Research on E( x) Characteristics of Two-Class Polling System of Exhaustive-Gated Service
Yang Zhiju · Dianzi xuebao · 2014
Based on priority differentiation and fairness of the system,this paper proposes a two-class polling system,namely exhaustive-gated service system,which uses exhaustive service for ordinary stations and gated service for the central station. The scheme meets the requirements not only for priority differentiation but also fairness. The mathematical model of the new system is set up by method of imbedded Markov chain theory and generating function,then the E( x) performance characteristics including mean queue length and polling cycle time are accurately analyzed. Theoretical and simulation results are identical and show that the new system efficiently differentiates priorities by always polling central station at first under better fairness for ordinary station.