Patent ID: 8989115
Filing Date: 2015-03-24
Classification: H04B,H04L

Abstract:
1. A method of transmitting precoding matrix information by a first user equipment (UE) in a wireless communication system in which a plurality of UEs simultaneously receive a signal from a base station, the method comprising: determining a first precoding matrix which is a precoding matrix for the first UE within a predetermined codebook and determining one or more second precoding matrices for other UEs to be multiplexed in a predetermined resource area with the first UE within a codebook subset associated with the first precoding matrix among codebook subsets of the predetermined codebook; and transmitting codebook subset information indicating the codebook subset associated with the first precoding matrix and precoding matrix information indicating a preferred pattern among precoding matrix patterns, each of the precoding matrix patterns defining a priority order between precoding matrices of the codebook subset associated with the first precoding matrix, for indicating the first and second precoding matrices.