By L. Breuer, Dieter Baum

ISBN-10: 1402036302

ISBN-13: 9781402036309

The textbook comprises the documents of a two-semester path on queueing conception, together with an advent to matrix-analytic equipment. The direction is directed to final 12 months undergraduate and primary yr graduate scholars of utilized likelihood and machine technological know-how, who've already accomplished an creation to likelihood thought. Its function is to provide fabric that's shut sufficient to concrete queueing versions and their functions, whereas supplying a legitimate mathematical beginning for his or her research. A favourite a part of the booklet might be dedicated to matrix-analytic tools. this can be a number of ways which expand the applicability of Markov renewal the right way to queueing concept by way of introducing a finite variety of auxiliary states. For the embedded Markov chains this results in transition matrices in block shape reminiscent of the constitution of classical versions. Matrix-analytic tools became rather well known in queueing concept over the past 20 years. The goal to incorporate those in a scholars' creation to queueing conception has been the most motivation for the authors to write down the current publication. Its objective is a presentation of an important matrix-analytic strategies like phase-type distributions, Markovian arrival tactics, the GI/PH/1 and BMAP/G/1 queues in addition to QBDs and discrete time ways.

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Extra info for An Introduction to Queueing Theory: and Matrix-Analytic Methods

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2. 6 The transition probabilities Pij (t) of a Markov process satisfy the systems dP Pij (t) = Pik (t)gkj = gik Pkj (t) dt k∈E k∈E of differential equations. These are called the Kolmogorov forward and backward equations. 4, it follows by induction on the number of jumps that all restricted probabilities P (n) (t) are Lebesgue inte(n) grable with respect to t over finite intervals. Since the sum of all Pij (t) is a probability and thus bounded, we conclude by majorized convergence that also P (t) is Lebesgue integrable with respect to t over finite intervals.

33 can be substituted by the condition j∈E pij h(j) ≤ h(i) − 1 for all i ∈ E \ F . 33: Let P denote the transition matrix of a positive recurrent Markov chain with discrete state space E. Then there is a function h : E → R and a finite subset F ⊂ E such that j∈E j∈E pij h(j) < ∞ for all i ∈ F , and pij h(j) ≤ h(i) − 1 for all i ∈ E \ F . 38 AN INTRODUCTION TO QUEUEING THEORY Hint: Consider the conditional expectation of the remaining time until returning to a fixed set F of states. 17 For the discrete, non–negative random walk with transition matrix ⎞ ⎛ p00 p01 ⎟ ⎜p10 0 p12 ⎜ ⎟ P =⎜ ⎟ p 0 p 10 12 ⎝ ⎠ ..

Thus there are numbers m, n ∈ N with P n (i, j) > 0 and P m (j, i) > 0. Because of the representation E(N Ni (k)|X0 = i) = kl=0 P l (i, i), we obtain 0 = lim k→∞ k l l=0 P (i, i) k k−m−n l P (j, j) l=0 · P n (i, j)P m (j, i) k k−m−n l P (j, j) k−m−n = lim · l=0 · P n (i, j)P m (j, i) k→∞ k k−m−n k l l=0 P (j, j) = lim · P n (i, j)P m (j, i) k→∞ k P n (i, j)P m (j, i) = mj ≥ lim k→∞ and thus mj = ∞, which signifies the null recurrence of j. Thus we can call a communication class positive recurrent or null recurrent.

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An Introduction to Queueing Theory: and Matrix-Analytic Methods by L. Breuer, Dieter Baum


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