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首页> 外文会议>International Workshop on Multimedia Interactive Protocols and Systems(MIPS 2004); 20041116-19; Grenoble(FR) >Multi-source Multimedia Conferencing over Single Source Multicast: An Application-Aware Approach
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Multi-source Multimedia Conferencing over Single Source Multicast: An Application-Aware Approach

机译：单源多播上的多源多媒体会议：一种应用感知方法

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摘要

A key issue for the establishment of large-scale multimedia conferencing in the global Internet is the provision of a ubiquitous IP multicast service. Despite extensive research and standardization efforts, worldwide availability of IP multicast is still limited. Single-source multicast constitutes an alternative that achieves to alleviate many of these problems. However, the tradeoffs in realizing multi-source sessions over single-source multicast remain poorly understood. The focal point of this paper is the realization of a multi-source distance learning conferencing platform (ET&L) over a novel single-source IP multicast protocol (SLIM). We have formulated the design space for managing trees rooted at multiple senders in a conferencing session, using both previously proposed schemes as well as new methods exploiting the application semantics of synchronous distance learning. We have prototyped each of these methods to prove their respective viability and conducted experimentation within our laboratories and over the Internet without changes or cooperation from ISPs or network administrators. The principal outcome of this work is a study of the various alternatives for implementing multi-source sessions over single-source multicast. In general, our work shows that it is feasible and efficient to use single-source multicast as a building block for implementing multi-source group communication applications.
机译：在全球Internet中建立大规模多媒体会议的关键问题是提供无处不在的IP多播服务。尽管进行了大量的研究和标准化工作，但IP多播的全球可用性仍然有限。单源多播构成了减轻许多这些问题的替代方案。但是，在单源多播上实现多源会话的权衡仍然知之甚少。本文的重点是在新型单源IP多播协议（SLIM）上实现多源远程学习会议平台（ET＆L）。我们使用先前提出的方案以及利用同步远程学习的应用语义的新方法，为在会议会话中植根于多个发送者的树制定了设计空间。我们对每种方法进行了原型设计，以证明它们各自的可行性，并在实验室和Internet上进行了实验，而无需ISP或网络管理员的更改或合作。这项工作的主要成果是研究通过单源多播实现多源会话的各种替代方案。总的来说，我们的工作表明，使用单源多播作为实现多源组通信应用程序的构件是可行且有效的。

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