Performance Comparison of Scheduling Algorithms for Real-Time Applications over WiMAX Networks

WiMAX (Worldwide Interoperability for Microwave Access) is an emerging broadband wireless network for providing Last-mile problem solutions for supporting higher bandwidth and many service classes with dissimilar quality of service requirement. Real-time applications are widely implemented over the Internet. So the Internet needs a network access with strong support for these applications. There is an emerging broadband wireless access network, namely, WiMAX networks. WiMAX has efficient and reliable quality of service (QoS) architecture which can acheive the real-time applications requairements. A powerful scheduling algorithm is essential in WiMAX to fulfill the growth of using dissimilar applications. Video conferencing and high quality video are the most popular real-time applications. In this paper, we introduce performance comparison of some uplink scheduling algorithms to measure the enhancement of real-time applications performance. One of the algorithms conssidered is our proposal. Delay and jitter of applications are used as performance metrics. The results show that the proposed algorithm outperforms the other algorithms considered with respect to delay and jitter of real-time applications.