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arXiv 1209.5604math.PRcs.NI
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随机过程的尾概率

Tail Probabilities in Queueing Processes

Quan-Lin Li

摘要:

在具有资源管理的大规模随机网络的研究中,微分方程和平均场极限是两个关键技术。最近的研究表明,期望分数向量(即尾概率向量)在建立平均场微分方程中起着关键作用。为了进一步将尾概率向量技术应用于大规模随机网络的资源管理,本文讨论了QBD过程、GI/M/1型和M/G/1型马尔可夫链等几种基本随机过程的尾概率,并通过矩阵几何解、矩阵迭代解、矩阵乘积解和两种RG分解。在此基础上,我们考虑了M/M/1重试排队、M(n)/M(n)/1排队、服务台多重休假的M/M/1排队和服务台可修的M/M/1排队等四种情形,其中对M/M/1重试排队作了详细的讨论,对其它三种情形作了简单的分析。值得注意的是,本文给出的结果将是非常有用的研究大规模随机网络的资源管理,包括超市模型和工作窃取模型。

英文摘要:

In the study of large scale stochastic networks with resource management, differential equations and mean-field limits are two key techniques. Recent research shows that the expected fraction vector (that is, the tailed probability vector) plays a key role in setting up mean-field differential equations. To further apply the technique of tailed probability vector to deal with resource management of large scale stochastic networks, this paper discusses tailed probabilities in some basic queueing processes including QBD processes, Markov chains of GI/M/1 type and of M/G/1 type, and also provides some effective and efficient algorithms for computing the tailed probabilities by means of the matrix-geometric solution, the matrix-iterative solution, the matrix-product solution and the two types of RG-factorizations. Furthermore, we consider four queueing examples: The M/M/1 retrial queue, the M(n)/M(n)/1 queue, the M/M/1 queue with server multiple vacations and the M/M/1 queue with repairable server, where the M/M/1 retrial queue is given a detailed discussion, while the other three examples are analyzed simply. Note that the results given in this paper will be very useful in the study of large scale stochastic networks with resource management, including the supermarket models and the work stealing models.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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