Impact of Network Size and Traffic to Adhoc Routing Protocols over Different IDM Models in VANETs

Vehicular Ad-hoc Network (VANET) is a technology which has taken enormous attention in the recent years. Rapid topology changes and frequent disconnections create the difficulty to design an efficient routing protocol for routing data among vehicles, through vehicle to vehicle (V2V) communication and vehicle to road side infrastructure communication (V2I) mode. The existing routing protocols for VANET are not efficient to meet every traffic scenarios. Thus, it is very necessary to identify the pros and cons of routing protocols which can be used for further improvement or development of any new routing protocol. This paper presents a relative study of two VanetmobiSim models viz Intelligent Driver Model with Intersection Management (IDM-IM) and Intelligent Driver Model with Lane Change (IDM-LC) on the anvil of different performance parameters considering different routing protocols. Performance of the protocols is measured in terms of delay, throughput and packet delivery ratio. The relative study of the protocols is shown by graphical results which help to settle on with an appropriate protocol under dissimilar network scenarios while the network size and traffic varies.