Patent ID: 9673951
Date: 2017-06-06
CPC Classifications: H04L

Claim:
1. A method for reporting multiple Channel Quality Indicator (CQI) information in a wireless access system, the method performed by a user equipment (UE) and comprising: receiving first reference signals which are cell specific reference signals transmitted to all UEs in a cell; acquiring average CQI information using the first reference signals during a prescribed subframe interval; receiving second reference signals which are UE-specific reference signals transmitted only to the UE; acquiring instantaneous CQI information using the second reference signals in subframes; reporting the average CQI information; and reporting the instantaneous CQI information, wherein a narrow beamforming is applied to the second reference signals and the narrow beamforming is not applied to the first reference signals, and wherein the average CQI information is acquired by averaging CQI values measured during the prescribed subframe interval and the instantaneous CQI information is a CQI value measured in each of the subframes.