1 (For introduction) Rosum Recognition and Awards May 2005 – Rosum named a Red Herring 100 Technology Company. 100 top start-up technology companies. October 2005 – MIT Technology Review named CTO Matthew Rabinowitz to the TR35, the list of the top 35 technology minds under age 35. December 2005 – World Economic Forum has selected Rosum for its Technology Pioneer Award as an innovative, transformational technology with long-term market and societal impact. January 2006 – Rosum named Frost & Sullivan 2006 Technology of the Year for its VoIP-911 caller location technology.
Transcript
1
(For introduction)
Rosum Recognition and Awards
May 2005 – Rosum named a Red Herring 100 Technology Company. 100 top start-up technology companies.
October 2005 – MIT Technology Review named CTO Matthew Rabinowitz to the TR35, the list of the top 35 technology minds under age 35.
December 2005 – World Economic Forum has selected Rosum for its Technology Pioneer Award as an innovative, transformational technology with long-term market and societal impact.
January 2006 – Rosum named Frost & Sullivan 2006 Technology of the Year for its VoIP-911 caller location technology.
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Click to edit Master title style
TV-Positioning for Mobile Applications
Dr. Matthew RabinowitzCo-Founder and CTO
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Broadcast TV Provides Indoor, Urban Visibility
• Vertical Signals
• Low Power
• High Frequency
• Narrow Spectrum
Advantages of TV over GPS:
• High Power 1MW ERP typical (1000x GPS)• Low Frequency
50-750 MHz (stronger indoor signals)
• Horizontal Signals Less attenuation from walls than roofs
• Frequency Diversity Clear 6MHz channels, multiple channels per tower
~40 dB (10,000X) indoor power advantage
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Terrestrial TV coverage provides a pre-built positioning infrastructure
• Terrestrial broadcast TV infrastructure is highly correlated with centers of population and commerce.
• In the US, 2800 towers broadcast more than 4500 analog and digital TV signals.
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How TV-Positioning Works
5) Location Server computes position
Regional Monitor Unit covers 50-100km radius; sees same signals as mobile
device
3) Device passes information to Location Server
4) Aiding data
2) Rosum-enabled device receives TV signals and computes pseudoranges
1) Broadcasts contain synchronization information which can be used to measure timing.
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Wide-Area Location Technology Comparison
Rural
Suburban
Urban
Dense Urban
Indoor
Accuracy (m)
En
viro
nm
ent
1 10 50 100 500 1km 10km
Cell ID & Enhanced Cell ID
A-GPS
RosumTV-GPS
Sources: company websites; carrier E911 compliance filings; Nokia documents; Rosum field testing
U-TDOA
GPS
WiFi
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What TV delivers: Reliable location in the most challenging RF environments…
MEDIAN CEP – 67% CEP – 95%
48m 58m 95m
Downtown San Francisco Urban Canyon
Montgomery BART Station
Ticket level, one floor below ground.
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…And GPS-level accuracy in clear line-of-sight environments
MEDIAN CEP – 67% CEP – 95%
5m 5m 13m
Open sky test. Rosum roof, Redwood City.
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Rosum vs. High-Sensitivity A-GPS
Rosum @ San Mateo County Parking GarageRosum @ Fisherman’s Wharf Parking Deck
High-sensitivity A-GPS device taken outside to open-sky area for five minutes and allowed to acquiresatellites, ephemeris data. Then the device was taken into the test area beside the Rosum devicewhere it lost the ability to tracking all satellites within 1 minute. Rosum was e9-1-1 compliant.
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Mobile TV → Indoor Location
• ABI, Informa predict ~155M TV-tuner enabled mobile devices in 2010.
• TV tuner enables Rosum Software-only solution for the location of mobile devices
• Mobile TV transmitters (DVB-H, FLO, etc) can enhance existing TV coverage, further improving reliability, accuracy
