CROSS REFERENCE TO RELATED APPLICATIONS & PRIORITY CLAIM

The present application claims priority to and the benefit of the Greek Provisional Patent Application No. 20190100476 filed Oct. 25, 2019, which is hereby incorporated by reference in its entirety as if fully set forth below and for all applicable purposes.

TECHNICAL FIELD

This application relates to wireless communication systems, and more particularly to a subband precoding configuration based on a transmit power parameter.

INTRODUCTION

Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power). A wireless multiple-access communications system may include a number of base stations (BSs), each simultaneously supporting communications for multiple communication devices, which may be otherwise known as user equipment (UE).

To meet the growing demands for expanded mobile broadband connectivity, wireless communication technologies are advancing from the long-term evolution (LTE) technology to a next generation new radio (NR) technology, which may be referred to as 5thGeneration (5G). For example, NR is designed to provide a lower latency, a higher bandwidth or a higher throughput, and a higher reliability than LTE. NR is designed to operate over a wide array of spectrum bands, for example, from low-frequency bands below about 1 gigahertz (GHz) and mid-frequency bands from about 1 GHz to about 6 GHz, to high-frequency bands such as millimeter wave (mmWave) bands. NR is also designed to operate across different spectrum types, from licensed spectrum to unlicensed and shared spectrum. Spectrum sharing enables operators to opportunistically aggregate spectrums to dynamically support high-bandwidth services. Spectrum sharing can extend the benefit of NR technologies to operating entities that may not have access to a licensed spectrum.

A UE may transmit a data stream using one or more antennas to a BS. The UE may apply a precoder to symbols that are mapped to a plurality of subbands. In conventional wideband precoding, the UE applies only one precoder (“a common precoder”) for all subbands across the physical uplink shared channel (PUSCH) assignment. In subband precoding, the UE may apply a plurality of precoders for a plurality of subbands across the PUSCH assignment.

BRIEF SUMMARY OF SOME EXAMPLES

The following summarizes some aspects of the present disclosure to provide a basic understanding of the discussed technology. This summary is not an extensive overview of all contemplated features of the disclosure and is intended neither to identify key or critical elements of all aspects of the disclosure nor to delineate the scope of any or all aspects of the disclosure. Its sole purpose is to present some concepts of one or more aspects of the disclosure in summary form as a prelude to the more detailed description that is presented later.

In an aspect of the disclosure, a method of wireless communication includes receiving, by a user equipment (UE) from a base station (BS), a subband precoding configuration indicating a plurality of precoders for a plurality of subbands based on a transmit power parameter, where each precoder of the plurality of precoders is configured for one subband of the plurality of subbands. The method also includes transmitting, by the UE to the BS, a communication signal in the plurality of subbands using the plurality of precoders, wherein the transmitted communication signal satisfies the transmit power parameter.

In an aspect of the disclosure, an apparatus includes a transceiver configured to: receive, by a UE from a BS, a subband precoding configuration indicating a plurality of precoders for a plurality of subbands based on a transmit power parameter, where each precoder of the plurality of precoders is configured for one subband of the plurality of subbands; and transmit, by the UE to the BS, a communication signal in the plurality of subbands using the plurality of precoders, wherein the transmitted communication signal satisfies the transmit power parameter.

In an aspect of the disclosure, a computer-readable medium having program code recorded thereon, the program code including: code for causing a UE to receive from a BS, a subband precoding configuration indicating a plurality of precoders for a plurality of subbands based on a transmit power parameter, where each precoder of the plurality of precoders is configured for one subband of the plurality of subbands; and code for causing the UE to transmit to the BS, a communication signal in the plurality of subbands using the plurality of precoders, where the transmitted communication signal satisfies the transmit power parameter.

In an aspect of the disclosure, an apparatus includes means for receiving from a BS, a subband precoding configuration indicating a plurality of precoders for a plurality of subbands based on a transmit power parameter, where each precoder of the plurality of precoders is configured for one subband of the plurality of subbands; and means for transmitting to the BS, a communication signal in the plurality of subbands using the plurality of precoders, where the transmitted communication signal satisfies the transmit power parameter.

In an aspect of the disclosure, a method of wireless communication includes transmitting, by a BS to a UE, a subband precoding configuration indicating a plurality of precoders for a plurality of subbands based on a transmit power parameter, where each precoder of the plurality of precoders is configured for one subband of the plurality of subbands. The method also includes receiving, by the BS from the UE, a communication signal in the plurality of subbands based on the plurality of precoders.

In an aspect of the disclosure, an apparatus includes a transceiver configured to: transmit, by a BS to a UE, a subband precoding configuration indicating a plurality of precoders for a plurality of subbands based on a transmit power parameter, where each precoder of the plurality of precoders is configured for one subband of the plurality of subbands; and receive, by the BS from the UE, a communication signal in the plurality of subbands based on the plurality of precoders.

In an aspect of the disclosure, a computer-readable medium having program code recorded thereon, the program code comprising: code for causing a BS to transmit to a UE, a subband precoding configuration indicating a plurality of precoders for a plurality of subbands based on a transmit power parameter, where each precoder of the plurality of precoders is configured for one subband of the plurality of subbands; and code for causing the BS to receive from the UE, a communication signal in the plurality of subbands based on the plurality of precoders.

In an aspect of the disclosure, an apparatus includes means for transmitting to a UE, a subband precoding configuration indicating a plurality of precoders for a plurality of subbands based on a transmit power parameter, where each precoder of the plurality of precoders is configured for one subband of the plurality of subbands; and means for receiving from the UE, a communication signal in the plurality of subbands based the plurality of precoders.

Other aspects, features, and embodiments of the present invention will become apparent to those of ordinary skill in the art, upon reviewing the following description of specific, exemplary embodiments of the present invention in conjunction with the accompanying figures. While features of the present invention may be discussed relative to certain embodiments and figures below, all embodiments of the present disclosure can include one or more of the advantageous features discussed herein. In other words, while one or more embodiments may be discussed as having certain advantageous features, one or more of such features may also be used in accordance with the various embodiments of the invention discussed herein. In similar fashion, while exemplary embodiments may be discussed below as device, system, or method embodiments it should be understood that such exemplary embodiments can be implemented in various devices, systems, and methods.

