Implementation of a Location-Aware Information Delivery Method for a Vehicular Application using Digital Terrestrial Broadcasting

”One seg” or one-segment digital terrestrial broadcasting service was launched in Japan in 2006. One current use of one-segment broadcasting is providing digital TV programs to mobile phones, portable devices, car navigation systems, and so on. Navigation systems generally provide drivers with point-of-interest information, traffic information, weather reports and so on through cellular phone networks as well as driving directions. The one-segment broadcast method is an additional candidate for disseminating location-aware information for vehicular applications. Using the broadcast method to deliver location-aware information is more scalable and less expensive in comparison with cellular phones. We have proposed a cache system especially for caching location-aware information for broadcast data delivery. In this paper, we implement the emulation system to evaluate this location-aware information delivery method for a concrete vehicular application that delivers geographic road map data to a car navigation system.