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. 16, 2003
Filed:
Feb. 02, 2001
Timo Rantalainen, Helsinki, FI;
Jani Moilanen, Helsinki, FI;
Nokia Mobile Phones, Ltd., Espoo, FI;
Abstract
A method and system for estimating the location of a mobile station in a telecommunications network having a reference base station and a plurality of neighboring base stations. At the beginning of the E-OTD measurement, the mobile station may be provided with the expected OTD values in the reference base station site, possibly instead of RTD values of the neighboring base stations, to make it possible for the mobile station to calculate the uncertainty in the measured OTD due to its unknown location. Alternatively, the network provides the mobile station the expected OTD values in its current location, and the estimated uncertainty of those values. When the uncertainty is greater than a predetermined value, the mobile station makes E-OTD measurements based on the SCH burst. Otherwise, the mobile station makes measurements based on normal/dummy bursts, and/or aligns the time window for taking samples from signals received from neighboring base stations.