VANET system would behave under different conditions.It is known that networking and mobility component are required to form a VANET. Continuous increased of on-road vehicles has also increased the possibility of accidents, most of it caused by human errors. Hence, a solution has been proposed, which is to make vehicles more intelligent through research on vehicular ad hoc networks (VANETs). Researchers and developers have built VANET simulation software to allow the study and evaluation of various media access, routing, and emergency warning protocols. MATLAB and Simulation of Urban Mobility (SUMO) are further used for VANET simulation respectively. At the same time, TraCI4Matlab, an Application Programming Interface (API) developed in MATLAB that allows communication between any applications written in MATLAB and SUMO simulator is also discussed. Absence of road traffic safety takes a toll of precious human lives and poses a dire threat to our environment as well. Moreover, we present results of our proposed algorithm secure key exchange in NS2 simulator. Keywords: VANET, Simulator, Taxonomy, Attraction point, Lane Changing, Topology and GUI. I. INTRODUCTIONVehicular Ad-hoc Networks (VANETs) represent a rapidly emerging, particularly challenging class of Mobile Ad Hoc networks (MANETs). On a highway a vehicle cannot currently predict the speed of other vehicles. However, with use of sensor, computer and wireless communication equipment, speed could be predicted and a warning message sent every 0.5 seconds could limit the risk of potential accidents. An automated tool called simulation can imitate the protocol and yield a similar result to that of the real world. Simulator tool has been preferred over outdoor experiment because it simple, easy and cheap. VANET requires that a traffic and network simulator should be used together to perform this test. Prior to the implementation of VANETs on the roads, realistic simulations of VANETs using simulators are necessary. It is a technique whereby a software program models the behavior of a network either by calculating the interaction between the different network entities (routers, switches, nodes, access points, links etc.). Users customize the simulator to fulfill their specific analysis needs. Most simulators use discrete event simulation i.e. the modelling of systems in which state variables change at discrete points in time. The behavior of the network and the various applications and services it supports can then be observed in a test lab; various attributes of the environment can also be modified in a controlled manner to assess how the network / protocols would behave under different conditions. We have classified existing VANET simulation software into three different categories. They are (a) vehicular mobility generators, (b) network simulators, and (c) VANET simulators. This paper presents a comprehensive study and comparisons of the various publicly available VANET simulation software and their components and we see secure key exchange results w...
In order to provide stable connections among nodes, a routing protocol is necessary in VANET system. Dynamic topology and frequent disconnection makes difficult to design an efficient routing protocol for VANET to route information among nodes. The survey of routing protocols in VANET system helps in understanding the concepts of smart intelligent transport system (ITS). It is observed that carry-and-forward is the key consideration and main function of an efficient routing protocol in VANET system. This paper explains various routing protocols for VANET system.
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