Published Paper Details:

Intervehicle communication (IVC) is gaining attention of research community and Automotive industry as it enables intelligent Transportation systems (ITS). Intervehicle communication enables , real-time delivery of safety related messages to drivers and passengers of vehicles. Wireless Vehicular Ad hoc Network known as VANET is now emerging as a new class of wireless ad hoc networks. Wireless Vehicular Ad hoc Networks (VANET) are spontaneous networks formed by moving vehicles provisioned with wireless network interfaces, these vehicles could have similar or different radio access technologies, short-range or medium range wireless communication system. These moving vehicles can communicate among themselves and with roadside infrastructure communication networks. Delivering communication services with consistent QoS and high degree of reliability in a wireless vehicular heterogeneous and high-speed network is extremely critical and is an ongoing research. Governmental and Standardization organizations are showing interest in VANET. Recent survey and statistics, indicated a significant reduction in deaths due to vehicular accidents, can be achieved by providing real-time safety messages to driver and passengers. Safety messages comprises of alerting drivers about road conditions ahead, proving real-time update through video images, real-time update on weather conditions on road ahead and early detection of traffic signals etc. This study evaluated the optimum routing for VANET wireless ad hoc networks with AODV as routing protocol. AODV (Ad-hoc On-demand Distance Vector) routing parameters were evaluated for variations in key parameters, RREQ_RETRIES and MAX_RREQ_TIMEOUT. Key parameter values were studied for various vehicular node mobility to ascertain optimum configuration to enable better performance for VANET. The performance metrics used to determine the performance data were Packet Delivery ratio (PDR), Throughput, Packet Loss, and routing overhead. The result demonstrates that the key Parameters of AODV, RREQ_RETRIES and MAX_RREQ_TIMEOUT changes with the node speed and produced the best results for the wireless ad-hoc network with AODV as routing protocol. As the vehicle speed in VANETT are typically extremely high, above demonstration of enhancement in performance in network for the high-speed wireless nodes provides vital input for the design of VANET for optimum network performance.