Busy period of a single-server Poisson queueing system with splitting and batch delayed-feedback

摘要

We consider a queueing system consisting of a service station, a splitter and a delay station. There are two types of arrivals to the service station. External tasks arrive according to a Poisson process while internal tasks arrive as batches from the delay station, also according to a Poisson process but with a different parameter. There is a single server at the service station and a processor at the delay station. Splitting is immediate. Each of the two stations has a buffer as its waiting room. The service distribution is exponential. Feedbacks occur exponentially with delay and in batches of certain sizes. We consider the busy period of the server and an algorithm for computing the expected number of busy periods in the service station, which is of Takacs's renewal equation form. Some numerical examples are also offered.