Using cellular phones as probes
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Using cellular phones as probes. Jean-Luc Ygnace Y.B Yim. Driving forces. More than 60 millions cell phone subscribers The telematics market is organized around cellular communications

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Using cellular phones as probes l.jpg

Using cellular phones as probes

Jean-Luc Ygnace

Y.B Yim


Driving forces l.jpg
Driving forces

  • More than 60 millions cell phone subscribers

  • The telematics market is organized around cellular communications

  • Through the E-911 mandate the carriers must implement Automatic Location Identification (ALI) technologies by October 2001 (network or handset) to handle the 30,000 daily 911 calls

  • Virtually all leading vendors agree the next generation wireless technology will be based on CDMA (datacomm market research)


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New challenges

  • The cell phone positioning technology can be used to estimate travel times

  • The positioning technology is well suited to be combined with other sources of information (loops, tags, taxi probes, etc.)




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The BayArea estimates

  • We evaluate the percentage of cars traveling with a digital cell phone « on » up to 11.6% on the freeway at commuting time

  • Considering a carrier like Cellular One only, this percentage would be around 5%




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Cost figures period

  • (E-911) 800 cell stations x $ 20,000 : $16,000,000

  • (E-911) user charge 65c/ month

  • ~ $15,600,000/year

  • Air time cost estimates : to be done


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