自适应网络无线网关接入协议性能分析

Ad Hoc网络是一种没有有线基础设施支持的移动网络,网络中的节点均由移动主机构成.一些无线网关接入协议如移动IP协议、AODV 协议、NOAH协议、DSDV协议都可以通过无线节点接入有线节点,但是各自接入的方式不尽相同.对这几种接入协议进行比较分析.实验结果表明,MobileIP虽然传输抖动,速率比较低,但不会出现严重丢包,相对比较稳定.AODV 速率比较高,但在网关切换的时候,丢包严重.NOAH,DSDV协议如果不进行分析,设置静态路由,链路断开后,无法自动接入新的网关.

Performance evaluation of Ad Hoc wired-cum-wireless routing protocols using ns2 simulations

An ad hoc network is a collection of wireless mobile nodes dynamically forming a temporary network without the use of any existing network infrastructure or centralized administration.A number of wired-cum-wireless routing protocols like mobile IP routing(MIP),Ad Hoc on-demand distance vector plus routing(AODV+),no Ad Hoc routing agent(NOAH) and destination-sequenced distance-vector(DSDV) are implemented.All of them may access to wired nodes by different ways.An attempt is made to compare the performance of these protocols.Experimental results show that,MIP has little transmission vibration and low speed,but it's relatively stable.AODV+'s speed is quite high,but when switching the gateways,the drop is serious.If we neither analyze nor establish a static routing,after the link disconnected,NOAH and DSDV are unable to connect the new gateway automatically.