Telecommunications system

H - Electricity – 04 – W

Patent

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Details

H04W 92/08 (2009.01) H04W 4/14 (2009.01) H04W 8/18 (2009.01) H04W 88/02 (2009.01)

Patent

CA 2165201

In a telecommunications system such as a global mobile telephone network in which each subscriber unit includes a Subscriber Identity Module (SIM card), each SIM card has fixed memory locations (22), to which data can be addressed over the air. Some of the locations (22) can not be overwritten from the subscriber unit but can be accessed therefrom on the entry of short simple codes, each associated with one of the locations. Further fixed memory locations (24) can be read over the air only when the subscriber enters a personal identification number. Locking control files (27, 28) are used to control read/write access to the locations (22, 24) respectively.

Dans un système de télécommunications, tel qu'un réseau téléphonique mobile mondial, dans lequel chaque unité d'abonné comprend un module d'identité d'abonné (carte SIM), chaque carte SIM possède des emplacements de mémoire fixes (22), auxquels on peut adresser des données par les ondes. Certains des emplacements (22) ne peuvent pas être recouverts depuis l'unité d'abonné mais sont accessibles depuis ladite unité par l'entrée de codes courts et simples, associés chacun à l'un des emplacements. D'autres emplacements de mémoire fixes (24) peuvent être lus par les ondes uniquement quand l'abonné entre un numéro personnel d'identification. Des fichiers de commande de verrouillage (27, 28) sont utilisés afin de commander l'accès lecture/écriture aux emplacements (22, 24) respectivement.

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