Telecommunications – Radiotelephone system – Security or fraud prevention
Patent
1996-06-18
1999-09-21
Olms, Douglas W.
Telecommunications
Radiotelephone system
Security or fraud prevention
455411, 455558, H04B 110
Patent
active
059566337
ABSTRACT:
The present invention concerns a method and apparatus for restricting the right of use of a mobile station, for example, to a communications network controlled by a certain operator. The mobile station is locked so that it can be used only with a SIM module (21) having a certain code (IMSI, GID1, GID2), and the lock can be opened with a lock open password (C.sub.1) given by the network operator, the password being compared in the mobile station with a comparative password (C.sub.2). In the method and apparatus according to the invention the lock open comparative password (C.sub.2) is calculated in the mobile station by an algorithm (X, Y) stored in the mobile station, input data for the algorithm being preferably an equipment table (T.sub.1), a mobile equipment identity code (IMEI), and an operator specific code N, all stored in the mobile station. Correspondingly, the operator calculates the lock open password (C.sub.1) with a device that preferably includes a protection module. The lock open password calculation algorithm has as input data an operator table, the mobile equipment identity code (IMEI), and the protection code of the protection module. In accordance with the present invention the lock open password (C.sub.1) can be made operator specific, and no unauthorized person can obtain the password by reading it from the memory of the mobile station, or through the program used by the operator.
REFERENCES:
patent: 4868846 (1989-09-01), Kemppi
patent: 5060266 (1991-10-01), Dent
patent: 5091942 (1992-02-01), Dent
patent: 5148485 (1992-09-01), Dent
patent: 5237612 (1993-08-01), Raith
patent: 5241598 (1993-08-01), Raith
patent: 5266782 (1993-11-01), Alanara et al.
patent: 5315638 (1994-05-01), Mukari
patent: 5353328 (1994-10-01), Jokimies
patent: 5392356 (1995-02-01), Konno et al.
patent: 5448622 (1995-09-01), Huttunen
patent: 5487084 (1996-01-01), Lindholm
patent: 5557654 (1996-09-01), Maenpaa
Nokia Mobile Phones Limited
Olms Douglas W.
Vincent David R
LandOfFree
Method and apparatus for controlling the right of use/activating does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for controlling the right of use/activating, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for controlling the right of use/activating will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-91123