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Home  >  Volume 46 (May, 2018)

17. ANALYSIS OF MIXED STRATEGIES FOR P2P-TV NETWORKS WITH BUFFERING MECHANISM by Adamu Aminu and Gaidamaka Y.V. Volume 46 (May, 2018 Issue), pp127 –138
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ANALYSIS OF MIXED STRATEGIES FOR P2P-TV NETWORKS WITH BUFFERING MECHANISM

Adamu Aminu and Gaidamaka Y.V.

Umaru Musa Yar’adua University, Katsina, Nigeria, Mathematics and Computer Science Department.

Applied Probability and Informatics Department, RUDN University, Moscow, Russia.

Abstract

In this paper a problem of finding optimal buffer filling strategy in form of mixed strategy was considered for P2P-TV networks. In such networks, the popularly used strategies are the Rarest First (RF) and Greedy (Gr) strategies, however, studies have shown that RF strategy outperforms Gr strategy in terms of playback continuity and Gr strategy outperforms RF strategy in terms of startup delay, hence there is a need to find an optimal buffer filling strategy inform of mixed strategy with which viewers will experience better playback continuity with short startup delay. The idea of the mixed strategy is to divide the buffer with total of M buffer positions into two parts via demarcation point x and apply one strategy in one part of the buffer and then other strategy in the other part of the buffer. For M = 40 buffer positions, an optimal demarcation point x* was found for each of the proposed mixed strategies. The results of the analysis have shown that mixed strategy    (RF is firstly applied for  , then Gr for  ) is the optimal strategy, with high probability of playback continuity and very low startup delay.

Keywords: Rarest First, Greedy, Strategy, Playback continuity, P2PTV networks

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