123456789 Essay

9906 WordsApr 7, 201440 Pages
IEEE TRANSACTIONS ON MOBILE COMPUTING, VOL. 10, NO. 1, JANUARY 2011 3 Bidirectionally Coupled Network and Road Traffic Simulation for Improved IVC Analysis Christoph Sommer, Student Member, IEEE, Reinhard German, and Falko Dressler, Senior Member, IEEE Abstract—Recently, many efforts have been made to develop more efficient Inter-Vehicle Communication (IVC) protocols for ondemand route planning according to observed traffic congestion or incidents, as well as for safety applications. Because practical experiments are often not feasible, simulation of network protocol behavior in Vehicular Ad Hoc Network (VANET) scenarios is strongly demanded for evaluating the applicability of developed network protocols. In this work, we discuss the need for bidirectional coupling of network simulation and road traffic microsimulation for evaluating IVC protocols. As the selection of a mobility model influences the outcome of simulations to a great extent, the use of a representative model is necessary for producing meaningful evaluation results. Based on these observations, we developed the hybrid simulation framework Veins (Vehicles in Network Simulation), composed of the network simulator OMNeT++ and the road traffic simulator SUMO. In a proof-of-concept study, we demonstrate its advantages and the need for bidirectionally coupled simulation based on the evaluation of two protocols for incident warning over VANETs. With our developed methodology, we can advance the state-of-the-art in performance evaluation of IVC and provide means to evaluate developed protocols more accurately. Index Terms—Inter-Vehicle Communication, Vehicular Ad Hoc Network, road traffic simulation, network simulation, Veins. Ç 1 INTRODUCTION When these road traffic simulators are employed in VANET simulations, traces are commonly generated offline to speed up network simulation

More about 123456789 Essay

Open Document