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:
Apr. 10, 2001
Filed:
Sep. 29, 1998
Theodore Havinis, Plano, TX (US);
David Boltz, Garland, TX (US);
Ericsson Inc., Research Triangle Park, NC (US);
Abstract
A telecommunications system and method is disclosed for minimizing the chances of a mobile subscriber altering the calculated location of an associated mobile terminal when the positioning measurements and location calculation are performed by the mobile terminal. In order to prevent tampering with the location information, the Positioning Measurement Module (PMM) can be separated from the Location Calculation Module (LCM) by including both the LCM and topological information used for calculation of the location of the mobile terminal on a smart integrated circuit (IC) card within the mobile terminal. When the PMM obtains positioning measurement information, this positioning information is encrypted and sent to the LCM within the smart card, which then deciphers the encrypted information and uses the positioning information and stored topological information to calculate the location of the mobile terminal.