Optimal proxy management for multimedia streaming in content distribution networks
NOSSDAV '02 Proceedings of the 12th international workshop on Network and operating systems support for digital audio and video
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WWW '03 Proceedings of the 12th international conference on World Wide Web
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A Novel Dynamic and Scalable Caching Algorithm of Proxy Server for Multimedia Objects
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AIC'08 Proceedings of the 8th conference on Applied informatics and communications
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IMSA '07 Proceedings of the Eleventh IASTED International Conference on Internet and Multimedia Systems and Applications
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IMSAA'09 Proceedings of the 3rd IEEE international conference on Internet multimedia services architecture and applications
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GCC'05 Proceedings of the 4th international conference on Grid and Cooperative Computing
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PCM'05 Proceedings of the 6th Pacific-Rim conference on Advances in Multimedia Information Processing - Volume Part II
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ICIC'05 Proceedings of the 2005 international conference on Advances in Intelligent Computing - Volume Part I
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ICOIN'06 Proceedings of the 2006 international conference on Information Networking: advances in Data Communications and Wireless Networks
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ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
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We address the problem of efficiently streaming a set of heterogeneous videos from a remote server through a proxy to multiple asynchronous clients so that they can experience playback with low startup delays. We determine the optimal proxy prefix cache allocation to the videos that minimizes the aggregate network bandwidth cost. We integrate proxy caching with traditional server-based reactive transmission schemes such as hatching, patching and stream merging to develop a set of proxy-assisted delivery schemes. We quantitatively explore the impact of the choice of transmission scheme, cache allocation policy, proxy cache size, and availability of unicast versus multicast capability, on the resulting transmission cost. Our evaluations show that even a relatively small prefix cache (10%-20% of the video repository) is sufficient to realize substantial savings in transmission cost. We find that carefully designed proxy-assisted reactive transmission schemes can produce significant cost savings even in a predominantly unicast environment such as the Internet.