METHOD AND APPARATUS FOR EFFICIENT FEEDBACK IN A WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS MULTIPLE ANTENNAS
申请公布号:WO2011129585(A2)
申请号:WO2011KR02575
申请日期:2011.04.12
申请公布日期:2011.10.20
发明人:KO, HYUN SOO;CHUNG, JAE HOON;LEE, MOON IL
分类号:H04B7/04;H04J11/00
主分类号:H04B7/04
摘要:The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for efficient feedback in a wireless communication system that supports multiple antennas. A method for transmitting, via an uplink, channel state information for downlink transmission in a wireless communication system according to one embodiment of the present invention, comprises the following steps: receiving a downlink signal via a downlink channel; generating an RI for the downlink channel, selecting a first PMI and a second PMI on the basis of the rank indicated by the generated RI, and calculating a CQI on the basis of pre-coding information determined by the combination of the selected first and second PMIs; and transmitting the RI, the first PMI, the second PMI, and/or the CQI via an uplink channel, wherein said first PMI and second PMI can be transmitted on different uplink subframes if the uplink channel is a PUCCH.