摘要： 提出了用于移动分组无线网的多播路由协议。在移动分组无线网环境中，多播路由协议起着非常重要的作用。传统的应用于有线网络的多播方法无法适应移动分组无线网具有的拓扑结构变化和带宽有限等特点。在协议中不需要维护全局的路由信息，而采用按需路由发现策略，动态建立路由信息及维持多播组成员关系。仿真实验显示协议在带宽较低、多播组成员数量变化较大的移动分组无线网环境中，具有较好的可靠性和工作效率。

关键词: 移动分组无线网, 多播协议, 按需路由, 转发群组

Abstract: This paper proposes a multicast protocol for mobile packet radio network . Multicast protocol plays an important role in a mobile packet radio network environment. The traditional multicast methods proposed for wired infrastructures are not well suited to handle bandwidth limitations and unpredictable topology changes . The protocol needn't maintain permanent route tables with full topological views. Instead, multicast senders reactively and dynamically discover routes and obtain multicast group information on demand .The protocol simulation experiments show that the multicast protocol is robust to mobility , has low bandwidth overhead , scales well with membership group size, and can be used effectively for mobile packet radio network.

中图分类号: 

• TN929.53