Method and apparatus for multi-user scheduling in wireless communication system

A base station in a wireless communication system, the base station comprising:

• a transceiver;
• a memory configured to store a plurality of instructions;
• and
• at least one processor coupled to the transceiver and configured to execute the plurality of instructions, to
• determine a UE candidate group set based on channel state information for the channels of the plurality of carriers,
• determine to adjust a number of UEs of the UE candidate group set, based on frequency selectivity information between a representative channel selected from the channels of the plurality of carriers and other channels of the plurality of carriers, wherein the frequency selectivity information indicates a difference between the representative channel and the other channels, and
• transmit, to a plurality of UEs, the data on the representative channel,
• wherein, in case that the difference is less than a threshold value, a number of the plurality of UEs is greater than the number of UEs of the UE candidate group set, and
• wherein, in case that the difference is greater than the threshold value, the number of the plurality of UEs is less than the number of UEs of the UE candidate group set.