The present invention discloses a method of transmitting/receiving signals by a terminal supporting EN-DC. The method comprises determining a number of interrupted slots; and transmitting or receiving the signals based on the number of interrupted slots, wherein the signals are not transmitted or received during the interrupted slots, wherein the number of interrupted slots is determined based on SCS of cell supporting the NR, a MG offset, and a MGL, and wherein the number of interrupted slots is 7 when the SCS is 15 kHz, the MG offset is 0.5 ms, and the MGL is 6 ms.