Patent ID: 9007995
Filing Date: 2015-04-14
Classification: H04B,H04L,H04W

Abstract:
1. A method for feeding back channel information based on a codebook in a communication system, comprising: measuring, by a terminal in the communication system, parameters of a downlink channel between the terminal and a base station of the communication system; selecting at least two pre-coding matrices suitable for both single-user multiple input multiple output (SU-MIMO) transmission and multi-user multiple input multiple output (MU-MIMO) transmission from a pre-coding codebook, to facilitate dynamic switching between the SU-MIMO transmission and the MU-MIMO transmission, the pre-coding codebook being a set of pre-coding matrices; and feeding back first information indicating the at least two pre-coding matrices to the base station, wherein the selecting of the at least two pre-coding matrices comprises: