发明授权
- 专利标题： Communication method, communication apparatus, and communication system
- 专利标题（中）： 通信方式，通信装置和通信系统
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申请号： US12076730申请日： 2008-03-21
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公开(公告)号： US08379545B2公开(公告)日： 2013-02-19
- 发明人: Yoriko Utsunomiya , Masahiro Takagi
- 申请人： Yoriko Utsunomiya , Masahiro Takagi
- 申请人地址： JP Tokyo
- 专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人地址： JP Tokyo
- 代理机构： Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.
- 优先权： JP2004-004846 20040109
- 主分类号： H04L12/28
- IPC分类号： H04L12/28
摘要：
A method for exchanging channel information between a transmitter and a receiver each including antennas. A request frame including a first preamble, second preamble, and channel information feedback request is transmitted to the receiver, wherein the first preamble is transmitted from one of the antennas of the transmitter, the second preamble is transmitted from each of the antennas, and the channel information feedback request is transmitted from the one of the antennas. The request frame is received at the receiver, and the channel information feedback request is detected by a decoding based on the first preamble. Channel information is estimated using the second preamble, and a notification frame including the estimated information is constructed and transmitted to the transmitter.
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