US 12,192,034 B2
System and method for distance measurement using UWB radar
Hoang Viet Nguyen, Plano, TX (US); Yuming Zhu, Plano, TX (US); Jiho Shin, Suwon-si (KR); and Qiang Xie, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Jan. 27, 2023, as Appl. No. 18/160,873.
Claims priority of provisional application 63/305,030, filed on Jan. 31, 2022.
Claims priority of provisional application 63/343,212, filed on May 18, 2022.
Prior Publication US 2023/0246882 A1, Aug. 3, 2023
Int. Cl. H04L 5/12 (2006.01); H04L 25/02 (2006.01); H04W 64/00 (2009.01)
CPC H04L 25/0212 (2013.01) [H04W 64/003 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
obtaining a channel impulse response (CIR) based on multiple ultrawide band (UWB) measurements between a mobile device and a target object;
calculating a range profile and frequency profile based on the CIR;
in response to determining that a dominant peak in the frequency profile is above a first predetermined threshold, estimating a first distance between the mobile device and the target object based on the range profile;
estimating a second distance between the mobile device and the target object based on a phase of the CIR; and
obtaining an estimated distance between the mobile device and the target object based on at least one of the first distance and the second distance.