Patent ID: 11956634
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 18:
19. A system for operation with a visited network, the system being configured to enable user equipment belonging to a home network to access data communication services in the visited network of a wireless communication system, the system being further configured to:
obtain at least one cryptographic token from the user equipment, the at least one cryptographic token being usable for accessing data communication services via user data transport functions of the visited network and representing at least one of a predetermined or maximum data consumption limit, and a price range limitation and being a double-signed token cryptographically signed by a private key associated with the home network and cryptographically signed by a private key associated with the user equipment; and
validate the double-signed token for enabling the user equipment to access data communication services via the user data transport functions of the visited network.