Radio signal strength mapping through a telematics system
First Claim
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1. A method of determining a radio-frequency signal strength at a mobile vehicle, comprising:
- receiving, at an in-vehicle telematics unit, a signal strength measurement request from a call center for a selected radio broadcast frequency;
measuring a signal strength of the selected radio broadcast frequency at the mobile vehicle, wherein measuring the signal strength includes sending a signal strength measurement command message through a vehicle communication bus to a radio receiver in the mobile vehicle, and receiving the measured signal strength at the in-vehicle telematics unit; and
sending the measured signal strength to the call center.
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Abstract
The invention provides a method of and system for determining a radio-frequency signal strength at a mobile vehicle. A signal strength measurement request is received from a call center for a selected radio frequency, a signal strength of the selected radio frequency is measured at the mobile vehicle, and the measured signal strength is sent to the call center.
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Citations
29 Claims
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1. A method of determining a radio-frequency signal strength at a mobile vehicle, comprising:
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receiving, at an in-vehicle telematics unit, a signal strength measurement request from a call center for a selected radio broadcast frequency; measuring a signal strength of the selected radio broadcast frequency at the mobile vehicle, wherein measuring the signal strength includes sending a signal strength measurement command message through a vehicle communication bus to a radio receiver in the mobile vehicle, and receiving the measured signal strength at the in-vehicle telematics unit; and sending the measured signal strength to the call center. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A computer usable medium containing a program to determine a radio-frequency signal strength at a mobile vehicle, comprising:
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computer program code to receive, at an in-vehicle telematics unit, a signal strength measurement request from a call center for a selected radio broadcast frequency; computer program code to measure a signal strength of the selected radio broadcast frequency at the mobile vehicle, wherein the computer program code to measure the signal strength includes a computer program code to send a signal strength measurement command message through a vehicle communication bus to a radio receiver in the mobile vehicle, and computer program code to receive the measured signal strength at an in-vehicle telematics unit; and computer program code to send the measured signal strength to the call center. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A system for determining a radio-frequency signal strength at a mobile vehicle, comprising:
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means for receiving, at an in-vehicle telematics unit, a signal strength measurement request from a call center for a selected radio broadcast frequency; means for measuring a signal strength of the selected radio broadcast frequency at the mobile vehicle, the means for measuring the signal strength including means for sending a signal strength measurement command message through a vehicle communication bus to a radio receiver in the mobile vehicle, and means for receiving the measured signal strength at an in-vehicle telematics unit; and means for sending the measured signal strength to the call center. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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29. A method of determining a radio-frequency signal strength at a mobile vehicle, comprising:
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receiving, at an in-vehicle telematics unit, a signal strength measurement request from a call center for a radio broadcast frequency selected from an AM radio frequency, an FM radio frequency, and a satellite radio frequency; measuring a signal strength of the selected radio broadcast frequency at the mobile vehicle, wherein measuring the signal strength comprises sending a signal strength measurement command message through a vehicle communication bus to a radio receiver in the mobile vehicle, and receiving the measured signal strength at an in-vehicle telematics unit; determining a set of location coordinates of the mobile vehicle; sending the measured signal strength and the set of location coordinates to the call center; and generating a radio propagation map from the measured signal strengths and the set of location coordinates.
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Specification