Feedback method for supporting interference randomization and apparatus therefor

A user equipment (UE) for transmitting feedback information to support interference randomization, the UE comprising:

• a signal transceiver;
• and
• a processor connected to the signal transceiver,
• wherein the processor receives, from a base station, information on an interference pattern comprising an inter-cell interference measurement pilot signal and a trigger condition for a change to the interference pattern;
• measures an interference randomization gain based on the inter-cell interference measurement pilot signal;
• determines whether to request a change to the interference pattern based on the interference randomization gain;
• requests a change to the interference pattern to the base station, if it is determined that a change to the interference pattern is requested;
• and receives, from the base station, a changed interference pattern and a changed trigger condition.

A method for receiving, by a base station, feedback information to support interference randomization, the method comprising:

• transmitting, to a user equipment (UE), information on an interference pattern comprising an inter-cell interference measurement pilot signal and a trigger condition for a change to the interference pattern;
• receiving, from the UE, a request for a change to the interference pattern, if a change to the interference pattern is requested by the UE based on an interference randomization gain, wherein the interference randomization gain is measured by the UE based on the inter-cell interference measurement pilot signal;
• and
• transmitting, to the UE, a changed interference pattern and a changed trigger condition.