An efficient call admission control for IEEE 802.16 networks

Scheduling and Call Admission Control (CAC) in IEEE 802.16 system play a vital role in the performance of the system. The 802.16 standard does not specify any scheduling architecture or CAC. Many proposals assume a bandwidth based CAC which only provides bandwidth guarantee, but cannot fulfill delay and jitter requirements. In this paper, we propose a CAC that ensures QoS guarantee in terms of bandwidth, delay and jitter. We also present a novel method of estimating banwdwidth requirement of variable bit rate application to increase the e resource utilization of the system. e present our simulation result to show the effectiveness of bandwidth estimation and better performance over bandwidth based CAC.