Scalable and Reliable Live Streaming Service through Coordinating CDN and P2P

In order to fully utilize CDN network edge nearby transmission capability and P2P scalable end-to-end transmission capability, while overcoming CDN´s limited service capacity and P2P´s dynamics, we need to combine the CDN and P2P technologies together. In recent years, some researchers have begun to focus on CDN-P2P-hybrid architecture and ISP-friendly P2P content delivery technology. In this paper, we firstly make an analysis on main problems of CDN-P2P-hybrid technology, and we compare some current existing solutions. And then we propose a novel scalable and reliable live streaming service scheme through coordinating CDN and P2P. In this scheme, different overlay hybrid methods, we design a smoother CDN and P2P overlay hybrid approach. After that we design a new peer node buffer structure for consuming media block from both CDN and P2P sources. And then we propose a novel algorithm for identifying and serving super node. The simulation experiment results show that our CDN-P2P-hybrid based live streaming scheme has better performance and reliability than pure P2P. Finally, we make a conclusion and analyze future research directions.