| 摘要 |
PROBLEM TO BE SOLVED: To solve the problems in which: it is difficult to distinguish a transfer request and a duplication request for a media component; and it is difficult to determine whether a certain device can perform duplication and how often it can duplicate a session.SOLUTION: An SCC AS (Service Centralized and Continuity Application Server) establishes collaboration session control with a first WTRU associated with first subscription and receiving media flow from a remote party, receives a collaboration session request to duplicate the media flow on the second WTRU from the second WTRU, approves the request, allocates a media resource for the media flow at an MRF, sends the second WTRU a response for the second WTRU to receive the requested and duplicated media flow from the MRF, updates an access leg on the first WTRU in order for the first WTRU to receive the media flow from the MRF, and updates a remote leg in order to communicate the duplicated media flow to the MRF. |
