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

Claim 17:
18. A system for operation with a home network, the system being configured to enable user equipment belonging to the home network to access data communication services in a visited network of a wireless communication system, the system being further configured to:
issue, to the user equipment, at least one cryptographic token 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;
cryptographically sign the cryptographic token by a private key associated with the home network; and
send the signed token to the user equipment and request the user equipment to cryptographically sign the signed token by a private key associated with the user equipment to generate a double-signed token for enabling the user equipment to access data communication services via the user data transport functions of the visited network-when presenting the double-signed token to a network node of the visited network.