A METHOD FOR COMPUTING STEADY-STATE RELIABILITY INDEXES OF A NETWORK WITH LIMITED REPAIR

this paper presents a method for computing steady-state availability, MTBF and MTTR of a network with limited repair. Repairs of failed elements are carried out in a process of network application. The number of elements which are served by a repair center is usually less than the number of repair units in this center. Therefore a queue of failed elements may be in repair center, and so elements are interdependent. The main idea of the method is based on the two-level model. Network success conditions are given by Boolean function. A failure and repair process of elements described by closed heterogeneous queueing networks. A steady-state availability of a network is presented by structural parameters and probability of aggregate state combinations of interdependent elements. Structural parameters are determined by any algorithms for sum of disjoint product.