Disclosed in the present application is a method for transmitting a signal from a network by a terminal supporting dual connectivity between a first radio access technology (RAT) and a second RAT in a wireless communication system. Specifically, the method comprises the steps of: reporting, to the network, capability information including an information transmission time from a processor for the first RAT to a processor for the second RAT; receiving a first uplink grant for transmitting a first RAT uplink signal, and transmitting the first RAT uplink signal on the basis of the first uplink grant; and receiving a second uplink grant for transmitting a second RAT uplink signal, and transmitting the second RAT uplink signal on the basis of the second uplink grant.