ENHANCED HYBRID CSI-RS FOR FD-MIMO

WIPO Patent Application WO/2017/161590

A1

Enhanced hybrid channel state information (CSI) reference signal (CSI-RS) for full dimension multiple input, multiple output (FD-MIMO) is discussed in which a base station configures a first CSI-RS resource for non-precoded CSI-RS and a second CSI-RS resource for beamformed CSI-RS. The first and second CSI-RS resources are associated with the same CSI process in a hybrid CSI-RS operation. The UE provides a first CSI report including a first rank and precoding matrix indicator (PMI) based on measurement of the non-precoded CSI-RS. The base station may use this first CSI report for the beamforming of the beamformed CSI-RS. The UE further provides a second CSI report including a second rank, second PMI, and CQI based on measurement of the beamformed CSI-RS. Additional aspects may provide for a base station to aggregate multiple two-port CSI-RS resource configurations into a single multiport CSI-RS resource configuration that may be dynamically shared between different UEs.

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WO/2018/227590	SECONDARY PATH CONFIGURATION
JP5281108	How to compensate for multipath

WEI CHAO (US)
CHEN BO (US)
WU LIANGMING (US)
HOU JILEI (US)

PCT/CN2016/077430

September 28, 2017

March 25, 2016

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QUALCOMM INC (US)
WEI CHAO (CN)
CHEN BO (CN)
WU LIANGMING (CN)
HOU JILEI (CN)

H04W72/04

US20120014349A1	2012-01-19
CN101931456A	2010-12-29
CN102265576A	2011-11-30

NTD PATENT & TRADEMARK AGENCY LIMITED (CN)

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