DYNAMIC CSI-RS TRANSMISSION FOR ENHANCED FD-MIMO

Title:

DYNAMIC CSI-RS TRANSMISSION FOR ENHANCED FD-MIMO

Document Type and Number:

WIPO Patent Application WO/2017/190626

Kind Code:

A1

Abstract:

Dynamic channel state information (CSI) reference signal (CSI-RS) activation/deactivation via layer 1 signaling is discussed. An eNB may configure multiple dynamic CSI-RS resource configurations for a given user equipment (UE). Multiple dynamic CSI-RS configurations may be associated with CSI processes, and also one or more dynamic CSI-RS resources may be associated with multiple CSI processes. Each dynamic CSI-RS resource configuration may include the number of ports, RE locations, and power ratio, as well as the subframe configuration, which may include periodicity and subframe offset. The eNB may dynamically trigger or release the different dynamic CSI-RS resources through layer 1 signaling. Additional aspects provide for ways to determine dynamic CSI-RS transmission instances, to enhance rate matching to support dynamic CSI-RS transmissions, and to report CSI for dynamic CSI-RS resources.

Inventors:

WEI CHAO (US)
CHEN WANSHI (US)
GAAL PETER (US)

Application Number:

PCT/CN2017/082223

Publication Date:

November 09, 2017

Filing Date:

April 27, 2017

Export Citation:

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Assignee:

QUALCOMM INC (US)
WEI CHAO (CN)
CHEN WANSHI (US)
GAAL PETER (US)

International Classes:

H04W24/02; H04L1/00

Foreign References:

CN104584476A	2015-04-29
CN103391174A	2013-11-13
CN102938688A	2013-02-20
US20150288505A1	2015-10-08
US20140044040A1	2014-02-13

Other References: