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Erschienen in:
2013 | OriginalPaper | Buchkapitel
Queueing System MAP/M/N/N + K Operating in Random Environment as a Model of Call Center
verfasst von : Olga Dudina, Sergey Dudin
Erschienen in: Modern Probabilistic Methods for Analysis of Telecommunication Networks
Verlag: Springer Berlin Heidelberg
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A multi-server queueing system with a Markovian Arrival Process (
MAP
), a finite buffer and impatient customers operating in random environment as a model of a call center is investigated. The service time of a customer by a server has an exponential distribution. If all servers are busy at a customer arrival epoch, the customer may leave the system forever or move to the buffer with probability that depends on the number of customers in the buffer. During a waiting period, a customer can be impatient and can leave the system without the service. System parameters depend on the state of the random environment. An efficient algorithm for calculating the stationary probabilities of system states is proposed. Some key performance measures are calculated. The Laplace-Stieltjes transforms of the sojourn and waiting time distributions are derived.