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개방형 차상중심 열차제어신호 전송시스템을 위한 MAC 계층 기반 보호된 통신 방법
박선영(Seon-Yeong Park),김성운(Sung-Un Kim),선기현(Ki-Hyun Sun),백종현(Jong-Hyun Beak),황종규(Jong-Gyu Hwang),조현정(Hyun-Jeong Jo),최대우(Dae-Woo Choi) 한국정보기술학회 2012 한국정보기술학회논문지 Vol.10 No.7
Railway control signal transmission systems are being developed from employing closed (and wired) communication networks to open (and wireless) communication networks based systems. Hence transmission technologies providing the safety procedure and security mechanism are strongly required. In this paper, we suggest a security evaluation procedure for ICT based open on-board railway control signal transmission systems to prevent threats such as modification and falsification of the MAC frame by the unauthorized party in the wireless communication links. In the suggested security evaluation procedure, we propose an improved MAC frame encryption method modified from WPA2 security standard protocol for WLAN. Our simulation results revealed that the proposed MAC frame encryption method is secured against various threats and hazardous events generated randomly. The generation of various threats and hazardous events is based on the defined substance in the suggested security evaluation procedure in this paper.