QoS Differentiation Resource Allocation for Assured Forwarding Service in Differentiated Services Networks

Duc-Long PHAM
Tetsuya MIKI

IEICE TRANSACTIONS on Communications   Vol.E87-B    No.7    pp.1984-1992
Publication Date: 2004/07/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Network
differentiated services,  aggregated traffic,  QoS differentiation,  resource allocation,  end-to-end QoS,  

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Differentiated Services architecture provides a framework that enables relative differentiation of Assured Forwarding (AF) service. The differentiation is quantified by QoS parameters in terms of loss probability and maximum delay. We develop herein an efficient model to compute resource allocation in terms of buffer and service rate that satisfies the QoS differentiation between classes of service. To evaluate the performance of the proposed model, we conducted extensive simulation on both single-node and multi-node cases. The simulation studies show that the model can provide an efficient method to allocate network resources for aggregated traffic.