Fuzzy Retrial Queues with Priority using DSW Algorithm

In this paper we study the priority queueing model under fuzzy environment.It optimize a fuzzy priority queueing model (preemptive priority, non-preemptive priority) in which arrival rate ,service rate,retrial rate are fuzzy numbers.Approximate method of Extension namely DSW (Dong, Shah and Wong) algorithm is used to define membership functions of the performance measures of priority queuing system . DSW algorithm is based on the ? cut representation of fuzzy sets in a standard interval analysis. Numerical example is also illustrated to check the validity of the model. Keywords: Fuzzy set theory, Retrial queue,Priority discipline, DSW Algorithm.