Invention Grant
- Patent Title: Methods and apparatuses for transmitting coding indication information and determining precoding matrix
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Application No.: US15755090Application Date: 2016-07-19
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Publication No.: US10567049B2Publication Date: 2020-02-18
- Inventor: Hui Li , Shanzhi Chen , Qiubin Gao , Runhua Chen , Wenhong Chen , Tamrakar Rakesh
- Applicant: China Academy of Telecommunications Technology
- Applicant Address: CN Beijing
- Assignee: China Academy of Telecommunications Technology Beijing
- Current Assignee: China Academy of Telecommunications Technology Beijing
- Current Assignee Address: CN Beijing
- Agency: Kilpatrick Townsend & Stockton, LLP
- Priority: CN201510524737 20150824
- International Application: PCT/CN2016/090523 WO 20160719
- International Announcement: WO2017/032185 WO 20170302
- Main IPC: H04B7/0456
- IPC: H04B7/0456 ; H03M1/26 ; H04L25/03 ; H04B7/06

Abstract:
Methods and apparatuses for transmitting coding indication information and determining a precoding matrix, for use in resolving the problem that the resolution of code words in a codebook generated by using a combination of a beam vector subgroup and column selection cannot be flexibly adjusted. The method comprises: determining first precoding indication information and second precoding indication information, the first precoding indication information corresponding to a first-stage precoding matrix, the second precoding indication information corresponding to a direction weighting vector and a phase adjustment factor, the direction weighting vector being used for performing interpolation processing on parts representing angles corresponding to beam vectors in the all beam vectors in each polarization direction in the first-stage precoding matrix, the phase adjusting factor being used for performing phase adjustment on different polarization directions of the first-stage precoding matrix, and the first-stage precoding matrix, the direction weighting vector, and the phase adjustment factor being used for generating a precoding matrix. The resolution of a precoding matrix is flexibly adjusted by using a direction weighting vector.
Public/Granted literature
- US20180241445A1 METHODS AND APPARATUSES FOR TRANSMITTING CODING INDICATION INFORMATION AND DETERMINING PRECODING MATRIX Public/Granted day:2018-08-23
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