Method and system for applying wireless geolocation technology
First Claim
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1. In a wireless communication system having plural base stations defining a signal coverage area for communication with a mobile-appliance located within the coverage area, a method of determining the position within the coverage area of mobile-appliance location determining sensors, comprising the steps of:
- (a) determining for each of the plural base stations the capability to receive signals from a mobile appliance;
(b) estimating the transmit power level of the mobile appliance at a selected geographic point in the coverage area;
(c) estimating for each of the plural base stations, the strength of a signal from the mobile-appliance transmitted at the estimated power level from the selected geographic point;
(d) identifying each of the plural base stations estimated to receive a signal above a predetermined threshold from the mobile-appliance;
(e) estimating the accuracy of a calculated position of the mobile-appliance from the estimate of the signal strength received at the identified base stations; and
(f) determining the position of mobile-appliance location determining sensors in the coverage area needed to provide the estimated location determining accuracy within a predetermined threshold.
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Abstract
A system and method for determining the positioning of mobile-appliance location determining sensors in a mobile-appliance communications network by estimating the positioning accuracy of the sensors.
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Citations
21 Claims
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1. In a wireless communication system having plural base stations defining a signal coverage area for communication with a mobile-appliance located within the coverage area, a method of determining the position within the coverage area of mobile-appliance location determining sensors, comprising the steps of:
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(a) determining for each of the plural base stations the capability to receive signals from a mobile appliance;
(b) estimating the transmit power level of the mobile appliance at a selected geographic point in the coverage area;
(c) estimating for each of the plural base stations, the strength of a signal from the mobile-appliance transmitted at the estimated power level from the selected geographic point;
(d) identifying each of the plural base stations estimated to receive a signal above a predetermined threshold from the mobile-appliance;
(e) estimating the accuracy of a calculated position of the mobile-appliance from the estimate of the signal strength received at the identified base stations; and
(f) determining the position of mobile-appliance location determining sensors in the coverage area needed to provide the estimated location determining accuracy within a predetermined threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 20)
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16. A system for determining the position area of mobile-appliance location determining sensors in a mobile-appliance communication system having plural base stations defining a signal coverage area comprising:
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(a) means for determining for each of the plural base stations the capability to receive signals from a mobile appliance;
(b) means for estimating the transmit power level of the mobile appliance at a selected geographic point in the coverage area;
(c) means for estimating for each of the plural base stations, the strength of a signal from the mobile-appliance transmitted at the estimated power level from the selected geographic point;
(d) means for identifying each of the plural base stations estimated to receive a signal above a predetermined threshold from the mobile-appliance;
(e) means for estimating the accuracy of the calculated position of the mobile-appliance from the estimate of the signal strength received at the identified base stations; and
(f) means for determining the position of mobile-appliance location determining sensors in the coverage area needed to provide the estimated location determining accuracy within a predetermined threshold.
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18. In a mobile-appliance communication system with plural base stations, a method of positioning location sensors for determining the location of a mobile-appliance within a predetermined accuracy, wherein the location determining sensors are positioned at some but not all of the plural base stations based on an estimated accuracy of the location calculated by the location determining sensors and the costs of the location determination sensors.
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19. In a mobile-appliance communication system with plural base stations defining a signal coverage area, a method of positioning location sensors for determining the location of a mobile-appliance within a predetermined accuracy, wherein the location determining sensors are positioned based on minimizing the number of sensors required for the coverage area.
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21. In a mobile-appliance communication system with plural base stations, a method of positioning location sensors for determining the location of a mobile-appliance within a predetermined accuracy, wherein the location determining sensors are positioned at some but not all of the plural base stations without requiring measurement of the communication signals between the plural base stations and the mobile appliance.
Specification