CPC H04W 74/08 (2013.01) [H04W 72/0453 (2013.01)] | 20 Claims |
1. A method for multiple sub-bands access by a base station (BS) in a wireless communication system, the method comprising:
identifying at least one hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback corresponding to at least one physical downlink shared channel (PDSCH) in a reference duration for a downlink channel occupancy, wherein the at least one PDSCH in the reference duration includes a PDSCH that partially but not fully overlaps with a sub-band among multiple sub-bands;
determining a contention window for the sub-band among the multiple sub-bands, based on the at least one HARQ-ACK feedback including a HARQ-ACK feedback corresponding to the PDSCH that partially but not fully overlaps with the sub-band among the multiple sub-bands;
identifying a number within the contention window for the sub-band;
sensing the sub-band based on the number and a defer duration; and
performing a downlink transmission on the sub-band, in case that the sub-band is sensed to be idle,
wherein the reference duration includes a first slot corresponding to transmission of the at least one PDSCH within the downlink channel occupancy.
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