Journal ArticleDOI
Location Fingerprinting With Bluetooth Low Energy Beacons
Ramsey Faragher,Robert Harle +1 more
TLDR
This work provides a detailed study of BLE fingerprinting using 19 beacons distributed around a ~600 m2 testbed to position a consumer device, and investigates the choice of key parameters in a BLE positioning system, including beacon density, transmit power, and transmit frequency.Abstract:
The complexity of indoor radio propagation has resulted in location-awareness being derived from empirical fingerprinting techniques, where positioning is performed via a previously-constructed radio map, usually of WiFi signals. The recent introduction of the Bluetooth Low Energy (BLE) radio protocol provides new opportunities for indoor location. It supports portable battery-powered beacons that can be easily distributed at low cost, giving it distinct advantages over WiFi. However, its differing use of the radio band brings new challenges too. In this work, we provide a detailed study of BLE fingerprinting using 19 beacons distributed around a $\sim\! 600\ \mbox{m}^2$ testbed to position a consumer device. We demonstrate the high susceptibility of BLE to fast fading, show how to mitigate this, and quantify the true power cost of continuous BLE scanning. We further investigate the choice of key parameters in a BLE positioning system, including beacon density, transmit power, and transmit frequency. We also provide quantitative comparison with WiFi fingerprinting. Our results show advantages to the use of BLE beacons for positioning. For one-shot (push-to-fix) positioning we achieve $30\ \mbox{m}^2$ ), compared to $100\ \mbox{m}^2$ ) and < 8.5 m for an established WiFi network in the same area.read more
Citations
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Proceedings ArticleDOI
Demonstração Experimental de Vulnerabilidades em Dispositivos Internet das Coisas
Raphael Lucas da Silva Marques Leonardo Lopes do Nascimento,Ryan M. S. Leal,Iguatemi E. Fonseca +2 more
TL;DR: In this article , the authors present a tecnologia e protocolos BLE, bem como vulnerabilidades and ataques realizados in dispositivos.
Location-based Automated Process Modelling
TL;DR: This work presents an approach to collect service process data based on wireless indoor positioning using inexpensive wireless sensors and smart phones, which collects a minimised but precise data sets for automated process modelling.
Proceedings ArticleDOI
Accurate and Efficient Wi-Fi Fingerprinting-Based Indoor Positioning in Large Areas
TL;DR: The Strongest AP Set (SAS) as discussed by the authors is a clustering model conceived for RSSI-based fingerprinting, which is able to reduce the computational cost and provide better accuracy than the full model without clustering.
Book ChapterDOI
Development of Converged Contents Applications Using Beacon with Bluetooth v4.0
TL;DR: In this paper , the authors suggest one basic point about the technique to analyze and manage the large data collected by the beacon and also efficiently provide the converged contents service using the user information data stored in the server.
References
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Journal ArticleDOI
Survey of Wireless Indoor Positioning Techniques and Systems
TL;DR: Comprehensive performance comparisons including accuracy, precision, complexity, scalability, robustness, and cost are presented.
Proceedings ArticleDOI
The Horus WLAN location determination system
TL;DR: The Horus system identifies different causes for the wireless channel variations and addresses them and uses location-clustering techniques to reduce the computational requirements of the algorithm and the lightweight Horus algorithm helps in supporting a larger number of users by running the algorithm at the clients.
Journal ArticleDOI
A Survey of Indoor Inertial Positioning Systems for Pedestrians
TL;DR: It is concluded that PDR techniques alone can offer good short- to medium- term tracking under certain circumstances, but that regular absolute position fixes from partner systems will be needed to ensure long-term operation and to cope with unexpected behaviours.
Enhancements to the RADAR User Location and Tracking System
TL;DR: This paper analyzes shortcomings of the basic system, develops and evaluates solutions to address these shortcomings, and describes several new enhancements, including a novel access point-based environmental profiling scheme, and a Viterbi-like algorithm for continuous user tracking and disambiguation of candidate user locations.
Network Time Protocol Version 4: Protocol and Algorithms Specification
TL;DR: NTP version 4 (NTPv4), which is backwards compatible with NTP version 3 (N TPv3), described in RFC 1305, as well as previous versions of the protocol, are described.
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