Comparative Assessments for Different WiMAX Scheduling Algorithms

WiMAX (Worldwide Interoperability for Microwave Access) is expected to arise as the main Broadband Wireless Access (BWA)technology providing voice, data and video services with different type of QoS (Quality of Service). Although different type of QoS classes had been defined by the IEEE 802.16 standard, the scheduling architecture is left to be vendor specific. Designing an efficient scheduling algorithm provide high throughput and minimum delay is challenging for system developers. In this work, a detailed simulation study was carried out for some scheduling algorithms such as WFQ, Round Robin, WRR and Strict-Priority, analyzing and evaluating the performance of each scheduler to support the different QoS classes. The simulation is carried out via the QualNet 4.5 simulator evaluation version and the results show that effective scheduling algorithm can provide high service standards to support the QoS required by different type of traffic as well as different type of user.