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    Digital radio
    1.
    发明公开
    Digital radio 有权
    数字电影

    公开(公告)号：EP1065808A2

    公开(公告)日：2001-01-03

    申请号：EP00110611.1

    申请日：2000-05-18

    申请人： MOTOROLA LTD

    发明人： Gibbs, Jonathan Alastair ,  Lucas, Richard

    IPC分类号： H04B7/26

    CPC分类号： H04L5/1492 ,  H04B7/2656

    摘要： The invention concerns a digital radio (2) for pseudo-duplex radio communication, and a method of transmission time mediation for pseudo-duplex radio communication.
    A digital radio (2) is in time division duplex communication with a second digital radio (4) over a single radio channel. Control of the radio channel may reside with either radio. However, authority for a radio to change the frame format in order to increase the proportion of time for which it transmits always resides entirely with the radio currently transmitting the least per frame. This is also the radio which transmits first in each frame. This arrangement lows rapid response to a need for a radio to move from listening to speaking mode, thereby reducing speech clipping.
    When the digital radio (2) and the second digital radio (4) are transmitting for equal proportions of the frame, authority to change the frame format passes to the radio that is transmitting at that instant.
    The apparatus and method of the invention provide a rapid switching of transmission mode, with minimal speech clipping when a user of the radio (2) starts to speak.

    摘要翻译： 本发明涉及一种用于伪双工无线电通信的数字无线电（2）以及用于伪双工无线电通信的传输时间中介的方法。 数字无线电（2）与单个无线电信道上的第二数字无线电（4）进行时分双工通信。 无线电信道的控制可以驻留在无线电中。 然而，无线电改变帧格式的权限是为了增加其传输的时间的比例总是完全依赖于当前每帧发送最少的无线电。 这也是在每个帧中首先传输的无线电。 这种安排降低了对无线电从听音模式移动的需要的快速响应，从而减少语音限幅。 当数字无线电（2）和第二数字无线电（4）正在以相等比例的帧发送时，改变帧格式的权限将传递到正在发送的无线电。 本发明的装置和方法提供了传输模式的快速切换，当无线电设备（2）的用户开始发言时，语音限幅最小化。

    Digital radio
    2.
    发明公开
    Digital radio 有权
    数字广播

    公开(公告)号：EP1065808A3

    公开(公告)日：2003-10-01

    申请号：EP00110611.1

    申请日：2000-05-18

    申请人： MOTOROLA LTD

    发明人： Gibbs, Jonathan Alastair ,  Lucas, Richard

    IPC分类号： H04B7/26 ,  H04L5/14

    CPC分类号： H04L5/1492 ,  H04B7/2656

    摘要： The invention concerns a digital radio (2) for pseudo-duplex radio communication, and a method of transmission time mediation for pseudo-duplex radio communication. A digital radio (2) is in time division duplex communication with a second digital radio (4) over a single radio channel. Control of the radio channel may reside with either radio. However, authority for a radio to change the frame format in order to increase the proportion of time for which it transmits always resides entirely with the radio currently transmitting the least per frame. This is also the radio which transmits first in each frame. This arrangement lows rapid response to a need for a radio to move from listening to speaking mode, thereby reducing speech clipping. When the digital radio (2) and the second digital radio (4) are transmitting for equal proportions of the frame, authority to change the frame format passes to the radio that is transmitting at that instant. The apparatus and method of the invention provide a rapid switching of transmission mode, with minimal speech clipping when a user of the radio (2) starts to speak.