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    • 4. 发明授权
    • Method and apparatus for providing push-to-talk services in a cellular communication system
    • 用于在蜂窝通信系统中提供一键通服务的方法和装置
    • US07783315B2
    • 2010-08-24
    • US11273694
    • 2005-11-14
    • Prakash R. IyerMurali AravamudanAjit Rajasekharan
    • Prakash R. IyerMurali AravamudanAjit Rajasekharan
    • H04B7/00
    • H04W4/10H04W76/45
    • To reduce a delay between a time that a user of an originating mobile station (MS) requests to set up a Push-To-Talk (PTT) call and the time that the user may begin to speak, a communication system provides a ‘wake up list’ of other mobile stations (MSs) that may be awakened prior to the originating MS requesting to set up a PTT call. To further reduce the delay, the user may begin speaking prior to completion of the call setup. The speech is stored and is conveyed to a called MS when the call is setup. If the call does not get setup or a user of the called MS is not present, the stored speech may be conveyed to the called MS as a voice message. The stored speech, or new speech, may also be used as an announcement of a call instead of the typical “beep” or “chirp.”
    • 为了减少始发移动台(MS)的用户请求建立一键通(PTT)呼叫的时间与用户可能开始说话的时间之间的延迟,通信系统提供“唤醒 可以在发起MS请求建立PTT呼叫之前被唤醒的其他移动台(MS)的“up up”列表。 为了进一步减少延迟,用户可以在完成呼叫建立之前开始说话。 当呼叫建立时,语音被存储并被传送到被叫MS。 如果呼叫没有得到设置或被叫MS的用户不存在,则所存储的语音可以作为语音消息传送到被叫MS。 存储的语音或新的语音也可以用作通话,而不是典型的“嘟嘟声”或“啁啾声”。