Apparatus and method for power control in wireless communication system

A power distribution apparatus of a base station in a wireless communication system, the power distribution apparatus comprising:

• at least one transceiver;
• and
• at least one processor,
• wherein the at least one processor is configured to:
• determine an operation period including one or more transmission time intervals (TTIs),
• identify one or more first cells, in which uplink transmission is to be performed within the operation period, among a first cell group of multiple cell groups configured to a terminal,
• identify one or more second cells, in which uplink transmission is to be performed within the operation period, among a second cell group of the multiple cell groups configured to the terminal,
• perform a power distribution of the multiple cell groups, and
• control the at least one transceiver to transmit, to the terminal, uplink resource allocation information according to a result of the power distribution,
• wherein the one or more first cells are identified by the base station and the one or more second cells are identified by exchanging cell group information with another base station,
• wherein the at least one processor is further configured to:
• allocate, preferentially, power to the first cell group including the identified one or more first cells and the second cell group including the identified one or more second cells, and
• allocate, remaining power to the multiple cell groups excluding the first cell group and the second cell group,
• wherein the uplink transmission of the one or more first cells and the uplink transmission of the one or more second cells comprises physical uplink control channel (PUCCH) transmission or physical uplink shared channel (PUSCH) transmission, and a cell group performing physical uplink control channel (PUCCH) transmission has a higher priority than a cell group performing physical uplink shared channel (PUSCH) transmission between the first cell group and the second cell group, and
• wherein priorities among the multiple cell groups excluding the first cell group and the second cell group are determined based on a priority of each cell included in the multiple cell groups excluding the first cell group and the second cell group, and the priority of each cell is determined based on at least one of a type of information, a channel quality or a type of communication service.