METHOD AND SYSTEM TO ESTIMATE VEHICLE TRAFFIC CONDITIONS
First Claim
1. A system to estimate vehicle traffic conditions for use in a vehicle navigation system comprising:
- a cellular network which receives position data from a plurality of GPS enabled cellular telephones,a cellular network processor programmed to estimate traffic conditions on at least one road link based on said position data,a transmitter which transmits said estimated traffic conditions to automotive vehicles containing a navigation system,a navigation processor contained in said navigation systems which utilize said estimated traffic conditions for route and/or arrival time calculations.
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Abstract
A method and system to estimate vehicle traffic conditions for use in a vehicle navigation system. The system includes a cellular network which receives position data from a plurality of GPS enabled cellular telephones. A processor in the cellular network is programmed to estimate the traffic conditions or density of traffic on at least one road link based upon the received position data while a transmitter at the base station then transmits that estimated traffic condition to automotive vehicles containing navigation systems. A processor in the navigation system then utilizes the estimated traffic conditions for route and/or arrival time calculations.
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Citations
15 Claims
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1. A system to estimate vehicle traffic conditions for use in a vehicle navigation system comprising:
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a cellular network which receives position data from a plurality of GPS enabled cellular telephones, a cellular network processor programmed to estimate traffic conditions on at least one road link based on said position data, a transmitter which transmits said estimated traffic conditions to automotive vehicles containing a navigation system, a navigation processor contained in said navigation systems which utilize said estimated traffic conditions for route and/or arrival time calculations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method to estimate traffic conditions for use in vehicle navigation systems comprising the steps of:
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receiving position data from GPS enabled cellular telephones in a cellular network, said cellular network estimating traffic conditions along at least one road link based on the received position data, transmitting the estimated traffic conditions to automotive vehicles containing navigation systems, said navigation systems utilizing the transmitted estimated traffic conditions in route and/or arrival time calculations. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification