The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 23, 2025
Filed:
May. 23, 2023
Commissariat a L'energie Atomique ET Aux Energies Alternatives, Paris, FR;
Christophe Villien, Grenoble, FR;
Abstract
A method for locating a mobile node in a given area, using reference nodes, the positions of which are known in the area, includes the following steps of: a) creating a visibility map comprising, for a plurality of cells, a visibility indicator (l) corresponding to a line-of-sight radio propagation between the cell and the reference node (N); b) providing a set of ranging measurements on the basis of signals transmitted or received by a plurality of reference nodes (N); c) computing a coherence score between the position of the cell and the set of ranging measurements, the coherence score being computed on the basis of the visibility indicator (l) between the cell and the reference node (N); d) determining the position of the mobile node as a function of the coherence score of each cell.