METHOD, SYSTEM AND DEVICE OF TRANSMITTING PRE-CODING INDICATION INFORMATION AND DETERMINING PRE-CODING MATRIX

摘要

The present application relates to the technical field of wireless communication, especially to a method, system and device of transmitting pre-coding indication information and determining pre-coding matrix, used for solving the problem of performance decline caused by directly applying a codebook to the technique of three-dimensional beam forming/pre-coding. The embodiments of the method of the present application includes: user equipment determines and transmits the first pre-coding indication information, the second pre-coding indication information and the third pre-coding indication information, wherein these indication information correspond to the pre-coding matrix, and the pre-coding matrix is equal to the functional matrix of the first component pre-coding matrix which is a diagonal matrix, the second component pre-coding matrix which is a diagonal matrix and the third component pre-coding matrix which is composed of beam circumrotation vectors equaling to the Kronecker product of two vectors. By applying the solutions of the embodiments of the present application, the performance of the technique of three-dimensional beam forming/pre-coding can be improved.