Queue based scheduling for IEEE 802.16 wireless broadband

IEEE 802.16 Wireless Broadband is a promising technology for providing last mile access. Quality of Service (QoS) is an important factor that has been addressed by the standard which defines four types of multimedia traffic classes. However resource allocation and scheduling between the traffic classes is vital in providing QoS which the standard has left undefined. In this paper we propose a queue based scheduling algorithm for real time and non real time traffic at the Medium Access Control (MAC) layer. The algorithm is based on resource sharing between real time and non real time traffic depending on their queue size and latency requirements. We have simulated various traffic scenarios by implementing the algorithm in QualNet WiMAX simulator and studied its performance.