Safety Evaluation of High Speed Railway LTE-R Communication System Based on AHP and Fuzzy Comprehensive Evaluation

The rapid development of high-speed railway has made the existing GSM-R mobile communication system unable to meet certain specific services of the railway. Therefore, the LTE-R mobile communication system has been proposed, which has the advantages of small delay and high spectral efficiency, and becomes the next generation railway. Dedicated communication system. At present, China has not established a complete LTE-R system security evaluation system. This paper first uses the analytic hierarchy process to calculate the weight of each factor in the LTE-R system model, and then uses the fuzzy comprehensive evaluation method to synthesize the security status of the LTE-R system. Evaluation. The results show that the LTE-R system security evaluation based on analytic hierarchy process and fuzzy comprehensive evaluation method can achieve the safety evaluation of the LTE-R system.