LED 소자를 이용한 도시철도 위치기반 정보제공 방안 연구

초록

As railway station has unique operating condition due to its electromagnetic wave environments such as severe signal jam caused by subway and intensively clustered Wi-Fi AP infrastructures. Conventional locating systems using Wi-Fi finger printing method or time delay algorithm shows severely noisy condition causing positioning error. Therefore, in this paper, we propose precise locating system optimized to the railway environment which contains lighting infrastructure for entire operating time due to the underground environment. LED based in-door real-time locating system can detect position of the user with minimized error using VLC (Visible Light Communication) system integrated in subway station LED light. This locating system can be used to improve location-based services of railway to provide individualized information.