Performance analysis of the Vehicular Ad hoc Networks (VANET) routing protocols AODV, DSDV and OLSR

The VANET (Vehicular Ad hoc Network) is a collection of mobile nodes forming a temporary network on variable topology, operating without a base station and without a centralized administration. The characteristics of VANET network that distinguishes it from other ad hoc networks, such as high mobility and communication with the infrastructure to support security or comfort applications, have prompted researchers to develop models and mobility specific protocols. The main goal of this paper is firstly to compare the performance of three Ad hoc routing protocols: Optimized Link State Routing (OLSR), Ad-hoc On-Demand Distance Vector (AODV) and Destination-Sequenced Distance Vector (DSDV) and secondly, to examine the impact of varying mobility, density and pause time on the functionality of these protocols. The results of this paper demonstrate that AODV have better performance in terms of Throughput and Packets Delivery Rate (PDR), whereas OLSR have best performance in terms of Packet Delivery Time (Delay).