MODULATION AWARE CONNECTION ADMISSIONCONTROL AND UPLINK SCHEDULING ALGORITHM FORWIMAX NETWORKS

摘要

Mobile WiMAX standard defines air interface for mobile broadband wireless access (BWA) systems andaimed to provide high data rate with seamless mobility while maintaining the quality of service (QoS).However, QoS of real-time applications depends on the link quality, which necessitate the channel-awareconnection admission control (CAC) and scheduling schemes. In this paper Modulation aware CACscheme and base station (BS) uplink scheduling algorithm are proposed to improve the system capacity andQoS performance respectively. The proposed CAC scheme aims to increase the admission of higher priorityreal time services by degrading the bandwidth of admitted lower priority connections on the basis of theirchannel status without deteriorating their QoS performance much. The performances of proposedalgorithms are evaluated through simulation by considering the metrics like throughput, delay and numberof connections admitted.