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首页> 外文期刊>Communications Magazine, IEEE >Using digital fountains in future IPTV streaming platforms: a future perspective
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Using digital fountains in future IPTV streaming platforms: a future perspective

机译：在未来的IPTV流媒体平台中使用数字喷泉：未来的前景

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摘要

Coding techniques are progressively succeeding in finding a beneficial use throughout all the components of advanced multimedia streaming networks, including peer-to-peer (P2P) content distribution strategies. In fact, although P2P algorithms are regarded as an important technology that will be part of future commercial Internet protocol television (IPTV) platforms, it has been shown that their ability to efficiently distribute multimedia streams within strict time constraints, and their robustness to high churn rates, can still improve when putting to good use source and network coding algorithms. For this reason, in the past few years a wealth of research has been undertaken aiming at jointly optimizing both coding and streaming schemes. In this article, we analyze the progress made by the latest scientific research in the field of jointly using coding and P2P streaming strategies, and we offer a set of experimental results performed on a real planet-wide P2P streaming test-bed, using Digital Fountains (DFs). Surprisingly, our testbed study reveals that utilizing DF techniques is not always beneficial to the distribution of streaming data using a P2P distribution strategy. In fact, our results show that only when the network scales beyond a certain size, it is possible to appreciate the advantages introduced by the use of DFs, showing that coding techniques should always be carefully deployed and their advantages well understood. For this reason, we believe this work can provide a useful aid in better appreciating the critical aspects of jointly utilizing multimedia streaming and DF coding techniques for IPTV.
机译：编码技术逐渐成功地在高级多媒体流网络的所有组件中找到了有益的用途，包括对等（P2P）内容分发策略。实际上，尽管P2P算法被视为将成为未来商业互联网协议电视（IPTV）平台的一部分的重要技术，但事实表明，它们在严格的时间限制内有效分配多媒体流的能力以及对高流失率的鲁棒性率，在充分利用源代码和网络编码算法时仍可以提高。因此，在过去的几年中，已经进行了大量的研究，旨在共同优化编码和流传输方案。在本文中，我们分析了结合使用编码和P2P流策略的最新科学研究进展，并提供了使用Digital Fountains在真实的全球P2P流测试平台上进行的一组实验结果（DFs）。出乎意料的是，我们的测试研究表明，使用DF技术并不总是有益于使用P2P分发策略分发流数据。实际上，我们的结果表明，只有当网络扩展到一定规模时，才有可能意识到使用DF带来的优势，这表明应始终谨慎部署编码技术，并充分理解其优势。因此，我们认为这项工作可以为更好地理解将多媒体流和DF编码技术联合用于IPTV的关键方面提供有用的帮助。

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