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Towards SVC-based adaptive streaming in information centric networks

机译:在信息中心网络中实现基于sVC的自适应流传输

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摘要

HTTP Adaptive Streaming (HAS) is becoming the de-facto standard for video streaming services. In HAS, each video is segmented and stored in different qualities. The client can dynamically select the most appropriate quality level to download, allowing it to adapt to varying network conditions. As the Internet was not designed to deliver such applications, optimal support for multimedia delivery is still missing. Information Centric Networking (ICN) is a recently proposed disruptive architecture that could solve this issue, where the focus is given to the content rather than to end-to-end connectivity. Due to the bandwidth unpredictability typical of ICN, standard AVC-based HAS performs quality selection sub-optimally, thus leading to a poor Quality of Experience (QoE). In this article, we propose to overcome this inefficiency by using Scalable Video Coding (SVC) instead. We individuate the main advantages of SVC-based HAS over ICN and outline, both theoretically and via simulation, the research challenges to be addressed to optimize the delivered QoE.
机译:HTTP自适应流(HAS)成为视频流服务的实际标准。在HAS中,每个视频都被分割并以不同的质量存储。客户端可以动态选择最合适的质量级别进行下载,以使其适应各种网络条件。由于Internet并非旨在交付此类应用程序,因此仍缺少对多媒体交付的最佳支持。信息中心网络(ICN)是最近提出的破坏性体系结构,可以解决此问题,该体系结构的重点是内容而不是端到端连接。由于ICN具有典型的带宽不可预测性,因此基于标准AVC的HAS不能最佳地执行质量选择,从而导致较差的体验质量(QoE)。在本文中,我们建议通过使用可伸缩视频编码(SVC)来克服这种效率低下的问题。我们将基于SVC的HAS相对于ICN的主要优势进行了个性化描述,并在理论上和通过仿真概述了要优化交付的QoE所要解决的研究挑战。

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