Equipment for the calculation of mobile handset position
First Claim
1. Equipment for calculating a mobile handset position by using a cellular radio wave, comprising:
- a signal receiver for receiving a cellular radio wave to generate a reception signal;
a position calculation information generator for generating position calculation information necessary for position calculation by using the reception signal;
a base station selection unit for selecting base stations available for position calculation according to the position calculation information;
a base station number counter for counting the number of base stations selected by the base station selection unit;
a position calculation method controller for generating, according to the number of selected base stations, a position calculation method control signal to control the position calculation method;
a position calculation unit for calculating, according to the position calculation method specified by the position calculation method control signal, the mobile handset position from the position calculation information and the information on the base stations selected by the base station selection unit; and
a position information application unit for using the mobile handset position to provide a user with information.
6 Assignments
0 Petitions
Accused Products
Abstract
Even in areas where signals from only two or less base stations are available for position calculation, the mobile handset position can be calculated, expanding the position information service area and improving the usefulness. When the number of base stations available for position calculation is three or more, the position calculation is performed based on trilateration. When the number of available base stations is two or one, the position calculation is performed by using a two-station-based position calculation method or a one-station-based position calculation method according to the number of available base stations.
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Citations
12 Claims
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1. Equipment for calculating a mobile handset position by using a cellular radio wave, comprising:
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a signal receiver for receiving a cellular radio wave to generate a reception signal;
a position calculation information generator for generating position calculation information necessary for position calculation by using the reception signal;
a base station selection unit for selecting base stations available for position calculation according to the position calculation information;
a base station number counter for counting the number of base stations selected by the base station selection unit;
a position calculation method controller for generating, according to the number of selected base stations, a position calculation method control signal to control the position calculation method;
a position calculation unit for calculating, according to the position calculation method specified by the position calculation method control signal, the mobile handset position from the position calculation information and the information on the base stations selected by the base station selection unit; and
a position information application unit for using the mobile handset position to provide a user with information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for calculating a mobile handset position by using a cellular radio wave, comprising the steps of:
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receiving a cellular radio wave to generate a reception signal;
generating position calculation information necessary for position calculation by using the reception signal;
selecting base stations available for position calculation according to the position calculation information;
counting the number of base stations available for the position calculation and, according to the number of available base stations, generating a position calculation method control signal to control a position calculation method; and
calculating, according to the position calculation method specified by the position calculation method control signal, the mobile handset position from the position calculation information and the information on the base stations selected by the base station selection unit. - View Dependent Claims (12)
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Specification