IEEE/ACM Transactions on Networking (TON)
Efficient fair queueing using deficit round-robin
IEEE/ACM Transactions on Networking (TON)
Performance Evaluation of the IEEE 802.16 MAC for QoS Support
IEEE Transactions on Mobile Computing
An overview of scheduling algorithms in wireless multimedia networks
IEEE Wireless Communications
Modeling and evaluating IPTV applications in WiMAX networks
Multimedia Tools and Applications
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One of the fundamental requirements for IEEE 802.16/WiMAX to become a key technology for high-speed multimedia service delivery is QoS differentiation. Although the IEEE 802.16 standard gives some guidelines to design a QoS architecture to support multimedia services, implementation details are left to manufacturers. This paper reports on the design and analysis of a channel-aware Deficit Round Robin (DRR) based scheduling algorithm for downlink traffic delivery in a point-to-multipoint WiMAX network. A technique for compensation of channel errors is proposed to preserve QoS differentiation and fairness under non-ideal channel conditions. Simulations confirm effectiveness of the compensation technique under different channel conditions and network loads.