Author : Kalpana Gurung and Hari Mohan Singh

Today’s smart vehicles are embedded with computer, GPS receivers, short range wireless network interfaces make capable vehicles to communicate with their neighbour vehicles. Thus, they form a self organizing, self managing with low bandwidth network. This type of network called vehicular ad hoc network (VANET). VANET is a wireless communication area in which vehicles acts both as node and router. VANET provides variety of interesting applications ranging from safety to comfort levels. Therefore, it is one of the influencing areas for the improvement of Intelligent Transport System (ITS) in order to provide real time messages to the occupant of vehicles via communication. In this paper, our study is based on inter-vehicle communication over VANET. For this task, various voice CODECs behaviour was tested and analyzed the impact of varying traffic condition on the performance of QoS of VoIP. We designed simulation modules by using simulator QualNet6.1 and carried out extreme simulations. Results of simulations are presented in the terms of average jitter, average end-to-end delay, average throughput, average delay and mean opinion score (MOS).

Keywords: VANET, VoIP, H.323, UMTS, CODECs, QualNet6.1.

Article published in International Journal of Current  Engineering  and Technology, Vol.3,No.5(Dec- 2013)