Limit the number of times euicc's subscription profile can be downloaded

Abstract

The present invention relates to the loading process for loading a subscription profile into a permanently built-in subscriber identity module such as an eUICC. According to GSMA standards it is known to load subscription profiles using load packets with an encrypted load sequence specific to the Subscriber Identity Module. When a subscription profile is no longer valid and deactivated by the network operator, it may happen that the user can successfully load a new loading packet because the user indicated that he never received the profile. In order to prevent such multiple loading of subscription profiles, a profile loading counter is maintained in the loading server (SM-DP) according to the invention and a corresponding profile loading counter is also generated in the eUICC when the first download occurs, And the profile load counter is initialized with a counter state defining how many times a load packet can be loaded. Each time the same load packet is downloaded further, the profile load counter in the load server is incremented and included in the load packet. When a profile loading counter has been generated in the eUICC, it is checked whether the counter state in the loading packet exceeds that of the profile loading counter, in which case the loading process is aborted.

Description

technical field [0001] The invention relates to a loading packet and a method for loading a subscribed profile (subscription profile) into a subscriber identity module. Background technique [0002] A mobile terminal operates securely in a mobile communication network by means of a Subscriber Identity Module, also called a Secure Element. As mobile terminals, especially mobile communication terminals, such as, for example, smart phones and M2M terminals can be provided. [0003] Within the scope of establishing the Subscriber Identity Module, a subscription profile must be loaded into the Subscriber Identity Module. A change request for a subscription profile (or profile for short) requires a changed subscription profile. In the case of a plug-in SIM card for a mobile communication terminal, this change can be implemented by replacing the SIM card. Alternatively, a new subscription profile is loaded into the Subscriber Identity Module, which is implemented in particular f...

AI Technical Summary

Problems solved by technology

[0007] However, this measure does not prevent loading packets from being loaded multiple times into the same subscriber identity module and installed there

This will be shown below, why this loading of groups of loads into the same Subscriber Identity module multiple times, which at first glance appears to be a harmless measure, can be problematic

The network operator may in time limit the use contract of the subscription profile

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