Gestion des réseaux 802.11
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Gr�ce � leur d�veloppement continu, les r�seaux locaux sans fils 802.11 (WiFi) sont devenus tr�s largement utilis�s, sp�cialement dans des environnements multiservices. Cependant, ils pr�sentent de nombreux inconv�nients, essentiellement au niveau du partage des ressources entre les diff�rents utilisateurs, ainsi qu''au niveau de la s�curit� qui reste tr�s limit�e. Ce livre traite ces deux questions et pr�sentent des travaux de recherches contribuant � l''am�lioration de la gestion des flux transmis dans des environnements 802.11. Ces travaux s''articulent autour de deux axes. Le premier porte sur le d�veloppement de nouvelles politiques d''allocation de ressources permettant, d''une part, d''avoir une gestion plus optimale de la bande passante et de rem�dier, aussi, � l''anomalie 802.11. L''originalit� de ces contributions est de renoncer au paradigme classique d''isolation des couches, par une approche int�gr�e ou 'Cross-Layer''. Le second ayant pour objectif de s�curiser la transmission des flux dans ces r�seaux, sp�cialement en mode ad hoc, car il est bien plus complexe que le mode infrastructure. L''aspect de s�curit� trait� en priorit� est la confidentialit�.
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