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1. WO2014089040 - APPARATUS, METHOD, AND SOFTWARE SYSTEMS FOR SMARTPHONE-BASED FINE-GRAINED INDOOR LOCALIZATION

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Publication Number WO/2014/089040
Publication Date 12.06.2014
International Application No. PCT/US2013/072808
International Filing Date 03.12.2013
IPC
G01S 1/76 2006.1
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
1Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
72using ultrasonic, sonic, or infrasonic waves
76Systems for determining direction or position line
CPC
G01S 1/725
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
1Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
72using ultrasonic, sonic or infrasonic waves
725Marker, boundary, call-sign or like beacons transmitting signals not carrying directional information
G01S 5/30
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
5Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
18using ultrasonic, sonic, or infrasonic waves
30Determining absolute distances from a plurality of spaced points of known location
H04W 16/14
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
16Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
14Spectrum sharing arrangements ; between different networks
H04W 56/002
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
56Synchronisation arrangements
001Synchronization between nodes
002Mutual synchronization
H04W 64/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
64Locating users or terminals ; or network equipment; for network management purposes, e.g. mobility management
Applicants
  • UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.
Inventors
  • LI, Xiaolin
  • LIU, Kaikai
Agents
  • McCLELLAN, William, R.
Priority Data
61/732,52803.12.2012US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) APPARATUS, METHOD, AND SOFTWARE SYSTEMS FOR SMARTPHONE-BASED FINE-GRAINED INDOOR LOCALIZATION
(FR) APPAREIL, PROCÉDÉ ET SYSTÈMES DE LOGICIEL POUR UNE LOCALISATION EN INTÉRIEUR À GRAINS FINS BASÉE SUR UN TÉLÉPHONE INTELLIGENT
front page image
Abstract
(EN) Techniques for accurate, low-complexity, scalable indoor localization. Low- complexity anchor nodes generate acoustic beacon signals, which are passively detectable by a mobile device, which may be unmodified smartphones operating in an acoustic frequency range. The acoustic beacon signals are modulated via codes in a boundary band of audio and ultrasound frequencies, imperceptible to humans yet detectable via a voice microphone of an unmodified smartphone. An application on the mobile device passively captures the acoustic beacon signals and determines relative distances to the anchor nodes. Localization and distance update techniques, implemented on the mobile device and/or a remote server, determines and updates in real-time the location of the mobile device. The system may be scalable to support any number of mobile devices. Based on the tracked location, the indoor localization system may provide indoor location-based-services (LBS) to the mobile devices, and transmit to the mobile device information relevant to its location.
(FR) L'invention concerne des techniques pour une localisation en intérieur précise, de faible complexité, pouvant être mise à l'échelle. Des nœuds d'ancrage de faible complexité génèrent des signaux de balise acoustique, qui peuvent être détectés de manière passive par un dispositif mobile, qui peut être des téléphones intelligents non modifiés fonctionnant dans une plage de fréquences acoustiques. Les signaux de balise acoustique sont modulés par l'intermédiaire de codes dans une bande de limite de fréquences audio et ultrasonores, ne pouvant pas être perçues par les êtres humains, pourtant détectables par l'intermédiaire d'un microphone vocal d'un téléphone intelligent non modifié. Une application sur le dispositif mobile capture de manière passive les signaux de balise acoustique et détermine des distances relatives par rapport aux nœuds d'ancrage. Des techniques de mise à jour de localisation et de distance, mises en œuvre sur le dispositif mobile et/ou un serveur à distance, déterminent et mettent à jour en temps réel la localisation du dispositif mobile. Le système peut être mis à l'échelle pour prendre en charge un nombre quelconque de dispositifs mobiles. Sur la base de la localisation suivie, le système de localisation en intérieur peut fournir des services de localisation (LBS) en intérieur aux dispositifs mobiles, et transmettre au dispositif mobile des informations pertinentes pour sa localisation.
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