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CIRCUIT-SWITCHED AND MULTIMEDIA SUBSYSTEM VOICE CONTINUITY

  • US 20090323656A1
  • Filed: 10/04/2007
  • Published: 12/31/2009
  • Est. Priority Date: 10/04/2006
  • Status: Abandoned Application
First Claim
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1. A method facilitating domain transfers for a user element simultaneously engaged in a plurality of sessions comprising:

  • providing a plurality of session signaling paths for a corresponding plurality of sessions, each of the plurality of session signaling paths comprising a first access signaling leg and a remote access signaling leg for a corresponding one of the plurality of sessions, wherein the first access signaling leg for each of the plurality of session signaling paths is anchored at a control function residing in a multimedia subsystem and extends toward a first user element via a transferring-out domain; and

    for each of the plurality of sessions;

    providing a second access signaling leg that is anchored at the control function and extends toward the first user element via a transferring-in domain;

    replacing the first access signaling leg with the second access signaling leg; and

    exchanging session signaling between the second access signaling leg and the remote signaling leg to provide an updated session signaling path to facilitate session signaling for the first user element while the first user element is served by the transferring-in domain.

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