Patent ID: 9622149
Date: 2017-04-11
CPC Classifications: H04W

Claim:
1. A method for managing a protocol by a network node in a mobile communication system, the method comprising: receiving, by the Network node, from a terminal that supports Third Generation Partnership Project (3GPP) and non-3GPP communications, a message requesting an authentication process for a non-3GPP access network from a 3GPP access network, when the terminal attaches to the non-3GPP access network or hands over into the non-3GPP access network; wherein the received message includes information that indicates a preferred mobility protocol, Dual Stack Mobile IPv6 (DSMIPv6), consistent with S selecting, by the Network node, the preferred mobility protocol, Dual Stack Mobile IPv6 (DSMIPv6), for setting up an Internet Protocol (IP) tunnel with the terminal from among candidates based on the received message, an access network capability and a network policy; notifying, by the Network node, the selected mobility protocol for setting up the IP tunnel to the terminal; and establishing the authentication process for a non-3GPP access network from the 3GPP access network when the terminal attaches to the non-3GPP access network or hands over to the non-3GPP access network after the notification by the network node is performed.