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Method and system for collecting traffic data

  • US 7,142,977 B2
  • Filed: 05/04/2004
  • Issued: 11/28/2006
  • Est. Priority Date: 11/05/2001
  • Status: Expired due to Fees
First Claim
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1. Method for collecting traffic data with the aid of a mobile station network and terminal equipment in vehicles to be observed, the method comprising:

  • defining areas in the mobile station network, wherein the terminal equipment communicates with the network using one or more predetermined messages,determining a first time by a first clock with a subscriber identity stored based on a message between the network and the terminal equipment and relating to a first area,determining a second time by a second clock with a subscriber identity stored based on a message between the network and the same terminal equipment and relating to a second area, andusing the first time and the second time to obtain traffic data about the vehicle moving the terminal equipment byselecting clock pairs based on the subscriber identity/subscriber identities, calculating differences of the selected time by the clock pairs,the calculated differences are collected to form a statistic distribution, anda characteristic magnitude is calculated for the statistic distribution.

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