WLAN+RFID组合系统的应用研究

Research on application of WLAN and RFID combined system

提出了一种由WLAN和RFID组成的称为WLAN+RFID的组合系统。阐述了该系统的工作原理,以及在室外货场中的应用。该系统利用了WLAN的无线传输和RFID的非接触式自动识别的特点,能为用户提供快捷、灵活和移动式的识别服务。分析了该系统的工作频率分配、所采用的调制技术、移动终端的漫游以及系统的信息安全保障。指出了该系统的信息安全重点是WLAN,如果WLAN已经采用了足够的安全措施,那么RFID就可以不再设加密功能了。

A so-called WLAN＋RFID system is introduced. Its working principle and its application in freight yard operation are elaborated. The system （WLAN＋RFID combined system） could provide users with fast, flexible and mobile tag identification service by making use of WLAN transmission and non-touch automatic identification feature. System working frequencies allocation, its modulation technique, terminal roaming, and information security are analyzed. It is noted that information security of the whole system relies on WLAN. Therefore there is no need to have data encryption on RFID and a tight security measure is implemented in WLAN.