Title:
PRECODING MATRIX INDICATION METHOD AND RELATED APPARATUS
Document Type and Number:
WIPO Patent Application WO/2019/218906
Kind Code:
A1
Abstract:
Provided by the present application are a precoding matrix indication method and a related apparatus, comprising: a transmitting terminal determines a precoding matrix indicator (PMI) of at least one first subband group in a broadband and a PMI of at least one second subband group in the broadband, wherein the PMI of the first subband group is an absolute PMI determined on the basis of a reference codebook or a differential PMI determined on the basis of a differential codebook, the PMI of the second subband group is based on a differential PMI determined in the differential codebook, and the differential codebook is obtained by mapping from the reference codebook; and the transmitting terminal transmits the PMI of the at least one first subband group and the PMI of the at least one second subband group. Hence, the embodiments of the present application allow each subband group to have a corresponding absolute PMI or a differential PMI, and precoding matrices used in the subbands in a same subband group are the same, while the precoding matrices used in different subband groups may be different, thereby improving the anti-interference ability between the subband groups, and greatly improving the frequency spectrum efficiency and performance of a system.
Inventors:
HANG HAICUN (CN)
JIN HUANGPING (CN)
BI XIAOYAN (CN)
WANG FENG (CN)
SHANG PENG (CN)
JIA MING (CN)
JIN HUANGPING (CN)
BI XIAOYAN (CN)
WANG FENG (CN)
SHANG PENG (CN)
JIA MING (CN)
Application Number:
PCT/CN2019/085947
Publication Date:
November 21, 2019
Filing Date:
May 08, 2019
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04B7/0456
Foreign References:
| CN103248457A | 2013-08-14 | |||
| CN102291213A | 2011-12-21 | |||
| CN103731244A | 2014-04-16 | |||
| US20110194631A1 | 2011-08-11 |
Other References:
SAMSUNG: "Further Performance Evaluations of Differential Codebooks for Rel. 8 PMI Enhancements", 3GPP TSG RAN WG1 MEETING #60 R1-101164, vol. RAN WG1, 16 February 2010 (2010-02-16), XP050418701
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
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