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
BLE Fingerprinting Automatic Calibration using an Ultrasonic IPS
TL;DR: This work proposes an automatic RSS calibration system for fingerprinting positioning in the context of Bluetooth Low Energy (BLE), using the advantages of ultrasound time of flight estimations and automatizing reference measurements without human presence, allowing for longer calibration times and greater numbers of measurements.
Journal ArticleDOI
Support Vector Regression for Bluetooth Ranging in Multipath Environments
TL;DR: In this paper , a data-driven support vector regression (SVR) approach is proposed to solve the problem of accurate ranging with multichannel frequency response (CFR) measurements.
Pedestrian inertial navigation algorithm based on scene recognition
TL;DR: A pedestrian inertial navigation algorithm based on scene recognition based on the hypothesis that corridors in buildings are generally narrow and straight and pedestrians have a high probability to walk in straight lines in corridors is proposed.
Book ChapterDOI
Identifying Similar Nodes by Proximity Estimation in the Inspection of Industrial Wireless Sensor Networks
TL;DR: In this paper, a proximity estimation algorithm is proposed to help the robot to identify a specific node in the network, which is deployed a patrol inspection testbed with a mobile robot and multiple sensor nodes, and the experiments are executed to verify its performance.
Proceedings ArticleDOI
Indoor Localization-based Energy Management for Smart Home
Gaoyang Shan,Byeong-hee Roh +1 more
TL;DR: Wang et al. as mentioned in this paper proposed an indoor localization-based energy management system for smart homes, which can effectively solve the energy waste caused by users forgetting to turn off the device's power.
References
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Journal ArticleDOI
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TL;DR: Comprehensive performance comparisons including accuracy, precision, complexity, scalability, robustness, and cost are presented.
Proceedings ArticleDOI
The Horus WLAN location determination system
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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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