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;
calculating the weight of each of the transmitters by using each of the propagation delay taps;
adjusting each of the distances by using each of the weights; and
estimating an area, in which circles away by the adjusted distances between the receiver and each of the transmitters on the basis of each of the transmitters overlap with each other, as the location of the receiver.
1 Assignment
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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 weight of each of the transmitters is calculated by using each of the propagation delay tap, the distance is adjusted by using the weight of each of the transmitters, and an area, in which circles away by the adjusted distances between the receiver and each of the transmitters on the basis 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.
16 Citations
14 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; calculating the weight of each of the transmitters by using each of the propagation delay taps; adjusting each of the distances by using each of the weights; and estimating an area, in which circles away by the adjusted distances between the receiver and each of the transmitters on the basis of each of the transmitters overlap with each other, as the location of the receiver. - View Dependent Claims (2, 3, 4, 5)
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6. 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; 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 respective transmitters; and determining the location of the receiver by using the distance and a delay spread value. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A wireless positioning apparatus of a receiver, the apparatus comprising:
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a signal receiving unit configured to receive signals from a plurality of transmitters; a propagation delay tap determining unit configured to determine propagation delay taps of the plurality of transmitters received from the plurality of transmitters; a distance calculation unit configured to calculate the distance between the receiver and each of the transmitters, respectively; a weight calculation unit configured to calculate the weight of each of the transmitters by using the propagation delay taps; and a location determining unit configured to adjust the distances by using the weights, and estimate an area, in which circles away by the adjusted distances between the receiver and each of the transmitters on the basis of each of the transmitters overlap with each other, as the location of the receiver. - View Dependent Claims (13, 14)
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Specification