a non codebook based transmission, the association is between the first power control parameter and each of at least a part of possible combinations of the plurality of sounding reference signal resources, and

wherein the first power control parameter comprises at least one open-loop power control parameter set, at least one path loss measurement parameter set, and a closed-loop power control process index.

13. The second communication node of claim 12 , wherein for the non codebook based transmission, the plurality of sounding reference signal resources are configured by the first communication node in a sounding reference signal resource set.

14. The second communication node of claim 12 , wherein the sounding reference signal information comprises at least one of: at least one sounding reference signal resource index, or at least one sounding reference signal resource combination index.

15. The second communication node of claim 12 , wherein the sounding reference signal is configured for determining a precoding matrix of the transmission.

16. The method of claim 4 , wherein the first power control parameter comprises at least one closed-loop power control process parameter, wherein the at least one closed-loop power control process parameter comprises a number of closed-loop power control processes.