One embodiment of the present specification discloses a method by which a serving cell transmits support information for removing interference of a terminal. The method comprises: a step for determining, by the serving cell, a downlink timing offset with neighboring interference cells; and a step for to determining, by the serving cell, a channel corresponding to an interference removal target among neighboring interference cells according to the timing offset. Here, the channel to have interference removed can be the channel interfering in a control channel for the serving cell according to the timing offset. The method further includes a step for enabling the serving cell to generate the interference removal support information on the determined channel and transmit the generated information to a terminal.