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AssigneeBouygues Telecom
InventorFABRICE LEHOUX
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The present invention relates to a method of roaming for a terminal (10) connected to a first mobile telephone network (1a), the method being characterized in that it comprises the implementation by processing means of a subscriber identification card (11) of the terminal (10) of steps of: (a) detection of a deficiency affecting the data service of the first network (1a) to which the terminal (10) is connected; (b) inscribing of said first network (1a) for which a deficiency of the data service has been detected in a list of prohibited networks (FPLMN) that is stored in storage means of the subscriber identification card (11); (c) selection of a new network (1b, 1c) and connection of the terminal (10) to said new network (1b, 1c); (d) removal of said first network (1a) from said list of prohibited networks (FPLMN). The present invention relates moreover to a subscriber identification card and to a terminal.
A method of roaming for a terminal (10) connected to a first mobile telephone network (1a), the method being characterized in that it comprises the implementation, by the processing means of a subscriber identification card (11) of the terminal (10), of steps of:
The method according to one of the preceding claims, further comprising, following step (a), the removal of said first network (1a) from a list of preferred networks (PPLMN) stored in the storage means of the subscriber identification card (11), and following step (d), the re-entering of said first network (1a) in the list of preferred networks (PPLMN).
The method according to one of the preceding claims, wherein the terminal (10) is connected to a mobile telephone network (1a, 1b, 1c) via a modem (12), step (c) comprising prior to the connection of the terminal (10) to the new network (1b, 1c) either the refreshing of said modem (12) and/or of said subscriber identification card (11), or the reloading by said modem (12) of the files contained in the subscriber identification card (11).
The method according to one of the preceding claims, wherein step (a) comprises the detection of a loss of GPRS attach.
The method according to one of the preceding claims, wherein step (a) comprises the detection of a failure to open a PDP session.
The method according to one of the preceding claims, wherein step (a) comprises the detection, by processing means (13) of the terminal (10), of a loss of connection to a remote server, and the sending to the subscriber identification card (11) of a command characteristic of a deficiency affecting the data service of the first network (1a) to which the terminal (10) is connected.
The method according to one of the preceding claims, wherein step (a) comprises the detection, by processing means (13) of the terminal (10), of an abnormally low data rate, and the sending to the subscriber identification card (11) of a command characteristic of a deficiency affecting the data service of the first network (1a) to which the terminal (10) is connected.
The method according to one of the preceding claims, wherein step (a) comprises the triggering of a first timer and/or a counter at the end of which steps (b) to (d) are implemented.
The method according to one of the preceding claims, wherein step (d) comprises the triggering of a second timer and/or a counter before the end of which the method cannot be implemented again.
Dependencies are inferred from the claim text.