WIRELESS POSITIONING METHOD AND APPARATUS
First Claim
1. A wireless positioning method of a receiver, the method comprising:
- receiving signals from a plurality of transmitters;
determining a propagation delay tap of each of the plurality of transmitters received from the plurality of transmitters, respectively;
calculating the distance between the receiver and each of the transmitters, respectively;
correcting the distances by using the propagation delay taps of the respective transmitters to determine a final distance between the receiver and each of the transmitters; and
estimating an area, in which circles away by the final distances between the receiver and each of the transmitters on the basis of the center of each of the transmitters overlap with each other, as the location of the receiver.
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Accused Products
Abstract
A wireless positioning method of a receiver is provided. Signals are received from a plurality of transmitters, propagation taps of the plurality of transmitters received from the plurality of transmitters are determined, respectively, the distance between the receiver and each of the transmitters is calculated, respectively, the distances are corrected by using propagation delay taps of the respective transmitters to determine final distances between the receiver and each of the transmitters, and an area, in which circles away by the final distances between the receiver and each of the transmitters on the basis of the center of each of the transmitters overlap with each other, is estimated as the location of the receiver. Thus, an error of wireless positioning according to a propagation environment can be reduced.
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Citations
16 Claims
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1. A wireless positioning method of a receiver, the method comprising:
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receiving signals from a plurality of transmitters; determining a propagation delay tap of each of the plurality of transmitters received from the plurality of transmitters, respectively; calculating the distance between the receiver and each of the transmitters, respectively; correcting the distances by using the propagation delay taps of the respective transmitters to determine a final distance between the receiver and each of the transmitters; and estimating an area, in which circles away by the final distances between the receiver and each of the transmitters on the basis of the center of each of the transmitters overlap with each other, as the location of the receiver. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A wireless positioning method of a receiver, the method comprising:
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receiving signals from a plurality of transmitters; determining a propagation environment between the receiver and each of the transmitters by using types of propagation delay taps with respect to the signals received from the plurality of transmitters; calculating the distance between the receiver and each of the transmitters, respectively, by using an arrival time of a first reached propagation delay tap among the propagation delay taps of the transmitters; correcting the distances on the basis of the propagation environments to determine a final distance between the receiver and each of the transmitters; and estimating an area commonly satisfying the final distances, as the location of the receiver. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A wireless positioning apparatus of a receiver, the apparatus comprising:
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a propagation environment determining unit configured to determine propagation delay taps with respect to signals transmitted from a plurality of transmitters; a distance calculation unit configured to calculate the distance between the receiver and each of the transmitters; a distance correction unit configured to correct the distances by using the propagation delay taps of the respective transmitters to calculate a final distance between the receiver and each of the transmitters; and a location estimation unit configured to estimate an area, in which circles away by the final distances between the receiver and each of the transmitters on the basis of the center of each of the transmitters overlap with each other, as the location of the receiver. - View Dependent Claims (14, 15, 16)
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Specification