APPARATUS AND METHOD FOR MITIGATION/REMOVAL OF INTERFERENCE BETWEEN MACRO-CELL AND FEMTO-CELL

摘要

There is provided a method for removing interference between a femto-cell and a macro-cell, comprising: allocating communication resources to a plurality of femto-cell user devices; receiving uplink signals between a plurality of the macro-cell user devices and a macro-cell base station from the plurality of the macro-cell user devices; detecting a high interference indicator (HII) from the uplink signals; deciding a macro-cell user device, which has transmitted the high interference indicator, as an interference subject user device; extracting channel state information (CSI) from the uplink signal received from the interference subject user device; and changing and allocating the communication resource allocated to the femto-cell user device based on the extracted channel state information.

主权项

1. A femto-cell base station, comprising:
a resource allocating unit that allocates a communication resource to a femto-cell user device; an uplink signal receiving unit that receives uplink signals between a plurality of macro-cell user devices and a macro-cell base station from the plurality of the macro-cell user devices; an interference indicator extracting unit that detects a high interference indicator (HII) of each of the plurality of the macro-cell user devices from the received uplink signals; an interference subject identifying unit that decides an interference subject user device among the plurality of the macro-cell user devices based on the detected high interference indicators; a channel state information extracting unit that extracts channel state information (CSI) of the interference subject user device from the received uplink signals; and an interference removal controller that controls the resource allocating unit to change a communication resource allocated to the femto-cell user device based on the extracted channel state information.