Locating a wireless station
First Claim
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1. A method in a communication system for providing location information of a wireless station, the method comprising:
- accomplishing at least one measurement that may be used for determining the location of the wireless station by an element that associates with the communication system;
defining an estimate of the location of the wireless station based on the at least one measurement, wherein the estimate is defined by using at least one approximation;
subjecting the estimate to a non-linear measurement error minimisation routine; and
outputting location information of the wireless station based on the results of the minimisation routine.
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Abstract
The present invention relates to provision of location information concerning a wireless station of a communication system. In accordance with the method, at least one location measurement is accomplished by an element that associates with the communication system. An estimate for the location of the wireless station is defined based on the at least one measurement. The estimate is subjected to a non-linear measurement error minimisation routine to determine more accurate location of the wireless station.
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24 Claims
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1. A method in a communication system for providing location information of a wireless station, the method comprising:
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accomplishing at least one measurement that may be used for determining the location of the wireless station by an element that associates with the communication system;
defining an estimate of the location of the wireless station based on the at least one measurement, wherein the estimate is defined by using at least one approximation;
subjecting the estimate to a non-linear measurement error minimisation routine; and
outputting location information of the wireless station based on the results of the minimisation routine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 20)
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15. A location system that associates with a cellular communication system for providing location information of a wireless station of the cellular communication system, the system comprising:
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an element that associates with the cellular communication system for accomplishing at least one measurement that may be used for determining a location estimate for the wireless station;
a controller for defining the location estimate for the wireless station based on the at least one measurement, wherein the controller is adapted to use at least one approximation for the estimate, and for subsequently subjecting the estimate to a non-linear measurement error minimisation routine; and
interface means for outputting location information of the wireless station based on the results of the minimisation routine. - View Dependent Claims (16, 17, 18, 19)
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21. A wireless station for a communication system, the wireless station comprising:
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means for handling information concerning at least one measurement that relates to the location of the wireless station;
a controller for defining a location estimate for the wireless station based on the information concerning the at least one measurement, the controller being adapted to subject the estimate to a non-linear measurement error minimization routine; and
interface means for outputting location information of the wireless station based on the results of the minimisation routine. - View Dependent Claims (22, 23, 24)
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Specification