Analysis of Vehicular Traffic Using Vanet Communications And Detection of Abnormal Vehicular Activities

Abstract

VANET(Vehicular Adhoc Network) is the new area of technology.VANET encom- passes V2I(vehicle to infrastructure communication) and V2V(vehicle to vehicle com- munication)using multi channel allocation mechanism. It provides a platform to share vehicle information with neighbouring vehicles and local infrastructure. The objective of this study is to obtain indirect information about the status of vehicles and road condition by observing pattern of communication, both V2V and V2I. It is possible to detect a failure node(vehicle) or stationary node on the road by observing traffic pattern using V2V communication.IEEE 802.11p protocol which has been proposed for V2V and V2I as been used to simulate data traffic to carry out the simulations. To send the messages to all vehicles in the proximity within minimum possible time we have applied two approaches.First approach is to reduce the time for RSU to receive and send the message to another vehicle node and the second approach is to reduce the switching time between SCH and CCH.It has been shown that RSU should send safety messages to moving vehicle on CCH channel. IEEE 802.11p has four types of di erent lower to higher priority traffic in between active and failure node. As we have to send the message with in a certain time ,throughput has to be improved. which has been achieved by reducing the message size.