Proper

Abstract

The indoor location-based control system determines user's location within a closed space and provides services required. The system is consists of a localization server, service-provision client, user application, and positioning technology. First, the localization server manages the accesses of the devices such as smartphones and estimates their indoor locations. Second, the service-provision client provides the services such as indoor navigation, monitoring/surveillance after receiving the indoor location information from the server. Third, the user application provides a clue that allows the server to localize the device(s) and receives a variety of services from the client. Finally, the key words for the localization technologies are indoor space, Bluetooth 4.0, RSSI (Received Signal Strength Indication), and trilateration. The indoor space is divided into several basic spaces taking a hexagonal shape similar to a hive. Based on the studies related to the indoor localization systems that use the BLE technology, we have completed a system that can estimate the position of a user the moment he/she arrives at his/her home and use the same information to control any necessary devices, allowing the user to experience a "smart living". The indoor localization system implemented in this study has an accuracy of approx. 74% when the margin of error is 1m. However, this level of accuracy is not enough to operate the system. Thus, additional studies are required to improve system's accuracy. The indoor location-based control system with a higher accuracy can provide many useful services to the user. For example, it will be able to provide an accurate indoor navigation service within a large space such as underground parking lot or subway transfer stations. Also, even in a small space, the system can be very useful to the visually impaired people who cannot obtain any visual information.