发明申请
US20130176979A1 RADIO COMMUNICATION CONTROL METHOD, RADIO COMMUNICATION SYSTEM, RADIO BASE STATION, AND MOBILE TERMINAL
审中-公开
无线电通信控制方法，无线电通信系统，无线基站和移动终端
- 专利标题： RADIO COMMUNICATION CONTROL METHOD, RADIO COMMUNICATION SYSTEM, RADIO BASE STATION, AND MOBILE TERMINAL
- 专利标题（中）： 无线电通信控制方法，无线电通信系统，无线基站和移动终端
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申请号： US13822087申请日： 2011-09-01
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公开(公告)号： US20130176979A1公开(公告)日： 2013-07-11
- 发明人: Yusuke Ohwatari , Nobuhiko Miki , Tetsushi Abe , Yukihiko Okumura
- 申请人： Yusuke Ohwatari , Nobuhiko Miki , Tetsushi Abe , Yukihiko Okumura
- 申请人地址： JP Tokyo
- 专利权人： NTT DOCOMO INC.
- 当前专利权人： NTT DOCOMO INC.
- 当前专利权人地址： JP Tokyo
- 优先权： JP2010-204535 20100913
- 国际申请： PCT/JP2011/069958 WO 20110901
- 主分类号： H04W72/04
- IPC分类号： H04W72/04
摘要：
In each Mobile terminal, channel impulse characteristics from radio base stations to the mobile terminal is calculated. In a radio communication system, under the assumption that each of the mobile terminals performs optimum receiving beamforming in order to receive a data signal from a radio base station that actually sends the data signal to the mobile terminal, optimum receiving beamforming characteristics are estimated for each mobile terminal. Each of radio base stations that share optimum receiving beamforming characteristics calculates precoding characteristics for each mobile terminal according to the optimum receiving beamforming characteristics such that main beams are directed to mobile terminals to which the radio base station sends data signals and null beams are directed to mobile terminals to which the radio base station does not send data signals.
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