Évaluation et amélioration des plates-formes logicielles pour réseaux de capteurs sans-fil, pour optimiser la qualité de service et l'énergie

Abstract : In the field of wireless sensors networks (WSN), specialized network stacks have been a very active research field for many years. However, most of this research, especially on lower layers of the network stacks, did not go beyond theory. Their implementations have generally not been the subject of deep or systematic effort, especially within the framework of dedicated operating systems. We thus propose, in this thesis, to focus on interaction analysis between lower layers’ protocols and dedicated software platforms, and to optimize them, especially at the implementation level. We first review and evaluate the various dedicated operating systems, and choose the one offering the necessary features to implement efficient and innovative MAC/RDC protocols. We then study, improve and optimize these lower layers of specialized stacks, and show, with an actual implementation of one of our advanced MAC/RDC protocols, that we can bring significant improvements in the quality of service (QoS) of WSNs, especially under heavy network traffic. We also report inaccuracies in Cooja/MSPSim simulations/emulations, and analyze the reliability issues caused by the use of this tool for performing evaluations (especially time-related) of WSNs. We finally propose some new leads for future enhancements and optimizations of the lower layers of these specialized network stacks, in order to further improve the liability, performances and energy consumption of WSNs.
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Kévin Roussel. Évaluation et amélioration des plates-formes logicielles pour réseaux de capteurs sans-fil, pour optimiser la qualité de service et l'énergie. Autre [cs.OH]. Université de Lorraine, 2016. Français. ⟨NNT : 2016LORR0051⟩. ⟨tel-01754653⟩

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