An interference suppression method used in a reception station to suppress an interfering signal that has been superimposed on a desired signal, the desired signal being transmitted by a partner station with which the reception station is performing communication, the interference suppression method comprising the steps of: acquiring, from the received signal, a characteristic amount thereof, wherein the characteristic amount is a covariance matrix Ruu, which is a correlation between subband signals into which the received baseband signal has been decomposed, the characteristic amount including a between-antenna correlation and power values of the subband signals; identifying (S15, S16) a transmission source, from which the reception station received a signal, as either (i) a suppression target transmission source that has a possibility of transmitting an interfering signal superimposed on the desired signal, or (ii) a non-suppression target transmission source that does not have the possibility of transmitting the interfering signal; when the reception station receives the desired signal, suppressing the interfering signal superimposed on the desired signal by performing weighting and synthesizing with use of a channel estimation H and the characteristic amount of the received signal that was transmitted by the suppression target transmission source, judging whether or not a time when the reception station received the signal is within a transmission prohibition period that has been set in a network to which the reception station belongs, wherein when the judging step judges that the time is within the transmission prohibition period, the identifying step identifies the transmission source as the suppression target transmission source. acquiring, from the received signal, a characteristic amount thereof, wherein the characteristic amount is a covariance matrix Ruu, which is a correlation between subband signals into which the received baseband signal has been decomposed, the characteristic amount including a between-antenna correlation and power values of the subband signals; identifying (S15, S16) a transmission source, from which the reception station received a signal, as either (i) a suppression target transmission source that has a possibility of transmitting an interfering signal superimposed on the desired signal, or (ii) a non-suppression target transmission source that does not have the possibility of transmitting the interfering signal; when the reception station receives the desired signal, suppressing the interfering signal superimposed on the desired signal by performing weighting and synthesizing with use of a channel estimation H and the characteristic amount of the received signal that was transmitted by the suppression target transmission source, judging whether or not a time when the reception station received the signal is within a transmission prohibition period that has been set in a network to which the reception station belongs, wherein when the judging step judges that the time is within the transmission prohibition period, the identifying step identifies the transmission source as the suppression target transmission source.