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A novel multi-server queue with heterogeneous customers is formulated and analyzed as the model of operation of a cell of a mobile communication network. We assume that the cell is divided into zones depending on signal quality. The type of a customer corresponds to a zone in which this customer is currently situated and the rate of the customer’s service depends on his/her type. During service, the...
Interruption from primary users is a key factor impacting the performance of secondary users in cognitive radio networks. Based on a simplified model of primary user interruptions (Markov chain), queuing analysis is carried out for two-server-single-queue and single-server-two-queue cases. A semi-analytic result is obtained for the generating function of queue length in the two-server-single-queue...
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