Fundamentals of Queueing Networks

In this chapter, we consider service models, where the service to be provided may be represented as a sequence of services provided by several servers. Such a service scenario may be conveniently represented as Networks of Queues as shown in Figures 5.1 and 5.2. In these models, customers/jobs which finish service at a queue may either move on for the next stage of service to another queue (or even re-enter the earlier queue) or may leave the network altogether.