Study On Zone Routing Based On DSR Protocol

With the development in computer and wireless communication technologies, mobile wireless networks are in increasingly widespread use. The wireless ad hoc networks have been received more and more attention due to their characters of having no infrastructure. Many routing protocols have been proposed for ad hoc network, the mechanisms they adopt were traditionally categorized as table-driven and on-demand. On-demand routing protocols are widely used in mobile ad hoc networks due to their capability of adjusting to frequent network topology changes within acceptable routing overhead.Among the numerous on-demand routing protocols of the wireless Ad hoc networks, the dynamic source routing (DSR) protocol proposed by Carnegie Mellon University is a representative one, However, DSR is a reactive routing protocol, it's reactive lately when topology of Network is changed. So it perform bad in real-time traffics , and it must lead to big delay. In order to reduce time of route request and decrease the times of route request, Zone Routing Based on DSR(ZRDSR) is proposed in this paper. It is based on DSR, and plus a zone status table in nodes. Nodes will aware of the topology changes because of the zone status table in the neighborhood. So it is useful to improve the problems mentioned above.In this paper, we will introduce wireless ad hoc networks and their routing protocols at first. Secondly, we will explain the arithmetic of the ZRDSR protocol. At last, we implement ZRDSR via network simulation and evaluate its performance. The Simulation results demonstrate that ZRDSR can improve the performance of DSR protocol significantly, especially in more challenging situations of high mobility.