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:
Sep. 10, 2013
Filed:
Oct. 20, 2008
Ernst Versteeg, Bern, CH;
Eric Taillard, Yverdon-les-Bains, CH;
Patrick Bailly, Puidoux, CH;
Maxence Laurent, Yverdon-les-Bains, CH;
Ernst Versteeg, Bern, CH;
Eric Taillard, Yverdon-les-Bains, CH;
Patrick Bailly, Puidoux, CH;
Maxence Laurent, Yverdon-les-Bains, CH;
Swisscom AG, Bern, CH;
Abstract
A computer system determines location probabilities for defined sub-areas () of a geographical area (), e.g. for squares arranged in a grid (), based on field strengths expected in the small sub-areas () from the antennas (A, AA, A), and based on the antenna used by the mobile communication terminal. The location probabilities indicate for a sub-area () the probability that the mobile communication terminal is located in the respective sub-area (). The computer system determines at least one ellipse defining the location area, based on the location probabilities of the sub-areas (). The location probabilities make it possible to determine elliptical location areas of mobile users much smaller than the area each antenna does cover physically, but without the need for measuring at the mobile communication terminal signal properties such as signal strength or observed time differences.