Video Streaming with Network Coding |
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Authors: | Kien Nguyen Thinh Nguyen Sen-Ching Cheung |
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Affiliation: | (1) School of EECS, Oregon State University, Corvallis, Oregon, USA;(2) ECE Department, University of Kentucky, Lexington, Kentucky, USA |
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Abstract: | Recent years have witnessed an explosive growth in multimedia streaming applications over the Internet. Notably, Content Delivery
Networks (CDN) and Peer-to-Peer (P2P) networks have emerged as two effective paradigms for delivering multimedia contents
over the Internet. One salient feature shared between these two networks is the inherent support for path diversity streaming
where a receiver receives multiple streams simultaneously on different network paths as a result of having multiple senders.
In this paper, we propose a network coding framework for efficient video streaming in CDNs and P2P networks in which, multiple servers/peers are employed to simultaneously
stream a video to a single receiver. We show that network coding techniques can (a) eliminate the need for tight synchronization
between the senders, (b) be integrated easily with TCP, and (c) reduce server’s storage in CDN settings. Importantly, we propose
the Hierarchical Network Coding (HNC) technique to be used with scalable video bit stream to combat bandwidth fluctuation
on the Internet. Simulations demonstrate that under certain scenarios, our proposed network coding techniques can result in
bandwidth saving up to 60% over the traditional schemes. |
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