Patent ID: 7848737

Claim:
A Session Aggregator device for controlling a plurality of access sessions established by a user accessing a wireless local area network through a number of Access Points, the user being subscriber of a first operator network, the Access Points belonging to second operator networks and carrying out access control procedures whereby the user is authenticated by the first operator network, the Session Aggregator device comprising: means for receiving indication of an authentication event for the user accessing a given Access Point with a given user equipment; means for receiving indication of an accounting event that includes information related to an access session established for the user at the given Access Point with the given user equipment; authorization means arranged to make a decision on whether the user is allowed to access the given Access Point as receiving information of authentication events, and based on other access sessions that the user has established; and processing means arranged to determine whether present course of actions corresponds to a permissible flow, or to a possible fraudulent flow as receiving information of accounting events for the user having an access session at the given Access Point with the given user equipment.