A P2P Network Framework for Interactive Streaming Media

To overcome the shortcomings of interactive streaming media in real-time transmission, control overhead, stability and scalability in general P2P network, we propose a hybrid P2P network framework called PPISM (P2P Interactive Streaming Media) for interactive streaming media. The framework adopts a hierarchical structure, which integrates CDN (Content Distribution Network), P2P network and the combine of tree-mesh structure. After building a mechanism of super-node selection and super-nodes tree construction, streaming media data are pushed to the super-nodes tree, which reduces the load of edge servers. Meanwhile, in the aspect of real-time streaming media transmission, the combination of push-pull is adopted. The edge server pushes streaming media data to the requesting node, and the requesting node pulls the missing streaming media data to the super-nodes tree, which improves the real-time transmission of data. The simulation shows that compared with ordinary P2P and simple CDN-P2P architecture, PPISM can significantly decrease the end-to-end delay, streaming media distortion and control overhead.