Patent ID: 9136921
Filing Date: 2015-09-15
Classification: H04B,H04L

Abstract:
1. A method for channel information feedback, applied to an 8 antennae system, comprising: a terminal acquiring channel information, wherein the channel information comprises: first type precoding matrix indicator (PMI1) information and rank indicator (RI) information; the terminal jointly encoding the PMI1 information and the RI information into a 5-bit Report Type or a 4-bit Report Type; and the terminal feeding back the 5-bit Report Type or the 4-bit Report Type on a physical uplink control channel; wherein if the 5-bit Report Type is used to indicate one item in an information set formed by combination of the RI information and the PMI1 information, the information set comprises: Mr pieces of code word index information when RI=r, wherein r=1, 2 . . . 8, and wherein the Mr pieces of code word index information is information of all or part of indexes in a PMI1 information set in a long term evolution (LTE) codebook corresponding to RI=r; or Mr pieces of code word index information when RI=r, wherein r=1, 2 . . . 4, and wherein the Mr pieces of code word index information is information of all or part of indexes in a PMI1 information set in an LTE codebook corresponding to RI=r; or Mr pieces of code word index information when RI=r, wherein r=1, 2, and wherein the Mr pieces of code word index information is information of all or part of indexes in a PMI1 information set in an LTE codebook corresponding to RI=r; or wherein if the 4-bit Report Type is used to indicate one item in an information set formed by combination of the RI information and the PMI1 information, the information set comprises: Mr pieces of code word index information when RI=r, wherein r=1, 2, and wherein the Mr pieces of code word index information is information of all or part of indexes in a PMI1 information set in an LTE codebook corresponding to RI=r.