Prevention of alteration of location information for mobile-based location calculation

Patent 6216007 Issued on April 10, 2001. Estimated Expiration Date:

September 29, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Passive high accuracy geolocation system and method
Patent #: 5317323
Issued on: 05/31/1994
Inventor: Kennedy, et al.

Cellular telecommunication switching system for providing public emergency call location information
Patent #: 5388147
Issued on: 02/07/1995
Inventor: Grimes

Secure communication of information
Patent #: 5577122
Issued on: 11/19/1996
Inventor: Schipper, et al.

Apparatus and method for billing in a wireless communication system
Patent #: 5774802
Issued on: 06/30/1998
Inventor: Tell, et al.

Radio telecommunication network with fraud-circumventing registration
Patent #: 5790073
Issued on: 08/04/1998
Inventor: Tayloe, et al.

Positioning system and method
Patent #: 5815114
Issued on: 09/29/1998
Inventor: Speasl, et al.

Use of duplex cipher algorithms for satellite channels with delay
Patent #: 5825889
Issued on: 10/20/1998
Inventor: Dent

Methods of detecting decryption errors
Patent #: 5841873
Issued on: 11/24/1998
Inventor: Lockhart, et al.

Identity confidentiality method in radio communication system
Patent #: 5889861
Issued on: 03/30/1999
Inventor: Ohashi, et al.

Vehicle tracking system
Patent #: 5898391
Issued on: 04/27/1999
Inventor: Jefferies, et al.

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Inventors

Application

No. 163028 filed on 09/29/1998

US Classes:

455/456.2, Based on request signal342/457, Land vehicle location (e.g., bus, police car455/410, Security or fraud prevention455/457, Location display455/558Card control element

Examiners

Primary: Nguyen, Lee
Assistant: Nguyen, Simon

Attorney, Agent or Firm

Jenkens & Gilchrist, P.C.

Foreign Patent References

WO 95/21511 WO. 08/13/1995

International Class

H04Q 007/00

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.