Selective roaming in wireless telecommunications networks

A computer-readable storage medium, excluding transitory signals and carrying instructions, which, when executed by at least one data processor of a system, cause the system to:

• maintain mappings between respective identifiers of user equipment (UE) devices and roaming permissions for each UE device,
• wherein the mappings comprise:
• an indication of whether the respective UE device has authorization to access a roaming cellular network, and
• identifiers of one or more geographic regions in which the respective UE device is authorized to access the roaming cellular network;
• process requests received from the UE devices to attach to a roaming telecommunications network in respective specified geographic regions;
• and
• selectively enable the UE devices to access the roaming telecommunications network based on the mappings.

A computer-readable storage medium, excluding transitory signals and carrying instructions, which, when executed by at least one data processor of a system, cause the system to:

• receive a request to update a location of a target user equipment (UE) device to attach the target UE device to a roaming telecommunications network;
• transmit a message to a roaming controller associated with a home telecommunications network to which the target UE device is registered;
• wherein the roaming controller is configured to query, in response to the message, a set of roaming permissions maintained for a plurality of UE devices and to selectively allow registration of the target UE device to the roaming telecommunications network based on the set of roaming permissions;
• and
• enable attachment of the target UE device to the roaming telecommunications network when the roaming controller allows the registration.