Indoor positioning systems Kyle Hampton

Outline Introduction Uses Players Techniques Challenges Future Conclusion

What are indoor positioning systems? An indoor positioning system (IPS) is a network of devices used to wirelessly locate objects or people inside a building. Like GPS for the indoors

Example

Uses Indoor navigation Location based advertising Emergency response Many other applications: Social media Logistics Healthcare Manufacturing

Players Google ~ 10,0000 indoor locations Android – Fall 2011 Desktop – Fall 2012 IOS ? Partnership for providing floorplans Google Maps Floor Plan Marker app Microsoft ~ 3,000 indoor locations Apple - Acquisition of WiFiSlam Nokia – High Accuracy Indoor Positioning(HAIP) based on Bluetooth 4.0 Low Energy

Techniques LED Bluetooth Inertial Positioning Systems Wi-Fi positioning system Combination of techniques

Wi-Fi based positioning Floorplan The most important component of an interior positioning system Without floorplan, accuracy doesn’t matter

Wi-Fi based positioning Databases of routers Large companies keep databases of wireless access points Terms of service allows them to use your gps coordinates to help geolocate routers Opt out mechanism Add _nomap to the end of your SSID on your router Ex; If SSID of router is IUP123, change to IUP123_nomap

Wi-Fi based positioning Trilateration using RSSI RSSI(Received Signal Strength Indicator) Distance is inversely proportional to signal strength

Wi-Fi based positioning Trilateration not accurate enough due to interference with Wi-Fi signals Fingerprinting Training phase – build a radiomap of observed frequencies of known locations Real phase – match received signal to radiomap to determine location Combination with inertial systems

Challenges Access to indoors/floorplans Wi-Fi noise Privacy Apple Indoor maps is going to make you walk off the second story at a mall

Future of Indoor Mapping Indoor location technology market will be ~ 5 billion by 2018 Accuracy should improve with more research and more data being gathered by smartphones

Conclusion Indoor positioning systems are a growing industry/technology that have the power to improve many aspects of our day to day lives There are challenges to implementing these systems, but solutions are being found to develop accuracy and reliability

References brings-over indoor-floor-plans-to-the-desktop/ brings-over indoor-floor-plans-to-the-desktop/ 0-arrives-on-android-lets-you-map-inside-buildings/ 0-arrives-on-android-lets-you-map-inside-buildings/ charting-the-future/ charting-the-future/ cool-ips-will-blow-your-mind cool-ips-will-blow-your-mind projects/wi-fi-indoor-positioning-system projects/wi-fi-indoor-positioning-system helps-you-find-needle-in-a-haystack/ helps-you-find-needle-in-a-haystack/