公开(公告)号：US20180160393A1

公开(公告)日：2018-06-07

申请号：US15371980

申请日：2016-12-07

Applicant: Verizon Patent and Licensing Inc.

Inventor： Yaojun Zeng ,  Shi-Jau Simon Wang ,  Ray A. Sears, JR. ,  Sandeep Sharma

IPC: H04W64/00 ,  G01R29/08 ,  G01S5/06 ,  G01S5/02

CPC classification number: G01S5/0252 ,  G01S5/06 ,  G01S5/14 ,  G01S11/02 ,  G01S13/74 ,  H04W64/00

Abstract: A method, a device, and a non-transitory storage medium provide to generate a first signal that includes a perfect polyphase-encoding of an identifier of the wireless station; transmit the first signal; receive from an end device, a second signal that is responsive to the first signal and includes a perfect polyphase-encoding of the identifier of the wireless station and an identifier of the end device; autocorrelate the first signal and the second signal; calculate in response to the autocorrelation, a time difference between the first signal and the second signal; calculate in response to the calculation, a phase difference between the first signal and the second signal; and calculate in response to the calculation of the phase difference, a distance between the wireless station and the end device based on the time difference, the phase difference, the identifier of the wireless station, and the identifier of the end device.