# US 12,604,276 B2 · User equipment (UE) capability signaling for maximum power support > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,604,276 B2 - Document ID: US12604276B2 - Status: Granted - Kind: B2 - Application number: 16/948,833 - Filed: 2020-10-01 - Published: 2021-04-08 - Granted: 2026-04-14 - Earliest claimed: 2019-10-04 - Assignees: QUALCOMM Incorporated - Applicants: Qualcomm Incorporated - Inventors: Yi Huang; Gokul Sridharan; Wanshi Chen; Wei Yang; Peter Gaal - Web page: https://patentgrep.com/patent/US12604276B2 ## CPC - H04B 7/0404: the mobile station comprising multiple antennas, e.g. to provide uplink diversity - H04W 52/146: {Uplink power control} - H04B 7/0456: Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting - H04B 7/0465: {taking power constraints at power amplifier or emission constraints, e.g. constant modulus, into account} - H04B 7/0639: {Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection} - H04B 7/0689: {using different transmission schemes, at least one of them being a diversity transmission scheme} - H04W 8/24: Transfer of terminal data - H04W 52/365: {Power headroom reporting} - H04W 52/367: {Power values between minimum and maximum limits, e.g. dynamic range} - H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network - H04B 7/0634: {Antenna weights or vector/matrix coefficients} - H04B: TRANSMISSION - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Wireless communications systems and methods related to wireless communications in a system are provided. A user equipment (UE) may transmit to a base station (BS), an indication of a maximum transmit power capability of the UE. The UE may receive from the BS, a transmit precoding configuration based on the UE's maximum transmit power capability. Additionally, the UE may transmit to the BS, a communication signal using the transmit precoding configuration. ## Claims ### Claim 1 A method of wireless communication performed at a user equipment (UE), the method comprising: transmitting, to network node, an indication including: a single value, including at least a bit value, indicating whether the UE supports full transmit power capability across all bands supported by the UE, and a mode indicator, different from the single value, indicating that the UE supports: a first mode only, the first mode being associated with the UE supporting full power transmission using full coherent precoders, a second mode only, the second mode associated with the UE supporting full power transmission using a virtual port, or both the first mode and the second mode; receiving, from the network node, a transmit precoding matrix indicator (TPMI) index based on the indication; and transmitting, to the network node, a communication signal with a power level based on the TPMI index via a delay applied to a baseband signal with transform precoding disabled. ### Claim 2 (depends on 1) The method of claim 1, wherein the TPMI index indicates a codebook subset for uplink full power transmission corresponding to at least one of the first mode or the second mode. ### Claim 3 (depends on 1) The method of claim 1, wherein the transmitting the communication signal comprises transmitting the communication signal using at least one pair of antenna elements that are non-coherent or using the virtual port. ### Claim 4 (depends on 1) The method of claim 1, wherein the mode indicator indicates that the UE supports the second mode only or both the first mode and the second mode, and wherein transmitting the communication signal comprises transmitting the communication signal at a full transmit power using the virtual port. ### Claim 5 (depends on 1) The method of claim 1, wherein each component carrier (CC) has an associated power amplifier, and wherein transmitting the indication comprises transmitting the indication on a per-CC basis. ### Claim 6 (depends on 4) The method of claim 4, the method further comprising: determining the virtual port is scheduled for a physical uplink shared channel (PUSCH). ### Claim 7 (depends on 1) The method of claim 1, wherein the transmitting the indication comprises transmitting the indication via a physical uplink control channel (PUCCH) communication. ### Claim 8 (depends on 1) The method of claim 1, wherein the mode indicator indicates that the UE supports the second mode only or both the first mode or the second mode, and the method further comprising: transmitting a refinement indication indicating whether the UE is capable of synthesizing one virtual port or two virtual ports that independently support full power transmission. ### Claim 9 A user equipment (UE), comprising: at least one memory; and at least one processor, coupled to the at least one memory, configured to: transmit, to a network node, an indication including: a single value, including at least a bit value, indicating whether the UE supports full transmit power capability across all bands supported by the UE, and a mode indicator, different from the single value, indicating that the UE supports: a first mode only, the first mode being associated with the UE supporting full power transmission using full coherent precoders, a second node only, the second mode associated with the UE supporting full power transmission using a virtual port, or both the first mode and the second mode; receive, from the network node, a transmit precoding matrix indicator (TPMI) index based on the indication; and transmit, to the network node, a communication signal with a power level based on the TPMI index via a delay applied to a baseband signal with transform precoding disabled. ### Claim 10 (depends on 9) The UE of claim 9, wherein the TPMI index indicates a codebook subset for uplink full power transmission corresponding to at least one of the first mode or the second mode. ### Claim 11 (depends on 9) The UE of claim 9, wherein, to transmit the communication signal, the at least one processor is configured to transmit the communication signal using at least one pair of antenna elements that are non-coherent or using the virtual port. ### Claim 12 (depends on 9) The UE of claim 9, wherein the mode indicator indicates that the UE supports the second mode only or both the first mode and the second mode, and wherein, to transmit the communication signal, the at least one processor is configured to transmit the communication signal at a full transmit power using the virtual port. ### Claim 13 (depends on 9) The UE of claim 9, wherein, to transmit the indication, the at least one processor is configured to transmit the indication via a physical uplink control channel (PUCCH) communication. ### Claim 14 (depends on 9) The UE of claim 9, wherein the mode indicator indicates that the UE supports the second mode only or both the first mode or the second mode, and wherein the at least one processor is configured to: transmit a refinement indication indicating whether the UE is capable of synthesizing one virtual port or two virtual ports that independently support full power transmission. ### Claim 15 A method of wireless communication performed at a network node, the method comprising: receiving, from a user equipment (UE), an indication including: a single value, including at least a bit value, indicating whether the UE supports full transmit power capability across all bands supported by the UE, and a mode indicator, different from the single value, indicating that the UE supports: a first mode only, the first mode being associated with the UE supporting full power transmission using full coherent precoders, a second mode only, the second mode associated with the UE supporting full power transmission using a virtual port, or both the first mode and the second mode; transmitting, to the UE, a transmit precoding matrix indicator (TPMI) index based on the indication; and receiving, from the UE, a communication signal with a power level based on the TPMI index via a delay applied to a baseband signal with transform precoding disabled. ### Claim 16 (depends on 15) The method of claim 15, wherein the TPMI index indicates a codebook subset for uplink full power transmission corresponding to at least one of the first mode or the second mode. ### Claim 17 (depends on 15) The method of claim 15, wherein the mode indicator indicates that the UE supports the second mode only or both the first mode and the second mode, and wherein receiving the communication signal comprises receiving the communication signal from the virtual port of the UE at a full transmit power. ### Claim 18 (depends on 17) The method of claim 17, the method further comprising: scheduling the virtual port for a physical uplink shared channel (PUSCH). ### Claim 19 (depends on 15) The method of claim 15, wherein the mode indicator indicates that the UE supports the second mode only or both the first mode or the second mode, and the method further comprising: receiving a refinement indication indicating whether the UE is capable of synthesizing one virtual port or two virtual ports that independently support full power transmission. ### Claim 20 A network node, comprising: at least one memory; and at least one processor, coupled to the at least one memory, configured to: receive, from a user equipment (UE), an indication including: a single value, including at least a bit value, indicating whether the UE supports full transmit power capability across all bands supported by the UE, and a mode indicator, different from the single value, indicating that the UE supports: a first mode only, the first mode being associated with the UE supporting full power transmission using full coherent precoders, a second mode only, the second mode associated with the UE supporting full power transmission using a virtual port, or both the first mode and the second mode; transmit, to the UE, a transmit precoding matrix indicator (TPMI) index based on the indication; and receive, from the UE, a communication signal with a power level based on the TPMI index via a delay applied to a baseband signal with transform precoding disabled. ### Claim 21 (depends on 20) The network node of claim 20, wherein the TPMI index indicates a codebook subset for uplink full power transmission corresponding to at least one of the first mode or the second mode. ### Claim 22 (depends on 20) The network node of claim 20, wherein the mode indicator indicates that the UE supports the second mode only or both the first mode and the second mode, and wherein, to receive the communication signal, the at least one processor is configured to receive the communication signal from the virtual port of the UE at a full transmit power. ### Claim 23 (depends on 20) The network node of claim 20, wherein, to receive the indication, the at least one processor is configured to receive the indication via a physical uplink control channel (PUCCH) communication. ### Claim 24 (depends on 20) The network node of claim 20, wherein the mode indicator indicates that the UE supports the second mode only or both the first mode or the second mode, and wherein the at least one processor is configured to: receive a refinement indication indicating whether the UE is capable of synthesizing one virtual port or two virtual ports that independently support full power transmission.