Ubiquitous connectivity among objects is the already expected future of the Internet of Things ages we are living today. Technologies are competing fiercely to fulfill this goal. Still, none of them has been proven as the one-size-fits-all solution for any application scenarios. Indoor Positioning System, and Direction Finding problems, represent an interesting playground for Internet of Things technologies. In this challenge, one of the major stakeholders is Bluetooth: initially conceived as a short-range solution for Personal Area Networks, it has now evolved to version 5, which natively supports both Angle of Departure and Angle of Arrival techniques. In this work, a Connection-Oriented Real-Time Locating System is realized to deeply investigate the newly added features of Bluetooth, thanks to a dedicated framework that evaluates gathered data and their reliability. A thorough experimental campaign has been carried out in both indoor and outdoor conditions, with interesting results. Overall, the main outcome is that the Angle of Arrival is not sufficient to solve Direction Finding problems and a more precise estimation of both directions and distances requires other quality indexes. In particular, the Received Signal Strength Indicator is proposed to be used in conjunction with the Angle of Arrival as part of the measurement framework.
Indoor Localization with Bluetooth: a Framework for Modelling Errors in AoA and RSSI
Dentamaro V.
;Tateo G.
2021-01-01
Abstract
Ubiquitous connectivity among objects is the already expected future of the Internet of Things ages we are living today. Technologies are competing fiercely to fulfill this goal. Still, none of them has been proven as the one-size-fits-all solution for any application scenarios. Indoor Positioning System, and Direction Finding problems, represent an interesting playground for Internet of Things technologies. In this challenge, one of the major stakeholders is Bluetooth: initially conceived as a short-range solution for Personal Area Networks, it has now evolved to version 5, which natively supports both Angle of Departure and Angle of Arrival techniques. In this work, a Connection-Oriented Real-Time Locating System is realized to deeply investigate the newly added features of Bluetooth, thanks to a dedicated framework that evaluates gathered data and their reliability. A thorough experimental campaign has been carried out in both indoor and outdoor conditions, with interesting results. Overall, the main outcome is that the Angle of Arrival is not sufficient to solve Direction Finding problems and a more precise estimation of both directions and distances requires other quality indexes. In particular, the Received Signal Strength Indicator is proposed to be used in conjunction with the Angle of Arrival as part of the measurement framework.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
