Enhanced Packet Scheduling Scheme with Quality of Service Support for WiMAX Networks
The Worldwide Interoperability for Microwave Access (WiMAX) is the IEEE 802.16 standard. Scheduling in WiMAX become one of the most challenging issues, since it is responsible for distributing available resources among users to meet the Quality of Service (QOS) criteria such as delay, delay jitter, fairness and throughput requirements. However, no specific scheduling mechanism has been defined to provide quality of service through five kinds of service class differentiation. In this paper, the authors propose a priority based packet scheduling scheme which support various services by considering the quality of service constraints of each class and this scheduling scheme uses a dynamic allocating priority queue that dynamically allocates priority for each packet and then adds fairness by implementing the weighted fair queuing algorithm on these queues.