Résolution de l'hétérogénéité des intergiciels d'un environnement ubiquitaire

Abstract : The advent and the phenomenal growth of low-cost, lightweight, portable computers concomitant with the advances in wireless networking technologies (eg.,WLAN,GPRS, UMTS) are making ubiquitous computing a reality. Devices from various application domains, e.g., home automation, consumer electronics, mobile and personal computing domains, need to dynamically interoperate irrespectively of the heterogeneity of their underlaying hardware and software. Middleware have been introduced in order to overcome this issue by specifying a reference interaction protocol enabling so compliant software systems to interoperate. However the emergence of different middleware to address requirements of specific application domains leads to a new heterogeneity issue among interaction protocol. Thus, at a given time and/or at a specific place, devices hosting the wrong middleware become isolated. First, this thesis investigates this issue by adopting an approach based on process algebras to reason on middleware heterogeneity in order to be independent of their underlaying technology. We provide a formal modelling of our solution that overcomes dynamically middleware interaction protocol mismatch using protocol conversion. Then, we introduce two systems implementing our formal model in order to overcome respectively the communication protocols mismatch and the service discovery protocols mismatch used by middleware. The introduced systems achieve interoperability among existing middleware without modifying them and their related applications. Finally, from our experimental results, the efficiency of our solution, both in terms of resource usage and latency, is reasonable.
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Yérom-David Bromberg. Résolution de l'hétérogénéité des intergiciels d'un environnement ubiquitaire. Informatique [cs]. Université de Versailles-Saint Quentin en Yvelines, 2006. Français. ⟨tel-00469445⟩

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