Abstract
Advances in network technology make multicast one of the most feasible video streaming delivery techniques for the near future. However, the scalability of a multicast VoD system is limited by the server bandwidth. In this paper, we propose a new multicast delivery scheme that allows every active client to collaborate with the server in order to scale the VoD system performance beyond the servers physical limitations. The solution combined the multicast delivery scheme and peer-2-peer paradigm in order to decentralize the delivery process. The new video delivery scheme is able to merge two or more multicast channels using distributed collaborations between a group of clients. We compared the new policy with chaining and patching schemes and the experimental results showed that our policy is better than previous schemes in terms of reduction of resource requirements and local network load. Compared with multicast patching policy, the new scheme reduced the resource requirement up to 77.5% while the local network load was 66.9% lower than a peer-2-peer chaining policy.
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