Adaptive Admission Control Algorithm in IEEE 802.16e Broadband Wireless Access Networks

The emerging IEEE 802.16e Broadband Wireless Access (BWA) network is one of the most promising solutions to provide ubiquitous wireless access with high data rates, high mobility, and wide coverage. In the paper we develop a novel Connection Admission Control (CAC) algorithm for IEEE 802.16e mobile BWA networks to simultaneously improve the utilization efficiency of network resources and guarantee Quality of Services (QoS) for handoff connections. The proposed CAC scheme dynamically adjusts the amount of reserved bandwidth for handoff users according to the arrival distributions of handoff and new coming connections. Simulation results demonstrate that the proposed CAC algorithm can increase the number of admitted connections and also provide handoff QoS.