A stochastic fluid model for on-demand peer-to-peer streaming  services

Shuichiro  Senda; Hiroyuki Masuyama; Shoji Kasahara

doi:10.3934/naco.2011.1.611

Article Contents

2011, Volume 1, Issue 4: 611-626. Doi: 10.3934/naco.2011.1.611

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A stochastic fluid model for on-demand peer-to-peer streaming services

1.
Graduate School of Informatics, Kyoto University, Yoshida Honmachi, Sakyo-ku, Kyoto 606-8501
2.
Graduate School of Informatics, Kyoto University, Yoshida-Honmachi, Sakyo-ku, Kyoto 606-8501

Received: April 30, 2011

Revised: July 31, 2011

Published: October 2011

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Abstract

On-demand video streaming services have become popular in recent years. In current streaming services, however, the growth of user population leads to the lack of the upload rate of the video server. This mainly causes starvation in the playout buffer at a client, resulting in the degradation of user-level quality of service (QoS). In this paper, we consider an on-demand streaming service based on a peer-to-peer (P2P) technology. Focusing on the stochastic behavior of streaming data contents in the playout buffer at a client peer, we consider an analytical stochastic fluid model, which takes into account the heterogeneity among peer nodes and the peer churn. We derive the starvation probability that the playout buffer is empty. Numerical examples show that the starvation probability increases when the population of peer nodes grows. It is also shown that even when the population of peer nodes is extremely large, a small increase in the upload rate at ordinary-peer nodes significantly improves the QoS of P2P streaming services.

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Mathematics Subject Classification: Primary: 68M20; Secondary: 60K25, 68M20.

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