Search results for "ARCHITECTURE"
showing 10 items of 3706 documents
Hybrid QoS Based Routing for IEEE 802.16j Mesh Infrastructure
2014
Acceptance rate: 29%; International audience; With the growth of wireless networks, Wireless Mesh Network (WMN) has appeared as an emerging key solution for broadband Internet access with a low-cost deployment. Moreover, providing QoS guarantees for real-time and streaming applications such as VoIP (Voice over IP) and VoD (Video on Demand) is a challenging issue in such environment. In this paper, we propose a hybrid wireless mesh architecture to provide mesh clients with Internet access while guaranteeing QoS. It is formed by an IEEE 802.16j based infrastructure and several IEEE 802.11s based client domains. A lustering algorithm is developed to enhance scalability issues within the mesh i…
De l'existence d'arbres couvrants complètement disjoints dans les réseaux sans fil
2018
International audience; Les arbres couvrants complètement disjoints (CIST) présentent un réel intérêt dans les réseaux, aussi bien pour des opérations d'augmentation de robustesse que d'équilibrage de charge, de fractionnement du trafic, ...Leur étude théorique a montré de nombreux challenges liés à leur calcul et leur quantification. Nous proposons ici une formulation ILP originale et montrons par des résultats de simulation sur des modèles représentatifs des réseaux sans fil que plusieurs CIST peuvent être calculés lorsque la densité du réseau est suffisamment élevée. Nous montrons que dans ce type de réseaux, la densité et le nombre de noeuds sont proportionnels au nombre de CIST qui peu…
SECURE SOLUTION FOR MODERN SEMANTIC SCADA
2013
International audience; NOUS TRAVAILLONS SUR LA SECURITE DES SYSTEMES SCADA (SUPERVI-SORY CONTROL AND DATA AQUISITION) MODERNE EXPLOITANT DES EQUI-PEMENTS MODRNE AVEC DE L’INTELLIGENCE EMBARQUE COMME LES RTU (REMOTE TERMINAL UNIT), LES CAPTEURSINTELLIGENTS, LES ACTIONNEURS INTELLIGENTS, LES EQUIPEMENTS DE L’INSTRUMENTATION GAZIERE MODERNE COMME LES COMPTEURS NUME-RIQUE, LES CORECTEURS ELECTONIQUE, LES POMPES DOSEUSES AVEC CARTE ELECTRONIQUE, LES CHROMATOGRAPHES...ECT. AVEC LES AVANCES TECHNLOGIQUES DE L’INFORMATIQUE EMBARQUE COMME LES SERVICES WEB ET LES APPLICATION CONCU SELON LES ARCHITECTURES MODERNE (SOA- SERVICE ORIENTED ARCHITECTURE), LES ONTOLOGIES ET LE WEB SEMANTIQUE, LES BASES DE …
Methods for registering a mobile terminal by means of an ip network access router, for managing the mobility of a terminal in an ip network, and for …
2011
The invention relates to methods for registering a mobile terminal by means of an IP network access router, for managing the mobility of a terminal in an IP network, and for configuring a mobile terminal. The invention proposes to assign a multicast group identifier solely to an IP network mobile terminal. Said multicast group identifier enables the creation of: a multicast address that acts a regional temporary IP address of the mobile terminal and is registered with the home agent thereof; and a multicast tree that associated with the multicast address to which the access routers of a remote network, visited by the terminal, subscribe in order to receive the data packets intended for the …
SECURE PROTOCOL FOR MODERN SCADA
2013
International audience
A Global Service Level Guarantee in NGN NetworksA Global Service Level Guarantee in NGN Networks
2010
International audience
SECURITY FOR INDUSTRIAL AUTOMATION AND CONTROL SYSTEMS
2013
International audience
Routage Hybride basé sur la QoS pour une infrastructure IEEE 802.16j maillé sans fil
2014
International audience
Gestion autonome des communications dans les réseaux ad hoc de véhicules : cas de la diffusion
2013
National audience
Smart Network Selection and Packet Loss Improvement during Handover in Heterogeneous Environment
2013
BEST PAPER AWARD; International audience; Seamless Handover between networks in heterogeneous environment is essential to guarantee end-to-end QoS for mobile users. A key requirement is the ability to select the next best network. Currently, the implementation of the IEEE 802.21 standard by National Institute of Standards and Technology (NIST) considers only the signal strength as a parameter to determine the best network. In this paper, we propose including additional parameters such as available bandwidth, mobile node speed and type of network during selecting a new network to improve the QoS for mobile user's application. The results of the experiments that we performed using Network Sim…