Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Location Awareness f

1. Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Location Awareness for Low Rate Data Devices] Date Submitted: [6 Nov, 2000] Source: [Michael R Derby] Company [Time Domain] Address [7057 Old Madison Pike, Huntsville, AL, 35806] Voice:[256 922 9229], FAX: [256 922 0387], E-Mail:[mike.derby@timedomain.com] Re: [LRSG] Abstract: [Location Awareness for Low Rate Data Devices] This document describes possible location awareness applications and briefly describes TM-UWB mechanisms for determining position of transceivers. Purpose: [Support of LRSG PAR] Notice: This document has been prepared to assist the IEEE P802.15. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P802.15.

2. LRSG - Location Awareness Provide location awareness and low rate communications. Tracking of assets, people, forklifts or anything that can move in various environments including industrial, retail, hospital, residential or office, while maintaining low rate data communications for equipment monitoring, messaging or controls.

3. Example Asset tracking: Hospitals –expensive equipment, Doctors. Home – remote control, wallet, keys, phone, elderly and children. Office – employees, computers. Industrial – Forklifts, bales of cotton, products Airlines – baggage

4. Example Shoppers in retail markets: • Push marketing and p-commerce. • Influence of buying decisions at the point of sale. • Targeted E-coupons. • Optimization of store layout.

5. Example Firemen in burning building: • Where are they? • What are their vital signs? • How much Oxygen do they have remaining? • Where am I?

6. Example Position Awareness: • Autonomous robotic controls. • Amusement park guests. • Mall shoppers. • Corporate visitors.

7. How does it work? • On the surface - similar to GPS but a technically a little different

8. 3D Tracking • 4 fixed plus 1 mobile transceiver • Solve for XYZ of the mobile “M” unit using ranges to the 4 fixed units F3 F2 M NC x Here I am ! M = mobile unit F = fixed units NC = network controller F4 Instrumented Range Visualization F1

9. Ranging Measurement • Range determined from the time of flight of Time Modulated Ultra-wide Band pulses. • Departing pulse time is known, arrival time is observed, time of flight is the difference between these.

10. Leading Edge Detection Line of sight impulse response function Baseband Amplitude Leading edge Detected Time (ns) Zoom in Baseband Amplitude Time (ns)

11. Leading Edge Detection Non Line of sight impulse response function Baseband Amplitude Leading edge Detected Time (ns) Zoom in Baseband Amplitude Time (ns)

12. State of the technology • Current: [COMDEX Demo] • 2 Hz refresh rate • Accuracy to 10cm • Multilaterization using 4 fixed stations. • Concurrent with Data Payload of 32Kbits • Theoretical: • accuracy to <1cm • 1000+ Hz refresh for a 1000’s of tracked items.