Method for providing local CSG and controlling access in server in charge of control plane in mobile communication network

A Mobility Management Entity (MME) of a control plane in a visited network, the MME comprising:

• a receiving unit;
• a transmitting unit;
• and
• a control unit configured to control the receiving unit and the transmitting unit,
• wherein the control unit is further configured to:
• control the receiving unit to receive an access request message or an update request message from a Home (e)Node B,
• identify confliction between first Closed Subscriber Group (CSG) information and second CSG information when a user equipment (UE) is roaming to the visited network,
• wherein the first CSG information is CSG-related information defined in a home network and the second CSG information is CSG-related information in the visited network for the roaming UE,
• determine CSG information among the first CSG information and the second CSG information based on predefined priority information,
• wherein the predefined priority information indicates that the first CSG information takes precedence over the second CSG information, and
• control the transmitting unit to transmit an accept message based on the determined CSG information to the roaming UE via the Home (e)Node B.