| 摘要 |
<p>A method for switching the session control path of IP multimedia core network subsystem centralized services is provided. When the condition for switching the session control path is satisfied during the ICS session based on the first session control path, the following steps are performed: one party of the ICS UE and ICCF corresponding to the ICS session transmits the request of switching the session control path to the other party; the receiving party identifies the ICS session corresponding to the request after receiving the request, and transmits a response of the session control path switching acknowledgement to the transmitting party; the ICCF and ICS UE set the session control path corresponding to the identified ICS session as the second session control path and transfer the subsequent session control information associated with the ICS session via the second session control path; the first or second session control path is one of the PS session control path and the CS session control path; the first and second session control paths are of different kinds.</p> |
