Method and apparatus for allocating resource in wireless communication system

A base station (BS) for allocating time resources of a downlink (DL) physical control channel, the BS comprising:

• a transceiver;
• and
• a controller configured to allocate a first time resource for DL grant including information on at least one time resource used for transmission of DL data;
• control the transceiver to transmit the DL grant on the first time resource;
• allocate a second time resource for uplink (UL) grant including information on at least one time resource used for transmission of UL data, the second time resource starting after the first time resource ends;
• and
• control the transceiver to transmit the UL grant on the second time resource,
• wherein an end time point of the first time resource is changed based on an amount of the DL data, and
• wherein a duration of the first time resource is less than or equal to a first maximum value,
• wherein the first time resource and the second time resource are included in data resource area for DL data transmission.