Delivering scalable video coding using P2P Small-World based push-pull mechanism

摘要

Peer-to-Peer (P2P) networks have proven to enable large-scale content distribution over the Internet thanks to peers organization in overlays. However, real-time content delivery such as live and video on demand (VoD) streaming applications requires significant consideration in term of peer organization to provide concurrent users with adequately satisfying viewing experiences. In this paper, we present an adaptive video streaming mechanism that constructs overlay networks based on Small-World (SW) of peers. Our approach combines the key characteristics of P2P push and pull mechanisms to improve the packet delivery ratio and the overall quality of service. Furthermore, we tackle peer heterogeneity using scalable video coding (SVC) that is considered more promising for real-time applications over heterogeneous networks. Our mechanism is evaluated and compared with existing approach. The obtained results show the effectiveness of the proposed overlay organization in term of lowering the packet loss ratio and the delay jitter. This proves the application of our mechanism to live and VoD delivery.