Session transfer method and method for supporting session continuity

摘要

A method for supporting session continuity for a terminal in a server including generating a session continuity operator policy, under a state that a first terminal is performing a session with a second terminal through a first network, and the generated session continuity operator policy supports multimedia sessions for both voice data and non-voice data and includes operator policy parameters indicating whether only voice data, only non-voice data, or both voice and non-voice data is to be transferred to a second network; sending the generated session continuity operator policy to the first terminal; receiving a session invite message from the first terminal via a target network in response to the first terminal having received the generated session continuity operator policy; and sending a session re-invite message to the second terminal so as to achieve session continuity via said second network after receiving the session invite message from the first terminal.

主权项

1. A method for supporting session continuity for a terminal in a server, the method comprising:
sending, by a server, a session continuity operator policy to a first terminal which is engaged in an ongoing session with a second terminal, wherein the session continuity operator policy includes a parameter indicating a preferred network for a transfer of the ongoing session, and session continuity level information including one of a first level indicating that the first terminal starts a session transfer to the preferred network and a second level indicating that starting of the session transfer is performed based on a decision of the first terminal; receiving, by the server, a first session invite message from the first terminal via a target network within the preferred network, unless the session continuity level information of the session continuity operator policy is the second level and the first terminal decides not to start the session transfer; and sending, by the server, a second session invite message to the second terminal to achieve session continuity to the target network after receiving the first session invite message from the first terminal.