METHOD AND APPARATUS FOR DETERMINING QUANTITY OF CHANNEL QUALITY INDICATORS (CQI)

Title:

METHOD AND APPARATUS FOR DETERMINING QUANTITY OF CHANNEL QUALITY INDICATORS (CQI)

Document Type and Number:

WIPO Patent Application WO/2016/169235

Kind Code:

A1

Abstract:

Provided are a method and apparatus for determining the quantity of channel quality indicators (CQI). The method comprises: a terminal determining the quantity of layers or the quantity of CQIs needing to be fed back according to at least one piece of the following information: the quantity of ports of a channel state information referenced signal (CSI-RS), the quantity of ports of a downlink demodulation reference signal (DMRS), and a configuration signalling of a base station. The present invention solves the problem of non-matching between CQIs reported by a TDD system under an FD-MIMO and CQIs actually needing to be used in the related art, improves the reliability of downlink transmission, saves overheads of a downlink signalling, and improves the downlink transmission performance.

Inventors:

WANG YUXIN (CN)
CHEN YIJIAN (CN)
LI YU NGOK (CN)

Application Number:

PCT/CN2015/092226

Publication Date:

October 27, 2016

Filing Date:

October 19, 2015

Export Citation:

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Assignee:

ZTE CORP (CN)

International Classes:

H04W40/12

Domestic Patent References:

WO2013171152A1

2013-11-21

Foreign References:

CN101789849A	2010-07-28
CN102291213A	2011-12-21
EP2810508A1	2014-12-10

Other References: