The emerging context-aware applications relying on the wireless networking, require the availability of network services that provide even simple notions of context as position and identity. In the last few years several localization and tracking systems for indoor environment have been proposed. However, these systems are often very expensive since they require the installation of dedicated infrastructures of sensors, based on radio, ultrasound or infrared technologies, to determine the user position. This paper aims to propose and analyze a novel indoor localization and tracking system based on the Bluetooth technology. The Bluetooth technology is a short-range, low complexity and low cost wireless technology that supports explicit device discovery services. The proposed localization system fully integrates these device discovery procedures into the infrastructure-based network of Bluetooth access points that provides the wireless connectivity inside a building. This design approach guarantees a cost-effective solution for the positioning service implementation. In the paper we have extensively investigated through simulative analysis the performances of the proposed localization system. In particular, we have studied both the promptness of the localization service in tracking the user movement and the impact of the system operations on the data connections performances (throughput and delays). The numerical results prove that the proposed scheme has a negligible overhead, still providing a timely update of user location.
Design and Analysis of A Bluetooth-based Indoor Localization System
2003
Abstract
The emerging context-aware applications relying on the wireless networking, require the availability of network services that provide even simple notions of context as position and identity. In the last few years several localization and tracking systems for indoor environment have been proposed. However, these systems are often very expensive since they require the installation of dedicated infrastructures of sensors, based on radio, ultrasound or infrared technologies, to determine the user position. This paper aims to propose and analyze a novel indoor localization and tracking system based on the Bluetooth technology. The Bluetooth technology is a short-range, low complexity and low cost wireless technology that supports explicit device discovery services. The proposed localization system fully integrates these device discovery procedures into the infrastructure-based network of Bluetooth access points that provides the wireless connectivity inside a building. This design approach guarantees a cost-effective solution for the positioning service implementation. In the paper we have extensively investigated through simulative analysis the performances of the proposed localization system. In particular, we have studied both the promptness of the localization service in tracking the user movement and the impact of the system operations on the data connections performances (throughput and delays). The numerical results prove that the proposed scheme has a negligible overhead, still providing a timely update of user location.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
