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arXiv 1802.07451math.PR
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一类服务时间与类别相关的两级重试系统

A two-class queueing system with constant retrial policy and general class dependent service times

Ioannis Dimitriou

摘要:

研究了一类服务时间与顾客类别相关的两类轨道顾客的单服务台重试排队系统。如果到达的客户发现服务器不可用,它将根据其类型进入一个称为轨道的虚拟队列。来自轨道的客户根据恒定重试策略独立地重试访问服务器。通过求解一个Riemann边值问题,导出了服务完成时刻轨道顾客数平稳分布的母函数。对于对称系统,我们也推导出明确的表达式,在轨道上的预期延迟没有解决一个边值问题。一个简单的数值例子来说明系统的性能。

英文摘要:

A single server retrial queueing system with two-classes of orbiting customers, and general class dependent service times is considered. If an arriving customer finds the server unavailable, it enters a virtual queue, called the orbit, according to its type. The customers from the orbits retry independently to access the server according to the constant retrial policy. We derive the generating function of the stationary distribution of the number of orbiting customers at service completion epochs in terms of the solution of a Riemann boundary value problem. For the symmetrical system we also derived explicit expressions for the expected delay in an orbit without solving a boundary value problem. A simple numerical example is obtained to illustrate the system's performance.

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