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    • 5. 发明授权
    • Method and system for private communication with efficient use of bus
type transmission path
    • 用于私人通信的方法和系统,有效利用总线类型的传输路径
    • US5799018A
    • 1998-08-25
    • US445180
    • 1995-05-19
    • Tomoyuki KanekiyoHaruhiko KojimaHiroyuki Nishi
    • Tomoyuki KanekiyoHaruhiko KojimaHiroyuki Nishi
    • H04J3/16H04L12/403H04L12/70H04Q11/04
    • H04L12/403H04J3/1694H04Q11/0478H04L2012/5675
    • A private communication system using bus type transmission path, in which a plurality of communication terminal devices for carrying out communications and a system main device for exchanging communications from the communication terminal devices are connected by upward and downward digital transmission paths for transmitting data in forms of upward and downward transmission frames formed by a plurality of cells in fixed length. The system main device determines an allocation of idle cells in each upward transmission frame to a communication from each communication terminal device according to a communication request made by each communication terminal device, and transmits a notification for the determined allocation to each communication terminal device by using an idle cell among the cells in each downward transmission frame, such that each communication terminal device recognizes allocated cells on the upward digital transmission path available for the communication from each communication terminal device according to the notification transmitted through the downward digital transmission path.
    • 使用总线类型传输路径的专用通信系统,其中用于执行通信的多个通信终端设备和用于从通信终端设备交换通信的系统主设备通过上下的数字传输路径连接,用于以 由固定长度的多个单元形成的上下传输帧。 系统主设备根据每个通信终端设备的通信请求,确定每个上行传输帧中的空闲信元到每个通信终端设备的通信的分配,并通过使用通信终端设备向每个通信终端设备发送所确定的分配通知 每个下行传输帧中的小区之间的空闲小区,使得每个通信终端设备根据通过向下数字传输路径发送的通知,从每个通信终端设备识别可用于通信的上行数字传输路径上的分配的小区。