Patent ID: 11916824
Assignee: LG ELECTRONICS INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for transmitting a feedback signal by a reception user equipment (UE) in a wireless communication system comprising:
receiving, by the reception user equipment (UE), a first reference signal and a second reference signal from a transmission user equipment (UE); and
transmitting, by the reception user equipment (UE), the feedback signal to the transmission user equipment (UE) based on the first reference signal and the second reference signal,
wherein
the feedback signal includes information about a time difference between a first FFT (Fast Fourier Transform) window for receiving the first reference signal and a second FFT window for receiving the second reference signal; and
a distance between the transmission user equipment (UE) and the reception user equipment (UE) is calculated based on a time difference between the first FFT window and the second FFT window.