期刊名称：International Journal of Computer Science & Technology
印刷版ISSN：2229-4333
电子版ISSN：0976-8491
出版年度：2011
卷号：2
期号：3
出版社：Ayushmaan Technologies
摘要：The demand for high-speed broadband wireless systems is increasing rapidly and is fuelled by demand for bandwidth intensive applications like audio and video streaming. IEEE 802.16 based Wimax (Worldwide Interoperability for Microwave Access) is expected to emerge as major player as Broadband Wireless Access (BWA) technology providing voice, data and video services with different type of QoS (Quality of Service). Selection of proper Scheduling algorithm is crucial component in QoS provisioning over such broadband wireless access (BWA) network. The ideal scheduling algorithm is expected to have a multi-dimensional objective of satisfying QoS requirements of the users, maximizing system utilization and ensuring fairness among the users. From service provider point of view, the scheduling algorithms help in achieving efficient utilization of scarce radio resources. In this work, a comprehensive performance study of scheduling algorithms in Point to Multipoint mode of Wimax network has been conducted. A detailed simulation has been carried out for the major scheduling algorithms such as FIFO, WFQ, Priority Queue, DWRR and MDRR and evaluating the performance of each scheduler to support the different QoS classes. The simulation results show that properly chosen scheduling algorithm can provide high service standards to support the QoS required for different type of traffics and users.
