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热词
    • 3. 发明授权
    • Method, system and apparatus for providing a warning when a mobile terminal may lose service
    • 当移动终端可能失去服务时提供警告的方法,系统和装置
    • US06349206B1
    • 2002-02-19
    • US09223630
    • 1998-12-30
    • Martin ReicheltInayat SyedNauman Shakil
    • Martin ReicheltInayat SyedNauman Shakil
    • H04M1100
    • H04W4/02H04W12/08
    • A method, system, and apparatus enables a subscriber to be warned via the mobile terminal (MT) when the MT has moved into an invalid area during a call. The network monitors the location/position of the MT during a call. When the MT enters a region (e.g., a cell) that is invalid because it is located within an invalid area, the network sends a message to the MT. The message may be, for example, a novel cause code in a Direct Transfer Application Part (DTAP) message that triggers a warning action by the MT when the network does not have access to the transmission reaching the MT. The message may alternatively be an announcement or tone sent directly to the MT when the network does have direct access to the transmission reaching the MT. The network also begins a timer. If the MT is returned to a valid area before the is timer expires, the call may be continued (and a message so indicating may optionally be sent to the MT from the network). Otherwise, the network disconnects the call at the expiration of the timer.
    • 当MT在呼叫期间移动到无效区域时,方法,系统和装置使得用户可以经由移动终端(MT)被警告。 网络监视呼叫期间MT的位置/位置。 当MT进入由于它位于无效区域而无效的区域(例如,小区)时,网络向MT发送消息。 该消息可以是例如当直接传输应用部分(DTAP)消息中的新的原因代码时,当网络不能访问传输到达MT时触发MT的警告动作。 该消息可以替代地是当网络直接访问到达MT的传输时直接发送到MT的公告或音调。 网络也开始一个定时器。 如果MT在定时器到期之前返回到有效区域,则可以继续呼叫(并且可以选择性地从网络向MT发送消息)。 否则,网络在定时器到期时断开呼叫。