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:
Nov. 16, 1999
Filed:
Jul. 30, 1997
Applicant:
Inventors:
George P Yost, DeSoto, TX (US);
Shankari Panchapakesan, Dallas, TX (US);
Assignee:
Ericsson Inc, Research Triangle Park, NC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
455456 ; 455457 ; 342450 ; 342357 ;
Abstract
A system and method for improving the accuracy of a location measurement within a telecommunications system is disclosed. A combination of Time Difference of Arrival (TDOA) and Timing Advance (TA) location measurement techniques enables Automatic Location Identification (ALI) with minor modifications to the telecommunications system, whereby the combination exhibits reduced measurement error and resolution of ambiguities present in either technique separately.