Abstract
We consider a modified Erlang loss system where the first priority customers (class-1) are lost if find all servers busy, while the second priority customers (class-2) form an infinite capacity queue. A new feature of this system is that sub-classes of class-1 customers are assigned on servers according to assignment probabilities. All customers follow Poisson inputs and have general class-dependent service time. We show how the product form of class-1 stationary probabilities can be used to obtain the stability condition of the whole system even when sub-classes of class-1 customers have different service rates. Also we perform discrete event simulation to confirm theoretical results.
The research is supported by Russian Foundation for Basic Research, projects 18-07-00147, 18-07-00156 and 19-07-00303.
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Rogozin, S., Morozov, E. (2021). Stability Condition of a Multi-class Modified Erlang System. In: Dudin, A., Nazarov, A., Moiseev, A. (eds) Information Technologies and Mathematical Modelling. Queueing Theory and Applications. ITMM 2020. Communications in Computer and Information Science, vol 1391. Springer, Cham. https://doi.org/10.1007/978-3-030-72247-0_19
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