Method for preventing fraud or misuse when using a specific service of a public land mobile network by a user equipment, subscriber identity module and application program

摘要

A method for preventing fraud or misuse when a User Equipment uses a service of a public land mobile network. The User Equipment includes a Subscriber Identity Module, The Subscriber Identity Module includes address information used for the service of the public land mobile network. The Subscriber Identity Module includes an application program. The application program includes reference address information. The method includes: determining, by the application program of the Subscriber Identity Module of the User Equipment, that the address information does not correspond to the reference address information; and in response to the determining: blocking, by the application program, the service for the User Equipment and sending an error message to the public land mobile network; or invoking, by the application program, the service for the User Equipment using the reference address information.

主权项

1. A method for preventing fraud or misuse when a User Equipment uses a service of a public land mobile network, wherein the User Equipment comprises a Subscriber Identity Module, wherein the Subscriber Identity Module comprises address information used for the service of the public land mobile network, wherein the Subscriber Identity Module comprises an application program, wherein the application program comprises reference address information, the method comprising:
determining, by the application program of the Subscriber Identity Module of the User Equipment, that the address information does not correspond to the reference address information; and in response to the determining:
replacing the address information with the reference address information in case of the reference address information being a complete address information that specifies a network entity, and invoke the service for the User Equipment; andblocking, at least temporarily, by the application program, the service for the User Equipment and sending an error message to the public land mobile network in case of the reference address information being incomplete address information that specifies a country code and that does not specify a network entity; wherein the address information is provided at a specific memory location within the Subscriber Identity Module; and wherein the application program is configured such that the specific memory location within the Subscriber Identity Module is verified repeatedly and at least once in a predetermined time interval.