【摘要】 应用层组播树有的是构造在虚拟覆盖网络上的。针对虚拟覆盖网络构造的复杂性特点,采用基于代理技术的方法构造虚拟覆盖网络。把覆盖网络构造分为节点部署和链路选择两个问题,分别对其求解,完成覆盖网络的构造。仿真实验表明,采用此方案构造的覆盖网络具有合理的拓扑结构,利于在其上构造性能优越的应用层组播树。更多还原

【Abstract】 The application level multicast tree is constructed on the suppositional overlay network. In allusion to the complexity characteristic of the overlay network construction, the overlay network was built based on the proxy technology. The problem of the overlay network construction was divided into two problems: overlay network node placement and overlay network link selection. To respectively solve the two problems, the overlay network was constructed finally. The results of the simulation show that the overlay network based on this method has the reasonable network topology. The application level multicast tree on the overlay network has the ascendant performance.更多还原