Thin client intelligent transportation system and method for use therein
First Claim
1. A method for intelligent traffic management, comprising the steps of:
- receiving Global Navigation Satellite System (GNSS) signals on a mobile client node;
determining position information on the mobile client node based at least in part on the GNSS signals;
transmitting the position information to a roadside system;
determining on the roadside system a road position of the mobile client node based at least in part on the position information and geospatial roadmap data stored on the roadside system; and
generating an application result based at least in part on the road position.
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Abstract
A thin client intelligent transportation system wherein geospatial roadmaps and map matching systems are maintained in roadside nodes and are more fully exploited. The thin client approach offers significant advantages over thick client approaches that rely on on-vehicle maps and map matching systems, including reduced complexity of on-board equipment and elimination of map integrity issues. The thin client approach also offers significant advantages over systems wherein the vehicle is required to access maps and map matching systems in real-time from a remote data center, including the ability to meet the low latency requirements for many vehicle safety applications. The present invention in some embodiments has added advantages in that it exploits roadside maps and map matching systems in revenue generating applications that are not directly related to passenger safety.
173 Citations
25 Claims
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1. A method for intelligent traffic management, comprising the steps of:
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receiving Global Navigation Satellite System (GNSS) signals on a mobile client node;
determining position information on the mobile client node based at least in part on the GNSS signals;
transmitting the position information to a roadside system;
determining on the roadside system a road position of the mobile client node based at least in part on the position information and geospatial roadmap data stored on the roadside system; and
generating an application result based at least in part on the road position. - View Dependent Claims (2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A thin client intelligent transportation system, comprising:
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at least one mobile client node;
a roadside system comprising at least one roadside node; and
a wireless network communicatively coupling the mobile client node and the roadside system, wherein the mobile client node is adopted to transmit position information to the roadside system via the wireless network, receive an application result from the roadside system generated based at least in part on the position information and geospatial roadmap data stored on the roadside system and take action based at least in part on the application result.
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18. A roadside system, comprising:
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a wireless communication interface;
a geospatial roadmap database; and
a processing element communicatively coupled with the wireless communication interface and the geospatial roadmap database, wherein the processing element is adapted to determine a road position of a mobile client node based at least in part on position information received from the mobile client node via the wireless communication interface and geospatial roadmap data from the geospatial roadmap database. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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25. A mobile client node, comprising:
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a GNSS receiver;
a wireless communication interface; and
a processing element communicatively coupled with the GNSS receiver and the wireless communication interface, wherein the processing element is adapted to determine position information based at least in part on information received from the GNSS receiver and transmit the position information to a roadside system via the wireless communication interface, and in response to the position information receive an application result from the roadside system via the wireless communication interface.
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Specification