Power characteristics reporting for signaling using single carrier modulation

Patent metadata

Field	Value
Publication number	US-12483283-B2
Application number	US-202217592234-A
Country	US
Kind code	B2
Filing date	Feb 3, 2022
Priority date	Feb 3, 2022
Publication date	Nov 25, 2025
Grant date	Nov 25, 2025

Abstract

Methods, systems, and devices for wireless communications are described. A transmitting device may operate in a non-linear region of a power amplifier by reporting an indication of power amplifier characteristics and backoff values to a receiving device. The indication of the power amplifier characteristics and the backoff values may be based on power amplifier operation in the non-linear region of power amplifier characteristic curves. The transmitting device may transmit, to the receiving device, signaling using a single carrier waveform at a transmission power in the non-linear region of the power amplifier characteristic curves based on the indication. The receiving device may receive the signaling and use the power amplifier characteristics and the backoff values to perform debiasing and nonlinearity corrections to recover the original signaling.

First claim

What is claimed is:

1 . A method for wireless communications at a first device, comprising:
transmitting, to a second device, a message indicating a set of power amplifier characteristics and a set of power backoff values for each of one or more modulation configurations of the first device, the set of power backoff values being associated with a non-linear region of power amplifier characteristic curves of the first device; and transmitting, to the second device, based at least in part on transmitting the message indicating the set of power amplifier characteristics and the set of power backoff values, signaling using a single carrier waveform at a transmission power in the non-linear region of the power amplifier characteristic curves based at least in part on applying one or more power backoff values of the set of power backoff values.

2 . The method of claim 1 , wherein the message further comprises an indication of a capability to support transmission with the transmission power in the non-linear region of the power amplifier characteristic curves, wherein transmitting the signaling is based at least in part on having the capability.

3 . The method of claim 1 , further comprising receiving, from the second device, an indication of a capability for the second device to receive signaling with the transmission power in the non-linear region of the power amplifier characteristic curves, wherein the message indicating the set of power amplifier characteristics and the set of power backoff values is transmitted based at least in part on receiving the indication of the capability.

4 . The method of claim 1 , wherein the message comprises an indication, for each of a plurality of antenna ports of the first device, for each of a plurality of antenna panels of the first device, for each of a plurality of power amplifiers of the first device, for each of a plurality of polarizations supported at the first device, or for any combination thereof, of a respective set of power amplifier characteristics and a respective set of power backoff values, wherein transmitting the signaling is further based at least in part on the set of power amplifier characteristics and the set of power backoff values associated with an antenna port of the plurality of antenna ports, an antenna panel of the plurality of antenna panels, a power amplifier of the plurality of power amplifiers, a polarization of the plurality of polarizations, or any combination thereof, of the first device.

5 . The method of claim 1 , wherein the message comprises an indication, for each of a plurality of modulation constellation types, for each of a plurality of modulation orders, for each of a plurality of modulation and coding schemes, for each of a plurality of constellation radii, or for any combination thereof, of a respective set of power amplifier characteristics and a respective set of power backoff values, wherein transmitting the signaling is further based at least in part on the set of power amplifier characteristics and the set of power backoff values associated with a modulation constellation type of the plurality of modulation constellation types, a modulation order of the plurality of modulation orders, a modulation and coding scheme of the plurality of modulation and coding schemes, a constellation radius of the plurality of constellation radii, or any combination thereof, of the first device.

6 . The method of claim 1 , wherein the message further comprises an indication, for each of the one or more modulation configurations of the first device, of a debiasing factor, wherein transmitting the signaling is further based at least in part on the debiasing factor for a modulation configuration of the one or more modulation configurations.

7 . The method of claim 1 , wherein the message comprises an indication, for each of a plurality of temperature ranges of a power amplifier of the first device, of a respective set of power amplifier characteristics and a respective set of power backoff values, wherein transmitting the signaling is based at least in part on the set of power amplifier characteristics and the set of power backoff values associated with a temperature range of the power amplifier of the first device.

8 . The method of claim 7 , further comprising transmitting, to the second device, an indication of a temperature of the power amplifier of the first device.

9 . The method of claim 1 , further comprising receiving, from the second device, an indication to enable or disable transmission with the transmission power in the non-linear region of the power amplifier characteristic curves.

10 . The method of claim 9 , wherein the indication to enable or disable transmission with the transmission power in the non-linear region of the power amplifier characteristic curves is received via downlink control information, a medium access control control element, radio resource control signaling, or any combination thereof.

11 . The method of claim 9 , wherein the indication to enable or disable transmission with the transmission power in the non-linear region is received based at least in part on a transmission rank, a precoding, a geolocation of the first device, an indicated error for the set of power amplifier characteristics and the set of power backoff values, a power sensitivity or battery level of the first device, or any combination thereof.

12 . The method of claim 1 , further comprising transmitting, to the second device, an indication to enable or disable reception with the transmission power in the non-linear region of the power amplifier characteristic curves.

13 . The method of claim 1 , further comprising receiving a request from the second device to transmit the message indicating the set of power amplifier characteristics and the set of power backoff values, wherein the message is transmitted based at least in part on receiving the request.

14 . The method of claim 1 , wherein the message is transmitted via control information signaling, a medium access control control element, radio resource control signaling, or any combination thereof.

15 . A method for wireless communications at a first device, comprising:
receiving, from a second device, a message indicating a set of power amplifier characteristics and a set of power backoff values for each of one or more modulation configurations of the second device, the set of power backoff values being associated with a non-linear region of power amplifier characteristic curves of the second device; and receiving, from the second device based at least in part on receiving the message, signaling using a single carrier waveform at a transmission power in the non-linear region of the power amplifier characteristic curves based at least in part on a modulation configuration of the signaling and the set of power amplifier characteristics and the set of power backoff values.

16 . The method of claim 15 , wherein the message further comprises an indication of a capability of the second device to support transmission with the transmission power in the non-linear region of the power amplifier characteristic curves.

17 . The method of claim 15 , further comprising transmitting, to the second device, an indication of a capability to receive signaling with the transmission power in the non-linear region of the power amplifier characteristic curves, wherein the message indicating the set of power amplifier characteristics and the set of power backoff values is received based at least in part on transmitting the indication of the capability.

Assignees

• Qualcomm Inc

Inventors

• Paz Daniel
• Levitsky Michael

Classifications

• H04B2001/0416

  having gain or transmission power control · CPC title

• H04B1/0475

  with means for limiting noise, interference or distortion (H04B1/0483 takes precedence) · CPC title

• H04W72/232

  the control data signalling from the physical layer, e.g. DCI signalling · CPC title

• H04W72/231

  the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling · CPC title

• H04W8/24

  Transfer of terminal data · CPC title