A Solution for IPTV Services Using P2P

Abstract

Next Generation Network (NGN) based on IP Multimedia Subsystem (IMS) platform is an open architecture which provides multimedia services. IPTV is also considered as one of the most promising services for service providers. Unfortunately, from the service provider perspective, IPTV, given its complicated architecture and overwhelming bandwidth requirements, is not yet popular. In Internet environment, using Peer to Peer (P2P) overlay to deliver IPTV services has gained lots of attention. However, in order to use P2P technology to provide IPTV, there are many issues such as the effects of peer churn which join and leave the overlay unpredictable and QoS problems to be dealt with. Thus to tackle those matters, We propose an architecture for IPTV service using P2P overlay between NGN/IMS clients. In this architecture, We design a hybrid tree/mesh topology of the application layer multicast (AML) as a content distribution method. In this hybrid topology, stable peers play an important role as the parent peer while other peers will be the child peers. The main characteristics of the proposed approach are: (1) benefits from QoS mechanism of NGN, and (2) minimizing the effects of peer churn problems in P2P network.