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Fairness-based scheduling algorithm for time division duplex mode IEEE 802.16 broadband wireless access systems

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3 Author(s)
Cheng, S.-T. ; Dept. of Comput. Sci. & Inf. Eng., National Cheng Kung Univ., Tainan, Taiwan ; Hsieh, M.-T. ; Chen, B.F.

IEEE 802.16 broadband wireless access standard specifies four types of services to satisfy the quality of service (QoS) requirements of multimedia applications. How to design a scheduling algorithm is an open issue. Manufacturers can implement their own efficient scheduling algorithm depending on their requirement. There are a lot of scheduling algorithms that have been proposed. No matter these scheduling algorithms propose a hierarchical structure with strict priority or one-level scheduling mechanism, which is based conceptually on the round-robin approach, they do not consider an important factor: fair. The authors introduce a fair strategy algorithm for IEEE 802.16 broadband wireless access standard. The proposed algorithm applies a fair strategy to utilise the system bandwidth, achieve the QoS requirements of high-priority service flows and reduce starvations of low-priority service flows. The simulation studies show that the proposed scheduling algorithm provides a flexible way to utilise the system bandwidth.

Published in:

Communications, IET  (Volume:4 ,  Issue: 9 )