发明名称 |
METHOD, SYSTEM AND DEVICE FOR TRANSMITTING PRE-CODED INDICATION INFORMATION AND DETERMINING PRE-CODING MATRIX |
摘要 |
An embodiment of the present application relates to the technical field of wireless communications, in particular to a method, system and device for transmitting pre-coded indication information and determining a pre-coding matrix. In the prior art, the existing codebook is designed for horizontal beamforming/pre-coding, and will reduce the performance thereof if directly applied in three-dimensional beamforming/pre-coding technique. The present application solves the problem. The method in the embodiment of the present application comprises: a user equipment (UE) determines and transmits first pre-coded indication information and second pre-coding indication information, the pre-coding matrix being equal to the function matrix of a first component pre-coding matrix and a second component pre-coding matrix, a sub-matrix on the diagonal of the first component pre-coding matrix being the Kronecker product of two diagonal matrixes, the second component pre-coding matrix being formed by a beam rotation vector equaling to the Kronecker product of two vectors. The embodiment of the present application improves the performance of the three-dimensional beamforming/pre-coding technique. |
申请公布号 |
US2015280798(A1) |
申请公布日期 |
2015.10.01 |
申请号 |
US201314434396 |
申请日期 |
2013.10.30 |
申请人 |
China Academy of Telecommunications Technology |
发明人 |
Gao Qiubin;Tamrakar Rakesh;Su Xin |
分类号 |
H04B7/04;H04L5/14;H04W16/28 |
主分类号 |
H04B7/04 |
代理机构 |
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代理人 |
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主权项 |
1. A method for transmitting a pre-coding indicator, the method comprising:
determining, by a UE, a first pre-coding indicator and a second pre-coding indicator, wherein the first pre-coding indicator and the second pre-coding indicator correspond to a pre-coding matrix which is equal to a matrix as a function of a first component pre-coding matrix and a second component pre-coding matrix, the first component pre-coding matrix is a block diagonal matrix with sub-matrixes on the diagonal being a Kronecker product of two diagonal matrixes, and the second component pre-coding matrix is constructed by beam-rotating vectors, each of the beam-rotating vectors is equal to a Kronecker product of two vectors; and transmitting, by the UE, the first pre-coding indicator and the second pre-coding indicator to a network side. |
地址 |
Beijing CN |