Enhancement of inter-vehicular communication to optimize the performance of 3G/4G-VANET

Vehicular ad hoc networks are a part of mobile ad hoc networks with the dynamic property that the nodes are vehicles like cars, buses and motorcycles. VANETs are used for short range, high-speed communication among nearby vehicles, and between vehicles and roadside infrastructure units. Vehicle-to-Vehicle (V2V) communication supports services such as vehicle collision avoidance and road safety purpose by exchanging warning messages across vehicles and also that the VANET should increase the features by means of value-added services like navigation and location based services on road. We enhance the vehicular access technology to performing the high speed communication between vehicle to vehicle communication environments. In these technologies we proposed the three techniques used to provide a proper communication. I.e. DSRC (Dedicated Short Range Communications), WAVE (Wireless Access in Vehicular Environments) and IEEE 802.11p. AOMDV provides a reactive routing method to establish a various nodes for multiple access schemes and CMGM (cluster based adaptive mobile gateway management mechanism) to provide a periodic cluster advertisement for on-demand vehicular information and it integrates with 4G-VANET for indicating cluster gateway. An integration of VANET and 3G/4G networks using mobile gateways is an integral part of the architecture offering a wide range of communication between vehicles.