One embodiment of the present specification provides a method by which a wireless device, to which coverage enhancement (CE) is applied, transmits an uplink channel. The method can comprise a step for receiving, by the wireless device, sounding reference signal (SRS) configuration information for other wireless devices within a cell. The SRS configuration information can comprise information on SRS transmittable subframes. The method can comprise a step for transmitting, by the wireless device, the uplink channel on symbols except for a final symbol on subframes according to a reduced format, when the wireless device transmits the uplink channel on the subframes directed by the subframe information within the SRS configuration information for other wireless devices.