Patent ID: 8830932
Filing Date: 2014-09-09
Classification: H04B,H04L,H04W

Abstract:
1. A method for acquiring channel information, comprising: for one subband, a User Equipment (UE) acquiring Rank Indicator (RI) of a current channel, wherein a rank (ν) of said current channel is indicated in the RI, and the ν is a positive integral number not greater than 8; the user equipment determining a total number of Precoding Matrix Indicator (PMI) required to be fed back to a base station according to the ν, and transmitting the PMI corresponding to the total number and the RI to the base station; and the base station acquiring channel information of said subband according to the PMI corresponding to the total number and the RI; wherein the PMI corresponding to the total number, when the total number is 1, is used for obtaining one Precoding Matrix or the PMIs corresponding to the total number, when the total number is greater than 1, are used for jointly obtaining one Precoding Matrix, the total number is an integral.