Gestion de la qualite de service dans les systemes mobiles de prochaines generations.

摘要

This thesis aims at conceiving a protocol to manage the reservation of the resources in an environment based on IP, by holding account of the specific characteristics of the traffic in the next generation mobile systems. More specifically, we aim at analyzing existing resource reservation protocols. In the second time, we propose a protocol to reserve the resources of the mobile units by guaranteeing the scalability, the interworking, the security and the preservation of radio resources. In the third time, we propose a protocol to reserve the resources of the mobile units by minimizing the interruption of quality of service during handover and by guaranteeing the reservation of resources along the multipaths. Finally, we will validate and test the performances of these two protocols holding account the intrinsic characteristics of the next generation mobile systems based on IP.; For that purpose, we have initially list the various existing quality of service paradigms. Then, we evaluated each one of these paradigms compared to the performance parameters, in this case, the mobility, the security, the interworking and the scalability. We also made a selective review of certain implementations of these paradigms. Following this evaluation, we listed the advantages and the disadvantages of each paradigm. Thereafter, we defined a set of resource reservation mechanisms holding account of performance parameters quoted above. Finally, we studied the proposed protocol performances using a formal validation tool to check transitory state properties and then we carried out a performance analysis depending on quality of service metrics to check the viability of the proposed model.; The principal contributions of this thesis are the analysis of the resource reservation methods according to the adequacy of these mechanisms to the mobile environments, the security, the resource management and the scalability. They also include the initial resource reservation mechanism in an IP environment guaranteeing the interworking and the security of the network communication entities, the resource reservation modification mechanism on an ongoing session, the refresh reservation mechanism of the temporary states controlled by the network and finally the resource reservation mechanism during an handover controlled by the network and integrated in the handover procedure. (Abstract shortened by UMI.)