Method and device for multiplexing uplink control channels in wireless communication system

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

• a transceiver;
• and
• at least one processor coupled with the transceiver and configured to:
• allocate a first physical uplink control channel (PUCCH) resource of a format 3 to a first terminal,
• identify a position of a first demodulation reference signal (DMRS) for the first PUCCH resource,
• allocate a second PUCCH resource of a format 0 to a second terminal, the second PUCCH resource is allocated to the position of the first DMRS,
• transmit information on the allocation of the first PUCCH resource and the second PUCCH resource, and
• receive uplink control information through the first PUCCH resource and the second PUCCH resource,
• wherein the first DMRS and the second PUCCH resource are multiplexed in the position of the first DMRS, and
• wherein a residual cyclic shift of the format 3 is determined for the second terminal.

A method performed by a first terminal in a wireless communication system, the method comprising:

• receiving, from a base station (BS), information on allocation of the first PUCCH resource of a format 3;
• and
• transmitting uplink control information through the first PUCCH resource,
• wherein a first demodulation reference signal (DMRS) of the first PUCCH resource and a second PUCCH resource for a second terminal are multiplexed in a position of the first DMRS for the first PUCCH resource,
• wherein a residual cyclic shift of the format 3 is determined for the second terminal, and
• wherein the second PUCCH resource of a format 0 is allocated based on the position of the first DMRS for the first PUCCH resource.

A first terminal in a wireless communication system, the first terminal comprising:

• a transceiver;
• and
• at least one processor coupled with the transceiver and configured to:
• receive, from a base station (BS), information on allocation of the first PUCCH resource of a format 3, and
• transmit uplink control information through the first PUCCH resource, and
• wherein a first demodulation reference signal (DMRS) of the first PUCCH resource and a second PUCCH resource for a second terminal are multiplexed in a position of the first DMRS for the first PUCCH resource,
• wherein a residual cyclic shift of the format 3 is determined for the second terminal, and
• wherein the second PUCCH resource of a format 0 is allocated based on the position of the first DMRS for the first PUCCH resource.