An Analysis of Various Approaches for Transmission of Safety Message over the VANET Scenario

Abstract

VANET is vehicular Ad-hoc network which is used for intelligent transport system. For the drivers the ad-hoc network is used to transmit various types of message over the network. Safety message has to transmit for the security reasons on the vehicle and road transportation various routing protocols. GPRS, AODV, DSR, PUMA these are various routing protocol used for message transmission. VANET scenario is used for mainly V2V and V2R purposes. V2V is vehicle to vehicle communications and V2R is vehicle to roadside communication. In various scenarios message transmission is done according to vehicle density available on the road. Based on the real time road density vehicle establish reliable route for the communication on packet delivery The main issue of road density is due to high load on road message communication get overhead due to less amount of network bandwidth to overcome this issue cognitive radio. Through GPRS this problem can be resolved