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Vers les réseaux véhiculaires (VANET) programmables grâce à la technologie SDN (Software Defined network)

Soufian Toufga 1
1 LAAS-SARA - Équipe Services et Architectures pour Réseaux Avancés
LAAS - Laboratoire d'analyse et d'architecture des systèmes
Abstract : The concept of the vehicle network, which initially advocated essentially vehicle-to-vehicle communications, is opening up to other types of communications involving vehicles and infrastructure (network), cloud or pedestrian, etc. in order to be able to meet the needs of the wide variety of new applications envisaged within the framework of the Intelligent Transportation System (ITS). The multitude of access network technologies, the very high mobility of vehicles and their high density in urban areas, and the predominance of wireless communications make it a heterogeneous network, with very dynamic characteristics, some of which are difficult to predict, and subject to problems of scale. Faced with these difficulties, one avenue being considered by the scientific community is to apply the SDN (Software Defined Network) paradigm to vehicular networks as a means of, on the one hand, enabling the hybridisation and unification of the control of the various access network technologies and, on the other hand, taking advantage of the centralised view of the network and contextual data from the cloud to develop new control algorithms that can potentially rely on the prediction/estimation of the state of the network and thus anticipate certain control decisions. It is therefore within this framework that this thesis work is being carried out, the contributions of which aim to develop the concept of SDVN (Software Defined Vehicular Network) software defined vehicle networks. Four contributions are developed. The first one specifies the architecture of a hybrid SDN vehicle network capable of meeting the challenges described above. This architecture is complemented by a solution for placing SDN controllers. We propose a dynamic approach capable of adjusting the optimal placement of controllers according to changes in the network topology due to traffic fluctuations. This work also addresses the problem of the overall network vision that an SDN controller can build up, which is the prior vision and cornerstone of any network control function. To this problem, we propose amendments and extensions to the "de facto" topology discovery service designed for wired networks to adapt it to the vehicle context. As a complement to the discovery service, we also offer a topology estimation service based on Machine Learning techniques to provide network control functions with a potential vision of the future state of the network and thus open them up to proactive and intelligent network control.
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https://hal.laas.fr/tel-03018618
Contributor : Laas Hal-Laas <>
Submitted on : Monday, November 23, 2020 - 7:56:37 AM
Last modification on : Wednesday, November 25, 2020 - 3:30:44 AM
Long-term archiving on: : Wednesday, February 24, 2021 - 6:18:18 PM

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  • HAL Id : tel-03018618, version 1

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Soufian Toufga. Vers les réseaux véhiculaires (VANET) programmables grâce à la technologie SDN (Software Defined network). Réseaux et télécommunications [cs.NI]. Université Toulouse 3 Paul Sabatier (UT3 Paul Sabatier), 2020. Français. ⟨NNT : 2020TOU30128⟩. ⟨tel-03018618⟩

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