• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

J4 ›› 2011, Vol. 33 ›› Issue (6): 6-11.doi: 10.3969/j.issn.1007130X.2011.

• 论文 • 上一篇    下一篇

一种基于改进RTS/CTS的MANET高效报文转发策略

鲁佳,窦文华,师帅   

  1. (并行与分布处理国防科技重点实验室,湖南 长沙 410073)
  • 收稿日期:2010-06-11 修回日期:2010-09-28 出版日期:2011-06-25 发布日期:2011-06-25
  • 作者简介:鲁佳(1985),男,甘肃酒泉人,硕士生,研究方向为无线网络技术。窦文华(1946),男,山西平定人,教授,博士生导师,研究方向为高性能计算机网络。
  • 基金资助:

    国防预先研究课题(405010202,513160302)

An Efficient Packet Forwarding Strategy Based on the Improved RTS/CTS in MANET

LU Jia,DOU Wenhua,SHI Shuai   

  1. (National Laboratory for Parallel and Distributed Processing,Changsha 410073,China)
  • Received:2010-06-11 Revised:2010-09-28 Online:2011-06-25 Published:2011-06-25

摘要:

MANET网络由可自主移动的无线节点组成。节点的自主移动导致了链路路由的改变,因此需要有一个机制维护和发现路由信息。目前人们已经针对MANET网络提出了几种路由协议,但这些路由协议都是基于IP的且路由维护的代价高,这严重影响了MANET网络的稳定性、可扩展性和用户有效带宽。本文提出了一种基于改进RTS/CTS的MANET高效报文转发策略。该策略对标准IEEE 802.11协议进行了修改,利用改进的RTS/CTS报文信息,进行报文转发,从而避免了使用MANET网络路由协议给网络性能带来的影响。使用改进的NS2模拟了基于改进RTS/CTS的MANET高效报文转发策略。模拟结果表明:该策略可以有效地降低路由维护的开销并降低报文传输的延迟。

关键词: 移动自组网, 请求发送, 允许发送

Abstract:

A mobile ad hoc network(MANET) consists of wireless hosts that may move often. The movement of hosts results in a change in the routes, requiring some mechanism for determining the new routes. Several routing protocols have already been proposed for the MANET networks. Those protocols, based on IP and cost much, affect its stability, extendibility and bandwidth.This paper suggests an approach to modifying the  IEEE 802.11 protocol to enable the hosts to forward packets with the help of the improved RTS/CTS information instead of the routing protocols. It can keep from the effect caused by routing protocols.We have extended the NS2 network simulator to accurately model the forwarding strategy based on the improved RTS/CTS of the IEEE 802.11. The simulation results show that our strategy can effectively reduce the route maintenance overhead and reduce the packet transfer latency.

Key words: MANET;RTS;CTS