WLC17-1: Performance Analysis of a Reservation Based Connection Admission Scheme in 802.16 Networks

There is an increasingly growing interest in the IEEE 802.16 owing to its unique and useful characteristics in offering broadband wireless access. One of the key strengths is its support for different quality of service (QoS) classes which positions it to support high-quality voice, video, and data services. Connection admission control (CAC) plays an important role in fulfilling service differentiation and QoS satisfaction defined in IEEE 802.16 Std.. A traditional CAC scheme, known as complete sharing, is expected unable to explore the maximum advantage in using the IEEE 802.16 networks since it does not take the priority of different service classes into account. In this paper, a reservation based CAC scheme is introduced. By considering the service differentiation defined in the IEEE 802.16 networks, the proposed scheme can provide significantly lower connection block probabilities for higher priority services, which leads to better revenue. We analyze the proposed scheme in terms of some importance performance metrics, such as connection block probability for different service classes, bandwidth utilization, and the revenue generated at the BS. The analysis and simulation results are given to illustrate the efficiency of the proposed scheme and the accuracy of the analysis.