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A CDN-P2P hybrid architecture for cost-effective streaming media distribution (2004)
| Venue: | Computer Networks |
| Citations: | 10 - 0 self |
BibTeX
@ARTICLE{Xu04acdn-p2p,
author = {Dongyan Xu and Sunil Suresh Kulkarni and Catherine Rosenberg and Heung-keung Chai},
title = {A CDN-P2P hybrid architecture for cost-effective streaming media distribution},
journal = {Computer Networks},
year = {2004},
volume = {44},
pages = {353--382}
}
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Abstract
To distribute video and audio data in real-time streaming mode, two different technologies- Content Distribution Network (CDN) and Peer-to-Peer (P2P)- have been proposed. However, both technologies have their own limitations: CDN servers are expensive to deploy and maintain, and consequently incur a cost for media providers and/or clients for server capacity reservation. On the other hand, a P2P-based architecture requires sufficient number of seed supplying peers to jumpstart the distribution process. Compared with a CDN server, a peer usually offers much lower out-bound streaming rate and hence multiple peers must jointly stream a media data to a requesting peer. Furthermore, it is not clear how to determine how much a peer should contribute back to the system after receiving the media data, in order to sustain the overall media distribution capacity. In this paper, we propose and analyze a novel hybrid architecture that integrates both CDN and P2P based streaming media distribution. The architecture is highly cost-effective: it significantly lowers the cost of CDN capacity reservation, without compromising the media quality delivered. In particular, we propose and compare different limited contribution policies for peers that request a media data, so that the streaming capacity of each peer can be exploited on a fair and limited basis. We present: (1) in-depth analysis of the proposed architecture under different contribution policies, and (2) extensive simulation results which validate the analysis. Our analytical and simulation results form a rigorous basis for the planning and dimensioning of the hybrid architecture.
Keyphrases
cdn-p2p hybrid architecture medium data cost-effective streaming medium distribution cdn server extensive simulation result medium quality out-bound streaming rate overall medium distribution capacity cdn capacity reservation limited basis rigorous basis medium provider distribution process different limited contribution policy real-time streaming mode different contribution policy p2p-based architecture server capacity reservation audio data hence multiple peer novel hybrid architecture simulation result different technology content distribution network in-depth analysis medium distribution hybrid architecture sufficient number
