A wireless communication apparatus comprising: a transmission unit configured to transmit a wireless signal; a reception unit configured to receive a wireless signal; a transmission power control unit configured to control a transmission power of the transmission unit; an interference suppression unit configured to instruct the transmission power control unit to change the transmission power to suppress interference to terminal stations within a receivable range of the wireless communication apparatus in accordance with a belonging condition of the terminal stations; and a signal detection capability control unit configured to control a signal detection capability of the reception unit, characterized in that the wireless communication apparatus and a first plurality of the terminal stations belong to a first group and a second plurality of the terminal stations belong to a second group, and that the interference suppression unit is further configured to, in a first belonging condition, where one of the terminal stations estimated to be most distant within the receivable range belongs to the first group, decide that the wireless communication apparatus communicates with the one of the terminal stations and instruct the transmission power control unit to control the transmission power at a given power without changing the transmission power for the first belonging condition; and in a second belonging condition, where the one of the terminal stations estimated to be most distant within the receivable range belongs to the second group, decide that the wireless communication apparatus does not communicate with the one of the terminal stations, instruct the transmission power control unit to reduce the transmission power and instruct the signal detection capability control unit to control the signal detection capability of the reception unit in accordance with the reduced transmission power. a transmission unit configured to transmit a wireless signal; a reception unit configured to receive a wireless signal; a transmission power control unit configured to control a transmission power of the transmission unit; an interference suppression unit configured to instruct the transmission power control unit to change the transmission power to suppress interference to terminal stations within a receivable range of the wireless communication apparatus in accordance with a belonging condition of the terminal stations; and a signal detection capability control unit configured to control a signal detection capability of the reception unit, characterized in that the wireless communication apparatus and a first plurality of the terminal stations belong to a first group and a second plurality of the terminal stations belong to a second group, and that the interference suppression unit is further configured to, in a first belonging condition, where one of the terminal stations estimated to be most distant within the receivable range belongs to the first group, decide that the wireless communication apparatus communicates with the one of the terminal stations and instruct the transmission power control unit to control the transmission power at a given power without changing the transmission power for the first belonging condition; and in a second belonging condition, where the one of the terminal stations estimated to be most distant within the receivable range belongs to the second group, decide that the wireless communication apparatus does not communicate with the one of the terminal stations, instruct the transmission power control unit to reduce the transmission power and instruct the signal detection capability control unit to control the signal detection capability of the reception unit in accordance with the reduced transmission power. in a first belonging condition, where one of the terminal stations estimated to be most distant within the receivable range belongs to the first group, decide that the wireless communication apparatus communicates with the one of the terminal stations and instruct the transmission power control unit to control the transmission power at a given power without changing the transmission power for the first belonging condition; and in a second belonging condition, where the one of the terminal stations estimated to be most distant within the receivable range belongs to the second group, decide that the wireless communication apparatus does not communicate with the one of the terminal stations, instruct the transmission power control unit to reduce the transmission power and instruct the signal detection capability control unit to control the signal detection capability of the reception unit in accordance with the reduced transmission power.