US 12,243,365 B2
Method for activating a function of a vehicle via an ultrawide band with an item of portable user equipment, associated system and device for activating a function
Mohamed Cheikh, Toulouse (FR)
Assigned to Continental Automotive Technologies GmbH, Hannover (DE)
Appl. No. 18/023,865
Filed by Continental Automotive Technologies GmbH, Hannover (DE)
PCT Filed Jul. 12, 2021, PCT No. PCT/EP2021/069299
§ 371(c)(1), (2) Date Feb. 28, 2023,
PCT Pub. No. WO2022/048817, PCT Pub. Date Mar. 10, 2022.
Claims priority of application No. FR2008858 (FR), filed on Sep. 1, 2020.
Prior Publication US 2023/0334921 A1, Oct. 19, 2023
Int. Cl. G07C 9/00 (2020.01); B60R 25/20 (2013.01); G01S 5/02 (2010.01); G01S 13/02 (2006.01)
CPC G07C 9/00309 (2013.01) [B60R 25/209 (2013.01); G01S 5/0284 (2013.01); G01S 13/0209 (2013.01); G07C 2209/63 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for activating a vehicle function via ultra-wide band communication using an item of portable user equipment communicating via ultra-wide band with an activation device on board the vehicle, the activation of the vehicle function being carried out as a function of a position of the item of portable user equipment relative to a boundary between an internal zone and an external zone of the vehicle, the activation method comprising:
a) previously equipping the vehicle with an internal antenna and an external antenna;
b) determining a presence of the item of portable user equipment in an authorization zone around the vehicle;
c) storing a power delay of multi-path ultra-wide band signals received by each of the internal antenna and the external antenna according to time;
d) determining an attenuation delay of received power for at least one power threshold value for each of the internal antenna and the external antenna;
e) comparing said attenuation delay with at least one reference delay;
f) determining, as a function of the result of said comparison, whether the item of portable user equipment is located in the internal zone or in the external zone; and
g) activating the vehicle function corresponding to the position of the item of portable user equipment.