Patent ID: 8964694
Filing Date: 2015-02-24
Classification: H04W

Abstract:
1. A communication system, comprising a first network, a first node belonging to the first network, and a second node belonging to a second network different from the first network, wherein authentication is conducted to perform a session handover from a first session to a second session using authentication information with the first network kept by the first node, the first session being established between the first network and the first node, and the second session being established between the first network and the second node, the first node being an end node of the first session and the second node being an end node of the second session, the authentication information including SIM information and being previously assigned to the first node and unique to the first node, the first node being structured to notify the second node of the authentication information, and the second node being structured to notify an authentication server of the first network of information generated based on the authentication information when the second node conducts authentication processing for the session handover with the authentication server.