A user equipment for performing multi-RAT concurrent transmission according to an embodiment of the present invention receives, from a base station, information on subframe sets and power management parameters to be applied to each of the subframe sets, sets the maximum transmission power of each of a first RAT signal and a second RAT signal using the power management parameters, and transmits at least one of the first RAT signal and the second RAT signal based on the set maximum transmission power. The subframe sets may include a first subframe set in which only transmission of the first RAT signal is allowed and a second subframe set in which multi-RAT concurrent transmission is allowed, and the power management parameters may include a parameter for limiting the maximum transmission power of the second RAT signal to be transmitted concurrently with the first RAT signal in the second subframe set.