发明名称 |
RADIO COMMUNICATION SYSTEM, FEEDBACK METHOD, USER TERMINAL, AND RADIO BASE STATION APPARATUS |
摘要 |
The present invention is designed to feed back channel state information, from which adequate received quality can be calculated, upon CoMP transmission. A radio communication system is provided, which includes a plurality of radio base station apparatuses and a user terminal which is configured to be able to communicate with the plurality of radio base station apparatuses, and, in this radio communication system, a radio base station apparatus (eNB) has a transmission section configured to transmit a reference signal for channel state measurement to a user terminal (UE), and a receiving section configured to receive channel state information generated in the user terminal (UE) based on the reference signal, and the user terminal (UE) has a channel state information generating section configured to be able to generate a plurality of pieces of channel state information, including channel state information from which interference from a coordinated cell is cancelled, when the plurality of radio base station apparatuses coordinate and perform transmission, and a transmission section configured to transmit the plurality of pieces of channel state information to the radio base station apparatus. |
申请公布号 |
US2014233519(A1) |
申请公布日期 |
2014.08.21 |
申请号 |
US201214346800 |
申请日期 |
2012.10.01 |
申请人 |
NTT DOCOMO, INC. |
发明人 |
Nagata Satoshi;Abe Tetsushi;Kishiyama Yoshihisa |
分类号 |
H04B15/00;H04B7/06;H04B7/02 |
主分类号 |
H04B15/00 |
代理机构 |
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代理人 |
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主权项 |
1. A radio communication system comprising a plurality of radio base station apparatuses and a user terminal that is configured to be able to communicate with the plurality of radio base station apparatuses, wherein:
the radio base station apparatuses comprise:
a transmission section configured to transmit a reference signal for channel state measurement to the user terminal; anda receiving section configured to receive channel state information generated in the user terminal based on the reference signal; and the user terminal comprises:
a channel state information generating section configured to be able to generate a plurality of pieces of channel state information, including channel state information from which interference from a coordinated cell is cancelled, when the plurality of radio base station apparatuses coordinate and perform transmission; anda transmission section configured to transmit the plurality of pieces of channel state information to the radio base station apparatus. |
地址 |
Tokyo JP |