Aodv Routing Protocol Implementation On Linux Systems

Routing is a very important researching field in wireless self-organizing network. In order to adapt various occasions, people has designed many routing protocols and AODV(Ad hoc On-Demand Distance Vector) is one of these . The MANET WG(Mobile Ad hoc NETworks Working Group) of IETF(Internet Engineering Task Force) recommends AODV to users because of its simplicity,practicality and good performance. This thesis introduce how to implement AODV routing protocol on linux OS, and build a wireless self-organizing network based on IEEE802.11b NIC, Which extends the network organization mode of IEEE 802.11. And this can also provide routing function for network organization of military radio stations.First, we introduce some knowledge of wireless self-organizing network and WLAN(Wireless LAN) briefly, giving a highlight overview about the key contents. Secondly,we present the network framework and routing implementation scheme of Linux OS . Furthermore, we analyze the fundamental principles of AODV routing protocol .Base on which we propose and realize our own implementation methods of AODV.The implementation framework can be divided into three main parts. One part is the interface with Linux OS,another is the inside-kernel module which is used to record the last used time of every routing. and the third part is the realization of AODV logic algorithm. In article we evaluate its performance through measurement, analyze and compare the results. From which we can find that the route discovery time can be limited within 50ms when the hops is no more than 5.Finally, we make conclusions for completed work and main contributions of this research work, and prospect for directions of future research.