도시철도 차지상 통합데이터 전송시스템의 로밍 구현

초록

As to the railway field, it is the trend that many companies develop a system between the railway vehicle and ground equipment in connection with data transmission according to the system construction demand of the preexistence operation line and introduction of the new establishment line. In the early stage of introduction, it was the level in which a performance introduced wireless LAN equipment of the verified relative foreign-made and it applies, but there was a difficult with the structure of the expensive cost in an introduction. After the dedicated frequency is announced, the wireless MODEM technology of applying the ISM band wireless LAN technology and DVB-T technology are handled mainly. In this paper, we investigate the roaming unction of the i ntegrated data transmission system for subway.