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High Velocity Aware Clocks Synchronization Approach in Vehicular Ad Hoc Networks

Abstract : Clock synchronization plays an important role in communications organization between applications in Vehicular Ad hoc NETworks (VANETs) requiring a strong need for coordination. Having a global time reference or knowing the value of a physical clock (indeed with an acceptable approximation) of cooperative process involved in the provision of a service by distributed applications, takes on a fundamental importance in decentralized systems, particularly in VANETs. The intrinsic and constraining features of VANETs, especially the high mobility of vehicles make the clock synchronization mechanisms more complex and require a concise and a specific adequacy. The aim of the work reported in this paper is to propose a new protocol for clocks synchronization for VANETs, sufficiently robust, with a good precision, and convenient to the main constraint such high nodes mobility. Our proposed protocol, named Time Table Diffusion (TTD), was simulated using a combination of two simulators: VanetMobiSim and NS2 to evaluate its performance in terms of convergence time and number of messages generated. The obtained results were conclusive.
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Khedidja Medani, Makhlouf Aliouat, Zibouda Aliouat. High Velocity Aware Clocks Synchronization Approach in Vehicular Ad Hoc Networks. 5th International Conference on Computer Science and Its Applications (CIIA), May 2015, Saida, Algeria. pp.479-490, ⟨10.1007/978-3-319-19578-0_39⟩. ⟨hal-01789945⟩



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