US 12,436,223 B2
Methods and apparatus for positioning of a moving wireless device
Torbjörn Wigren, Uppsala (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 18/014,524
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Jul. 10, 2020, PCT No. PCT/SE2020/050723
§ 371(c)(1), (2) Date Jan. 5, 2023,
PCT Pub. No. WO2022/010392, PCT Pub. Date Jan. 13, 2022.
Prior Publication US 2023/0266428 A1, Aug. 24, 2023
Int. Cl. G01S 5/02 (2010.01); G01S 5/00 (2006.01)
CPC G01S 5/0246 (2020.05) [G01S 5/017 (2020.05); G01S 5/0294 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of determining a two-dimensional position of a moving wireless device, the method comprising:
obtaining, for each of three or more base stations, one or more measurements of a carrier frequency offset, CFO, for one or more signals sent between the moving wireless device and the respective base stations; and
inputting the CFO measurements into a model to determine a two-dimensional position of the moving wireless device, wherein inputs to the model do not include range measurements for the moving wireless device with respect to the three or more base stations.