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Reports (Research Report) Year : 2012

Peer-assisted VoD Systems: an Efficient Modeling Framework


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, as well as in controlled Bit-Torrent like swarms. 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. At last, we provide important hints for the design of efficient peer-assisted VoD systems under server capacity constraints.
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Dates and versions

hal-00759377 , version 1 (17-12-2012)


  • HAL Id : hal-00759377 , version 1


Delia Ciullo, Valentina Martina, Michele Garetto, Emilio Leonardi, Giovanni Luca Torrisi. Peer-assisted VoD Systems: an Efficient Modeling Framework. [Research Report] RR-8184, INRIA. 2012. ⟨hal-00759377⟩
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