Patent ID: 9002324
Filing Date: 2015-04-07
Classification: H04L,H04W

Abstract:
1. A mobile communication method comprising: a step of transmitting, by a relay node having a secure channel established between the relay node and a subscriber identification module for a relay node, an attach request signal for requesting an attach process executed as the relay node to a radio base station; a step of transmitting, by the radio base station, an initial signal indicating the attach process executed as the relay node to a mobile management node in response to the attach request signal; a step of starting, by the mobile management node, an authentication and key agreement procedure between the relay node and the subscriber identification module for a relay node in response to the initial signal; a step of determining, by the mobile management node, whether the subscriber identification module for a relay node can be used for the attach process executed as the relay node on the basis of subscriber data acquired from a subscriber management server; a step of setting NAS security between the mobile management node and the relay node when it is determined that the subscriber identification module for a relay node can be used for the attach process executed as the relay node; and a step of failing in the authentication and key agreement procedure when it is determined that the subscriber identification module for a relay node cannot be used for the attach process executed as the relay node.