Method and apparatus for removing inter-heterogeneous cell interference

A method for removing inter-heterogeneous cell interference, the method comprising:

• transmitting, at a first eNB to a first type UE served by the first eNB, a signal for instructing that a request for interference coordination information required for inter-heterogeneous cell interference coordination to a second eNB, wherein the second eNB is heterogeneous to the first eNB;
• receiving, at the first eNB, the interference coordination information from the first type UE;
• and
• performing, at the first eNB, scheduling for one or more first type UEs on the basis of the received interference coordination information.

An UE apparatus for removing inter-heterogeneous cell interference, the UE apparatus comprising:

• a receiver configured to receive, from a first eNB which is a serving eNB, a signal for instructing that a request for interference coordination information required for inter-heterogeneous cell interference coordination be made to a second eNB, wherein the first eNB is heterogeneous to the second eNB;
• a transmitter configured to transmit, to the second eNB, a predetermined PRACH preamble which notifies the request through a PRACH;
• a receiver configured to receive the interference coordination information from the second eNB;
• and
• a transmitter configured to transmit the received interference coordination information to the first eNB.

An eNode B (eNB) apparatus for removing inter-heterogeneous cell interference, the eNB apparatus comprising:

• a transmitter configured to transmit, to a first type UE served by an eNB corresponding to the eNB apparatus, a signal for instructing that a request for interference coordination information required for inter-heterogeneous cell interference coordination to a second eNB, wherein the eNB is heterogeneous to the second eNB;
• a receiver configured to receive the interference coordination information from the first type UE;
• and
• a processor configured to perform scheduling for one or more first type UEs on the basis of the received interference coordination information.