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

Claim 3:
4. A method performed by a network node to enable a user equipment belonging to a home network to access data communication services in a visited network of a wireless communication system, the method comprising:
obtaining at least one cryptographic token from the user equipment that represents means for accessing data communication services via user data transport functions of the visited network and that represents at least one of a predetermined or maximum data consumption limit, and a price range limitation, the at least one cryptographic token 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
validating the double-signed token for enabling the user equipment to access data communication services via the user data transport functions of the visited network.