| 摘要 |
The present invention is designed to reduce interference between a macro cell and a small cell in a radio communication system in which the macro cell and the small cell are allocated to overlap at least in part. The interference reduction method of the present invention includes the steps in which a small base station (12) transmits macro cell identification information that identifies the macro cell, to a user terminal in a small cell, allocates a downlink control signal for the user terminal to a radio resource unit having a different index number from that of a radio resource unit where a downlink control signal to be transmitted from the macro base station (11) is allocated, and interleaves the downlink control signal for the user terminal using an interleaving pattern that is generated based on the macro cell identification information and that is the same as an interleaving pattern used in macro base station (11). |
