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:
Mar. 08, 2005
Filed:
May. 16, 2003
Niilo Sirola, Tampere, FI;
Jari Syrjärinne, Tampere, FI;
Niilo Sirola, Tampere, FI;
Jari Syrjärinne, Tampere, FI;
Nokia Corporation, Espoo, FI;
Abstract
The invention relates to a method for determining in a positioning system the position of a receiver and/or an accurate system time. The receiver receives and tracks code modulated signals transmitted by beacons of the positioning system and comprising a known regularity. In order to enable an improved positioning, it is proposed that the method comprises establishing a grid covering the areaof earth which is visible by a plurality of beacons from which said receiver receives and tracks code modulated signals at a specific reference time instance. The method further comprises determining the position of the receiver and/or the system time based on measured code phases of code modulated signals received and tracked by the receiver, on available assistance data and on at least a selected one of the intersection points of the grid as reference location. The invention relates equally to corresponding devices and a positioning system.