The work presented in this thesis is divided into two parts centered around routing. First, we focus on multi-criteria path computations, which are particularly useful for routing traffic requiring low latency. The NP-hard problem studied, called DCLC, becomes radically more complex when we consider the operational constraints added by the technolo...
Body Sensor Networks (BSNs) are formed of medical sensors that gather physiological and activity data from the human body and its environment, and send them wirelessly to a personal device like Personal Digital Assistant (PDA) or a smartphone that acts as a gateway to health care. Collaborative Body Sensor Networks (CBSNs) are collection of BSNs th...
L'objectif de cette thèse est la mise au point de nouveaux mécanismes pour améliorer la qualité de service des réseaux LPWAN dans le contexte des Villes Intelligentes. Dans un premier temps, nous analysons l'évolution de la qualité de service en observant le taux de paquets erronés (PER) de la couche MAC de différents standards LPWAN, soumise la de...
Video streaming is the dominant contributor of today’s Internet traffic. Consequently, estimating Quality of Experience (QoE) for video streaming is of paramount importance for network operators. The QoE of video streaming is directly dependent on the network conditions (e.g., bandwidth, delay, packet loss rate) referred to as the network Quality o...
The emergence of Network Function Virtualization (NFV) technology has aroused keen interest to design, manage and deploy network services in a flexible, automated and vendor-agnostic manner. Implementing NFV technology is expected to be a win-win solution for both service providers and costumers. However, this paradigm shift, sparked by NFV, calls ...
Nous utilisons et manipulons aujourd’hui quotidiennement des documents multimédias qui sont omniprésents n’importe où et à partir de n'importe quel terminal (e.g., ordinateurs, Smartphone, Smart Watch, Smart Glasses, etc.). Nos situations d’usages et la variété des périphériques que nous utilisons requièrent leur adaptation afin d'améliorer leur vi...
International audience
L’intérêt croissant de la communauté scientifique et industrielle ces dernières années pour les réseaux de capteurs sans fil (RCSF), a conduit à la définition de nouveaux protocoles normalisés prenant en compte les spécificités matérielles des nœuds utilisés. Dans la couche réseau, le protocole RPL (de l’acronyme anglais IPv6 Routing Protocol for L...
In recent years, the network traffic requiring Quality of Service (QoS) has been growing explosively. In this thesis, we study the multi-constrained QoS routing in networks. The objective is to find routes in wired and wireless networks taking into account constraints related to the QoS and minimizing the cost of the communication. We present sever...
The number of real-time Over-The-Top (OTT) communication services has increased in the recent years. OTT solutions use the best-effort Internet delivery and rely on mechanisms built into the endpoints to adapt to underlying network fluctuations. Nevertheless, it is questionable if this approach is enough to provide acceptable quality of communicati...
