METHOD AND BASE STATION FOR COORDINATED MULTI POINT DATA TRANSMISSION

Title:

METHOD AND BASE STATION FOR COORDINATED MULTI POINT DATA TRANSMISSION

Document Type and Number:

WIPO Patent Application WO/2013/185732

Kind Code:

A3

Abstract:

A method and base station for coordinated multi point (CoMP) data transmission. The method comprises: a base station receiving a single-cell CQI value reported by a UE; searching an SINR-CQI mapping table according to the single-cell CQI value to obtain a sub-band/broadband SINR value; recalculating a CQI according to the sub-band/broadband SINR value to obtain a recalculated sub-band/broadband CQI value; and selecting modulation and coding scheduling data to be transmitted according to the recalculated sub-band/broadband CQI value. By means of the method and base station according to the embodiments of the present invention, in a CoMP system and under a joint transmission (JT) scenario, the base station recalculates a JT CQI according to the single-cell CQI value fed back by the UE to obtain a recalculated sub-band/broadband CQI value, and selects modulation and coding scheduling data to be transmitted according to the recalculated sub-band/broadband CQI value, thereby improving the precision of the CQI value used in the scheduling of the base station, and reducing the oscillation during an AMC process.

Inventors:

MO LINMEI (CN)
ZHAO YAJUN (CN)
SUN BAOYU (CN)
HUANG CHEN (CN)
XU HANQING (CN)
LI YUJIE (CN)
QIN HONGFENG (CN)
CHEN GUOFENG (CN)
YUAN HONGFENG (CN)
ZHANG XIN (CN)

Application Number:

PCT/CN2013/081453

Publication Date:

February 06, 2014

Filing Date:

August 14, 2013

Export Citation:

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Assignee:

ZTE CORP (CN)

International Classes:

H04W24/00; H04B7/06

Foreign References:

CN102291740A	2011-12-21
CN102130758A	2011-07-20
CN102036393A	2011-04-27
CN102404028A	2012-04-04
CN102457359A	2012-05-16

Other References: