Patent ID: 9456439
Filing Date: 2016-09-27
CPC Classification: H04B,H04L,H04W

Claim Text:
1. A method for reporting Channel State Information (CSI) in a wireless access system which supports carrier aggregation, the method performed by a user equipment (UE) and comprising: measuring a first type CSI for a first component carrier (CC) of two or more downlink (DL) CCs; measuring a second type CSI for a second CC of the two or more downlink (DL) CCs; and reporting the first type CSI only, when a collision of a report of the first type CSI with a report of the second CSI type occurs in a same subframe, wherein the first type CSI includes (1) a Rank Indicator (RI) and a first Precoding Matrix Indicator (PMI) or (2) only the RI, and wherein the second type CSI includes (1) a Wideband Channel Quality Indicator (WB-CQI) and a second PMI, (2) the WB-CQI and the first PMI, or (3) only the WB-CQI.