PMSAI: A Novel Peer-to-Peer Multimedia Streaming Architecture over IMS

Deploying multimedia streaming over IP Multimedia Subsystem (IMS) can enable all kinds of user equipments to enjoy unified streaming service, without considering the differences of heterogeneous accessing methods. The combination of IMS and peer-to-peer (P2P) may help operators (especially telecommunication operators) to provide more scalable multimedia streaming. In this paper, we propose PMSAI, a novel P2P multimedia streaming architecture over IMS, in order to expand the capability of IMS multimedia streaming and reduce server side resource consumption, while restricting P2P traffic within local areas and trying best to keep standard IMS unchanged. To study how PMSAI performs, we also build a experimental system of live multimedia streaming. Carefully measurement study demonstrates the feasibility and effectiveness of PMSAI. To the best of our knowledge, PMSAI is the first P2P multimedia streaming architecture over IMS.