Base station, communication terminal, usable radio resource setting method, and base station control program

Abstract

Provided is a setting method for the usable resource for a communication terminal which, while suppressing an inter-adjacent-cell interference, improves a selection flexibility for a band for the communication terminal subjected to a strong influence of the adjacent-cell interference. A base station, which performs radio communications with a communication terminal within a main communication area, includes: a priority band setting unit that sets a main priority radio resource that can be used for the main communication area on a higher priority basis than for a communication area adjacent to the main communication area, and acquires a particular priority radio resource that can be used for at least one particular communication area adjacent to the main communication area on a higher priority basis than for a communication area adjacent to the at least one particular communication area; and a usable band setting unit that acquires a communication quality difference regarding the communication terminal between communication quality related to the main communication area and communication quality related to the at least one particular communication area, and sets the main priority radio resource to which at least one particular priority radio resource is added, as usable radio resources for the communication terminal when at least one condition that the communication quality difference is larger than a threshold value is fulfilled.