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首页> 外文期刊>IEEE Transactions on Knowledge and Data Engineering >An alternative paradigm for scalable on-demand applications: evaluating and deploying the Interactive Multimedia Jukebox
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An alternative paradigm for scalable on-demand applications: evaluating and deploying the Interactive Multimedia Jukebox

机译：可伸缩按需应用程序的替代范例：评估和部署交互式多媒体自动存储塔

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摘要

Straightforward, one-way delivery of audio/video through television sets has existed for many decades. In the 1980s, new services like pay-per-view and video-on-demand were touted as the "killer applications" for interactive TV. However, the hype quickly died away, leaving only hard technical problems and costly systems. As an alternative, we propose a new jukebox paradigm offering flexibility in how programs are requested and scheduled for playout. The jukebox scheduling paradigm offers flexibility ranging from complete viewer control (true video-on-demand), to complete service provider control (traditional broadcast TV). We first describe our proposed jukebox paradigm and relate it to other on-demand paradigms. We also describe several critical research issues, including the one-to-many delivery of content, program scheduling policies, server location, and the provision of advanced services like VCR-style interactivity and advanced reservations. In addition, we present our implementation of a jukebox-based service called the Interactive Multimedia Jukebox (IMJ). The IMJ provides scheduling via the World Wide Web (WWW) and content delivery via the Multicast Backbone (MBone). For the IMJ, we present usage statistics collected during the past couple of years. Furthermore, using this data and a simulation environment, we show that jukebox systems have the potential to scale to very large numbers of viewers.
机译：通过电视机直接进行单向音频/视频传送已经存在了数十年。在1980年代，按次付费和点播视频等新服务被吹捧为交互式电视的“杀手级应用”。但是，炒作很快就消失了，只留下了技术难题和昂贵的系统。作为替代方案，我们提出了一种新的自动点唱机范例，可以灵活地请求和安排播放节目的方式。点唱机调度范例提供了从完整的观看者控制（真正的视频点播）到完整的服务提供商控制（传统广播电视）的灵活性。我们首先描述拟议的自动点唱机范例，并将其与其他按需范例联系起来。我们还描述了几个关键的研究问题，包括内容的一对多传递，程序调度策略，服务器位置以及诸如VCR样式的交互性和高级保留之类的高级服务的提供。此外，我们介绍了基于自动存储塔的服务的实现，该服务称为交互式多媒体自动存储塔（IMJ）。 IMJ通过万维网（WWW）提供调度，并通过多播骨干（MBone）提供内容传递。对于IMJ，我们提供了过去几年收集的使用情况统计信息。此外，使用此数据和模拟环境，我们证明了自动点唱机系统具有扩展到大量观众的潜力。

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