发明授权
- 专利标题： Single channel autonomous digitally trunked RF communications system
- 专利标题（中）： 单通道自主数字中继射频通信系统
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申请号： US927860申请日： 1992-08-11
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公开(公告)号： US5408680A公开(公告)日： 1995-04-18
- 发明人: David L. Hattey , Marc A. Dissosway , Samuel Maedjaja , Houston H. Hughes, III , Jeffrey S. Childress
- 申请人： David L. Hattey , Marc A. Dissosway , Samuel Maedjaja , Houston H. Hughes, III , Jeffrey S. Childress
- 申请人地址： NC Research Triangle Park
- 专利权人： Ericsson GE Mobile Communications Inc.
- 当前专利权人： Ericsson GE Mobile Communications Inc.
- 当前专利权人地址： NC Research Triangle Park
- 主分类号： H04B7/26
- IPC分类号： H04B7/26 ; H04W4/12 ; H04W4/22 ; H04W28/04 ; H04W48/08 ; H04W72/04 ; H04W88/04 ; H04W88/06 ; H04B7/14
摘要：
A single channel autonomous trunking ("SCAT") RF repeater transmits and receives on a single duplex RF channel. The repeater operates alternately in a control channel mode and in an assigned channel mode. Digital control channel signalling results in temporary assignment of the single channel for assigned channel signalling (e.g., mobile generated messages). A holdover time period following reversion of the channel to control channel signalling minimizes collisions and permits priority to be given to emergency communications. Low speed data subaudible digital signalling may be used to provide late entry capabilities.
公开/授权文献
- US4730562A Vehicle transporting railroad car with brace bays 公开/授权日：1988-03-15
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