Title:
METHOD AND DEVICE FOR TRANSMITTING CHANNEL STATE INFORMATION
Document Type and Number:
WIPO Patent Application WO/2018/059072
Kind Code:
A1
Abstract:
Disclosed in the present invention are a method and a device for transmitting channel state information, for solving the problem that due to the limitation of a codebook structure, the prior art can only provide channel state information with limited precision and it is not suitable for a base station to use a transmission scheme of an advanced preprocessing algorithm. The method comprises: a terminal determining a basis matrix according to a candidate wave beam vector set, the basis matrix being a matrix formed by N wave beam vectors from the candidate wave beam vector set, the N being a positive integer; the terminal determining a combined coefficient matrix according to the basis matrix and a channel state parameter; the terminal feeding back the identification information of the basis matrix and the combined coefficient matrix to a base station. The invention effectively improves the precision of channel state information feedback, and improves the performance of multi-antenna transmission, especially multiple user-multiple input multiple output (MU-MIMO) transmission.
Inventors:
GAO QIUBIN (CN)
CHEN RUNHUA (CN)
RAKESH TAMRAKAR (CN)
LI HUI (CN)
HUANG QIUPING (CN)
CHEN RUNHUA (CN)
RAKESH TAMRAKAR (CN)
LI HUI (CN)
HUANG QIUPING (CN)
Application Number:
PCT/CN2017/092647
Publication Date:
April 05, 2018
Filing Date:
July 12, 2017
Export Citation:
Assignee:
CHINA ACADEMY TELECOMMUNICATIONS TECHNOLOGY (CN)
International Classes:
H04W88/02
Foreign References:
| CN101286824A | 2008-10-15 | |||
| CN103178888A | 2013-06-26 | |||
| CN105933046A | 2016-09-07 | |||
| CN102970103A | 2013-03-13 | |||
| US20120218948A1 | 2012-08-30 | |||
| US20130083758A1 | 2013-04-04 |
Other References:
See also references of EP 3522677A4
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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