# US 11,115,936 B2 · Apparatus and methods for communication resource allocation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,115,936 B2 - Document ID: US11115936B2 - Status: Granted - Kind: B2 - Application number: 16/423,425 - Filed: 2019-05-28 - Published: 2019-09-12 - Granted: 2021-09-07 - Earliest claimed: 2007-03-19 - Assignees: Apple Inc. - Applicants: Apple Inc. - Inventors: Oghenekome Oteri; James McCoy - Web page: https://patentgrep.com/patent/US11115936B2 ## CPC - H04W 52/18: TPC being performed according to specific parameters - H04W 52/241: {taking into account channel quality metrics, e.g. SIR, SNR, CIR or Eb/lo} - H04W 52/262: {taking into account adaptive modulation and coding [AMC] scheme} - H04W 52/365: {Power headroom reporting} - H04W 52/54: Signalisation aspects of the TPC commands, e.g. frame structure - H04W 52/146: {Uplink power control} - H04W 52/247: {where the output power of a terminal is based on a path parameter sent by another terminal} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Methods and corresponding systems for determining a transmit power in a mobile device include receiving, in the mobile device, a cell-wide power control parameter related to a target receive power at a serving base station. Thereafter, a transmit power is calculated in response to the cell-wide power control parameter and an implicit mobile-specific power control parameter. The mobile device then transmits using the transmit power. The cell-wide power control parameter can be a cell target signal to interference-plus-noise ratio, or a fractional power control exponent. The implicit mobile-specific power control parameter can be a modulation and coding level previously used by the mobile device, or a downlink SINR level measured by the mobile device. ## Claims ### Claim 1 A method for performing a wireless communication service request in a wireless device, the method comprising: determining whether a resource utilization limitation exceeds a reporting threshold; transmitting a service request message to a base station, wherein the service request message includes a power headroom of the wireless device in response to the wireless device determining that the resource utilization limitation exceeds the reporting threshold; and receiving an uplink resource allocation grant from the base station, wherein the resource allocation is based at least in part on the service request message. ### Claim 2 (depends on 1) The method of claim 1, wherein the power headroom is a difference between a power level the wireless device is instructed to use and a maximum power level attainable by the wireless device. ### Claim 3 (depends on 1) The method of claim 1, wherein the service request message includes a size of data to be transmitted. ### Claim 4 (depends on 1) The method of claim 1, wherein the resource utilization limitation is based on a power limitation. ### Claim 5 (depends on 1) The method of claim 1, wherein the resource utilization limitation is based on a maximum number of resource blocks that can be used by the wireless device in an uplink transmission. ### Claim 6 (depends on 1) The method of claim 1, wherein the resource utilization limitation is one or more of: an amount of remaining power that can be used for uplink transmission, a limit to the number of resource blocks that can be used during an uplink transmission based on the power headroom, and a resource limit that depends upon the wireless device transmit power. ### Claim 7 (depends on 1) The method of claim 1, wherein the wireless device determines the resource utilization limitation after receiving a random access channel response, wherein the resource utilization limitation is based at least in part on instructions in the random access channel response; where the wireless device receives the random access channel response in response to transmitting a random access channel. ### Claim 8 (depends on 7) The method of claim 7, wherein the random access channel response includes instructions to adjust transmission timing and power control. ### Claim 9 A wireless communication device comprising: a processor configured to determine whether a resource utilization limitation exceeds a reporting threshold; a transmitter configured to transmit a service request message to a base station, wherein the service request message includes a power headroom of the wireless device in response to the processor determining that the resource utilization limitation exceeds the reporting threshold; and a receiver configured to receive an uplink resource allocation grant from the base station, wherein the resource allocation is based at least in part on the service request message. ### Claim 10 (depends on 9) The wireless communication device of claim 9, wherein the power headroom is a difference between a power level the wireless device is instructed to use and a maximum power level attainable by the wireless device. ### Claim 11 (depends on 9) The wireless communication device of claim 9, wherein the service request message includes a size of data to be transmitted. ### Claim 12 (depends on 9) The wireless communication device of claim 9, wherein the resource utilization limitation is based on a power limitation. ### Claim 13 (depends on 9) The wireless communication device of claim 9, wherein the resource utilization limitation is based on a maximum number of resource blocks that can be used by the wireless device in an uplink transmission. ### Claim 14 (depends on 9) The wireless communication device of claim 9, wherein the resource utilization limitation is one or more of: an amount of remaining power that can be used for uplink transmission, a limit to the number of resource blocks that can be used during an uplink transmission based on the power headroom, and a resource limit that depends upon the wireless device transmit power. ### Claim 15 (depends on 9) The wireless communication device of claim 9, wherein the receiver is further configured to receive a random access channel response in response to the transmitter transmitting a random access channel; and wherein the processor is further configured to determine the resource utilization limitation after the receiver receives the random access channel response, wherein the resource utilization limitation is based at least in part on instructions in the random access channel response. ### Claim 16 (depends on 15) The wireless communication device of claim 15, wherein the random access channel response includes instructions to adjust transmission timing and power control. ### Claim 17 An apparatus comprising: a memory storing software instructions; and a processor configured to implement the software instructions to cause a wireless device to: determine whether a resource utilization limitation exceeds a reporting threshold; transmit a service request message to a base station, wherein the service request message includes a power headroom of the wireless device in response to the apparatus determining that the resource utilization limitation exceeds the reporting threshold; and receive an uplink resource allocation grant from the base station, wherein the resource allocation is based at least in part on the service request message. ### Claim 18 (depends on 17) The apparatus of claim 17, wherein the resource utilization limitation is one or more of: an amount of remaining power that can be used for uplink transmission, a limit to the number of resource blocks that can be used during an uplink transmission based on the power headroom, and a resource limit that depends upon the wireless device transmit power. ### Claim 19 (depends on 17) The apparatus of claim 17, wherein the processor is further configured to implement the software instructions to cause the wireless device to determine the resource utilization limitation after receiving a random access channel response, wherein the resource utilization limitation is based at least in part on instructions in the random access channel response; where the wireless device receives the random access channel response in response to transmitting a random access channel. ### Claim 20 (depends on 19) The apparatus of claim 19, wherein the random access channel response includes instructions to adjust transmission timing and power control.