QoS Bandwidth Optimization in an Inductive Routing System for Multimedia Real‐Time Applications

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QoS‐Based Adaptive Approaches

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A Multi‐criteria Master Nodes Selection Mechanism for Knowledge Dissemination In Autonomic Networks

Autonomic Networks represent a concept inspired by the biological world that aims at making a network independent of any human monitoring. To reach such autonomy, knowledge should be disseminated over the network, which remains an open problem. In fact, disseminating the knowledgeover all nodes leads to a big overhead. That is why we need to select a subset of nodes in charge of knowledge management. A single criterion-based selection mechanism has been proposed in a previous work but such a mechanism seems to be very simplistic. In this paper, we present a new multi-criteria selection mechanism based on Pareto. The simulation results show that, over all the selected criteria, the new approach significantly improves performances

An Open Source Platform for Perceived Video Quality Evaluation

International audienceTo ensure the best multimedia service quality in order to well address users ' expectations , a new concept named Quality of Experience (QoE) has appeared . Two methods can be used to evaluate the user satisfaction , a subjective one and an objective one . The subjective approach is based on measured real data . The problem is there is no dataset large enough and can be used to well evaluate the QoE . In this , work we present our approach to build a data set for subjective evaluation based on a categorization approach and open source software

La perception de l’usager comme paramètre pilote dans le routage inductif des applications temps réel au sein d’un réseau opérateur

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Un routage inductif pour une meilleure garantie de service dans les réseaux de communication

International audienceLa nature des flux circulant sur le reseau et la constante progression des besoins des utilisateurs induisent de maniere in- trinseque un trafic tres variable se caracterisant de plus en plus par des anomalies ayant pour consequence des changements detats imprevisibles dans le reseau. Lintegration de ce nouveau phenomene dans les politiques de decision afin de repondre au mieux aux aspects lies a la qualite de service constitue un vaste sujet de recherche et a fait lobjet de nombreuses techniques proposees dans la litterature. Lobjectif de cet article est de proposer une approche modulaire lexicographique permettant de faire une optimisation combinee de criteres statiques et dynamiques appliquee a la problematique du routage adaptatif dans un reseau de communication a trafic irregulier. La politique de routage developpee dans cet article s'appuie sur la technique de routage multi-chemins combinee avec un algorithme adaptatif de type Q-learning. Dans la partie experimentation, nous analysons puis comparons les performances de l'approche proposee a celles des algorithmes plus classiques bases sur la recherche des plus courts chemins

An Evidential Approach for Network Interface Selection in Heterogeneous Wireless Networks

International audienceWhen several networks (e.g., Wi-Fi, UMTS, and LTE) cover the same region, the mobile terminals that are equipped with multiple network interfaces provide the possibility for mobile end-users to select their believed best network. This is known as the network selection problem, which is a decision making problem with multiple criteria (network conditions, service requirements, terminal characteristics, and user needs). Many network selection solutions using different mathematical theories have been proposed in the literature to allow the best connectivity for applications, users, and terminals. Unfortunately, most approaches for the network selection do not make effective selection decisions, since they are vulnerable to the uncertainty and imprecision related to network state information. In this paper, we investigate the belief functions theory to devise an efficient lightweight uncertainty- aware network interface selection scheme. We provide analytical studies and simulation experiments to demonstrate the efficiency of the proposed solution

Quality of Experience for Multimedia

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Q-routing: from the algorithm to the routing protocol

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Wired/Wireless Internet Communications : Proceedings of the 12th International Conference, WWIC 2014, Paris, France, May 26-28, 2014

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