A network system for reducing interference in a communication network having a plurality of base stations and a plurality of terminals, wherein a main base station among the plurality of base stations and a terminal among the plurality of terminals that is designated to that main base station form a pair for transmitting and/or receiving a signal, wherein, for each terminal, a signal, transmitted by the main base station to which it is designated, is received by that terminal as a main signal, and wherein the signal, transmitted by the main base station to which it is not designated, is received by that terminal as an interference signal, the system comprising: a base station control unit comprising a receiver configured to receive signal quality information associated with each of the terminals that are included in the service coverage of the base stations, respectively, and a decision unit configured to determine whether to apply at least one of an interference control scheme and a transmission power control scheme to a signal output by each of the base stations that is received by the plurality of terminals, based on the signal quality information, and to output a respective corresponding control signal to each of the base stations; wherein each base station comprises: a selection unit configured to select at least one of the interference control scheme and the transmission power control scheme with respect to the plurality of terminals according to the control signal; a radio resource management unit configured to manage radio resources that are pre-allocated to apply at least one of the interference control scheme and the transmission power control scheme; and a signal transmitter configured to, depending on a result of said selecting, apply any one of the interference control scheme and the transmission power control scheme to the radio resources to thereby transmit a signal to the plurality of terminals; wherein the selection unit selects at least one of the interference control scheme and the transmission power control scheme by referring to the radio resource management unit; wherein the interference control scheme is one of an interference alignment scheme, an interference neutralization scheme, an interference cancellation scheme, and an interference treated as noise scheme. a base station control unit comprising a receiver configured to receive signal quality information associated with each of the terminals that are included in the service coverage of the base stations, respectively, and a decision unit configured to determine whether to apply at least one of an interference control scheme and a transmission power control scheme to a signal output by each of the base stations that is received by the plurality of terminals, based on the signal quality information, and to output a respective corresponding control signal to each of the base stations; wherein each base station comprises: a selection unit configured to select at least one of the interference control scheme and the transmission power control scheme with respect to the plurality of terminals according to the control signal; a radio resource management unit configured to manage radio resources that are pre-allocated to apply at least one of the interference control scheme and the transmission power control scheme; and a signal transmitter configured to, depending on a result of said selecting, apply any one of the interference control scheme and the transmission power control scheme to the radio resources to thereby transmit a signal to the plurality of terminals; wherein the selection unit selects at least one of the interference control scheme and the transmission power control scheme by referring to the radio resource management unit; a selection unit configured to select at least one of the interference control scheme and the transmission power control scheme with respect to the plurality of terminals according to the control signal; a radio resource management unit configured to manage radio resources that are pre-allocated to apply at least one of the interference control scheme and the transmission power control scheme; and a signal transmitter configured to, depending on a result of said selecting, apply any one of the interference control scheme and the transmission power control scheme to the radio resources to thereby transmit a signal to the plurality of terminals; wherein the selection unit selects at least one of the interference control scheme and the transmission power control scheme by referring to the radio resource management unit; wherein the interference control scheme is one of an interference alignment scheme, an interference neutralization scheme, an interference cancellation scheme, and an interference treated as noise scheme.