Apparatus and method for providing position information of wireless terminal
First Claim
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1. An apparatus for providing position information of a wireless terminal, comprising:
- a signal receiver for estimating a position of the wireless terminal using a wireless signal received from a satellite or a base station;
a sensor for detecting a position of the wireless terminal using dead reckoning; and
a controller for determining whether or not a reception state of the wireless signal is good using the position estimated by the signal receiver, map-matching the position estimated by the signal receiver when the reception state is good, and map-matching the position detected by the sensor when the reception state is not good.
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Abstract
An apparatus and method for providing position information of a wireless terminal are provided. The apparatus map-matches a position estimated using a wireless signal received from a satellite or a base station to output the map-matched result when a reception state of the wireless signal is good, and map-matches a position detected by dead reckoning to output the map-matched result when the reception state of the wireless signal is not good, thereby enabling a user to correctly detect the position of the wireless terminal regardless of the reception state of the wireless signal received from the satellite or the base station.
26 Citations
16 Claims
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1. An apparatus for providing position information of a wireless terminal, comprising:
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a signal receiver for estimating a position of the wireless terminal using a wireless signal received from a satellite or a base station; a sensor for detecting a position of the wireless terminal using dead reckoning; and a controller for determining whether or not a reception state of the wireless signal is good using the position estimated by the signal receiver, map-matching the position estimated by the signal receiver when the reception state is good, and map-matching the position detected by the sensor when the reception state is not good. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of providing position information of a wireless terminal, comprising:
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estimating a position of the wireless terminal using a wireless signal received from a satellite or a base station; detecting a position of the wireless terminal using dead reckoning; determining whether or not a reception state of the wireless signal is good using the estimated position; and map-matching the estimated position when the reception state is good, and map-matching the position detected by dead reckoning when the reception state is not good. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification