Balanced dynamic buffering for scalable video-on-demand streaming on peer-to-peer networks
Multimedia Tools and Applications
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Owing to the wide deployment of broadband networks, information can now be rapidly disseminated all over the world. Only the content of static texts and pictures has not yet met users' demands. Along with the rapid advance of computer-related technologies, how to efficiently provide multimedia content for a large number of heterogeneous users on the Internet, especially videos, has become a noticeable issue. In this paper, we discuss the adaptation of multiple description coding (MDC) for the loopback buffering mechanism to address the issue of peer heterogeneity on content distribution network–peer to peer (CDN-P2P) video-on-demand systems. Three description selection policies, Ordered, Round-Robin, and Open-Loop-First (OLF), are studied. In addition, we propose the intra-description recovery and inter-description recovery to deal with failed peers. The simulation results show that the OLF with loopback-MDC can significantly reduce the amount of uploading bandwidth of a proxy on CDN-P2P video-on-demand systems, and the inter-description recovery, sewing, can further effectively recover missing blocks and restore the continuity of a breaking sharing loop among peers. Copyright © 2009 John Wiley & Sons, Ltd. In this paper, we discuss the adaptation of multiple description coding for the loopback buffering mechanism to address the issue of peer heterogeneity on CDN-P2P video-on-demand systems. In addition, we also proposed the intra-description recovery and inter-description recovery to deal with failed peers. The simulation results show that the Open-Loop-First algorithm can significantly reduce the amount of uploading bandwidth of a proxy on CDN-P2P video-on-demand systems, and the inter-description recovery can further effectively recover missing blocks and restore the continuity of a breaking sharing loop among peers. Copyright © 2009 John Wiley & Sons, Ltd.