POSITIONING SYSTEM, POSITIONING METHOD, AND POSITIONING PROGRAM
First Claim
1. A positioning system which estimates a position of a receiver having a radio communication function and a function to receive a signal used in GPS positioning, the positioning system comprising:
- radio communication information acquiring means to acquire information about radio communication in the receiver;
effectiveness estimating means to estimate effectiveness of the GPS positioning, based on the information about the radio communication acquired by the radio communication information acquiring means; and
GPS positioning controlling means to control execution of the GPS positioning of the receiver, based on the effectiveness estimated by the effectiveness estimating means.
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Accused Products
Abstract
An object of the present invention is to obtain a positioning result according to a condition of a receiver in a shorter period of time. A positioning server 10 is a positioning system which estimates a position of a cellular terminal 20 having a cellular communication function and a function to receive a signal used in GPS positioning. The positioning server 10 is provided with a radio communication information acquiring unit 14 to acquire information about cellular communication in the cellular terminal 20, an effectiveness estimating unit 15 to estimate the effectiveness of the GPS positioning, based on the information about cellular communication, and a GPS positioning control unit 17 to control execution of the GPS positioning of the cellular terminal 20, based on the estimated effectiveness.
42 Citations
17 Claims
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1. A positioning system which estimates a position of a receiver having a radio communication function and a function to receive a signal used in GPS positioning, the positioning system comprising:
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radio communication information acquiring means to acquire information about radio communication in the receiver; effectiveness estimating means to estimate effectiveness of the GPS positioning, based on the information about the radio communication acquired by the radio communication information acquiring means; and GPS positioning controlling means to control execution of the GPS positioning of the receiver, based on the effectiveness estimated by the effectiveness estimating means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A positioning method of estimating a position of a receiver having a radio communication function and a function to receive a signal used in GPS positioning, the positioning method comprising:
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a radio communication information acquiring step of acquiring information about radio communication in the receiver; an effectiveness estimating step of estimating effectiveness of the GPS positioning, based on the information about the radio communication acquired in the radio communication information acquiring step; and a GPS positioning controlling step of controlling execution of the GPS positioning of the receiver, based on the effectiveness estimated in the effectiveness estimating step.
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17. A positioning program for letting a computer estimate a position of a receiver having a radio communication function and a function to receive a signal used in GPS positioning, the positioning program letting the computer execute:
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a radio communication information acquiring function to acquire information about radio communication in the receiver; an effectiveness estimating function to estimate effectiveness of the GPS positioning, based on the information about the radio communication acquired by the radio communication information acquiring function; and a GPS positioning controlling function to control execution of the GPS positioning of the receiver, based on the effectiveness estimated by the effectiveness estimating function.
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Specification