# US 12,004,092 B2 · Power control techniques for a communication system that includes a repeater > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,004,092 B2 - Document ID: US12004092B2 - Status: Granted - Kind: B2 - Application number: 17/213,639 - Filed: 2021-03-26 - Published: 2021-09-30 - Granted: 2024-06-04 - Earliest claimed: 2020-03-31 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Navid Abedini; Junyi Li; Ashwin Sampath - Web page: https://patentgrep.com/patent/US12004092B2 ## CPC - H04W 52/365: {Power headroom reporting} - H04W 52/52: using AGC [Automatic Gain Control] circuits or amplifiers - H04B 1/005: {adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges} - H04B 1/04: Circuits - H04B 7/155: Ground-based stations (H04B7/204 takes precedence) - H04B 7/15535: {Control of relay amplifier gain (amplifier gain control in general H03G3/00; gain control reducing self - or loop interference H04B7/15578)} - H04W 52/18: TPC being performed according to specific parameters - H04W 52/242: {taking into account path loss} - H04B 7/0617: {for beam forming} - H04B 2001/0416: {having gain or transmission power control} - H04W 52/14: Separate analysis of uplink or downlink - H04W 52/367: {Power values between minimum and maximum limits, e.g. dynamic range} - H04W 52/38: TPC being performed in particular situations - 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 This disclosure generally relates to systems, devices, apparatuses, products, and methods for wireless communication. For example, a communication system may include a repeater that relays communications between communication devices. The repeater determines one or more power configuration parameters associated with the repeater and transmits the one or more power configuration parameters to a controlling node, such as a base station or other entity. The repeater receives, from the controlling node, gain configuration information determined based on the one or more power configuration parameters. A repeater may receive a communication, determine a gain value based on the gain configuration information, and apply the gain value to the received communication to create a gain adjusted communication for transmission to another device. ## Claims ### Claim 1 A repeater that relays communications between a first communication device and a second communication device, comprising: a processor; and a memory coupled with the processor, wherein the memory includes instructions executable by the processor to cause the repeater to: determine one or more power configuration parameters associated with the repeater; transmit the one or more power configuration parameters from the repeater to a controlling node, wherein the one or more power configuration parameters transmitted from the repeater to the controlling node comprise a power headroom parameter associated with the repeater, a current transmit power parameter associated with the repeater, or a current gain setting value associated with the repeater; receive, at the repeater from the controlling node, gain configuration information determined for the repeater based on the power headroom parameter associated with the repeater, the current transmit power parameter associated with the repeater, or the current gain setting value associated with the repeater; receive a communication from the first communication device; determine a gain value for the repeater based on the gain configuration information; apply the gain value at the repeater to the received communication to create a gain adjusted communication; and transmit the gain adjusted communication from the repeater to the second communication device. ### Claim 2 (depends on 1) The repeater of claim 1, wherein the one or more power configuration parameters transmitted from the repeater to the controlling node comprise the power headroom parameter associated with the repeater, wherein the gain configuration information is determined for the repeater based on the power headroom parameter associated with the repeater. ### Claim 3 (depends on 1) The repeater of claim 1, wherein the one or more power configuration parameters transmitted from the repeater to the controlling node comprise the current transmit power parameter associated with the repeater, wherein the gain configuration information is determined for the repeater based on the current transmit power parameter associated with the repeater. ### Claim 4 (depends on 1) The repeater of claim 1, wherein the one or more power configuration parameters transmitted from the repeater to the controlling node comprise the current gain setting value associated with the repeater, wherein the gain configuration information is determined for the repeater based on the current gain setting value associated with the repeater. ### Claim 5 (depends on 1) The repeater of claim 1, wherein the one or more power configuration parameters transmitted from the repeater to the controlling node comprise a maximum gain setting value associated with the repeater, wherein the gain configuration information is determined for the repeater based on the maximum gain setting value associated with the repeater. ### Claim 6 (depends on 1) The repeater of claim 1, wherein the one or more power configuration parameters transmitted from the repeater to the controlling node comprise a maximum output power value associated with the repeater, wherein the gain configuration information is determined for the repeater based on the maximum output power value associated with the repeater. ### Claim 7 (depends on 1) The repeater of claim 1, wherein the memory includes instructions executable by the processor to cause the repeater to transmit the one or more power configuration parameters to the controlling node based on a periodic schedule. ### Claim 8 (depends on 1) The repeater of claim 1, wherein the memory includes instructions executable by the processor to cause the repeater to detect an event trigger and transmit the one or more power configuration parameters to the controlling node in response to the event trigger. ### Claim 9 (depends on 8) The repeater of claim 8, wherein the instructions executable by the processor to cause the repeater to detect the event trigger comprise instructions executable by the processor to cause the repeater to: detect a request from the controlling node for updated power configuration parameters; detect satisfaction of an output power threshold condition; or detect satisfaction of a gain setting threshold condition. ### Claim 10 (depends on 1) The repeater of claim 1, wherein the memory includes instructions executable by the processor to cause the repeater to: determine a first set of power configuration parameters specific to a first communication beam; determine a second set of power configuration parameters specific to a second communication beam, wherein the second set of power configuration parameters are different than the first set of power configuration parameters; and transmit the first set of power configuration parameters, the second set of power configuration parameters, or both, to the controlling node. ### Claim 11 (depends on 1) The repeater of claim 1, wherein the memory includes instructions executable by the processor to cause the repeater to: determine a first set of power configuration parameters specific to a first interface with the first communication device; determine a second set of power configuration parameters specific to a second interface with the second communication device, wherein the second set of power configuration parameters are different than the first set of power configuration parameters; and transmit the first set of power configuration parameters, the second set of power configuration parameters, or both, to the controlling node. ### Claim 12 (depends on 1) The repeater of claim 1, further comprising: one or more receive antennas; and one or more transmit antennas; wherein the one or more receive antennas are configured to receive the communication as an analog millimeter wave signal based on receive beamforming; wherein the instructions executable by the processor to cause the repeater to apply the gain value comprise instructions executable by the processor to cause the repeater to amplify the analog millimeter wave signal without performing analog-to-digital conversion of the analog millimeter wave signal; and wherein the one or more transmit antennas are configured to transmit the amplified analog millimeter wave signal based on transmit beamforming. ### Claim 13 (depends on 1) The repeater of claim 1, wherein the repeater is a layer-1 millimeter wave repeater. ### Claim 14 (depends on 1) The repeater of claim 1, further comprising a power amplifier and a variable gain amplifier set based on the gain configuration information received from the controlling node. ### Claim 15 (depends on 1) The repeater of claim 1, wherein the gain configuration information received at the repeater from the controlling node explicitly specifies the gain value to be used by the repeater. ### Claim 16 (depends on 1) The repeater of claim 1, wherein the instructions executable by the processor to cause the repeater to determine the gain value comprise instructions executable by the processor to cause the repeater to: determine whether the received communication is an uplink communication or a downlink communication; and select the gain value based on the gain configuration information and the determination of whether the received communication is the uplink communication or the downlink communication. ### Claim 17 (depends on 16) The repeater of claim 16, wherein the instructions executable by the processor to cause the repeater to determine the gain value comprise instructions executable by the processor to cause the repeater to select the gain value differently when the received communication is the uplink communication than when the received communication is the downlink communication. ### Claim 18 (depends on 1) The repeater of claim 1, wherein the instructions executable by the processor to cause the repeater to determine the gain value comprise instructions executable by the processor to cause the repeater to determine the gain value based on the gain configuration information received from the controlling node and also based on one or more gain control factors determined locally at the repeater. ### Claim 19 (depends on 1) The repeater of claim 1, wherein the processor is configured to use a different radio access technology (RAT) to transmit the one or more power configuration parameters and receive the gain configuration information than the repeater uses to receive the communication and transmit the gain adjusted communication. ### Claim 20 (depends on 1) The repeater of claim 1, wherein the processor is configured to use a different frequency range within a same radio access technology (RAT) to transmit the one or more power configuration parameters and receive the gain configuration information than the repeater uses to receive the communication and transmit the gain adjusted communication. ### Claim 21 (depends on 1) The repeater of claim 1, wherein the processor is configured to use a different bandwidth part within a same frequency range of a same radio access technology (RAT) to transmit the one or more power configuration parameters and receive the gain configuration information than the repeater uses to receive the communication and transmit the gain adjusted communication. ### Claim 22 (depends on 1) The repeater of claim 1, wherein the controlling node is the first communication device, and wherein the first communication device is a base station. ### Claim 23 A method of wireless communication performed by a repeater that relays communications between a first communication device and a second communication device, comprising: determining one or more power configuration parameters associated with the repeater; transmitting the one or more power configuration parameters from the repeater to a controlling node, wherein the one or more power configuration parameters transmitted from the repeater to the controlling node comprise a power headroom parameter associated with the repeater, a current transmit power parameter associated with the repeater, or a current gain setting value associated with the repeater; receiving, at the repeater from the controlling node, gain configuration information determined for the repeater based on the power headroom parameter associated with the repeater, the current transmit power parameter associated with the repeater, or the current gain setting value associated with the repeater; receiving a communication from the first communication device; determining a gain value for the repeater based on the gain configuration information; applying the gain value for the repeater to the received communication to create a gain adjusted communication; and transmitting the gain adjusted communication from the repeater to the second communication device. ### Claim 24 A method of wireless communication performed by a controlling node that communicates with a repeater, comprising: receiving, at the controlling node from the repeater, one or more power configuration parameters associated with the repeater, wherein the one or more power configuration parameters received at the controlling node from the repeater comprise a power headroom parameter associated with the repeater, a current transmit power parameter associated with the repeater, or a current gain setting value associated with the repeater; determining gain configuration information for the repeater based on the power headroom parameter associated with the repeater, the current transmit power parameter associated with the repeater, or the current gain setting value associated with the repeater; and transmitting the gain configuration information from the controlling node to the repeater. ### Claim 25 A controlling node that communicates with a repeater, comprising: a processor; and a memory coupled with the processor, wherein the memory includes instructions executable by the processor to cause the controlling node to: receive, at the controlling node from the repeater, one or more power configuration parameters associated with the repeater, wherein the one or more power configuration parameters received at the controlling node from the repeater comprise a power headroom parameter associated with the repeater, a current transmit power parameter associated with the repeater, or a current gain setting value associated with the repeater; determine gain configuration information for the repeater based on the power headroom parameter associated with the repeater, the current transmit power parameter associated with the repeater, or the current gain setting value associated with the repeater; and transmit the gain configuration information from the controlling node to the repeater. ### Claim 26 (depends on 25) The method of claim 25, wherein the controlling node is a base station, and wherein the memory includes instructions executable by the processor to cause the base station to: communicate with a communication device through the repeater based on an application of the gain configuration information at the repeater. ### Claim 27 (depends on 25) The controlling node of claim 25, wherein the memory includes instructions executable by the processor to cause the controlling node to: coordinate selection of a transmission power level for use at a first communication device together with a gain value to be applied at the repeater based on at least one of: a target receive power level at a second communication device for a signal transmitted from the first communication device through the repeater to the second communication device; a target transmitter power consumption level; or a target maximum interference level. ### Claim 28 (depends on 25) The controlling node of claim 25, wherein the memory includes instructions executable by the processor to cause the controlling node to: receive a received power report from at least one of the repeater or a first communication device; and determine a path loss experienced between the first communication device and a second communication device through the repeater based on the received power report; wherein the instructions executable by the processor to cause the controlling node to determine the gain configuration information for the repeater comprise instructions executable by the processor to cause the controlling node to select a gain value for use at the repeater based on the path loss determination and the one or more power configuration parameters associated with the repeater. ### Claim 29 (depends on 25) The controlling node of claim 25, wherein the memory includes instructions executable by the processor to cause the controlling node to: determine a transmission power level used by a first communication device; determine a received power level at a second communication device; and determine a path loss experienced between the first communication device and the second communication device through the repeater based on the transmission power level and the received power level; wherein the instructions executable by the processor to cause the controlling node to determine the gain configuration information for the repeater comprise instructions executable by the processor to cause the controlling node to select a gain value for use at the repeater based on the path loss determination and the one or more power configuration parameters associated with the repeater. ### Claim 30 (depends on 25) The controlling node of claim 25, wherein the instructions executable by the processor to cause the controlling node to transmit the gain configuration information comprise instructions executable by the processor to cause the controlling node to specify a first gain value for use at the repeater for communications from a first communication device through the repeater to a second communication device and a second gain value, different than the first gain value, for use at the repeater for communications from the second communication device through the repeater to the first communication device.