N정책과 T정책이 적용되는 M/G/1 시스템의 분석

Abstract

As for M /G /l queueing system, we use various control policies, with which we can optimize the system. Up to now the mosr widely adopted policies are N-Policy, T-Poiicy, D-Policy, and so on. The existing researches are largely concerned to find an optimal operation condition or to optimize the system under single policy in M /G /l system. There are, however, few literatures dealing with multiple control policies at once to enhance the flexibility of the model* In this study, we consider M /G /l system adopting N-Policy and T-Policy simultaneously. I f one of two conditions is satisfied, then, the server starts the service. We call this M in(N3T)-Policy. We find the probability distribution of the number of customers and mean waiting rime in steady state and derive a cost function* Nexc, we seek the optimal threshold under various AT values. Finally, we reveal the characteristics of cost function.