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。
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.
出处
《计算机工程与科学》
CSCD
北大核心
2011年第6期6-11,共6页
Computer Engineering & Science
基金
国防预先研究课题(405010202
513160302)
