公开(公告)号：US5617412A

公开(公告)日：1997-04-01

申请号：US420604

申请日：1995-04-12

申请人： Marc Delprat ,  Vianney Andrieu ,  Frederic Gourgue ,  Gladys Gaydu ,  Charles Nouchi

发明人： Marc Delprat ,  Vianney Andrieu ,  Frederic Gourgue ,  Gladys Gaydu ,  Charles Nouchi

IPC分类号： H04B7/26 ,  H04B7/208

CPC分类号： H04B7/2615

摘要： In a digital half-duplex frequency division multiple access radio system a mobile station is either sending or receiving. For each call between a mobile station and a base station, a first frequency is allocated for the up link direction (from the mobile station to the base station) and a second frequency is allocated for the down link direction (from the base station to the mobile station). The signals exchanged by the stations are organized in frames of predetermined fixed duration grouped into multiframes comprising a predetermined number of frames including at least one control frame. At least some of the control frames are listening frames during which the sending mobile station interrupts sending, switches to receive mode and (if appropriate) reverts to send mode.

摘要翻译： 在数字半双工频分多址无线电系统中，移动台正在发送或接收。 对于移动站和基站之间的每个呼叫，为上行链路方向（从移动站到基站）分配第一频率，并且为下行链路方向（从基站到 移动台）。 由站交换的信号被组织成预定的固定持续时间的帧，分组成多帧，包括包括至少一个控制帧的预定数量的帧。 至少一些控制帧是发送移动站中断发送，切换到接收模式和（如果适用））恢复发送模式的监听帧。