电子学报 ›› 2007, Vol. 35 ›› Issue (4): 614-620.

• 论文 • 上一篇    下一篇

无线Mesh网中一种基于综合准则的DSR扩展路由方法

沈 强1, 方旭明1,2   

  1. 1. 西南交通大学移动通信省重点实验室,四川成都 610031;2. 东南大学移动通信国家重点实验室,江苏南京 210096
  • 收稿日期:2005-11-04 修回日期:2006-12-02 出版日期:2007-04-25 发布日期:2007-04-25

An Integrated Metrics Based Extended Dynamic Source Routing Protocol in Wireless Mesh Networks

SHEN Qiang1, FANG Xu-ming1,2   

  1. 1. Provincial Key Laboratory of Mobile Communications,Southwest Jiaotong University,Chengdu,Sichuan 610031,China;2. National Mobile Communications Research Laboratory,Southeast University,Nanjing,Jiangsu 210096,China
  • Received:2005-11-04 Revised:2006-12-02 Online:2007-04-25 Published:2007-04-25

摘要: 无线Mesh网(Wireless Mesh Network:WMN)是一种新型的分布式宽带无线网络结构,相对于典型的移动Ad hoc网络,该网络由于具有节点移动性小、不受电池动力限制等特点,从而导致传统的移动Ad hoc路由协议不再适用.为了满足WMN多媒体业务传输的性能要求,WMN路由必须满足负载均衡、路由容错与网络容量等目标.本文首先介绍了当前几种已有的WMN路由协议,在此基础上,提出了一种适用于WMN的基于综合准则的动态源路由(Dynamic Source Routing:DSR)扩展路由方法,该方法综合考虑了投递率、剩余带宽以及节点负载等因素.分析与仿真结果表明,该算法极大地提高了网络吞吐量,并且达到了负载均衡的设计目标.

关键词: WMN, 路由协议, 跨层设计, 负载均衡

Abstract: Wireless Mesh Network(WMN) is a new distributed broadband access network.Compared with the typical mobile Ad hoc network,it is with less mobility and usually not powered by the battery.Therefore,the traditional mobile Ad hoc routing protocols are no longer suitable for WMN.In order to meet the performance requirements of multimedia traffic transmission,the routing protocol designed for WMN must be taken into account the combination of load balance,fault tolerant and throughput,etc.This paper firstly introduces typical structures and characteristics of WMN,and several relevant WMN routing protocols.Then a method of integrated metrics based Extended Dynamic Source Routing (EDSR) protocol is proposed.The analysis and simulation results show that the proposed EDSR protocol improves the throughput of WMN significantly,which reaches the target of load balance simultaneously.

Key words: wireless mesh networks, routing protocol, cross-layer design, load balance

中图分类号: