In this device: a gain calculator (101) uses a function in which the variable is a first resource amount from among the resource amounts possessed by an operator in question, and calculates a second resource amount at which the maximum gain is reached in the function of the operator to which the device in question belongs, the first resource amount being a resource amount allocated to a terminal belonging to another operator; a transmitter/receiver (102) transmits the second resource amount to the manager (300), and receives, from the manager (300), the minimum value among second resource amounts calculated in each of the operators; and the allocation unit (103) allocates resources to the signal of the terminal belonging to the operator in question and to the terminal belonging to the other operator on the basis of the minimum value among the second resource amounts calculated by each of the operators.