Invention Grant
- Patent Title: Method, codebook and base station for precoding
- Patent Title (中): 方法，码本和预编码基站
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Application No.: US14541547Application Date: 2014-11-14
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Publication No.: US09571310B2Publication Date: 2017-02-14
- Inventor: Yongxing Zhou , Qiang Wu
- Applicant: HUAWEI TECHNOLOGIES CO., LTD.
- Applicant Address: CN Shenzhen
- Assignee: HUAWEI TECHNOLOGIES CO., LTD.
- Current Assignee: HUAWEI TECHNOLOGIES CO., LTD.
- Current Assignee Address: CN Shenzhen
- Agency: Huawei Technologies Co., Ltd.
- Priority: CN200910091108 20090807; CN200910165292 20090814
- Main IPC: H04L25/03
- IPC: H04L25/03 ; H04B7/04 ; H04B17/318 ; H04W72/04
Abstract:
A method, a codebook, and a Base Station (BS) for precoding are provided. The precoding method includes: obtaining a total uplink power of a User Equipment (UE); if the total uplink power is greater than ¾ of a rated total transmit power of antennas, selecting a codeword from a first codebook with imbalanced power between layers; otherwise, selecting a codeword from the first codebook and a second codebook with balanced power between layers, so as for precoding data to be transmitted according to the selected codeword.
Public/Granted literature
- US20150071253A1 Method, Codebook and Base Station for Precoding Public/Granted day:2015-03-12
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