发明申请
- 专利标题： Communication System and Its Device
- 专利标题（中）： 通信系统及其设备
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申请号： US12146579申请日： 2008-06-26
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公开(公告)号： US20090067850A1公开(公告)日： 2009-03-12
- 发明人: Masahiko MIZUTANI , Yoshihiro Ashi
- 申请人： Masahiko MIZUTANI , Yoshihiro Ashi
- 优先权： JP2007-231379 20070906
- 主分类号： H04B10/00
- IPC分类号： H04B10/00
摘要：
A transmission device uses transmission delay time of reciprocation with the terminal and time information of the transmission device to create a correction value of time information of the terminal and transmits it to the terminal. The terminal includes expected arrival time information based on the time information of the terminal and the correction value received from the transmission device in a frame transmitted to the transmission device. The transmission device compares reception time of the frame with the expected arrival time information in the frame. If they match, the time information of the terminal synchronizes with the time information of the transmission device. If they do not match, the transmission device transmits a new correction value to the terminal. The terminal transmits a frame including expected arrival time information using the new correction value to the transmission device.
信息查询
