基于信息传输平台的分层路由协议设计.doc

  基于信息传输平台的分层路由协议设计 付洁，刘丹谱** （北京邮电大学网络体系构建与融合北京市重点实验室，北京 100876） 5 10 15 20 25 30 35 40 摘要：随着 Ad Hoc 网络研究的不断成熟，无线 Mesh 网络以其网状的拓扑结构和对 Ad Hoc 路由技术的借鉴，正逐步发挥这种组网方式的优势。本文的研究主要是基于特殊军事信息传 输平台的特殊场景应用，目的是设计出符合特定逻辑拓扑要求的组网方案，并研究可以最大 限度提高性能的路由协议。针对信息传输平台对抗毁顽存性能的特殊要求和树形逻辑拓扑， 提出使用分簇式 Mesh 方式组网，同时采用先应式协议和反应式协议结合的分层路由协议， 以提高路由协议效率和网络整体性能。仿真验证，丢包率和时延均比单纯的先应式路由协议 有所改善，并且解决了传统反应式路由协议无限制泛洪的缺点。 关键词：无线网状网；信息传输平台；分层路由 中图分类号：TP393 A Hierarchical Routing Protocol Based On Information Transmission Platform Fu Jie, Liu Danpu (Beijing Key Laboratory of Network System Architecture and Convergence, Beijing University of Posts and Telecommunications, Beijing 100876) Abstract: With the rapid development of Ad Hoc Networks,Wireless Mesh Networks，due to its mesh topology and some technologies from Ad Hoc Network, is gradually playing a more important role in network organization. The study in this paper is based on a special information transmission platform,the aim is to design a networking scheme which corresponds with this logical topology,and to research on a routing protocol which can improve its performance at its utmost.As to its strict requirements for invulnerability and tree-like topology of information transmission platform,a hierarchical clustering way of network organization is put forward,and a routing protocol that combines table-driven routing protocol with on-demand routing protocol is adopted to improve the efficiency and whole networking function.Simulation results reveal that the packet loss rate and end-to-end delay are better than simple table-driven protocol,and the scheme solves the unlimited flooding disadvantage of on-demand protocol. Keywords: Wireless Mesh Networks; Information Transmission Platform; Hierarchical Routing 0 引言 信息传输平台是一个全系统的数话网络，需要建立与上级、友邻的互连互通链路。为了 提高系统网络的抗毁顽存性能，采用栅格网络结构，采用多种通信手段构建网络链路，各个 用户终端具备级联能力，提高特殊条件下链路构建能力。系统具有话音和数据通信能力，支 持通信的各种业务，包括话音、数据、传真的图像、视频等。 信息传输平台的整体网络通信架构总共有四级通信节点：骨干节点-第一级下级节点-第 二级下级节点-第三级下级节点。在应用形式上是一个树状通信网络，基本应用形式以骨干 节点、第一级下级节点为中心逐级