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1.发明授权公开(公告)号：US09973248B2
公开(公告)日：2018-05-15
申请号：US14764086
申请日：2014-01-29
发明人： Younsun Kim , Sooyong Choi , Taehyoung Kim , Kyungsik Min , Jungkyun Park , Juho Lee , Hyojin Lee , Minchae Jung , Hyoungju Ji
IPC分类号： H04B7/04 , H04B7/06 , H04B7/0413 , H04B7/0417
CPC分类号： H04B7/0478 , H04B7/0413 , H04B7/0417 , H04B7/0486 , H04B7/0626 , H04B7/063 , H04B7/0632
摘要： A PSCG feedback-based multi-stream multiuser CQI estimation method and apparatus is provided for estimating multi-stream MU-CQI efficiently based on per-stream channel gain feedback. A feedback information transmission method of a terminal in a wireless communication system according to the present disclosure includes estimating a downlink channel based on a channel state information reference signal transmitted by a base station, determining a number of streams based on the estimated downlink channel, generating the feedback information corresponding to the number of streams, and transmitting the feedback information to the base station.
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2.发明授权公开(公告)号：US09686005B2
公开(公告)日：2017-06-20
申请号：US14765192
申请日：2014-01-29
发明人： Younsun Kim , Sooyong Choi , Taehyoung Kim , Kyungsik Min , Jungkyun Park , Juho Lee , Hyojin Lee , Minchae Jung , Hyoungju Ji
IPC分类号： H04B7/06 , H04B7/0413 , H04B7/0452 , H04B7/0456 , H04L1/06 , H04L1/00 , H04W88/08
CPC分类号： H04B7/0632 , H04B7/0413 , H04B7/0452 , H04B7/0456 , H04B7/0617 , H04B7/0639 , H04B7/0641 , H04L1/0026 , H04L1/0029 , H04L1/0072 , H04L1/0078 , H04L1/06 , H04W88/08
摘要： Disclosed are a method and an apparatus for feeding back channel estimation in a MIMO system. A terminal receives a reference signal for estimating a channel from a base station; estimates the channel based on the reference signal; generates channel estimation information according to the channel estimation result and generates error information indicating an error of the channel estimation; and transmits feedback information including the channel estimation information and the error information to the base station.
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