A radio network controller controls a location registration area which is formed by a plurality of cells. The radio network controller includes a location registration information receiver configured to receive a location registration information for registering a mobile station in the location registration area; a reception capability acquirer configured to acquire a reception capability of the mobile station; and a measurer configured to measure the number of the mobile stations capable of receiving broadcast data or multicast data in the location registration area, in accordance with the location registration information and the reception capability.