发明公开
- 专利标题： METHOD AND APPARATUS FOR EFFICIENT FEEDBACK IN A WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS MULTIPLE ANTENNAS
- 专利标题（中）： 方法和设备高效反馈，具有多个天线的无线通信系统
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申请号： EP11769051.1申请日： 2011-04-12
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公开(公告)号： EP2560298A2公开(公告)日： 2013-02-20
- 发明人: KO, Hyun Soo , CHUNG, Jae Hoon , LEE, Moon Il
- 申请人： LG Electronics Inc.
- 申请人地址： 20 Yeouido-dong Yeongdeungpo-ku Seoul 150-721 KR
- 专利权人： LG Electronics Inc.
- 当前专利权人： LG Electronics Inc.
- 当前专利权人地址： 20 Yeouido-dong Yeongdeungpo-ku Seoul 150-721 KR
- 代理机构： Urner, Peter
- 优先权： US334948P 20100514; KR20110033788 20110412; US413951P 20101115; US372468P 20100811; US323345P 20100412
- 国际公布： WO2011129585 20111020
- 主分类号： H04B7/04
- IPC分类号： H04B7/04 ; H04J11/00
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 precoding 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.
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