Segment Relevance Based Peer Self-organization Strategy in P2P VoD
Peers in a video-on-demand system can choose any vedio at any time do interactive operations,such as play forward or backward.The interactive action may induce the play back delay which can influence users′ viewing experience,in order to ensure the playback continuity,it is essential for peers who do interactive operations to hit the destination segment as fast as possible.In P2P VoD,an efficient peer organization strategy is necessary for peers to fast locate the destination segment.Based on the character that the segments of on-demand streaming have some relevance with each other,this paper proposes a self-organization strategy for peers,which in stead of digging the specific relevancy of different segments makes peers of similar interest organize together to realize fast locate the destination segment.The optimization problem about how to optimize peer′s neighborlist is induced by the proposed strategy,an approximate optimization algorithm is presented to solve the problem.The simulation results show that the given strategy can effectively reduce the seeking delay and enhance the scalability of the system.