Method for enabling a user device gain access to a wireless LAN and method for accessing a wireless LAN using a user device

摘要

"Authentication, authorization, and accounting transitive on inter operation between access networks. A method and a system for allowing a user device (240) which has been authenticated by a first communication network to gain access to a second communications network without authentication by the second network communications.The first communications network and the second network communications have a pre established trust relationship between them. A packet is received from the user device (240) which includes a public key of the user device by the second network through the first network (210).A session key is sent from the second network (220) to the user device (240), through the first network (210), when an address of Internet Protocol (IP) source associated with the packet falls within a range allocated in the first network (210). The session key is encrypted with the public key of the device to the user.The device of the user descriptografa the session key using a private key and uses the session key to access the second after that network (220).Also, a mapping is generated for correlatar the identity of the user device (240) with the session key so that the data of use related to the user device (240) are generated by the second communication network and transmitted to the first communication network.That generates information indicative of the access of accounting user device (240) of the second communications network.