Routing Protocol Selection for Intelligent Transport System (ITS) of VANET in High Mobility Areas of Bangladesh

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The ultimate objectives of VANETs are to provide safer and Intelligent Transportation System (ITS) where drivers can communicate with each other in higher mobility for secure travel. In the case of the vehicular communication in Bangladesh, no ITS of VANET is practically developed so far. To implement VANET for Bangladesh, the selection of the protocols and path routing is the most common strategies that are to be focused while designing VANETs. This paper illustrates the evaluation of four routing protocols: AODV, AOMDV, OLSR, and DSDV which are applied on open street map in New Paltan area in Dhaka city, Bangladesh. Our simulations are enacted using SUMO (for vehicular movement) simulators and NS2 (for network traffic) with two ray ground propagation model and scenarios configured to mirror the conditions of real world. The simulations are made on the basis of various parameters such as Packet Delivery Ratio (PDR), end-to-end average delay, jitter, and throughput. The simulation outcomes show that OLSR gains higher PDR assimilating to AODV, AOMDV, and DSDV under low network load. PDR is also quite consistent with high network load. In terms of delay, DSDV provides lower end-to-end delay as compared to other routing protocols in lower and higher network load. The OLSR protocol gains maximum average throughput in low network load but AODV outperforms OLSR and DSDV in higher congestion area. If routing overhead is the major choice then OLSR is the best-fitted protocol because it provides lower overhead in both low and high mobility situations.