Therefore, it is very important to research efficient multicast routing algorithms.

因此研究构造多播树的多播路由算法就非常重要。

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This paper proposed a novel group multicast routing algorithms, it is more concise and more optimal than the old method.

本文提出一种新的成组广播路由算法，它比传统的成组广播路由算法在性能上有了一定的提高，同时更为简洁。

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Based on the above work, our research on overlay multicast is performed in the following aspects, which include centralized routing algorithms, distributed routing protocols and system prototype.

在此基础上，我们分别从覆盖多播的集中式路由算法、分布式路由协议和原型系统等几方面开展了研究工作。

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