Method of managing the operation of a first apparatus belonging to a first wireless communication system and adapted to exchange within said first communication system a multi-carriers modulated signal on several sub-carriers, comprising detecting at said first apparatus the eventual presence of an interfering signal emitted from a victim apparatus on at least one sub-carrier, said detecting step comprising receiving at said first apparatus an incident multi-carriers modulated signal, performing a reception processing on said incident signal including an equalization processing providing a first signal and detecting the eventual presence of an interfering signal from a second signal in the frequency domain obtained from said first signal, determining at said first apparatus the path loss between both apparatuses (APP1, APP2), comprising determining the level of said interfering signal and subtracting said level to the transmit power (P Tx_victim) of said interfering signal stored in a data base or sent to the first apparatus, determining from said path loss and from an allowed interference level at said victim apparatus a maximum allowed transmit power on said at least one sub-carrier of a multi-carriers modulated signal to be transmitted from said first apparatus, adjusting within said first apparatus the processing of said multi-carriers modulated signal to be transmitted in accordance with said maximum allowed transmit power for protecting said victim apparatus against interference, said adjusting step is characterised by: not modifying said processing of said multi-carriers modulated signal if the maximum allowed transmit power is included in a first range of maximum allowed transmit power of the first apparatus, otherwise performing an interference avoidance process selected among a set of predetermined interference avoidance processes, in accordance with said maximum allowed transmit power, wherein said set of predetermined interference avoidance processes comprises: a tone nulling, if said maximum allowed transmit power is included in a second range of maximum allowed transmit power of the first apparatus lower than the first range, a side lobe suppression process, if said maximum allowed transmit power is included in a third range of maximum allowed transmit power of the first apparatus lower than the second range, an active interference cancellation process or a band dropping interference avoidance technique, if said maximum allowed transmit power is included in a fourth range of maximum allowed transmit power of the first apparatus lower than the third range. detecting at said first apparatus the eventual presence of an interfering signal emitted from a victim apparatus on at least one sub-carrier, said detecting step comprising receiving at said first apparatus an incident multi-carriers modulated signal, performing a reception processing on said incident signal including an equalization processing providing a first signal and detecting the eventual presence of an interfering signal from a second signal in the frequency domain obtained from said first signal, determining at said first apparatus the path loss between both apparatuses (APP1, APP2), comprising determining the level of said interfering signal and subtracting said level to the transmit power (P Tx_victim) of said interfering signal stored in a data base or sent to the first apparatus, determining from said path loss and from an allowed interference level at said victim apparatus a maximum allowed transmit power on said at least one sub-carrier of a multi-carriers modulated signal to be transmitted from said first apparatus, adjusting within said first apparatus the processing of said multi-carriers modulated signal to be transmitted in accordance with said maximum allowed transmit power for protecting said victim apparatus against interference, said adjusting step is characterised by: not modifying said processing of said multi-carriers modulated signal if the maximum allowed transmit power is included in a first range of maximum allowed transmit power of the first apparatus, otherwise performing an interference avoidance process selected among a set of predetermined interference avoidance processes, in accordance with said maximum allowed transmit power, wherein said set of predetermined interference avoidance processes comprises: a tone nulling, if said maximum allowed transmit power is included in a second range of maximum allowed transmit power of the first apparatus lower than the first range, a side lobe suppression process, if said maximum allowed transmit power is included in a third range of maximum allowed transmit power of the first apparatus lower than the second range, an active interference cancellation process or a band dropping interference avoidance technique, if said maximum allowed transmit power is included in a fourth range of maximum allowed transmit power of the first apparatus lower than the third range. a tone nulling, if said maximum allowed transmit power is included in a second range of maximum allowed transmit power of the first apparatus lower than the first range, a side lobe suppression process, if said maximum allowed transmit power is included in a third range of maximum allowed transmit power of the first apparatus lower than the second range, an active interference cancellation process or a band dropping interference avoidance technique, if said maximum allowed transmit power is included in a fourth range of maximum allowed transmit power of the first apparatus lower than the third range.