habits: a history aware based wi-fi indoor tracking system
DESCRIPTION
HABITS: A History Aware Based Wi-Fi Indoor Tracking System. Eoghan Furey Supervisors: Dr. Kevin Curran, Prof. Paul Mc Kevitt Faculty of Computing and Engineering, University of Ulster, Magee College, Derry. Introduction. Location Aware Computing (LAC) - Academia and Industry - PowerPoint PPT PresentationTRANSCRIPT
HABITS: A History Aware Based Wi-Fi Indoor Tracking
SystemEoghan Furey
Supervisors: Dr. Kevin Curran, Prof. Paul Mc KevittFaculty of Computing and Engineering, University of Ulster, Magee College, Derry
Introduction
Location Aware Computing (LAC) - Academia and Industry
Applications – medical, military, logistical and social
Positioning algorithms - period of rapid innovation
Optimize self-location estimates on Wi-Fi enabled devices
Research Objectives
New algorithm - improve location accuracy indoorsPlaceLab software platform - large 802.11 networkExtend the algorithm: Movement Multiple floors Effective Isotropic Radiated Power (EIRP) of the
Access Points (AP)
Test - Creative technologies application
Location Estimation ApproachesTechnologies:
GPS
RFID
Ultrasonic Systems
Inertia Tracking
GSM
FM radio Signals
802.11 Wi-Fi
Applications:Microsoft's Mappoint
Dodgeball (Smith 2005)
AT&T mMode’s Friend Finder
PlaceLab Software Platform
PlaceLab (LaMarca et al. 2005) consists of three key elements:
Radio beacons in environment
Databases holding beacon location information
PlaceLab clients - estimate their location from data
PlaceLab Architecture
PlaceLab Architecture (LaMarca et al. 2005)
PlaceLab
PlaceLab mapLoaderGUI interface with wigle.net
Tracker Hierarchy (LaMarca et al. 2005)
Positioning Algorithms
No training phase required:
Cell ID based
Proximity/Closest AP
Triangulation
Trilateration
Training phase required:
Centroid
Particle Filters
Fingerprinting
Effective Isotropic Radiated Power (EIRP)
Tsoulos (1999) defines EIRP as “the radiated power from the antenna referenced to a theoretical point source”
GSM networks – EIRP - median accuracy - 71.3m improvement (Hubrich and Curran 2007)
Project proposal
Predictions based on History of Movement
Software Analysis
Software:PlaceLab
Eclipse IDE
Airmagnet Wi-Fi Analysing Tools
Matlab
Hardware: Wireless NICs
Wi-Fi Access Points
Omni directional Antennas
Comparison to other work
Project Schedule
Conclusion
More accurate algorithm for Wi-Fi positioning in indoor environment
History of movement - predict most likely paths traveled by Wi-Fi enabled users
Movement history & EIRP - new method - location estimates
Test in creative technologies software application
Questions