Method and apparatus for determining the location of a mobile object

US8102314B2 · kind B2 · utility

Assignee

• Siemens Enterprise Communications GmbH & Co. KG · DE

Inventors

• Joachim Bamberger · Stockdorf, DE
• Bruno Betoni Parodi · Birkenfeld, DE
• Joachim Horn · Treysa, DE
• Henning Lenz · Karlsruhe, DE
• Andrei Szabo · Ottobrunn, DE

Key dates

• Filing date: Dec 12, 2006
• Grant date: Jan 24, 2012
• Expiry date: Sep 19, 2027

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B17/391
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

The invention relates to a position-finding method for determing the location of a mobile object. The features, for example received field strengths, of a plurality of base stations are measured, and the object position is located from these features, using a reference map. During an initialization process, a reference map is created which comprises a multiplicity of positions and the associated feature-dependent values. During use of the method, a plurality of position-finding processes are carried out, by means of each of which a measured feature-dependent value and from this, a located position of the object, are determined using the predetermined reference map. The predetermined reference map is in each case updated for at least some of the positions found, during which updates, the feature-dependent values are each corrected by a correction term at the support points of the reference map in a predetermined area surrounding an object position.