Priority-based Call Admission Control of multiclasses in Mobile networks

One important thing is guarantee QoS over wireless infrastructures. Call admission control plays a significant role in providing the designed QoS in wireless networks. This paper presents a traffic control scheme for improving QoS, traffic model and performance evaluation are described. We consider a traffic model has K QoS classes and each class has its own priority. Priority-based QoS in this case is described by 0 ≤ β
i
≤ 1 (1 ≤ i ≤ K) for class i and 0 ≤ β
1
≤ β
2
...≤ β
K
≤ 1 (the choice of these probabilities β
i
according to the QoS). New call in each class is admitted or rejected based on the channel occupancy and its priority. Important performance measures of the suggested scheme such as the blocking probability of new call and dropping probability of handoff call are described and evaluated