International Journal of Advanced Research in Computer Science and Software Engineering (IJARCSSE)
Call Admission Control (CAC) plays a vital role in providing Quality of Service (QoS) performance of the system. IEEE 802.16 standard does not describe the procedure for implementing CAC. There is a need of efficient CAC algorithm that simultaneously manages traffic and wisely utilizes the available bandwidth resources. In this paper a CAC scheme is proposed which works on partitioning the bandwidth into four portions, namely, CBR (Constant Bit Rate), VBR (Variable Bit Rate), HO (HandOver), and shared portion. Waiting queues are implemented in CBR and VBR portions for lowering blocking probability and fuzzy logic is implemented in HO portion for lowering dropping probability.