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Habilitation à diriger des recherches

Contribution aux protocoles et aux architectures de communication de bout en bout pour la QdS dans l'internet

Abstract : These latest years, the evolutions of computer science and telecommunications led to a radical modification of the communication landscape, and consequently of the Internet and its services: applications are now multimedia, multi users and co-operatives; networks now provide high transmission rates, at local scale or long distance, and make it possible to be connected to the Internet via various types of terminals and wire/wireless access points. In spite of these advances, the Internet communication services are still insufficient, in this way that they provide no guarantee on the performances, particularly as far as the end-to-end transit delay is concerned. This problem is targeted by our work, which addresses the need of new services, protocols and communication architectures for the Internet, aimed at providing end-to-end Quality of Service (QdS) guarantees. We start from a formal expression of the application needs, and lead to end-end solutions which try: (1) to integrate the considered levels (Application, Transport and IP); (2) to minimize resources utilization (band-width, buffer...); and (3) to abstract the application level from the choice and the configuration of the underlying services. Our contributions address three research topics: (1) the multimedia Transport services and protocols aimed at optimizing QdS in the Best Effort Internet; (2) the architectures providing guaranteed QdS, by coordinating the new services of the Internet at both Transport and IP levels (IntServ and DiffServ mono then multi domains); and (3) the signalling for QdS in a multi domains DiffServ Internet. Our research prospective concerns: (1) the signaling for QoS considering the heterogeneity of the multi domains Internet, and (2) the dynamic architecture and the configurable protocols to optimize the quality of the communication and the cooperation in the future ambient networks (mobile and ad hoc networks, sensors...) by taking into account the dynamicity of the context both at the user level (mobile and cooperating), and at the network level (mobile and with variable resources). null null
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Habilitation à diriger des recherches
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Submitted on : Tuesday, April 18, 2006 - 9:18:47 AM
Last modification on : Monday, October 19, 2020 - 11:12:55 AM
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  • HAL Id : tel-00012152, version 1


Christophe Chassot. Contribution aux protocoles et aux architectures de communication de bout en bout pour la QdS dans l'internet. Réseaux et télécommunications [cs.NI]. Institut National Polytechnique de Toulouse - INPT, 2005. ⟨tel-00012152⟩



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