KT Corporation
METHOD AND APPARATUS FOR TRANSMITTING OR RECEIVING DATA IN UNLICENSED BAND

Abstract:

Provided are a method and apparatus for transmitting or receiving data in an unlicensed band. The method may include: receiving configuration information of one or more subbands relating to a cell system bandwidth included in an unlicensed band or a bandwidth part included in an unlicensed band; receiving downlink control information including uplink frequency domain resource allocation information for uplink data transmission in the bandwidth part or the system bandwidth; on the basis of the resource allocation information, performing an LBT operation on each of subbands including frequency resources allocated for the uplink data transmission; and on the basis of the result of the LBT operation, determining a subband for transmitting uplink data; and transmitting the uplink data in the determined subband.