Uplink control information transmitting method and user equipment, and uplink control information receiving method and base station

A user equipment for transmitting uplink control information (UCI), the user equipment configured with a plurality of cells, the user equipment comprising:

• a radio frequency (RF) unit;
• and
• a processor configured to control the RF unit,
• wherein the processor is configured to:
• control the RF unit to configure a secondary cell group having one or more secondary cells other than cells belonging to a primary cell group having a primary cell among the plurality of cells, and a special secondary cell for transmission of a physical secondary uplink control channel (PUCCH) among the one or more secondary cells in the secondary cell group;
• and
• control the RF unit to transmit at least a first UCI for the primary cell group, a second UCI for the secondary cell group, or a third UCI for the primary and secondary cell groups on the primary cell group or the secondary cell group,
• wherein the first UCI is transmitted on the primary cell, the second UCI is transmitted on the secondary cells, and the third UCI is transmitted on either the primary cell or the special secondary cell.

A method for receiving, by a base station, uplink control information (UCI) from a user equipment configured with a plurality of cells, the method comprising:

• configuring, for the user equipment, a secondary cell group having one or more secondary cells other than cells belonging to a primary cell group having a primary cell among the plurality of cells, and a special secondary cell for transmission of a physical secondary uplink control channel (PUCCH) among the one or more secondary cells in the secondary cell group;
• and
• receiving at least a first UCI for the primary cell group, a second UCI for the secondary cell group, or a third UCI for the primary and secondary cell groups on the primary cell group or the secondary cell group;
• wherein the first UCI is received on the primary cell, the second UCI is received on the secondary cells, and the third UCI is received on either the primary cell or the special secondary cell.

A base station for receiving uplink control information (UCI) from a user equipment configured with a plurality of cells, the base station comprising:

• a radio frequency (RF) unit, and
• a processor configured to control the RF unit,
• wherein the processor is configured to:
• configure, for the user equipment, a secondary cell group having one or more secondary cells other than cells belonging to a primary cell group having a primary cell among the plurality of cells, and a special secondary cell for transmission of a physical secondary uplink control channel (PUCCH) among the one or more secondary cells in the secondary cell group;
• and
• control the RF unit to receive at least a first UCI for the primary cell group, a second UCI for the secondary cell group, or a third UCI for the primary and secondary cell groups on the primary cell group or the secondary cell group,
• wherein the first UCI is received on the primary cell, the second UCI is received on the secondary cells, and the third UCI is received on either the primary cell or the special secondary cell.