无线Mesh网络可靠多播路由

无线Mesh网络多播路由是无线路由必须解决的关键技术。部分研究者对网络资源和服务质量（QoS）进行研究，提出了建立最短路径树、最小开销树、负载感知、信道分配多播等多播算法；有的算法考虑链路可靠性，建立备用路径。将结合网络资源和可靠性对多播路由算法进行研究，提出了建立可靠多播树（RT，Reliable Tree）的多播路由算法：可靠多播树是一个多树结构，由一棵首选多播树和一棵多径树构成，多径树提供可靠多路径，以提高网络吞吐量。

Reliable Multicast Routing in Wireless Mesh Network

Multicast routing is the key technology in wireless mesh network. At present, the research of multicast routing focuses on the network resources and QoS guarantee, and such muhicast algorithm as minimal cost trees, shortest path trees, load awareness, and channel-allocated multieast in wireless mesh network are proposed. Meanwhile, the link reliability and the establishment of backup path are also considered in some of these algorithms. This paper, based on network resources and reliability, proposes a reliable tree algorithm and establishes a double multicast tree structure. The reliable multieast tree, with a multi-tree structure, is composed of a primary tree and a multi-path tree, the primary tree minimizes the number of relay nodes while the multi-path tree provides reliable multiple paths, thus raising the throughput of the whole network.