基于网关发现方式的MANET接入机制研究

Study of MANET access mechanism based on gateway discovery method

针对目前移动Ad Hoc网络(MANET)的路由协议大部分仍局限于Ad Hoc网络本身的问题,提出一种使MANET接入Internet的网关发现机制.这种机制通过按需路由方式对AODV协议中的RREQ消息和RREP消息进行扩展,使移动节点能与固定节点通过网关进行通信,实现MANET接入Internet.通过对比3种网关发现方式的主要性能指标,发现Hybrid方式在兼容性场景中的网络性能最优.NS2仿真结果验证了这种机制的可行性和有效性.

Aiming at the problem of current mobile Ad Hoc network（MANET）routing protocol mostly limited to Ad Hoc network itself,a mechanism to make MANNET access Internet was proposed.This mechanism improved RREQ information and RREP information of AODV protocol by reactive way,made mobile nodes communicating with fixed nodes through gateway,and realized that MANET was connected to Internet.Through contrasting main performance evaluation of three gateway discovery,Hybrid gateway discovery of three gateway discovery methods was optimal in compatibility scene.The simulation in NS2 showed the gateway discovery mechanism is feasibility and validity.