User equipment, call continuity application server, and network handover method
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United States of America Patent
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Apr 10, 2012
Grant Date -
Jun 11, 2009
app pub date -
Feb 10, 2009
filing date -
Sep 8, 2006
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A network handover method applicable to network handover in ringing/ring back tone (RBT) or call hold is provided. According to this method, in ringing/RBT, one party performs a session negotiation with an Other End Point (OEP) via a call continuity application server, and then sends an off-hook signal to the OEP via the call continuity application server after the negotiation succeeds. Further, a call continuity application server and a user equipment (UE) are provided. According to the present disclosure, in ringing/RBT or call hold, even if the network coverage is not good, the UE may also be handed over to another network through call continuity, so as to effectively prevent the UE from dropping a call in ringing/RBT or call hold and thus improve the conversation quality of the user.
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