Applying multiple description coding to enhance the streaming scalability on CDN‐P2P network
Chow‐Sing Lin, I‐Ting Lee · International Journal of Communication Systems · 2009
Abstract 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, andOpen‐Loop‐First(OLF), are studied. In addition, we propose theintra‐description recoveryandinter‐description recoveryto 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.