Apparatus and method for controlling interference in wireless communication system of hierarchical cell structure

An operating method of a macro base station in a wireless communication system having a hierarchical cell structure, the method comprising:

• allocating to a macro terminal a measurement identifier with a measurement reporting configuration for a blanking trigger set;
• receiving a measurement report message from the macro terminal;
• confirming, in the received measurement report message, the measurement identifier corresponding to the measurement reporting configuration for the blanking trigger of a pico base station;
• and
• based on the confirmed measurement identifier, transmitting a handover required message comprising a cause value for the blanking to a Mobility Management Entity (MME).

An operating method of a pico base station in a wireless communication system having a hierarchical cell structure, the method comprising:

• receiving a handover required message from a Mobility Management Entity (MME);
• confirming a cause value for blanking in the received handover required message;
• and
• based on the confirmed cause value, starting or stopping a blanking operation for a corresponding macro terminal.

An apparatus of a macro base station in a wireless communication system having a hierarchical cell structure, the apparatus comprising:

• a receiver for receiving a measurement report message from a macro terminal;
• a report information manager for allocating to the macro terminal a measurement identifier with a measurement reporting configuration for a blanking trigger set, for confirming, in the received measurement report message, the measurement identifier corresponding to the measurement reporting configuration for the blanking trigger of a pico base station, and based on the confirmed measurement identifier, for generating a handover required message comprising a cause value for the blanking;
• and
• a handover related message transceiver for transmitting the generated handover required message to a Mobility Management Entity (MME).

An operating method of a macro base station in a wireless communication system having a hierarchical cell structure, the method comprising:

• allocating to a macro terminal a measurement identifier with measurement reporting configuration for blanking trigger set;
• receiving a measurement report message from the macro terminal;
• confirming, in the received measurement report message, the measurement identifier corresponding to the measurement reporting configuration for the blanking trigger of a pico base station and a measurement result value;
• and
• transmitting a handover required message comprising the confirmed measurement identifier and measurement result value to a Mobility Management Entity (MME).

An operating method of a pico base station in a wireless communication system having a hierarchical cell structure, the method comprising:

• receiving a handover required message from a Mobility Management Entity (MME);
• in the received handover required message, confirming a measurement identifier corresponding to measurement reporting configuration for a blanking trigger of the pico base station and a measurement result value;
• and
• based on the confirmed measurement identifier and measurement result value, starting or stopping a blanking operation for a corresponding macro terminal.

An apparatus of a macro base station in a wireless communication system having a hierarchical cell structure, the apparatus comprising:

• a receiver for receiving a measurement report message from a macro terminal;
• a report information manager for allocating to the macro terminal a measurement identifier with measurement reporting configuration for a blanking trigger set, for confirming, in the received measurement report message, the measurement identifier corresponding to the measurement reporting configuration for the blanking trigger of a pico base station and a measurement result value, and for generating a handover required message comprising the confirmed measurement identifier and measurement result value;
• and
• a handover related message transceiver for transmitting the generated handover required message to a Mobility Management Entity (MME).