Title:
JT PRECODING WEIGHT MATRIX GENERATION METHOD, DEVICE, AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/023828
Kind Code:
A1
Abstract:
The present application discloses a JT precoding weight matrix generation method, device, and system, relating to the field of communication technologies, capable of reducing transmission delays and avoiding expiration of channel information. The method comprises: a network side device acquiring r
1
, r
2
, w
1
, w
2
, and w
3
, wherein r
1
indicates the number of transmission layers of a serving cell, r
2
indicates the number of transmission layers of a coordinated neighboring cell, and w
1
indicates a complex matrix obtained through calculation according to channel information h
1
of the serving cell, w
2
indicates a complex matrix orthogonal to h
1
w
1
or h
2
w
3
, and w
3
satisfies h
2
w
3
= h
1
w
1
diag(α
i
); the network side device generating a JT precoding weight matrix, comprising an all-zero submatrix with TxNum rows and r
2
columns, a first precoding weight submatrix, a second precoding weight submatrix, and a third precoding weight submatrix, wherein the first precoding weight submatrix is generated according to w
1
, the first precoding weight submatrix and the serving cell in single cell mode uses a same precoding weight matrix, the first precoding weight submatrix and the all-zero submatrix are used for the serving cell to perform a precoding operation, and the second precoding weight submatrix and the third precoding weight submatrix are used for the coordinated neighboring cell to perform a precoding operation.
Inventors:
WU XIAN (CN)
QIAN FENG (CN)
LOU QUNFANG (CN)
QIAN FENG (CN)
LOU QUNFANG (CN)
Application Number:
PCT/CN2017/095102
Publication Date:
February 07, 2019
Filing Date:
July 31, 2017
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04W28/18; H04L29/02
Foreign References:
| CN106470055A | 2017-03-01 | |||
| CN103580799A | 2014-02-12 | |||
| CN106453167A | 2017-02-22 | |||
| GB2495168A | 2013-04-03 |
Attorney, Agent or Firm:
CHINABLE IP (CN)
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