Dynamic Call Admission Control for QoS Provisioning in Multimedia Wireless Networks

Next generation wireless networks require guaranteed quality of service (QoS). The proposed dynamic call admission control (DCAC) architecture provides the guaranteed quality of service for real-time and non-real time traffic. DCAC architecture supports future generation wireless networks because it implements a traffic based on different type of call (ToC) with admission control. The bandwidth provisioning model provides bandwidth reallocation and reservation for different ToC. The proposed architecture tries to accomplish the minimum call blocking and handoff dropping rates based on the capacity of the neighboring base stations, current base station and ToC. The system is expected to achieve the required QoS requirements in terms of handoff call dropping probability and new call blocking probability while maintaining efficient bandwidth utilization. The minimal required bandwidth is assigned during the lifetime of high priority calls.