Centralized peer-to-peer streaming with layered video

Faster computational power and higher network bandwidth facilitates Internet applications to improve the way we live, work and play. For video streaming applications, it is a challenge to provide the scalability while maintaining the central manageability and the robustness. In this paper, we propose the centralized peer-to-peer streaming protocol (P2PSP), which features the centralized management, guaranteed perceived quality of service (PQoS), while decentralized the traffic loads. To evaluate the protocol, a layered video coding technique based on 3D discrete cosine transform (DCT) is designed. This codec applies self-organizing tree map (SOTM) to generate cascaded vector quantization codebooks. We demonstrate the effectiveness of the centralized P2PSP by comparing the video streaming simulations under the proposed architecture and the client/server architecture.