×

\(\mathrm{G}/\mathrm{G}/\infty\) queues with renewal alternating interruptions. (English) Zbl 1351.60123

Summary: We study \(\mathrm{G}/\mathrm{G}/\infty\) queues with renewal alternating service interruptions, where the service station experiences ‘up’ and ‘down’ periods. The system operates normally in the up periods, and all servers stop functioning while customers continue entering the system during the down periods. The amount of service a customer has received when an interruption occurs will be conserved and the service will resume when the down period ends. We use a two-parameter process to describe the system dynamics: \(X^{r}(t,y)\) tracking the number of customers in the system at time \(t\) that have residual service times strictly greater than \(y\). The service times are assumed to satisfy either of the two conditions: they are independent and identically distributed with a distribution of a finite support, or are a stationary and weakly dependent sequence satisfying the \(\phi\)-mixing condition and having a continuous marginal distribution function. We consider the system in a heavy-traffic asymptotic regime where the arrival rate gets large and service time distribution is fixed, and the interruption down times are asymptotically negligible while the up times are of the same order as the service times. We show the functional law of large numbers and functional central limit theorem (FCLT) for the process \(X^{r}(t,y)\) in this regime, where the convergence is in the space \(\mathbb{D}([0,\infty), (\mathbb{D},L_{1}))\) endowed with the Skorokhod \(M_{1}\) topology. The limit processes in the FCLT possess a stochastic decomposition property.

MSC:

60K25 Queueing theory (aspects of probability theory)
60F17 Functional limit theorems; invariance principles
60F05 Central limit and other weak theorems
60J75 Jump processes (MSC2010)
60G44 Martingales with continuous parameter
90B22 Queues and service in operations research
PDFBibTeX XMLCite
Full Text: DOI Euclid