Patent ID: 7590246

Claim:
An authentication method between a short-range wireless network having access points and a mobile terminal within a cellular radio communication network comprising: transmitting, from the mobile terminal to a controller through the cellular network, a secret code request including a mobile terminal address and an address of an access point in a zone covered by the mobile terminal, generating a secret code in said controller in response to said secret code request, transmitting from the controller to the mobile terminal a confirming message including the secret code and the access point address which is retrieved from the secret code request, transmitting from the controller to the access point a connection request message including the secret code and the mobile terminal address which is retrieved from the secret code request, requesting a connection from the mobile terminal to the access point designated by the address which is retrieved from the confirming message, generating a session key as a function of the access point address, the mobile terminal address and the secret code retrieved from the confirming message and from the connection request message, and the access point authenticating the mobile terminal as a function of the session key.