# US 11,310,746 B2 · TPC command indication for multiple closed loops > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,310,746 B2 - Document ID: US11310746B2 - Status: Granted - Kind: B2 - Application number: 16/646,621 - Filed: 2018-09-17 - Published: 2020-09-10 - Granted: 2022-04-19 - Earliest claimed: 2017-10-02 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Applicants: Telefonaktiebolaget LM Ericsson (publ) - Inventors: Ravikiran Nory; Niklas Wernersson - Web page: https://patentgrep.com/patent/US11310746B2 ## CPC - H04W 52/08: Closed loop power control - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04W 52/143: {Downlink power control} - H04W 52/146: {Uplink power control} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 52/325: {Power control of control or pilot channels} - H04W 52/54: Signalisation aspects of the TPC commands, e.g. frame structure - H04W 52/58: Format of the TPC bits - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract According to certain embodiments, a method is performed by a wireless device configured with multiple power control closed loops for a serving cell. The method comprises receiving a transmit power control (TPC) command in a downlink control message that comprises a plurality of TPC commands. The method comprises determining a particular power control closed loop of the plurality of power control closed loops to which the TPC command should be applied. The particular power control closed loop is determined using the downlink control message. The method further comprises updating the particular power control closed loop using the TPC command. ## Claims ### Claim 1 A method in a wireless device configured with multiple power control closed loops for a serving cell, the method comprising: receiving an indication of a starting position of a transmit power control (TPC) command in a downlink control message and an indication of a number of bits used for indicating closed loop power control; receiving a downlink control message comprising a plurality of TPC commands; obtaining the plurality of TPC commands from the downlink control message based on the received indication of the starting position of the TPC command and the indication of the number of bits used for indicating closed loop power control; determining a particular power control closed loop of the plurality of power control closed loops to which the TPC command should be applied, the particular power control closed loop determined using the downlink control message; and updating the particular power control closed loop using the TPC command. ### Claim 2 A wireless device configured with multiple power control closed loops for a serving cell, the wireless device comprising: a receiver; and processing circuitry coupled to the receiver, the processing circuitry configured to: receive, via the receiver, an indication of a starting position of a transmit power control (TPC) command in a downlink control message and an indication of a number of bits used for indicating closed loop power control; receive, via the receiver, a downlink control message comprising a plurality of TPC commands; obtain the plurality of TPC commands from the downlink control message based on the received indication of the starting position of the TPC command and the indication of the number of bits used for indicating closed loop power control; determine a particular power control closed loop of the plurality of power control closed loops to which the TPC command should be applied, the particular power control closed loop determined using the downlink control message; and update the particular power control closed loop using the TPC command. ### Claim 3 (depends on 2) The wireless device of claim 2, wherein the downlink control message is a Physical Downlink Control Channel (PDCCH) message containing downlink control information (DCI). ### Claim 4 (depends on 3) The wireless device of claim 3, wherein the processing circuitry is further configured to: receive, via the receiver, one or more closed loop indication bits in the DCI; and use the closed loop indication bits in determining the particular power control closed loop. ### Claim 5 (depends on 4) The wireless device of claim 4, wherein the one or more closed loop indication bits comprise an index value that is associated with the particular power control closed loop. ### Claim 6 (depends on 2) The wireless device of claim 2, wherein the processing circuitry is further configured to: determine a Radio Network Temporary Identifier (RNTI) associated with the downlink control message; and use the RNTI in determining the particular power control closed loop. ### Claim 7 (depends on 2) The wireless device of claim 2, wherein the processing circuitry is further configured to use a DCI cyclic redundancy check (CRC) of the downlink control message in determining the particular power control closed loop. ### Claim 8 (depends on 2) The wireless device of claim 2, wherein the multiple power control closed loops are used by the wireless device for adjusting transmission powers of Physical Uplink Shared Channel (PUSCH) transmissions on the serving cell. ### Claim 9 (depends on 2) The wireless device of claim 2, wherein the multiple power control closed loops are used by the wireless device for adjusting transmission powers of Physical Uplink Control Channel (PUCCH) transmissions on the serving cell. ### Claim 10 (depends on 2) The wireless device of claim 2, wherein the multiple power control closed loops are used by the wireless device for adjusting transmission powers of Sounding Reference Signal (SRS) transmissions on the serving cell. ### Claim 11 (depends on 2) The wireless device of claim 2, wherein the TPC command indicates a power control adjustment (δ) value that should be applied to the particular power control closed loop. ### Claim 12 (depends on 2) The wireless device of claim 2, wherein the downlink control message does not contain bits indicating an assignment of uplink resources. ### Claim 13 (depends on 2) The wireless device of claim 2, wherein the downlink control message is addressed to a group comprising the wireless device and one or more other wireless devices; and the plurality of TPC commands received in the downlink control message include one or more TPC commands associated with the one or more other wireless devices in the group. ### Claim 14 (depends on 2) The wireless device of claim 2, wherein the processing circuitry is further configured to, in response to receiving the downlink control message comprising the plurality of TPC commands, determine which of the plurality of TPC commands is to be applied by the wireless device. ### Claim 15 (depends on 14) The wireless device of claim 14, wherein the TPC command is determined using a bit field location in the DCI of the downlink control message. ### Claim 16 (depends on 15) The wireless device of claim 15, wherein the bit field location is indicated to the wireless device by higher layers. ### Claim 17 (depends on 2) The wireless device of claim 2, wherein each of the plurality of power control closed loops is associated with a respective beam of the serving cell. ### Claim 18 (depends on 2) The wireless device of claim 2, wherein to update the particular power control closed loop, the processing circuitry is configured to adjust a transmission power used in transmitting a physical uplink shared channel (PUSCH) transmission, the transmission power adjusted based on the power control adjustment (δ) value indicated by the particular TPC command.