Analyzing Peer Selection Policies for BitTorrent Multimedia On-Demand Streaming Systems in Internet

摘要

The adaptation of the BitTorrent protocol to multimedia on-demand streaming systems essentially lies onthe modification of its two core algorithms, namely the piece and the peer selection policies, respectively.Much more attention has though been given to the piece selection policy. Within this context, this articleproposes three novel peer selection policies for the design of BitTorrent-like protocols targeted at that typeof systems: Select Balanced Neighbour Policy (SBNP), Select Regular Neighbour Policy (SRNP), andSelect Optimistic Neighbour Policy (SONP). These proposals are validated through a competitive analysisbased on simulations which encompass a variety of multimedia scenarios, defined in function of importantcharacterization parameters such as content type, content size, and client′s interactivity profile. Servicetime, number of clients served and efficiency retrieving coefficient are the performance metrics assessed inthe analysis. The final results mainly show that the novel proposals constitute scalable solutions that maybe considered for real project designs. Lastly, future work is included in the conclusion of this paper.