Method for checking the compatibility of a mobile station and a

Details Method for checking the compatibility of a mobile station and a Method for checking the compatibility of a mobile station and a

1997-12-16

2000-12-26

Le, Thien M.

Registers

Coded record sensors

Synchronization

235476, 455411, 379 59, G06K 716

Patent

active

061645478

ABSTRACT:
A method for checking the compatibility of a mobile station (201) and a functional unit (207); a mobile station (201) and a functional unit (207). A reference code (104, 105) is calculated in the mobile station (201) and the functional unit (207) by using algorithms which use initial numbers given by the mobile station (201), and the results are compared in the mobile station (108, 201). On the basis of the comparison it is concluded, whether the functional unit (207) is compatible with the mobile station (201), and whether it is to be activated (110, 112). In order to carry out the check measures, a check message including preferably name of the mobile station manufacturer/agent (302), IMEI code (303), product code (304), version data (305, 306), and random number (307), is transmitted to the functional unit (207). Then a response message including preferably name of the functional unit manufacturer/agent (402), serial number (403), text message indicated by the functional unit (404), version data (405, 406), and reference code (407), is transmitted from the functional unit (207) to the mobile station (201).

REFERENCES:
patent: 4439670 (1984-03-01), Basset et al.
patent: 4868846 (1989-09-01), Kemppi
patent: 5091942 (1992-02-01), Dent
patent: 5266782 (1993-11-01), Alanara et al.
patent: 5563934 (1996-10-01), Eda
patent: 5642401 (1997-06-01), Yahagi
patent: 5754952 (1998-05-01), Hodges et al.
patent: 5799084 (1998-08-01), Gallagher et al.

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