Evaluation of Telecommunication Network Operational Reliability Based on Gray Relation Projection Method

Telecommunication network reliability plays an important role in network management and decision-making, but most traditional methods for analyzing and estimating the telecommunication network reliability can't evaluate the network actually and roundly because it only considers a certain single performance or index of the network. According to the knowledge of reliability and systems engineering, a novel model for evaluating telecommunication network operational reliability is proposed based on multiple criteria decision making (MCDM). Because of the relativity, fuzziness and grayness of evaluating index, the gray relation projection method is applied in the model to calculate quantitatively the synthetic evaluation value of the network operational reliability, hereby the ordering and optimal selection of the telecommunication network is obtained; and the weight of the index is calculated objectively by the entropy method to avoid the influence of subjective factors. Finally, an example demonstrates the feasibility and validity of the proposed method