Efficient Quality of Service scheduling mechanism for WiMAX networks

Authors:
Shih-Jung Wu;Shih-Yi Huang;Kuo-Feng Huang
Affiliations:
Department of Innovative Information and Technology, Tamkang University, 180 Linwei Road, Chiao-hsi Shiang, I-lan County 26247, Taiwan, ROC;Department of Computer Science and Information Engineering, Tamkang University, 151 Ying-chuan Road, Tamsui, Taipei County 25137, Taiwan, ROC;Department of Computer and Communication Engineering, Taipei College of Maritime Technology, 150 Sec. 3, Binhai Rd., Tamsui, Taipei County 25172, Taiwan, ROC
Venue:
Computer Communications
Year:
2012

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Abstract

Supporting Quality of Service (QoS) guarantees for diverse multimedia services are the primary concerns for WiMAX (IEEE802.16) networks. A scheduling scheme that satisfies the QoS requirements has become more important for wireless communications. We propose a scheduling scheme called adaptive priority-based scheduling (APS) for providing QoS guarantees in IEEE 802.16 networks. APS comprises two major components: priority assignment and resource allocation. Different service-type connections primarily depend on their QoS requirements to adjust priority assignments and dispatch bandwidth resources dynamically. We consider both starvation avoidance and resource management. Simulation results show that our APS methodology outperforms the representative scheduling approaches in both QoS satisfaction and maintains fairness in starvation prevention.