Method and equipment for reducing interruption time for switching voice over internet phone (VoIP) calling
A technology in the time and circuit switching domains, applied in electrical components, wireless communication, connection management, etc., can solve problems such as service quality discounts, uncertain flow interruption time, and uncertain interruption time of voice calls, so as to improve service quality and high The effect of compatibility
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[0069] As mentioned above, when switching a VoIP voice call from the PS domain to the CS domain, it includes the session transfer process at the IMS layer, the CS handover process to the target cell at layer 2 (executed between the local UE and the access network) switching) two parts, so that the solution to SRVCC in the prior art cannot actually guarantee the continuity of the voice call, but there is an uncertain interruption time. Among them, the flow interruption time introduced by the latter (that is, the CS switching process) is inevitable and usually relatively deterministic.
[0070] Therefore, the basic idea of the present invention is to reduce the total interruption time in the above handover process of VoIP by eliminating, or at least reducing, the interruption time introduced by the session transfer process at the IMS layer.
[0071] Figure 4 An exemplary structure of an optimized SRVCC according to an embodiment of the present invention is shown. Among them...
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