Leveraging Bluetooth 5.1 location services for improved multilateration: a preliminary study on indoor asset tracking
Miguel Roque Soares, Tiago Rocha, Duarte Oliper, Vânia Guimar�ã, N.A. es, Ricardo Santos · International Journal of Mobile Network Design and Innovation · 2023
Accurately tracking and managing indoor assets is crucial in many industries, such as healthcare, manufacturing, and warehousing.This exploratory study presents a new approach to indoor asset tracking using Nordic Semiconductor© innovative distance estimation techniques based on Bluetooth 5.1 physical layer updates.Our multilateration algorithm calculates the asset's exact location by leveraging distance estimates from multiple receivers over an extended period.We demonstrate the effectiveness of our system through real-world experiments conducted in an office setting, which shows that our system can locate and track assets with an average error of approximately ∼2.1 m using a BLE receptor density of approximately ∼3 per 550 m 2 .We also discuss our methodology, potential applications of our system, and future enhancements to improve the system's accuracy and expand its capabilities.