1. A method of transmitting and receiving a signal, which is transmitted and received by a first device in a wireless communication system, the method comprising:transmitting system information indicating subframes for downlink transmission and subframes for uplink transmission; and
transmitting a downlink signal in a specific subframe in which the system information indicates a subframe for the uplink transmission,
wherein the specific subframe is applied to a predetermined time offset determined based on a timing advance applied for the uplink transmission,
wherein the predetermined time offset is a time offset for changing a transmission timing of the specific subframe,
wherein a transmission timing of the downlink signal corresponds to a reception timing of the uplink signal received in the specific subframe through the predetermined time offset, and
wherein the first device transmits, to a second device, information indicating that the predetermined time offset has been applied to the specific subframe.