We analyze a peer-assisted Video-on-Demand system in which users contribute their upload bandwidth to the redistribution of a video that they are downloading or that they have cached locally. Our target is to characterize the additional bandwidth that servers must supply to immediately satisfy all requests to watch a given video. We develop an approximate fluid model to compute the required server bandwidth in the sequential delivery case. Our approach is able to capture several stochastic effects related to peer churn, upload bandwidth heterogeneity, non-stationary traffic conditions, which have not been documented or analyzed before. We provide an analytical methodology to design efficient peer-assisted VoD systems and optimal resource allocation strategies.

Performance analysis of non-stationary peer-assisted VoD systems

GARETTO, MICHELE;
2012-01-01

Abstract

We analyze a peer-assisted Video-on-Demand system in which users contribute their upload bandwidth to the redistribution of a video that they are downloading or that they have cached locally. Our target is to characterize the additional bandwidth that servers must supply to immediately satisfy all requests to watch a given video. We develop an approximate fluid model to compute the required server bandwidth in the sequential delivery case. Our approach is able to capture several stochastic effects related to peer churn, upload bandwidth heterogeneity, non-stationary traffic conditions, which have not been documented or analyzed before. We provide an analytical methodology to design efficient peer-assisted VoD systems and optimal resource allocation strategies.
2012
IEEE INFOCOM 2012
Orlando, FL
March 25-30, 2012
INFOCOM, 2012 Proceedings IEEE
IEEE Computer Society
3001
3005
9781467307734
D. Ciullo; V. Martina; M. Garetto; E. Leonardi; G.L. Torrisi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/130883
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