Patent EA-001519-B1 (EA)
Title: Roaming process and pertaining devices
Inventor: HEUTCHI WALTER
IPC: H04M3/00
Filed: 1997-09-04
Abstract: 1. Telecommunication process which enables a subscriber of a home mobile radio network to log on to a visited mobile radio network (VPLMN, Visitor Public Land Mobile Network) without a roaming agreement with the home mobile radio network, characterized in that a computer program replaces the identification data of the subscriber with identification data made available by a partner radio network having a roaming agreement with the home mobile radio network, on the one hand, and with the visited mobile radio network, on the other hand. 2. Process according to claim 1, characterized in that the bills run over a unit (6) administered by the partner radio network. 3. Process according to one of the preceding claims, characterized in that at least one of the mobile radio networks is a GSM network. 4. Process according to one of the preceding claims, characterized in that the radio networks may be of different types. 5. Process according to the preceding claim, characterized in that the identification data of the subscriber are stored in a storage means (10), for example in a SIM card, which is integrated in the mobile apparatus (1 ) of the subscriber, and that using an identification modifying means (102) the identification data of the subscriber, dependent upon the mobile radio network in which the mobile apparatus is presently situated, are replaced in the terminal by identification data corresponding to a subscriber in a partner radio network having a roaming agreement with the home mobile radio network, on the one hand, and with the visited mobile radio network, on the other hand. 6. Process according to the preceding claim, characterized in that the identification data of the subscriber are replaced in the storage means using a processor (102) which runs a computer program stored in the storage means. 7. Process according to the preceding claim, characterized by a step of checking a processing flag (101) contained in the storage means, upon each reset or upon each switching-on of the mobile apparatus (1), and in that the said computer program is run at the end of the check when the processing flag is set. 8. Chip card (10) which is intended for use in a mobile radio apparatus (1) and makes possible the storage of subscriber identification data, characterized in that it comprises a processor (102) which makes possible a replacement of the subscriber identification data, dependent on the visited mobile radio network in which the mobile radio apparatus is presently situated, by identification data corresponding to a subscriber in a partner radio network having a roaming agreement with the home mobile radio network in which the subscriber has subscribed, on the one hand, and with the visited mobile radio network, on the other hand. 9. Chip card according to the preceding claim, characterized in that the means for changing the subscriber identification data contain a computer program which is stored in the programmable device (10) and can be run by a processor (102) on the programmable device. 10. Chip card according to the preceding claim, characterized in that it further stores a processing flag (100) which is checked upon each reset or upon each switching-on of the mobile radio apparatus (1). 11. Chip card (10) intended for use in a mobile radio apparatus (1) and containing a first set of subscriber identification data from the home radio network, characterized in that it further contains a second set of subscriber identification data from a partner radio network administered by an operator having a roaming agreement with the home mobile radio network.