# US 12,764,676 B2 · Precoder selection using power adjustment information > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,764,676 B2 - Document ID: US12764676B2 - Status: Granted - Kind: B2 - Application number: 18/465,298 - Filed: 2023-09-12 - Published: 2025-03-13 - Granted: 2026-10-13 - Earliest claimed: 2023-09-12 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Kiran Venugopal; Wooseok Nam - Web page: https://patentgrep.com/patent/US12764676B2 ## CPC - H04W 52/346: {distributing total power among users or channels} - H04B 7/0456: Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting - H04B 7/0626: {Channel coefficients, e.g. channel state information [CSI]} - H04L 1/0031: {Multiple signaling transmission (H04L1/1664, F15 take precedence)} - H04W 52/0235: {where the received signal is a power saving command} - H04W 52/22: taking into account previous information or commands - H04W 52/226: {using past references to control power, e.g. look-up-table} - H04W 52/367: {Power values between minimum and maximum limits, e.g. dynamic range} - H04W 24/02: Arrangements for optimising operational condition - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract An apparatus for wireless communication by a user equipment (UE) includes a receiver and a transmitter. The receiver is configured to receive a message indicating power adjustment information associated with one or more transmission and reception points (TRPs) and to receive a transmission of a reference signal via the one or more TRPs. The transmitter is configured to transmit, in accordance with the power adjustment information and the transmission of the reference signal, a measurement report indicating precoder information associated with the one or more TRPs. ## Claims ### Claim 1 A user equipment (UE) for wireless communication, the UE comprising: a receiver configured to receive a message indicating power adjustment information associated with a plurality of transmission and reception points (TRPs) and to receive a transmission of a reference signal via the plurality of TRPs, wherein the power adjustment information includes an indication that the power adjustment information is associated with at least a particular TRP among the plurality of TRPs and is further associated with a particular TRP amplitude backoff value that is to be applied at the particular TRP; and a transmitter configured to transmit, in accordance with the power adjustment information and the transmission of the reference signal, a measurement report indicating precoder information associated with the plurality of TRPs. ### Claim 2 (depends on 1) The UE of claim 1, wherein the power adjustment information is associated with a plurality of amplitude backoff values respectively associated with the plurality of TRPs, and wherein the plurality of amplitude backoff values include the particular TRP amplitude backoff value. ### Claim 3 (depends on 2) The UE of claim 2, wherein the power adjustment information includes the plurality of amplitude backoff values. ### Claim 4 (depends on 2) The UE of claim 2, wherein the power adjustment information includes one or more index values to a lookup table indicating the plurality of amplitude backoff values. ### Claim 5 (depends on 2) The UE of claim 2, wherein the receiver is further configured to receive a downlink transmission via the plurality of TRPs and in accordance with the plurality of amplitude backoff values. ### Claim 6 (depends on 5) The UE of claim 5, wherein the plurality of amplitude backoff values are in accordance with one or more of: a set of spatial beams associated with the downlink transmission; a component carrier associated with the downlink transmission; a bandwidth part (BWP) associated with the downlink transmission; or a transmission time interval (TTI) associated with the downlink transmission. ### Claim 7 (depends on 1) The UE of claim 1, wherein the indication includes one or more of a channel resource indicator (CRI) associated with the particular TRP, an index value associated with the particular TRP, or a bitmap associated with the plurality of TRPs. ### Claim 8 (depends on 1) The UE of claim 1, wherein the receiver is further configured to receive a non-joint transmission of the reference signal, wherein the transmitter is further configured to transmit, in accordance with the non-joint transmission of the reference signal, channel state information (CSI) feedback indicating initial precoder information, and wherein the power adjustment information is in accordance with the initial precoder information. ### Claim 9 (depends on 8) The UE of claim 8, wherein the CSI feedback is associated with a first periodicity, and wherein the measurement report is associated with a second periodicity that is different than the first periodicity. ### Claim 10 (depends on 8) The UE of claim 8, wherein the CSI feedback and the measurement report are associated with a same periodicity. ### Claim 11 (depends on 1) The UE of claim 1, wherein the indication includes a bitmap associated with the plurality of TRPs. ### Claim 12 (depends on 11) The UE of claim 11, wherein the bitmap includes a plurality of bits each corresponding to a respective TRP of the plurality of TRPs, and wherein the plurality of bits includes a particular bit indicating that the particular TRP is associated with the particular TRP amplitude backoff value. ### Claim 13 A method of wireless communication performed by a user equipment (UE), the method comprising: receiving a message indicating power adjustment information associated with a plurality of transmission and reception points (TRPs), wherein the power adjustment information includes an indication that the power adjustment information is associated with at least a particular TRP among the plurality of TRPs and is further associated with a particular TRP amplitude backoff value that is to be applied at the particular TRP; receiving a transmission of a reference signal via the plurality of TRPs; and transmitting, in accordance with the power adjustment information and the transmission of the reference signal, a measurement report indicating precoder information associated with the plurality of TRPs. ### Claim 14 (depends on 13) The method of claim 13, wherein the power adjustment information is associated with a plurality of amplitude backoff values respectively associated with the plurality of TRPs, and wherein the plurality of amplitude backoff values include the particular TRP amplitude backoff value. ### Claim 15 (depends on 14) The method of claim 14, wherein the power adjustment information includes the plurality of amplitude backoff values. ### Claim 16 (depends on 14) The method of claim 14, wherein the power adjustment information includes one or more index values, the method further comprising accessing a lookup table in accordance with the one or more index values to determine the plurality of amplitude backoff values. ### Claim 17 (depends on 14) The method of claim 14, further comprising receiving a downlink transmission via the plurality of TRPs and in accordance with the plurality of amplitude backoff values. ### Claim 18 (depends on 17) The method of claim 17, wherein the plurality of amplitude backoff values are dynamically selected in accordance with one or more of: a set of spatial beams associated with the downlink transmission; a component carrier associated with the downlink transmission; a bandwidth part (BWP) associated with the downlink transmission; or a transmission time interval (TTI) associated with the downlink transmission. ### Claim 19 (depends on 13) The method of claim 13, wherein the indication includes one or more of a channel resource indicator (CRI) associated with the particular TRP, an index value associated with the particular TRP, or a bitmap associated with the plurality of TRPs. ### Claim 20 (depends on 13) The method of claim 13, further comprising: receiving a non-joint transmission of the reference signal; and transmitting, in accordance with the non-joint transmission of the reference signal, channel state information (CSI) feedback indicating initial precoder information, wherein the power adjustment information is in accordance with the initial precoder information. ### Claim 21 (depends on 20) The method of claim 20, wherein the CSI feedback is associated with a first periodicity, and wherein the measurement report is associated with a second periodicity that is different than the first periodicity. ### Claim 22 (depends on 20) The method of claim 20, wherein the CSI feedback and the measurement report are associated with a same periodicity. ### Claim 23 A network node for wireless communication, the network node comprising: a transmitter configured to transmit a message indicating power adjustment information associated with a plurality of transmission and reception points (TRPs) and to transmit a reference signal via the plurality of TRPs, wherein the power adjustment information includes an indication that the power adjustment information is associated with at least a particular TRP among the plurality of TRPs and is further associated with a particular TRP amplitude backoff value that is to be applied at the particular TRP; and a receiver configured to receive, in accordance with the power adjustment information and the transmission of the reference signal, a measurement report indicating precoder information associated with the plurality of TRPs. ### Claim 24 (depends on 23) The network node of claim 23, wherein the power adjustment information is associated with a plurality of amplitude backoff values respectively associated with the plurality of TRPs, and wherein the plurality of amplitude backoff values include the particular TRP amplitude backoff value. ### Claim 25 (depends on 24) The network node of claim 24, wherein the power adjustment information includes the plurality of amplitude backoff values. ### Claim 26 (depends on 24) The network node of claim 24, wherein the power adjustment information includes one or more index values to a lookup table indicating the plurality of amplitude backoff values. ### Claim 27 A method of wireless communication performed by a network node, the method comprising: transmitting a message indicating power adjustment information associated with a plurality of transmission and reception points (TRPs), wherein the power adjustment information includes an indication that the power adjustment information is associated with at least a particular TRP among the plurality of TRPs and is further associated with a particular TRP amplitude backoff value that is to be applied at the particular TRP; transmitting a reference signal via the plurality of TRPs; and receiving, in accordance with the power adjustment information and the transmission of the reference signal, a measurement report indicating precoder information associated with the plurality of TRPs. ### Claim 28 (depends on 27) The method of claim 27, further comprising: performing a non-joint transmission of the reference signal; and receiving, in accordance with the non-joint transmission of the reference signal, channel state information (CSI) feedback indicating initial precoder information, wherein the power adjustment information is in accordance with the initial precoder information. ### Claim 29 (depends on 28) The method of claim 28, wherein the CSI feedback is associated with a first periodicity, and wherein the measurement report is associated with a second periodicity that is different than the first periodicity. ### Claim 30 (depends on 28) The method of claim 28, wherein the CSI feedback and the measurement report are associated with a same periodicity.