目前的无线Ad Hoc网络路由协议只能适用于无线局域网本身,而没有实现与Inernet的连接。为了实现AdHoc网络与Internet的连接,通过改进原有的AODV协议来实现无线局域网节点与Internet上节点的互连。在新的协议中,无线局域网内的节点使用原AODV协议互相通讯,无线节点使用改进的AODV协议通过网关与Internet网络上的固定节点进行通讯。在AODV路由协议的基础上提出了三种网关发现算法,并在NS2仿真平台上对这三种网关发现算法的性能进行了比较。从仿真结果来看,基于AODV协议上的网关发现算法是可行的。
Currently,the wireless Ad Hoc network protocols can only be used within the wireless LAN, but can not access the Internet. In order to achieve the goal, realizes the wireless Intemet access by modification of AODV. The wireless nodes use the old AODV for communication with other wireless nodes in the wireless LAN, while use the new protocol for communication with the fixed nodes on the Internet. Three ways of gateway discovery algorithm have been prompted based on AODV protocol. And their performances have been cornpared under the NS2 simulation platform. According to the results of simulation,conclude that the gateway discovery algorithm based on the AODV is feasible.