发明授权
- 专利标题： Power scaling for retransmissions in uplink MIMO hybrid ARQ
- 专利标题（中）： 上行链路MIMO混合ARQ中的重传功率缩放
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申请号： US13292659申请日： 2011-11-09
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公开(公告)号： US08891677B2公开(公告)日： 2014-11-18
- 发明人: Guosen Yue , Narayan Prasad , Meilong Jiang , Sampath Rangarajan
- 申请人： Guosen Yue , Narayan Prasad , Meilong Jiang , Sampath Rangarajan
- 申请人地址： US NJ Princeton
- 专利权人： NEC Laboratories America, Inc.
- 当前专利权人： NEC Laboratories America, Inc.
- 当前专利权人地址： US NJ Princeton
- 代理商 Joseph Kolodka
- 主分类号： H04L27/00
- IPC分类号： H04L27/00 ; H04L25/03 ; H04L5/00 ; H04W52/48 ; H04L1/18 ; H04L1/00
摘要：
A method includes obtaining a precoder for retransmission of one codeword responsive to known precoding matrix P of rank r and modulation and coding scheme MCS assignments used in an original transmission, and a desired retransmission rank r′; and scaling power in the retransmission responsive to at least two of 1) information parameters Index of UL precoder in previous transmission, 2) rank r of uplink UL precoder in previous transmission, 3) MCS assignments in previous retransmission (MCSi), 4) rank r′ for UL retransmission 5) number of retransmit antennas used for codeword to be retransmitted x in previous transmission, 6) number of retransmit antennas x′ used for retransmission, 7) precoder for UL retransmission, 8) UL precoders and channel information for previous transmission, and 8) latest channel measurements.
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