Option : Réseaux et Systèmes distribués

Abstract

Over the last decades, advancements in computing, electronics, and mechanical systems have been resulting in the development of transportation all over the world, which has been providing a lot of benefts for many aspects of human life. Intelligent Transportation Systems (ITSs) are advanced applications that aim to make the transportation infrastructures safer, more convenient, and smarter by using information that is shared among vehicles such as crash warning, sudden-brake warning, lane-change warning, and so on. Thus, such systems provide a wide variety of services including, but not limited to, trafc control, trafc management, passenger and road safety, and remote region connectivity. However, several challenges hampering the proper operation of these systems, such as extreme disturbances and they rely on several kinds of devices that can cause malfunctions. Moreover, vehicular communications are expected to be subject to severe breaches that a?ect the reliability of the exchanged information. Seeking to improve the safety and protect human life, in this thesis, we address these problems by providing improvements to the existing STIs. In particular, we have proposed an enhanced train-centric communication-based train control system for railway transportation that allows improving the quality and enhancing reliability of the train control. Moreover, we have proposed our second contribution that manifests itself in the proposition of a discordant safety messages detection strategy in connected vehicles environment that provides the vehicles with the ability to quickly and preemptively identify discordant messages and hence dealing against potential disturbances, while ensuring a trade-o? between the efciency and safety. The proposed mechanisms are evaluated through simulations in terms of important metrics. The obtained results highlight the promising performances of our proposals.