# US 11,122,516 B2 · Systems and methods for uplink transmission power control > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,122,516 B2 - Document ID: US11122516B2 - Status: Granted - Kind: B2 - Application number: 16/407,952 - Filed: 2019-05-09 - Published: 2019-11-21 - Granted: 2021-09-14 - Earliest claimed: 2016-08-05 - Assignees: Apple Inc. - Applicants: Apple Inc. - Inventors: Yushu Zhang; RongZhen Yang; Yuan Zhu; Gang Xiong; Wenting Chang; Guotong Wang; Dae Won Lee; Yongjun Kwak - Web page: https://patentgrep.com/patent/US11122516B2 ## CPC - H04W 52/146: {Uplink power control} - H04B 7/0404: the mobile station comprising multiple antennas, e.g. to provide uplink diversity - H04B 7/0617: {for beam forming} - H04W 52/241: {taking into account channel quality metrics, e.g. SIR, SNR, CIR or Eb/lo} - H04W 52/242: {taking into account path loss} - H04W 52/243: {taking into account interferences} - H04W 52/325: {Power control of control or pilot channels} - H04B 7/0626: {Channel coefficients, e.g. channel state information [CSI]} - H04W 52/245: {taking into account received signal strength} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION ## Abstract Uplink Transmission Power Control (TPC) techniques configured to compensate for variations in path loss and/or interference on a plurality of uplink transmission beams. ## Claims ### Claim 1 An apparatus of a user equipment (UE) operable to configure uplink transmission power in a multi-beam system, the UE comprising: one or more processors configured to: decode, at the UE, higher level signaling received from a base station including one or more power control factors for corresponding ones of a plurality of uplink transmission beams, at least one of the one or more power control factors comprising a resource block power (P0) for each of the plurality of uplink transmission beams, the resource block power (P0) being associated with a resource block comprising a physical channel mapped to a smallest time-frequency unit within a resource grid, the resource block power (P0) comprising a function of one or more of an interference, a thermal noise and a target signal interference noise ratio for each of the plurality of uplink transmission beams; estimate, at the UE, a path loss for corresponding ones of the plurality of uplink transmission beams; and determine, at the UE, a transmission power of one or more of the plurality of uplink transmission beams as a function of the one or more decoded power control factors and the estimated path loss of the corresponding ones of the plurality of uplink transmission beams; and a memory interface configured to send to a memory one or more indicators of the determined transmission power of the corresponding ones of the plurality of uplink transmission beams. ### Claim 2 (depends on 1) The apparatus of claim 1, further comprising a transceiver configured to: receive, at the UE, higher level signaling received from the base station, including one or more power control factors for corresponding ones of a plurality of uplink transmission beams. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein the one or more processors are further configured to: encode an uplink signal for transmission on one or more of the plurality of uplink transmission beams based on the determined transmission power of the corresponding ones of the plurality of uplink transmission beams. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein the one or more power control factors includes a path loss compensation factor (a) for each of a plurality of uplink transmission beams. ### Claim 5 (depends on 1) The apparatus of claim 1, wherein the higher level signaling includes one or more of a System Information Block (SIB), a Master Information Block (MIB), a Radio Resource Control (RRC), or a Media Access Control (MAC) Control Element (CE). ### Claim 6 (depends on 1) The apparatus of claim 1, wherein the UE includes an antenna, a touch sensitive display screen, a speaker, a microphone, a graphics processor, an application processor, an internal memory, a non-volatile memory port, or combinations thereof. ### Claim 7 At least one non-transitory machine readable storage medium having instructions embodied thereon for a user equipment (UE) configured for uplink transmission power in a multi-beam system, the instructions when executed by one or more processors at the UE perform the following: decoding, at the UE, higher level signaling received from a base station including one or more power control factors for corresponding ones of a plurality of uplink transmission beams, at least one of the one or more power control factors comprising a resource block power (P0) for each of the plurality of uplink transmission beams, the resource block power (P0) being associated with a resource block comprising a physical channel mapped to a smallest time-frequency unit within a resource grid, the resource block power (P0) comprising a function of one or more of an interference, a thermal noise and a target signal interference noise ratio for each of the plurality of uplink transmission beams; estimating, at the UE, a path loss for corresponding ones of the plurality of uplink transmission beams; and determining, at the UE, a transmission power of one or more of the plurality of uplink transmission beams as a function of the one or more decoded power control factors and the estimated path loss of the corresponding ones of the plurality of uplink transmission beams. ### Claim 8 (depends on 7) The at least one machine readable storage medium in claim 7 further comprising instructions, that when executed by one or more processors at the UE, perform the following: receiving, at the UE, higher level signaling received from the base station, including one or more power control factors for corresponding ones of a plurality of uplink transmission beams. ### Claim 9 (depends on 7) The at least one machine readable storage medium in claim 7 further comprising instructions, that when executed by one or more processors at the UE, perform the following: encoding an uplink signal for transmission on one or more of the plurality of uplink transmission beams based on the determined transmission power of the corresponding ones of the plurality of uplink transmission beams. ### Claim 10 (depends on 7) The at least one machine readable storage medium in claim 7, wherein the one or more power control factors includes a path loss compensation factor (a) for each of a plurality of uplink transmission beams. ### Claim 11 (depends on 7) The at least one machine readable storage medium in claim 7, wherein the higher level signaling includes one or more of a System Information Block (SIB), a Master Information Block (MIB), a Radio Resource Control (RRC), or a Media Access Control (MAC) Control Element (CE).