Igor M. Moraes,  Otto Carlos M. B. Duarte. 

In this paper, we evaluate the use of partner selection mechanisms toincrease the availability of chunks of interest among peers in peer-to-peer videoon-demand systems. We present the lifetime-based partner selection mechanismand compare it with other similar mechanisms through simulation. We showthat the lifetime-based mechanism selects more efficient partners than the othermechanisms and does not require any additional control message due to users'interactivity. Thus, it provides a playback continuity higher than 99% and acache hit-ratio higher than 95% for the interactivity patterns analyzed. Thelifetime-based mechanism achieves this performance even requiring cache sizesup to 80% smaller than the other mechanisms.

http://www.lbd.dcc.ufmg.br/colecoes/sbrc/2010/0016.pdf

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