CPC H04W 74/0808 (2013.01) [H04L 12/413 (2013.01); H04W 16/14 (2013.01); H04W 52/143 (2013.01); H04W 52/245 (2013.01); H04W 52/367 (2013.01)] | 6 Claims |
1. A method performed by a base station in a wireless communication system, the method comprising:
identifying a signal to be transmitted, wherein the signal is a first signal or a second signal;
determining an energy detection threshold for sensing based on the identified signal, wherein the energy detection threshold corresponds to the first signal or the second signal;
identifying a detected power corresponding to a channel of an unlicensed band;
determining whether the channel is idle, based on the detected power and the determined energy detection threshold; and
transmitting, to a user equipment (UE), the first signal or the second signal on the channel, based on a determination that the channel is idle,
wherein the second signal includes at least one discovery signal, and the first signal is different from the second signal,
wherein an energy detection threshold corresponding to the second signal is greater than an energy detection threshold corresponding to the first signal, and
wherein the determining whether the channel is idle based on the detected power and the determined energy detection threshold comprises:
identifying whether the detected power for a predetermined time period is less than the determined energy detection threshold; and
determining that the channel is idle in case that the detected power is less than the determined energy detection threshold.
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