Th`ese de Doctorat de l'université Paris VI Pierre et Marie Curie Mlle ...

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Total Accepted Load (Mb/s) 12 11 10 9 8 7 6 5 4 3 2 1 Static Provisioning SDBA IDBA OBA 5 6 7 8 9 10 Average Offered Load (Mb/s) Figure 7.21: Average total accepted load in the complex core network of Figure 7.20 versus the average offered load Network Extra−Revenue 4 3.5 3 2.5 2 1.5 1 0.5 0 Static Provisioning SDBA IDBA OBA 5 6 7 8 9 10 Average Offered Load (Mb/s) Figure 7.22: Average network extra-revenue in the complex core network of Figure 7.20 versus the average offered load 74
Chapter 8 Performance Upper Bound The Ideal Bandwidth Allocation model (IBA) allows to optimize the total network revenue and provides bounds to the performance achievable by any online dynamic bandwidth allocation algorithm. Such model requires the knowledge of the future traffic offered to the network, the arrival time, the duration and the transmission rate of each connection offered to the network. We implemented and solved the IBA model considering the same network scenarios and simulation tools described in the previous Chapter. This Chapter provides a discussion on the numerical results obtained with IBA. These results show that the proposed dynamic bandwidth allocation algorithms approach, in several scenarios, the ideal performance provided by IBA. 8.1 Simulation results We first considered the single-bottleneck topology illustrated in Figure 8.1(a). All traffic sources and parameters are the same as used in the previous Chapter for all network scenarios. Figures 8.1(b) and 8.1(c) show, respectively, the average total load accepted in the network and the corresponding total extra-revenue as a function of the load offered to 75
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Thèse de Doctorat de l’universit
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To my family.
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Abstract Efficient dynamic resource
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Acknowledgements I would like to th
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4.2 Connections Classification . .
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Résumé delaThèse 1. La probléma
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supérieure sur les performances qu
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compte les fonctions d’utilité d
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(Policy Decision Point), d’un ens
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ligne pour individualiser la bande
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6. Nous proposons trois algorithmes
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appelons débit de crête. Six sour
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6. Conclusion générale et Perspec
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Chapter 1 Introduction The Internet
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upper bounds to the performance ach
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Chapter 2 Dynamic Bandwidth Allocat
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