US 12,464,492 B2
Method for geolocating an item of user equipment, device, item of user equipment, base station, system and computer program corresponding thereto
Jean-Marc Kelif, Chatillon (FR)
Assigned to Orange, Issy-les-Moulineaux (FR)
Appl. No. 17/997,532
Filed by Orange, Issy-les-Moulineaux (FR)
PCT Filed Apr. 29, 2021, PCT No. PCT/FR2021/050747
§ 371(c)(1), (2) Date Oct. 28, 2022,
PCT Pub. No. WO2021/219966, PCT Pub. Date Nov. 4, 2021.
Claims priority of application No. 2004322 (FR), filed on Apr. 30, 2020.
Prior Publication US 2024/0298293 A1, Sep. 5, 2024
Int. Cl. H04W 64/00 (2009.01); H04B 17/318 (2015.01)
CPC H04W 64/006 (2013.01) [H04B 17/318 (2015.01)] 17 Claims
OG exemplary drawing
 
1. A method of geolocating an item of user equipment located at a given altitude, receiving a plurality of radio frequency beams transmitted respectively by at least one antenna of a first base station configured to transmit according to at least a first and a second propagation direction, and by at least one antenna of a second base station configured to transmit according to at least a third and a fourth propagation direction, the method implementing:
obtaining a power measured by the item of terminal equipment for radio frequency beams transmitted by the first base station according to at least the first and the second propagation direction and radio frequency beams transmitted by the second base station according to at least the third and the fourth propagation direction, delivering respectively a first set of measured powers for the first base station and a second set of measured powers for the second base station;
calculating at least one item of information per base station, representative of a ratio or a difference between a first and a second power of each set of measured powers, referred to as first item of relative power information for the first base station and second item of relative power information for the second base station, the first power being associated for the first base station with a radio frequency beam transmitted according to the first propagation direction and the second power being associated with a beam transmitted according to the second propagation direction, the first power being associated for the second base station with a radio frequency beam transmitted according to the third propagation direction and the second power being associated with a beam transmitted according to the fourth propagation direction; and
determining a position of the item of user equipment at the given altitude from either 1) the at least one first and second item of relative power information and 2) for each item of relative power information and for each radio frequency beam associated with the item of relative power information, an antenna radiation pattern model characterising the power of the radio frequency beam associated with the item of relative power information, according to the direction of observation of the item of user equipment by the antenna.