Patent ID: 9357419
Filing Date: 2016-05-31
CPC Classification: H04B,H04L,H04W

Claim Text:
1. A method for reporting Channel State Information (CSI) at a User Equipment (UE) in a wireless communication system, the method comprising: measuring downlink signals of a plurality of base stations; feeding back first CSI for a first base station in a unit of subband, wherein the first CSI includes identification information for indicating a corresponding subband; and feeding back second CSI for a second base station in units of a subband, wherein the subband corresponding to the second CSI is configured to be identical to the subband corresponding to the first CSI, and the second CSI excludes identification information for indicating a corresponding subband, wherein the second CSI includes phase correction information for adjusting a phase between the downlink signal of the first base station and the downlink signal of the second base station.