Gwendal SIMON

Gwendal SIMON

Maître de Conférences, HDR
Dépt. Systèmes Réseaux, Cybersécurité et Droit du numérique

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Peer-assisted time-shifted streaming systems: design and promises


LIU Yaning1, SIMON Gwendal1

Type de document

Communication dans une conférence avec acte


ICC2011 : IEEE International Conference on Communications, IEEE, 05-09 june 2011, Kyoto, Japan, 2011




Time-shifted streaming (or catch-up TV) allows viewers to watch their TV programs within an expanded time window. In this paper, we emphasize the challenging charac- teristics of time-shifted TV systems that prevent known delivery systems to be used. We model time-shifted TV as multiple-interval graph, then we present a Peer-Assisted Catch-Up Streaming system, namely PACUS, where a set of end users’ computers assists the server for the content delivery. We show in particular how the PACUS tracker server can be efficiently implemented for catch-up TV. We demonstrate the benefits of PACUS by simulations. We especially highlight that PACUS reduces the traffic at the server side with the advantages of lightweight and self-adaptive unstructured peer-to-peer systems.


1 : INFO(TB) - Dépt. Informatique (Institut Mines-Télécom-Télécom Bretagne-UEB)

Mots clés

Streams multimedia, Peer-to-peer



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