US 12,455,340 B2
Method for locating an electronic device, corresponding system and corresponding electronic device
Onur Oguz, Créteil (FR); Yves Richard, Créteil (FR); and Eric Menard, Créteil (FR)
Assigned to VALEO COMFORT AND DRIVING ASSISTANCE, Créteil (FR)
Appl. No. 17/783,482
Filed by VALEO COMFORT AND DRIVING ASSISTANCE, Créteil (FR)
PCT Filed Dec. 2, 2020, PCT No. PCT/EP2020/084331
§ 371(c)(1), (2) Date Jun. 8, 2022,
PCT Pub. No. WO2021/115885, PCT Pub. Date Jun. 17, 2021.
Claims priority of application No. 19214562 (EP), filed on Dec. 9, 2019.
Prior Publication US 2023/0018938 A1, Jan. 19, 2023
Int. Cl. G01S 5/00 (2006.01); G01S 5/02 (2010.01); G01S 5/06 (2006.01); G01S 13/76 (2006.01); G01S 13/87 (2006.01); H04W 4/02 (2018.01); H04W 64/00 (2009.01)
CPC G01S 5/06 (2013.01) 16 Claims
OG exemplary drawing
 
1. A method for locating an electronic device in the vicinity of an array comprising a central unit and a plurality of anchors connected to the central unit, the electronic device comprising a receiving circuit and having a first configuration in which the receiving circuit is deactivated and a second configuration in which the receiving circuit is configured to detect and receive signals, said method being applied during at least a communication cycle comprising a plurality of time slots each allocated to a distinct anchor, the method comprising:
receiving, by at least one of the anchors, of an initiation signal from the electronic device;
performing an election of a set of at least one anchor among the plurality of anchors based on the reception quality of the initiation signal;
emitting the elected set of at least one anchor a reply signal during their respective allocated time slot;
operating the electronic device in the first configuration during the one or several time slots of the communication cycle which are not allocated to one of the anchors belonging to the elected set of at least one anchor such that the electronic device is in a low power operation mode and not actively listening for a reply signal;
operating the electronic device in the second configuration during the at least one time slot allocated to the elected set of at least one anchor in order to detect and receive the reply signal; and
calculating of a location of the electronic device based on the reply signal received by the electronic device.