PRECODER MATRIX QUANTIZATION FOR COMPRESSED CSI FEEDBACK

Title:

PRECODER MATRIX QUANTIZATION FOR COMPRESSED CSI FEEDBACK

Document Type and Number:

WIPO Patent Application WO/2020/151741

Kind Code:

A1

Abstract:

Certain aspects of the present disclosure provide techniques for precoder matrix quantization for compressed channel state information (CSI) feedback. A method for wireless communications by a user equipment (UE) (120a) includes receiving a CSI report configuration for frequency domain compressed precoder matrix feedback. The CSI report configuration configures the UE (120a) to report, for a plurality of selected beams at a plurality of time domain taps, a frequency domain compression basis vector and a plurality of linear combination coefficients associated with the frequency domain compression (805). For each of the beams, the UE (120a) groups the time domain taps into at least first and second groups. The groups each can have zero, one, or more than one time domain taps (810). The UE (120a) quantizes the corresponding linear combination coefficients and/or frequency domain compression basis vectors based on the grouping (815).

Inventors:

HUANG MIN (US)
HAO CHENXI (US)
ZHANG YU (US)
WEI CHAO (US)
WU LIANGMING (US)
LI QIAOYU (US)

Application Number:

PCT/CN2020/073761

Publication Date:

July 30, 2020

Filing Date:

January 22, 2020

Export Citation:

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Assignee:

QUALCOMM INC (US)
HUANG MIN (CN)
HAO CHENXI (CN)
ZHANG YU (CN)
WEI CHAO (CN)
WU LIANGMING (CN)
LI QIAOYU (CN)

International Classes:

H04B7/00; H04J11/00

Domestic Patent References:

WO2015074262A1

2015-05-28

Foreign References:

US20100271931A1	2010-10-28
US20110032839A1	2011-02-10
US20110111747A1	2011-05-12
US20140269395A1	2014-09-18
US20160156401A1	2016-06-02

Other References: