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User equipment, call continuity application server, and network handover method

  • US 8,155,084 B2
  • Filed: 02/10/2009
  • Issued: 04/10/2012
  • Est. Priority Date: 09/08/2006
  • Status: Expired due to Fees
First Claim
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1. A method for a user equipment (UE) to perform network handover, comprising:

  • sending, by the UE, a network handover request carrying session description information of the UE to a call continuity application server in a target network;

    performing, by the UE that initiates a handover, a session negotiation on call continuity handover in a call-hold state with an Other End Point (OEP) according to the session description information via the call continuity application server; and

    handing over a call corresponding to the network handover request to the target network after the session negotiation succeeds; and

    wherein the session description information includes call-hold information of the UE that initiates the network handover.

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