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QoS performance analysis for VoIP traffic in heterogeneous networks with WiMAX access

QoS performance analysis for VoIP traffic in heterogeneous networks with WiMAX access,Abdul Haseeb,Velio Tralli

QoS performance analysis for VoIP traffic in heterogeneous networks with WiMAX access  
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Designing a heterogeneous network including systems providing different QoS, such as the emerging WiMAX, is a difficult task. The integration of a WiMAX access system with Differentiated Services (DiffServ) enhances the overall performance of the network. This paper investigates the interworking between WiMAX and DiffServ networks, by measuring one-way delay, jitter and packet drop rate of VoIP traffic from WiMAX users in a test-bed scenario with and without DiffServ. It is shown that DiffServ in the core network solves the congestion problem in efficient way by providing service priority to delay-sensitive traffic. The results show valuable gains using DiffServ network.
Published in 2011.
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