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首页> 外文期刊>International journal of computer science and network security >Performance Comparison of Proactive and Reactive Multicast Routing Protocols over Wireless Mesh Networks
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Performance Comparison of Proactive and Reactive Multicast Routing Protocols over Wireless Mesh Networks

机译：无线网状网络上主动和被动组播路由协议的性能比较

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摘要

Multicast routing is a key technology for modern communication networks. It sends a single copy of a message from a source to multiple receivers over a communication link that is shared by the paths to the receivers. This is especially appropriate in wireless environments where bandwidth is scarce and many users are sharing the same wireless channels. In particular, for WMNs, multicast can represent a huge enhancement of the network capacity by taking advantage of links which can be shared by multiple users to receive the same data, which is transmitted only once. To support multicasting, several multicast routing protocols are designed for Internet and Ad hoc networks. However, no specific multicast routing protocol is designed for WMNs. Therefore, the performance comparison of existing multicast routing protocols over wireless mesh networks is essential in order to analyze their behavior and effectiveness. This paper presents the simulation and analysis of the performance of existing proactive and reactive multicast routing protocols over WMNs. Three prominent multicast routing protocols are selected for performance comparison; they are On Demand Multicast Routing Protocol (ODMRP), Multicast Ad hoc On Demand Distance Vector (MAODV) Protocol and Multicast Open Shortest Path First (MOSPF). Among them, MOSPF is a proactive routing protocol while MAODV and ODMRP are reactive multicast routing protocols. MAODV fabricates and maintains a shared multicast tree for each multicast group and ODMRP is a mesh-based approach and uses a forwarding group concept. Our aim is to investigate the relative strength and weaknesses of each protocol.
机译：组播路由是现代通信网络的一项关键技术。它通过到接收者的路径共享的通信链路，将消息的单个副本从源发送到多个接收者。这在带宽稀缺且许多用户共享相同无线信道的无线环境中尤其适用。特别是，对于WMN，多播可以利用可以由多个用户共享的链接来接收仅发送一次的相同数据，从而极大地增强了网络容量。为了支持多播，为Internet和Ad hoc网络设计了几种多播路由协议。但是，没有为WMN设计特定的多播路由协议。因此，为了分析其行为和有效性，必须比较无线网状网络上现有多播路由协议的性能。本文对WMN上现有的主动和被动组播路由协议的性能进行了仿真和分析。选择了三种主要的组播路由协议进行性能比较。它们是随需应变组播路由协议（ODMRP），随需应变组播向量距离矢量（MAODV）协议和多播开放最短路径优先（MOSPF）。其中，MOSPF是主动式路由协议，而MAODV和ODMRP是被动式多播路由协议。 MAODV为每个多播组构造并维护一个共享的多播树，而ODMRP是基于网格的方法，并使用转发组的概念。我们的目的是研究每种协议的相对优势和劣势。

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