发明授权
- 专利标题： Method and apparatus for allowing communication units to utilize non-licensed title spectrum
- 专利标题（中）： 允许通信单元利用非许可标题频谱的方法和装置
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申请号： US10973530申请日： 2004-10-26
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公开(公告)号： US07239624B2公开(公告)日： 2007-07-03
- 发明人: Gregory J. Buchwald , Lawrence M. Ecklund , Richard S. Rachwalski , S. David Silk , Stephen L. Kuffner
- 申请人： Gregory J. Buchwald , Lawrence M. Ecklund , Richard S. Rachwalski , S. David Silk , Stephen L. Kuffner
- 申请人地址： US IL Schaumburg
- 专利权人： Motorola, Inc.
- 当前专利权人： Motorola, Inc.
- 当前专利权人地址： US IL Schaumburg
- 主分类号： H04Q7/20
- IPC分类号： H04Q7/20
摘要：
The presence of the non-television transmission within a channel is used to indicate that secondary non-licensed usage of the channel is permitted. Specifically, if secondary users incorporate the means to identify the unique modulation signature of the secondary user, decoding of a beacon signal may not be necessary. With the above in mind, a radio will be prevented from transmitting within a frequency band when no transmission within the licensed spectrum is currently taking place; the licensee is currently transmitting on the spectrum (e.g., television transmissions are taking place utilizing the spectrum, or the radio cannot sense the presence of a data channel (beacon).