可生存多播视频流网络的网络编码

C. Bentz, S. Elloumi, É. Gourdin, Thibaut Lefebvre
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引用次数: 1

摘要

为了确保视频流的可靠传输,网络必须发出额外的数据,以便在某些服务器出现故障时替换丢失的数据。一个关键的问题是在保证服务质量的同时尽可能降低所谓的冗余。在本文中,我们提供了面向保护的模型来计算最小冗余级别,以确保每个客户在发生故障的情况下仍然接收到所需的流。特别是,我们的模型允许我们比较使用和不使用网络编码(一种允许在网络内执行编码操作的技术)的视频流多播传输中的最佳冗余。我们的计算实验表明,在许多现实的网络设置中,使用网络编码有助于减少冗余。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Network coding for survivable multicast video streaming networks
To ensure the robust delivery of video streams, a network must emit additional data that will replace the missing ones in case of a failure of some server. One key issue is then to keep this so-called redundancy as low as possible while still ensuring some quality of service. In this paper, we provide protection-oriented models to compute the minimum level of redundancy ensuring that every customer still receives its required stream whatever failure scenario occurs. In particular, our models allow us to compare the optimal redundancy in the multicast delivery of video streams with and without the use of network coding, a technique that allows to perform coding operations within the network. Our computational experiments show that the use of network coding helps to reduce the redundancy in many realistic network settings.
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