Modelling and evaluation of the 3G mobile networks with hot-spot WLANs
International Journal of Wireless and Mobile Computing
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This paper presents an analytical model of channel allocations with preemptive priority to study the handoff performance for integrated voice/data mobile networks. By analyzing the system as a quasi-birth-and-death process, we obtain the steady state probabilities and some interesting performance measures, such as new voice (new data) blocking probability, handoff voice (handoff data) dropping probability, the channel utilization, and the busy period time in the cell. From the analysis and numerical results, we can conclude that our scheme can provide complete service differentiation and different QoS guarantee for different traffic classes, and get pretty good channel utilization by appropriate threshold parameter design. The performance measures obtained in the paper are very useful in evaluating the needed resource of future wireless mobile networks.