Single-server Queue With Working Vacation

In this paper,we research the single-server queuing system with feedback,and non- feedback,we study several models.The single-server queuing system with working vacations has been studied by many researchers and many results have been obtained.However,the working vacation queuing system combining retrial,negative customers,feedback,N-policy has not been studied.Under this circumstance,we study several models as follows:firstly, we study a single-server working vacations queuing system with N-policy and Bernoulli feedback;secondly,we research a single-server working vacations queuing system with retrial;at last,we consider a single-server working vacations queuing system with negative customers and N-policy.In the process of resolution,we use Matrix- Geometric solution,and derive the queue length distribution and some performance measures.