A proposed RED-based scheduling scheme for QoS in WiMAX networks

Authors:
Po-Chun Ting;Chia-Yu Yu;Naveen Chilamkurti;Wang Tung-Hsien;Ce-Kuen Shieh
Affiliations:
Institute of Computer Communication Engineering and Department of Electrical Engineering, National Cheng Kung University, Taiwan;Institute of Computer Communication Engineering and Department of Electrical Engineering, National Cheng Kung University, Taiwan;Dept. of Computer Science and Computer Engineering, La Trobe University, Melbourne, Australia; ;Institute of Computer Communication Engineering and Department of Electrical Engineering, National Cheng Kung University, Taiwan
Venue:
ISWPC'09 Proceedings of the 4th international conference on Wireless pervasive computing
Year:
2009

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Content-Aware Resource Allocation and Packet Scheduling for Video Transmission over Wireless Networks

IEEE Journal on Selected Areas in Communications

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Abstract

IEEE 802.16 standard defines the broadband wireless access specification for WiMAX, but it did not specify a standard scheme for scheduling algorithms and admission control. As a result, we propose an uplink scheduling scheme called Random Early Detection based Deficit Fair Priority Queue (RED-based DFPQ) for WiMAX. RED-based DFPQ adjusts the deficit counter of rtPS based on the current queue length. Our proposed scheme improves the transmission quality of rtPS traffic in WiMAX networks. Our simulation results show that RED-based DFPQ enhances the throughput of rtPS, reduces the delay of rtPS and avoids the starvation of lower priority service classes when compared with other scheduling schemes.