| CPC G01S 5/00 (2013.01) [G01S 5/0009 (2013.01); G01S 19/10 (2013.01); H04L 5/001 (2013.01); H04L 5/0051 (2013.01); H04W 4/02 (2013.01); H04W 72/0453 (2013.01)] | 18 Claims |
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1. A positioning method performed by a user equipment, the positioning method comprising:
receiving a first reference signal from a first transmitter and receiving a second reference signal from a second transmitter;
acquiring phase information depending on carrier frequencies of the first reference signal and the second reference signal based on received data of the first reference signal measured at a plurality of sample times and received data of the second reference signal measured at the plurality of sample times; and
outputting information about a difference between a travel distance of the first reference signal and a travel distance of the second reference signal based on the phase information depending on the carrier frequencies,
wherein the acquiring of the phase information comprises:
acquiring a first sample vector based on the received data of the first reference signal,
acquiring a second sample vector based on the received data of the second reference signal,
calculating a first phase vector and a second phase vector by performing an inner product operation of a discrete Fourier transform (DFT) coefficient vector for a DFT operation with respect to each of the first sample vector and the second sample vector, and
acquiring the phase information from a conjugate multiplication of the first phase vector and the second phase vector.
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