Method and apparatus for performing carrier aggregation using ABS patterns in macro eNB of wireless communication system connected to heterogeneous network

An apparatus of an enhanced node B (eNB), with a macro cell in a wireless communication system comprising the macro cell and a small cell included in the macro cell, the apparatus comprising:

• a transceiver;
• and
• at least one processor configured to:
• determine a first almost blank subframe (ABS) pattern for a first component carrier (CC), and a second ABS pattern for a second CC, wherein the second ABS pattern is different from the first ABS pattern;
• determine whether a serving cell for a user equipment (UE) is configured with the macro cell or both the macro cell and the small cell,
• if the serving cell of the UE is configured with the macro cell, transmit, to the UE, first data on the first CC by using the first ABS pattern and transmit, to the UE, second data on the second CC by using the second ABS pattern;
• and
• if the serving cell of the UE is configured with both the macro cell and the small cell, control another eNB with the small cell to transmit, to the UE, the second data on the second CC by using the second ABS pattern.

A method of an enhanced node B (eNB), with a macro cell in a wireless communication system comprising the macro cell and a small cell included in the macro cell, the method comprising:

• determining a first almost blank subframe (ABS) pattern for a first component carrier (CC), and a second ABS pattern for a second CC, wherein the second ABS pattern is different from the first ABS pattern;
• determining, whether a serving cell for a user equipment (UE) is configured with the macro cell or both the macro cell and the small cell;
• if the serving cell of the UE is configured with the macro cell, transmitting, to the UE, first data on the first CC by using the first ABS pattern and transmitting, to the UE, second data on the second CC by using the second ABS pattern, and
• if the serving cell of the UE is configured with both the macro cell and the small cell, transmitting, to the UE, the first data on the first CC by using the first ABS pattern and controlling another eNB with the small cell to transmit, to the UE, the second data on the second CC by using the second ABS pattern.

An apparatus of an enhanced node B (eNB), with a macro cell in a wireless communication system comprising the macro cell and a small cell included in the macro cell, the method comprising:

• a transceiver;
• and
• at least one processor configured to:
• determine a first almost blank subframe (ABS) pattern for a first component carrier (CC), and a second ABS pattern for a second CC, wherein the second ABS pattern is different from the first ABS pattern;
• determine whether a serving cell for a user equipment (UE) is configured with the macro cell or both the macro cell and the small cell;
• if the serving cell of the UE is configured with the macro cell, transmit, to the UE, first data on the first CC by using the first ABS pattern and transmit, to the UE, second data on the second CC by using the second ABS pattern;
• and
• if the serving cell of the UE is configured with both the macro cell and the small cell, transmit, to the UE, the first data on the first CC by using the first ABS pattern and control another eNB with the small cell to transmit, to the UE, the second data on the second CC by using the second ABS pattern.