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. 11, 2001
Filed:
Mar. 26, 1998
Applicant:
Inventors:
Havish Koorapaty, Raleigh, NC (US);
Patrik Nils Lundquist, Stockholm, SE;
Anders Carl Erik Hoff, Hagersten, SE;
Assignee:
Erksson INC, Research Triangle Park, NC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04M 1/100 ;
U.S. Cl.
CPC ...
H04M 1/100 ;
Abstract
The location of a mobile station in a mobile cellular communication system is determined by taking measurements of known transmissions from the mobile station at a plurality of base stations. The serving base station sends a control message to the mobile station to induce the mobile station to transmit a known bit sequence. The known bit sequence transmitted by the mobile station is received at a plurality of base stations. The time of arrival of the known bit sequence at each base station is determined and used to calculate the location of the mobile station.