online read us now
Paper details
Number 2 - June 2018
Volume 28 - 2018
Analysis of an N-policy GI/M/1 queue in a multi-phase service environment with disasters
Tao Jiang, Sherif I. Ammar, Baoxian Chang, Liwei Liu
Abstract
This paper investigates an N-policy GI/M/1 queue in a multi-phase service environment with disasters, where the system
tends to suffer from disastrous failures while it is in operative service environments, making all present customers leave the
system simultaneously and the server stop working completely. As soon as the number of customers in the queue reaches a
threshold value, the server resumes its service and moves to the appropriate operative service environment immediately with
some probability. We derive the stationary queue length distribution, which is then used for the computation of the Laplace–
Stieltjes transform of the sojourn time of an arbitrary customer and the server’s working time in a cycle. In addition, some
numerical examples are provided to illustrate the impact of several model parameters on the performance measures.
Keywords
N-policy, GI/M/1 queue, multi-phase service environment, disasters, sojourn time