Patent ID: 9693264
Date: 2017-06-27
CPC Classifications: H04L,H04W

Claim:
1. A method of transmitting a signal on an unlicensed band, which is transmitted by an eNode B in a wireless communication system, the method comprising: transmitting a physical downlink control channel (PDCCH) on a licensed band; transmitting a physical downlink shared channel (PDSCH) on a time period of the unlicensed band corresponding to a subframe to which the PDCCH is transmitted; performing a carrier sensing for the unlicensed band to transmit the PDSCH; and if a timing point of which the unlicensed band is available is ahead of a pre-set timing point as a result of the carrier sensing, transmitting a reservation signal from the timing point of which the unlicensed band is available to the pre-set timing point, wherein the pre-set timing point corresponding to an end of a time duration in which the reservation signal is transmitted is determined whether a scheduling of the PDSCH is performed prior to the carrier sensing, wherein if the scheduling of the PDSCH is performed after the carrier sensing, the pre-set timing point corresponds to a transmission start point of the subframe to which the PDCCH is transmitted, and wherein if the carrier sensing is performed after the scheduling of the PDSCH, the pre-set timing point corresponds to an nth (0<n≦8) OFDM (Orthogonal frequency-division multiplexing) symbol of the subframe to which the PDCCH is transmitted.