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1. 发明公开

EP0205055A3 Channel selection in a multichannel access radio communication system without occurrence of interference 失效
标题翻译：多通道无线电通信系统中的通道选择没有干扰的发生
公开(公告)号：EP0205055A3
公开(公告)日：1988-12-14
申请号：EP86107383
申请日：1986-05-30
申请人： NEC CORPORATION
发明人： Yoshihara, Shigeo c/o NEC Corp. , Miyashita, Hideo NEC Mobile Radio Service, Ltd.
IPC分类号： H03J05/02 , H04Q07/02
CPC分类号： H04M1/733 , H03J5/0281 , H04W72/02
摘要： In a channel selecting device which is for use in a station of a multichannel access radio communication system comprising other stations, a control channel, and a predetermined number of speech channels and which includes a channel selector (11, 12, and 14) for selecting one of the speech channels as a selected channel on starting communication with a specific station of the system, a channel detecting arrangement (11,12 and 14) is coupled to the control channel to detect channel codes of busy channels which are rendered busy among the speech channels by at least two of the other stations. The channel detecting arrangement is operable while the first-mentioned station is in an idle state. A memory unit (30) is coupled to the channel detecting arrangement and stores the channel codes of the busy channels. The channel selector is coupled to the memory unit to select the selected channel from idle channels which are other than the busy channels. Preferably, an erasing arrangement (11,12, and 14) erases each of the channel codes from the memory unit upon` lapse of a predetermined time interval after storage of that channel code in the memory unit. The erasing arrangement may erase all channel codes from the memory unit when a manually operable switch (23) is operated after all channel codes are memorized in the memory unit.
摘要翻译：在用于包括该站和多个其他站，控制信道和预定数量的语音信道的多信道接入无线电通信系统的站中的信道选择设备中，并且包括信道选择器（11,12 和14），用于在开始与系统的特定站的通信之间选择语音信道中的一个作为所选择的信道，信道检测装置（11,12和14）耦合到控制信道以检测繁忙的信道码由至少两个其他站在语音信道中变得忙的频道。信道检测装置在第一个提到的站处于空闲状态时可操作。存储单元（30）耦合到信道检测装置，并存储繁忙信道的信道码。信道选择器被耦合到存储器单元，以从除忙信道之外的空闲信道中选择所选择的信道。优选地，擦除布置（11,12和14）在存储器中存储该通道代码之后经过预定时间间隔时，从存储器单元中擦除每个通道代码。当在所有信道码被存储在存储器单元中之后操作手动操作的开关（23）时，擦除装置可以从存储器单元擦除所有信道码。

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