Performance analysis for call admission control on voice/data integration mobile communication system

When designing the call admission control algorithm for multi-traffic mobile communication system, two priorities must be taken into account: one is the priority between the traffics; other is the priority for handoff call. In this paper, an analytical model, a two-dimension Markov chain is proposed to investigate the performance of the call admission control scheme, which is based on guard channel strategy and movable boundary algorithm. The performance of new call blocking probability, handoff call blocking probability, data packet loss probability and mean delay of data packet can be obtained from the proposed model. This paper also provides an easier-to-compute approximate method for the proposed model. Numerical results show that the two priorities are guaranteed and the result of the provided approximate method is close to the true result.