A control device, which is placed in a communication system in which the same resource is used in a plurality of communication areas, includes a communication function unit having a function of communicating with a plurality of user equipments existing in at least one communication area under control of the control device, and a resource allocation unit that, when an uplink resource of a communication area adjacent to one communication area is allocated to a first user equipment, allocates the same uplink resource of the one communication area to a second user equipment with an interference power to the adjacent communication area equal to or lower than an interference threshold and a communication quality equal to or higher than a quality threshold.