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November 2000
Slide 1
doc.: IEEE 802.15-00/363
Submission
Michael R. Derby, Time Domain
Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)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:[[email protected]]
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.
November 2000
Slide 2
doc.: IEEE 802.15-00/363
Submission
Michael R. Derby, Time Domain
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.
November 2000
Slide 3
doc.: IEEE 802.15-00/363
Submission
Michael R. Derby, Time Domain
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
November 2000
Slide 4
doc.: IEEE 802.15-00/363
Submission
Michael R. Derby, Time Domain
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.
November 2000
Slide 5
doc.: IEEE 802.15-00/363
Submission
Michael R. Derby, Time Domain
Example
Firemen in burning building:– Where are they?– What are their vital signs? – How much Oxygen do they have remaining?
– Where am I?
November 2000
Slide 6
doc.: IEEE 802.15-00/363
Submission
Michael R. Derby, Time Domain
Example
Position Awareness:- Autonomous robotic controls.- Amusement park guests.- Mall shoppers.- Corporate visitors.
November 2000
Slide 7
doc.: IEEE 802.15-00/363
Submission
Michael R. Derby, Time Domain
How does it work?
• On the surface - similar to GPS but a technically a little different
November 2000
Slide 8
doc.: IEEE 802.15-00/363
Submission
Michael R. Derby, Time Domain
3D Tracking
• 4 fixed plus 1 mobile transceiver
• Solve for XYZ of the mobile “M” unit using ranges to the 4 fixed units
x
F1
F2
F3
F4
M
Instrumented Range
NC
Visualization
Here I am !
M = mobile unit
F = fixed units
NC = network controller
November 2000
Slide 9
doc.: IEEE 802.15-00/363
Submission
Michael R. Derby, Time Domain
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.
November 2000
Slide 10
doc.: IEEE 802.15-00/363
Submission
Michael R. Derby, Time Domain
Leading Edge Detection
Line of sight impulse response function
Zoom in
Leading edge Detected
Time (ns)
Time (ns)
Bas
eban
d A
mpl
itud
e
Bas
eban
d A
mpl
itud
e
November 2000
Slide 11
doc.: IEEE 802.15-00/363
Submission
Michael R. Derby, Time Domain
Leading Edge Detection
Non Line of sight impulse response function
Zoom in
Leading edge Detected
Time (ns)
Time (ns)
Bas
eban
d A
mpl
itud
e
Bas
eban
d A
mpl
itud
e
November 2000
Slide 12
doc.: IEEE 802.15-00/363
Submission
Michael R. Derby, Time Domain
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.
