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Allocation dynamique des ressources et gestion de la qualité de service dans la virtualisation des réseaux

Abstract : Internet has been successful in the recent years. The critical infrastructure of the internet has become stagnant due to the absence of changes in the core networks and stiffness of deployed equipment. It has become difficult and expensive to deploy new network services. Network virtualization is a new paradigm to overcome this problem. In this thesis, we present network virtualization and Software Defined Networking (SDN) as a solution that can be used by service providers. It enables them to provide new services to users through virtual networks (VNs) with better quality of service while optimizing the use of physical network resources. Firstly, we demonstrate the potential of SDN in the QoS management of a virtualized home network (VN). We propose and implement ''FlowQoS'', a mechanism that can be deployed by an Internet Service Provider in the last-mile hop or in the home gateway. Performance measurements show that this solution can share bandwidth between applications according to user-defined configuration to guarantee QoS for each active traffic. The second contribution is modeling the interaction between service providers and infrastructure providers using game theoretic framework to offer dynamic sharing of physical infrastructure across multiple VN with different QoS requirements. We present a set of non-cooperative games to model the negotiation phase and the dynamic allocation of nodes and physical links for each deployed VN. Finally we focus on a predictive approach that allows an adaptive control of bandwidth allocation in order to reduce the packet delays for a given VN on each physical link. The last two contributions offer dynamic sharing models of physical infrastructure resources while guaranteeing the QoS for each VN
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Submitted on : Thursday, March 29, 2018 - 1:20:18 PM
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Mohamed Said Seddiki. Allocation dynamique des ressources et gestion de la qualité de service dans la virtualisation des réseaux. Autre [cs.OH]. Université de Lorraine, 2015. Français. ⟨NNT : 2015LORR0031⟩. ⟨tel-01751485v1⟩



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