Location Fingerprinting With Bluetooth Low Energy Beacons
| Autor: | Ramsey Faragher, Robert Harle |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Positioning system
Computer Networks and Communications Hybrid positioning system business.industry Computer science computer.internet_protocol ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS Real-time computing Testbed Transmitter power output Radio spectrum law.invention Beacon Bluetooth law Fading Electrical and Electronic Engineering business computer Computer network Bluetooth Low Energy |
| Zdroj: | IEEE Journal on Selected Areas in Communications. 33:2418-2428 |
| ISSN: | 0733-8716 |
| DOI: | 10.1109/jsac.2015.2430281 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|