Base station and scheduling method

A base station that serves as a second base station in a communication system including a first base station corresponding to a first cell and the second base station corresponding to a second cell smaller than a first area of the first cell, at least part of the second cell overlapping the first area, the base station comprising:

• a calculation unit that, based on a first channel estimation value between a first terminal being connected to the first base station through the first cell and the second base station as well as a second channel estimation value between a second terminal being connected to the second base station through the second cell and the second base station, calculates an indicator based on a phase relationship between the first channel estimation value and the second channel estimation value;
• and
• a scheduler that, based on the calculated indicator, determines whether to include a first candidate for a resource that the first base station assigns to the first terminal in a second candidate for a resource that the second base station assigns to the second terminal.