Method and apparatus for controlling re-direction between heterogeneous mobile communication systems

A method by a terminal in heterogeneous communication systems, the method comprising:

• transmitting a request message for requesting a tracking area update to a mobile management entity (MME);
• receiving a response message for the request message from the MME;
• identifying that the response message includes information indicating that a radio access technology (RAT) for the request message is not allowed in a public land mobile network (PLMN) for the request message with respect to the terminal;
• disabling a capability for the RAT if the response message includes the information.

A mobile management entity (MME) in heterogeneous mobile communication systems, the MME comprising:

• a receiver configured to receive a request message for requesting a tracking area update from a terminal;
• a controller configured to generate information indicating that the RAT is not allowed if a radio access technology (RAT) for the request message is not allowed in a public land mobile network (PLMN) for the request message with respect to the terminal;
• and
• a transmitter configured to transmit a response comprising the information in response to the request message to the terminal.