Improving Mobility-aware Routing in Vehicular Ad hoc Networks Considering Two Level Architecture

In VANET, moving vehicles each act as one moving node. Because of the large mobility of vehicles, the topology of the network is unstable. This instability of the network and its rapid changes have created a major challenge with regard to mobility management. Optimizing routing across automotive networks improves network node mobility management and minimizes clustering changes. As a result, in this study, the node clustering method was used for greater stability in node mobility. This study aims to significantly reduce changes in network topology, which means a decrease in clusters, as well as a significant increase in cluster survival. A random mobility model was considered in NS-3 and the speed of the nodes was randomized between 0 and 30 m/s. The simulation results showed that the proposed protocol has a high rate of accepted packages and the average survival of nodes and at the same time low cluster changes, which has a significant effect on improving mobility.