# US 11,452,052 B2 · Power control method, first communication node, and second communication node > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,452,052 B2 - Document ID: US11452052B2 - Status: Granted - Kind: B2 - Application number: 16/924,083 - Filed: 2020-07-08 - Published: 2021-01-07 - Granted: 2022-09-20 - Earliest claimed: 2018-01-12 - Assignees: Zte Corporation - Applicants: ZTE Corporation - Inventors: Ke Yao; Bo Gao; Chuangxin Jiang; Zhaohua Lu - Web page: https://patentgrep.com/patent/US11452052B2 ## CPC - H04W 52/242: {taking into account path loss} - H04W 52/42: in systems with time, space, frequency or polarisation diversity - H04W 28/06: Optimizing {the usage of the radio link}, e.g. header compression, information sizing {, discarding information (system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365)} - H04W 52/08: Closed loop power control - H04W 52/10: Open loop power control - H04W 52/146: {Uplink power control} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Disclosed are a power control method, a first communication node and a second communication node. The power control method includes: configuring, by a first communication node, an association between a power control parameter and reference signal information; and configuring or indicating, by the first communication node, a reference signal of a transmission for a second communication node, so that the second communication node determines a power control parameter of the transmission according to the reference signal of the transmission and the association. ## Claims ### Claim 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. ### Claim 2 (depends on 1) The method of claim 1, wherein the sounding reference signal is configured for determining a precoding matrix of the transmission. ### Claim 3 (depends on 1) 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. ### Claim 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. ### Claim 5 (depends on 4) 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. ### Claim 6 (depends on 4) The method of claim 4, wherein the sounding reference signal is configured for determining a precoding matrix of the transmission. ### Claim 7 (depends on 4) 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. ### Claim 8 (depends on 4) 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. ### Claim 9 (depends on 4) 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. ### Claim 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. ### Claim 11 (depends on 10) The first communication node of claim 10, wherein the sounding reference signal is configured for determining a precoding matrix of the transmission. ### Claim 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. ### Claim 13 (depends on 12) 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. ### Claim 14 (depends on 12) 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. ### Claim 15 (depends on 12) The second communication node of claim 12, wherein the sounding reference signal is configured for determining a precoding matrix of the transmission. ### Claim 16 (depends on 4) 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.