Peer-to-Peer Video-on-Demand Service in NuWeb

Traditional client/server architecture has difficulty in coping with the significant growth of user demands due to the continuing growth of video quality and ease of producing video content. Consequently, peer-to-peer (P2P) architecture has become the most feasible solution for providing video content. In order to provide high quality video, piece scheduling, peer selection, failure recovery and a robust streaming architecture are crucial to P2P video streaming systems. On the other hand, user privacy is a concern in the age of Web2.0. Most Internet users have to share their information through well-known large-scale commercial Web sites. These Web sites often have capacity restriction for users, and constraints on users´ copyright. NuWeb was proposed to ensure user´s privacy by providing individual space to each user in the cyber-world. Based on the infrastructure of NuWeb, this study presents a proxy-assisted P2P VOD architecture. Regional proxies of NUWeb can deliver and autonomously share videos for every user in the P2P system. Furthermore, Gray Relation Analysis based (GRA-based) peer selection and deadline-based piece scheduling are also proposed to offer reliable video transmission. The simulation experiments demonstrate that our approach can provide low delay, high resilience and high streaming quality to users.