- Patent Title: Techniques and apparatuses for uplink precoder determination using downlink reference signals or downlink precoder determination using uplink reference signals
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Application No.: US15845585Application Date: 2017-12-18
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Publication No.: US11509364B2Publication Date: 2022-11-22
- Inventor: Kaushik Chakraborty , Tao Luo , Sony Akkarakaran , Makesh Pravin John Wilson , Xiao feng Wang , Shengbo Chen
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Harrity & Harrity, LLP
- Main IPC: H04W4/00
- IPC: H04W4/00 ; H04B7/0456 ; H04W72/04 ; H04W24/10 ; H04L5/00 ; H04B7/06 ; H04B7/0452 ; H04L5/14 ; H04L5/16

Abstract:
Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of whether to use uplink reference signals or downlink reference signals for uplink precoder determination. The UE may selectively transmit a plurality of uplink reference signals or one or more measurement reports based at least in part on the indication, wherein the one or more measurement reports are determined based at least in part on measuring a plurality of downlink reference signals. The UE may receive an indication of a precoder, of a plurality of precoders, to be used to precode an uplink communication, wherein the precoder is identified based at least in part on the plurality of uplink reference signals or the one or more measurement reports. The UE may precode the uplink communication using the precoder. Numerous other aspects are provided.
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