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.

Date of Patent:
Nov. 18, 2025

Filed:

Mar. 24, 2021
Applicant:

Assa Abloy Ab, Stockholm, SE;

Inventors:

Jan Elfström, Landskrona, SE;

Mikael Johansson, Lund, SE;

Magnus Hansson, Malmö, SE;

Assignee:

ASSA ABLOY AB, Stockholm, SE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S 5/14 (2006.01); G01S 5/02 (2010.01);
U.S. Cl.
CPC ...
G01S 5/14 (2013.01); G01S 5/0252 (2013.01); G01S 5/0278 (2013.01);
Abstract

It is provided a method for enabling determination of proximity of a mobile device () to a selected proximity determiner (). The method comprises the steps of: determining a base set of proximity determiners (-) whereby an enlarged set of proximity determiners is defined as the selected proximity determiner and the base set of proximity determiners; receiving beacon measurements of signal strength of other proximity determiners in the enlarged set of proximity determiners; generating a two-dimensional graph based on the beacon measurements; receiving respective device measurements indicating signal strength of a signal from the mobile device at each proximity determiner in the enlarged set of proximity determiners; finding an optimum in a space defined by the two-dimensional graph; and determining the most probable position of the mobile device in the graph based on the optimum.


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