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Etude de la QoS dans les réseaux ad hoc : intégration du concept de l'ingénierie du trafic

Abstract : The wireless networks are an even more emergent technology allowing the users access to information
and electronic services regardless of their locations. The success of this type of networks is due to a
great interest of the users, as well as the business and industrial world. Moreover, the rates currently
reached with wireless networks make it possible to transfer multimedia flows subjected to important
constraints. Thus, it has become paramount to respect certain constraints such as bandwidth, delay
or packet loss. However, the solutions which were introduced into hard-wired networks have become
unsuitable for networks using a shared radio medium without a centralized administration.
In this respect, several works concerning the study of the quality of service (QoS) in wireless networks
and in particular ad hoc networks were carried out in order to define QoS models, medium access
protocols, QoS routing protocols and signalling protocols. Therefore, our prime objective was the
study of the various mechanisms of QoS. Thus, this work is placed in the framework of the QoS
concept and the proposal of mechanisms making it possible to offer optimal solutions to applications
sensitive to certain factors of QoS. The other contribution of this work lies in the integration of the
concept of traffic engineering in the ad hoc networks. Indeed, this concept has enabled us to propose
some mechanisms offering differentiated services in order to ensure QoS in these networks. In the
same way, we have proposed new scheduling mechanisms in order to manage the various types of
flows travelling on the MAC layer of the standard IEEE 802.11. Finally, the last contribution was
the proposal of solutions for load balancing and traffic engineering as well as the validation of the
various results through simulations and mathematical evidences.
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Contributor : Mohamed Brahma <>
Submitted on : Tuesday, February 20, 2007 - 12:34:52 PM
Last modification on : Wednesday, July 22, 2020 - 4:04:02 PM
Long-term archiving on: : Friday, September 21, 2012 - 11:36:12 AM


  • HAL Id : tel-00132114, version 1



Mohamed Brahma. Etude de la QoS dans les réseaux ad hoc : intégration du concept de l'ingénierie du trafic. Réseaux et télécommunications [cs.NI]. Université de Haute Alsace - Mulhouse, 2006. Français. ⟨tel-00132114⟩



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