Provided are a method for receiving, by a terminal, a scheduling signaling transmitted by a transmitting node; then, deciding, by the terminal, whether a gap is to be reserved between an uplink signal symbol and an uplink physical channel symbol, and determining a time-frequency resource mapping of an uplink signal and/or an uplink physical channel; or, deciding, by the terminal, whether a predefined signal is to be transmitted on a predefined time-frequency resource within an uplink signal symbol, and determining a time-frequency resource mapping of an uplink signal and/or an uplink physical channel; transmitting, by the terminal, the uplink physical channel and/or the uplink signal, or quitting scheduling and transmitting the uplink physical channel and/or the uplink signal. Thus, when an uplink signal is transmitted on the basis of an LBT, mutual hindrance between an uplink physical channel and an uplink detection signal is effectively reduced.