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QoS provisioning for wireless IP networks with multiple classes through flexible fair queuing

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2 Author(s)
T. Janevski ; Inst. of Telecommun., Univ. Sv. Kiril i Metodij, Skopje, Macedonia ; B. Spasenovski

We propose a scheduling algorithm, a wireless class-based flexible fair queuing (WCFQ), to support QoS demands of different traffic classes and at time varying error rates in wireless IP networks. It uses priorities to distinguish between best-effort class and class with guaranteed bandwidth, which is further divided into CBR, VBR and guaranteed best-effort subclasses. WFQ is applied within each class/subclass in an error-free state. During error-state, CBR flows receive their guaranteed service rate until a predefined limit is reached by weight adjustment. The algorithm swaps portion of bandwidth between erroneous and error-free best-effort flows that leads to their maximized throughput over long time scales

Published in:

Global Telecommunications Conference, 2000. GLOBECOM '00. IEEE  (Volume:3 )

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