Digital post-distortion signaling
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may transmit, to a base station (BS), UE capability information including transmission non-linearity information related to a digital post-distortion processing capability; and transmit, to the BS and after transmitting the UE capability information, signaling for digital post-distortion processing. Numerous other aspects are provided.
1 . A user equipment (UE) for wireless communication, comprising:
one or more memories; and
one or more processors, coupled to the one or more memories, configured to cause the UE to:
transmit, to a network entity, UE capability information that identifies a transmission non-linearity for subsequent signaling and that indicates:
a digital post-distortion capability of the UE to compress the subsequent signaling at a transmitter of the UE for digital post-distortion processing at the network entity, wherein the digital post-distortion capability comprises a magnitude of signaling compression capable at the transmitter of the UE;
an ability of the UE to compensate for a non-linearity in a transmitter of the network entity;
a threshold level of compensation for the transmission non-linearity that is to be performed in the UE during transmission of the subsequent signaling;
a capability of achieving a power optimization benefit from the digital post-distortion processing;
a maximum digital post-distortion processing kernel envelope for one or more of non-linearity or memory estimation in the digital post-distortion processing;
a bitmap indicating a maximum dimensioning of a non-linearity order;
a maximum quantity of memory taps; and
a bandwidth factor; and
transmit, to the network entity and after a transmission of the UE capability information, the subsequent signaling with signaling compression for the digital post-distortion processing at the network entity.
2 . The UE of claim 1 , wherein the UE capability information identifies a magnitude of non-linearity that is compensable by the UE.
3 . The UE of claim 1 , wherein the one or more processors are further configured to cause the UE to:
receive, from the network entity, a signal compression capability indication; and
wherein the one or more processors, to transmit the subsequent signaling, are configured to cause the UE to:
transmit the subsequent signaling with the signaling compression based at least in part on receiving the signal compression capability indication.
4 . The UE of claim 1 , wherein the one or more processors are further configured to cause the UE to:
communicate with the network entity to identify a digital post-distortion processing set of kernels; and
wherein the one or more processors, to transmit the subsequent signaling, are configured to cause the UE to:
transmit the subsequent signaling for processing using a digital post-distortion processing kernel not larger than the digital post-distortion processing set of kernels.
5 . The UE of claim 1 , wherein the subsequent signaling is processed for non-linearity estimation and memory estimation to recover information conveyed by the subsequent signaling.
6 . The UE of claim 1 , wherein the UE capability information comprises a physical parameter indicating whether the UE supports uplink transmission power amplifier non-linearity.
7 . The UE of claim 1 , wherein the UE capability information includes information identifying a bandwidth parameter indicating a memory tap configuration.
8 . The UE of claim 1 , wherein the UE capability information includes information identifying a digital post-distortion processing model to use for processing the subsequent signaling.
9 . The UE of claim 1 , wherein the UE capability information identifies a non-linearity model of a power amplifier of the UE.
10 . The UE of claim 1 , wherein the one or more processors are further configured to cause the UE to:
receive information indicating that the network entity is configured to perform the digital post-distortion processing using a digital post-distortion processing algorithm selected from a set of available digital post-distortion processing algorithms.
11 . The UE of claim 1 , wherein the one or more processors are further configured to cause the UE to:
receive information indicating that the network entity is configured to optimize a digital post-distortion processing algorithm based at least in part on a power amplifier of the UE.
12 . A network entity for wireless communication, comprising:
one or more memories; and
one or more processors, coupled to the one or more memories, configured to cause the network entity to:
receive, from a user equipment (UE), UE capability information identifying a transmission non-linearity for subsequent signaling and that that indicates:
a digital post-distortion capability of the UE to compress the subsequent signaling at a transmitter of the UE for digital post-distortion processing at the network entity, wherein the digital post-distortion capability comprises a magnitude of signaling compression capable at the transmitter of the UE;
an ability of the UE to compensate for a non-linearity in a transmitter of the network entity;
a threshold level of compensation for the transmission non-linearity that is to be performed in the UE during transmission of the subsequent signaling;
a capability of achieving a power optimization benefit from the digital post-distortion processing;
a maximum digital post-distortion processing kernel envelope for one or more of non-linearity or memory estimation in the digital post-distortion processing;
a bitmap indicating a maximum dimensioning of a non-linearity order;
a maximum quantity of memory taps; and
a bandwidth factor;
select, based on the UE capability information, a digital post-distortion processing algorithm, from a set of available processing algorithms, for the digital post-distortion processing of the subsequent signaling;
receive, from the UE, the subsequent signaling with signaling compression; and
perform, using the digital post-distortion processing algorithm, the digital post-distortion processing on the subsequent signaling based at least in part on the signaling compression of the subsequent signaling.
13 . The network entity of claim 12 , wherein the one or more processors are further configured to cause the network entity to:
set a post-distortion processing configuration based at least in part on the transmission non-linearity.
14 . The network entity of claim 12 , wherein the one or more processors are further configured to cause the network entity to:
transmit information indicating the digital post-distortion processing based at least in part on the UE capability information; and
wherein the one or more processors, to receive the subsequent signaling, are configured to cause the network entity to:
receive the subsequent signaling based at least in part on the information indicating the digital post-distortion processing.
15 . The network entity of claim 12 , wherein the UE capability information identifies a magnitude of non-linearity that is compensable by the UE.
16 . The network entity of claim 12 , wherein the one or more processors are further configured to cause the network entity to:
transmit a signal compression capability indication; and
wherein the one or more processors, to receive the subsequent signaling, are configured to cause the network entity to:
receive the subsequent signaling with the signaling compression based at least in part on the signal compression capability indication.
17 . The network entity of claim 12 , wherein the one or more processors are further configured to cause the network entity to:
communicate with the UE to identify a digital post-distortion processing set of kernels; and
wherein the one or more processors, to perform the digital post-distortion processing, are configured to cause the network entity to:
perform the digital post-distortion processing using a digital post-distortion processing kernel not larger than the digital post-distortion processing set of kernels.
18 . The network entity of claim 12 , wherein the subsequent signaling is processed for non-linearity estimation and memory estimation to recover information conveyed by the subsequent signaling.
19 . The network entity of claim 12 , wherein the UE capability information comprises a physical parameter indicating whether the UE supports uplink transmission power amplifier non-linearity.
20 . The network entity of claim 12 , wherein the UE capability information includes information identifying a bandwidth parameter indicating a memory tap configuration.
21 . The network entity of claim 12 , wherein the UE capability information includes information identifying a digital post-distortion processing model to use for processing the subsequent signaling.
22 . The network entity of claim 12 , wherein the one or more processors are further configured to cause the network entity to:
transmit information indicating that the network entity is configured to perform the digital post-distortion processing using a digital post-distortion processing algorithm selected from a set of available digital post-distortion processing algorithms.
23 . The network entity of claim 12 , wherein the one or more processors are further configured to cause the network entity to:
transmit information indicating that the network entity is configured to optimize a digital post-distortion processing algorithm based at least in part on a power amplifier of the UE.
24 . The network entity of claim 12 , wherein the UE capability information identifies a non-linearity model of a power amplifier of the UE.
25 . A method of wireless communication performed by a user equipment (UE), comprising:
transmitting, to a network entity, UE capability information that identifies a transmission non-linearity for subsequent signaling and that that indicates;
a digital post-distortion capability of the UE to compress the subsequent signaling at a transmitter of the UE for digital post-distortion processing at the network entity, wherein the digital post-distortion capability comprises a magnitude of signaling compression capable at the transmitter of the UE;
an ability of the UE to compensate for a non-linearity in a transmitter of the network entity;
a threshold level of compensation for the transmission non-linearity that is to be performed in the UE during transmission of the subsequent signaling;
a capability of achieving a power optimization benefit from the digital post-distortion processing;
a maximum digital post-distortion processing kernel envelope for one or more of non-linearity or memory estimation in the digital post-distortion processing;
a bitmap indicating a maximum dimensioning of a non-linearity order;
a maximum quantity of memory taps; and
a bandwidth factor; and
transmitting, to the network entity and after a transmission of the UE capability information, the subsequent signaling with signaling compression for the digital post-distortion processing at the network entity.
26 . The method of claim 25 , wherein the UE capability information identifies a magnitude of non-linearity that is compensable by the UE.
27 . The method of claim 25 , further comprising:
receiving, from the network entity, a signal compression capability indication; and
wherein transmitting the subsequent signaling comprises:
transmitting the subsequent signaling with the signaling compression based at least in part on receiving the signal compression capability indication.
28 . The method of claim 25 , wherein the UE capability information identifies a non-linearity model of a power amplifier of the UE.
29 . The method of claim 25 , further comprising:
receiving information indicating that the network entity is configured to perform the digital post-distortion processing using a digital post-distortion processing algorithm selected from a set of available digital post-distortion processing algorithms.
30 . The method of claim 25 , further comprising:
receiving information indicating that the network entity is configured to optimize a digital post-distortion processing algorithm based at least in part on a power amplifier of the UE.
31 . A method of wireless communication performed by a network entity, comprising:
receiving, from a user equipment (UE), UE capability information identifying a transmission non-linearity for subsequent signaling and that that indicates;
a digital post-distortion capability of the UE to compress the subsequent signaling at a transmitter of the UE for digital post-distortion processing at the network entity, wherein the digital post-distortion capability comprises a magnitude of signaling compression capable at the transmitter of the UE;
an ability of the UE to compensate for a non-linearity in a transmitter of the network entity;
a threshold level of compensation for the transmission non-linearity that is to be performed in the UE during transmission of the subsequent signaling;
a capability of achieving a power optimization benefit from the digital post-distortion processing;
a maximum digital post-distortion processing kernel envelope for one or more of non-linearity or memory estimation in the digital post-distortion processing;
a bitmap indicating a maximum dimensioning of a non-linearity order;
a maximum quantity of memory taps; and
a bandwidth factor;
selecting, based on the UE capability information, a digital post-distortion processing algorithm, from a set of available processing algorithms, for the digital post-distortion processing of the subsequent signaling;
receiving, from the UE, the subsequent signaling with signaling compression; and
performing the digital post-distortion processing on the subsequent signaling based at least in part on the signaling compression of the subsequent signaling.
32 . The method of claim 31 , further comprising:
setting a post-distortion processing configuration based at least in part on the transmission non-linearity.
33 . The method of claim 31 , further comprising:
transmitting information indicating the digital post-distortion processing based at least in part on receiving the UE capability information; and
wherein receiving the subsequent signaling comprises:
receiving the subsequent signaling based at least in part on transmitting the information indicating the digital post-distortion processing.