29 January 2007 A more aggressive prefetching scheme for streaming media delivery over the Internet
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Abstract
Efficient delivery of streaming media content over the Internet becomes an important area of research as such content is rapidly gaining its popularity. Many research works studied this problem based on the client-proxy-server structure and proposed various mechanisms to address this problem such as proxy caching and prefetching. While the existing techniques can improve the performance of accesses to reused media objects, they are not so effective in reducing the startup delay for first-time accessed objects. In this paper, we try to address this issue by proposing a more aggressive prefetching scheme to reduce the startup delay of first-time accesses. In our proposed scheme, proxy servers aggressively prefetch media objects before they are requested. We make use of servers' knowledge about access patterns to ensure the accuracy of prefetching, and we try to minimize the prefetched data size by prefetching only the initial segments of media objects. Results of trace-driven simulations show that our proposed prefetching scheme can effectively reduce the ratio of delayed requests by up to 38% with very marginal increase in traffic.
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Junli Yuan, Junli Yuan, Qibin Sun, Qibin Sun, Susanto Rahardja, Susanto Rahardja, } "A more aggressive prefetching scheme for streaming media delivery over the Internet", Proc. SPIE 6508, Visual Communications and Image Processing 2007, 650818 (29 January 2007); doi: 10.1117/12.704804; https://doi.org/10.1117/12.704804
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