Ad hoc无线网络中的组播路由协议

Multicast Routing Protocols in Ad hoc Wireless Networks

由固定网络、基础结构移动网络和非基础结构无线网络组成的集成网络将成为未来互联网发展的趋势。同时,面向组计算和组通信的需求不断增长,要求未来的集成网络能为用户提供组播通信的功能。Adhoc无线网络是非基础结构无线网络的典型代表,具有带宽有限、拓扑结构易变和电池能源有限的特点,这些特性使得未来集成网络实现组播通信具有一定的挑战性。该文在分析Adhoc无线网络基本特性的基础上,综合评述了新近的Adhoc网络组播路由协议的研究现状,并对几种典型的Adhoc网络组播路由协议的特点进行了分类分析和比较,最后讨论了Adhoc无线网络组播路由协议的发展趋势和挑战。

It is anticipated that a integ ra tion network which consists of a wired backbone,and a collection of fixed-infr astructure mobile,and fully mobile(or Ad Hoc)networks will become the trend of internetwork.At the same time ,the popularity of group-oriented computi ng and communication has grown tremendously,so it requires the future internetw orks to provide multicast communication.Moreover,ad hoc wireless network is a representative of fully mobile wireless networks,and it is characterized by sca rce resources and dynamic topologies.These make the multicast communications in the future internetwork have many challenges.In this paper,based on character istics analysis of Ad hoc wireless networks in detail,we survey the current r esearches for the Ad Hoc multicast routing protocols,and the key characteristic s of several typical multicast routing protocols overseas are given and compared .At the end,the trend and challenges of developing multicast protocols in ad hoc wireless networks are discussed.