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

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.

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.

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.