本文考虑顾客到达与服务员休假相关的多重休假离散时间排队系统,用更新过程及u-变换分析了系统的队长性质.分别得到系统在三种时点(n-,n+,n)处的队长分布的递推解,进而揭示了在不同到达率条件下系统队长分布不再具有随机分解特性,得到了系统在四种时点(n-,n+,n,离去时点Dn)处稳态队长分布的重要关系(不同于连续时间排队系统).
In this paper, we consider a discrete time multi-vacation queueing system with variable arrival rate. Using renewal process and u-transform, we study the queue size properties and derive the recursive expressions of the queue size distribution at any epoch n-, n+, and n. The results obtained in this paper indicate that the equilib- rium queue size distribution no longer follows the stochastic decomposition discipline. Furthermore the important relations between equilibrium queue size distributions at different epochs (n-, n+, n and departure epoch Dn). are discovered (being different from the corresponding relations given in continuous queueing system).