This report is about content sharing protocols for VoD (Video on Demand) services with peer-to-peer delivery architectures. It discusses features of mesh-based and tree-based content distribution approaches. It shows how the mesh-based approach is more robust to dynamic changes in the peers population and allows better bandwidth utilization. It also includes a review of BitTorrent, which is the most popular mesh-based protocol for pee-to-peer applications. Although BitTorrent was designed for applications that do not have time constraints, multiple studies have proved that few changes to its strategies for peers and content selection can make it suitable for services with time constraints such as VoD services. In this report, the BitTorrent extensions for VoD services are reviewed. Features of the open source BitTyrant client, which is based on Azareus, are also investigated. The study of this report is to design a VoD delivery platform for the “Dynamic TV" research project supported by Telecom.
BitTorrent and enhancements for VoD services
GRECO POLITO, SILVANA
2009-01-01
Abstract
This report is about content sharing protocols for VoD (Video on Demand) services with peer-to-peer delivery architectures. It discusses features of mesh-based and tree-based content distribution approaches. It shows how the mesh-based approach is more robust to dynamic changes in the peers population and allows better bandwidth utilization. It also includes a review of BitTorrent, which is the most popular mesh-based protocol for pee-to-peer applications. Although BitTorrent was designed for applications that do not have time constraints, multiple studies have proved that few changes to its strategies for peers and content selection can make it suitable for services with time constraints such as VoD services. In this report, the BitTorrent extensions for VoD services are reviewed. Features of the open source BitTyrant client, which is based on Azareus, are also investigated. The study of this report is to design a VoD delivery platform for the “Dynamic TV" research project supported by Telecom.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
