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Traffic data transmission from a vehicle telematics unit

  • US 8,626,208 B2
  • Filed: 06/30/2008
  • Issued: 01/07/2014
  • Est. Priority Date: 06/30/2008
  • Status: Active Grant
First Claim
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1. A method for sending traffic information to a call center using a telematics unit of a vehicle, the method comprising:

  • (a) transmitting data measured by vehicle system modules to the telematics unit;

    (b) identifying a portion of the data transmitted to the telematics unit in step (a) as traffic related data;

    (c) detecting that vehicle deceleration occurs more than a predefined number of times within a certain time period;

    (d) determining, based on the vehicle deceleration occurring more than a predefined number of times within a certain time period, that the portion of the data that has been identified as traffic related data will be transmitted to the call center; and

    (e) creating a message string containing the traffic related data;

    (f) generating a short message system (SMS) message;

    (g) automatically determining if there is any non-traffic related data at the vehicle to be sent to the call center using the telematics unit in response to generating the SMS message and, if so;

    (g1) receiving the non-traffic related data at the telematics unit; and

    (g2) automatically embedding the message string containing the traffic related data into a portion of the SMS message that is unused by a short message service and including non-traffic related data obtained at the vehicle in a payload section of the SMS message; and

    (h) transmitting the message to the call center using the telematics unit.

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