A Real Time Adaptive Scheduling Scheme for Multi-Service Flows in WiMAX Networks

In this paper we propose an efficient multi-service scheduling scheme called real-time adaptive scheduler (RTAS) for WiMAX service classes. It is based on deficit round robin with an adaptive quantum according to the QoS requirement of each considered service. Our scheduler assures fairness between the different class of services on either uplink or downlink TDD frame. Simulation results show the achieved fairness and the adaptation with real-time characteristics of data traffic.