Multi-level Caching with Delayed-multicast for Video-on-demand

C. Nguyen, D.B. Hoang (Australia), and A. Symvonis (Greece)


Video-on-Demand, Multimedia Networking


Delayed-Multicast is a novel transmission technique to support Video-on-Demand. It introduces buffers within the network to bridge the temporal delays between similar re quests thus minimizing the aggregate bandwidth and server load. This paper introduces an improved online algorithm for resource allocation with Delayed-Multicast by utilizing prior knowledge of each clip's popularity. The algorithm is intended to be simple so as to allow for deployment at mul tiple levels in a distribution network. The result is greater backbone traffic savings and a corresponding reduction in the server load.

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