APPARATUS AND METHOD FOR ESTIMATING THE LOCATION OF A PORTABLE TERMINAL
First Claim
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1. A method of operating a portable terminal, the method comprising:
- determining whether a reference location corresponding to a cell IDentifier (ID) of a currently connected cell is prestored when a location estimation function is activated;
determining a search frequency range of a Global Positioning System (GPS) signal using the stored reference location; and
estimating a location of the portable terminal using the GPS signal detected in the search frequency range.
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Abstract
An apparatus and method for location estimation in a portable terminal are provided. An operation of the portable terminal includes, if a location estimation function is activated, determining whether a reference location corresponding to a cell IDentifier (ID) of a currently connected cell is prestored, determining a search frequency range of a Global Positioning System (GPS) signal using the stored reference location, and estimating a location of the portable terminal using the GPS signal detected in the search frequency range.
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Citations
16 Claims
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1. A method of operating a portable terminal, the method comprising:
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determining whether a reference location corresponding to a cell IDentifier (ID) of a currently connected cell is prestored when a location estimation function is activated; determining a search frequency range of a Global Positioning System (GPS) signal using the stored reference location; and estimating a location of the portable terminal using the GPS signal detected in the search frequency range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A portable terminal apparatus, the apparatus comprising:
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a controller for determining whether a reference location corresponding to a cell IDentifier (ID) of a currently connected cell is prestored when a location estimation function is activated; and a Global Positioning System (GPS) module for determining a search frequency range of a GPS signal using the stored reference location and for estimating a location of the portable terminal using the GPS signal detected in the search frequency range. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification