LOCAL AREA STREAMING MANAGEMENT METHOD

摘要

There are provided a communication method applied to an IMS through which a peer to peer data streaming is performed in an established session between a first user equipment (Home1) which provides data streaming but can afford to manage a single data stream and a single session, and a second user equipment (Home2) which demands and receives the data streaming. This method comprises the steps of: registering Home1's presence to a presence server (104) in the IMS; registering Home2's presence to the presence server; sending a RTSP command to start the video data streaming from Home2 to the Home1, performing the data streaming from Home1 to Home2 via a multicast router (101) in the IMS in response to the RTSP command. Then, when a third user equipment (MOBILE1) enters the established session between Home1 and Home2 to share the data streaming from Home1 with the Home2, the method further comprises the steps of: forking the established session at a CSCF (103) so that MOBILE1 can share the established session; and branching out the video data stream at the multicast router to MOBILE1.