Method and device for configuring demodulation reference signal for uplink control channel in wireless cellular communication system

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

• transmitting, to a terminal, a control message including first information configuring a physical uplink control channel (PUCCH) resource of PUCCH format 2, second information associated with a demodulation reference signal (DMRS) for a physical uplink shared channel (PUSCH) of a mapping type A, and third information associated with a DMRS for a PUSCH of a mapping type B;
• identifying the PUCCH resource based on the first information;
• and
• receiving, from the terminal, on the PUCCH resource, a DMRS for PUCCH format 2 based on the control message,
• wherein a sequence of the DMRS for PUCCH format 2 is generated based on a scrambling identity (ID) included in the third information of the control message.

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

• a transceiver configured to transmit and receive a signal;
• and
• a controller configured to:
• receive, from a base station, a control message including first information configuring a physical uplink control channel (PUCCH) resource of PUCCH format 2, second information associated with a demodulation reference signal (DMRS) for a physical uplink shared channel (PUSCH) of a mapping type A, and third information associated with a DMRS for a PUSCH of a mapping type B,
• generate a sequence of a DMRS for PUCCH format 2 based on a scrambling identity (ID) included in the third information of the control message, and
• transmit, to the base station, on the PUCCH resource identified based on the first information, the DMRS for PUCCH format 2 based on the control message.

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

• receiving, from a base station, a control message including first information configuring a physical uplink control channel (PUCCH) resource of a PUCCH format 2, second information associated with a demodulation reference signal (DMRS) for a physical uplink shared channel (PUSCH) of a mapping type A, and third information associated with a DMRS for a PUSCH of a mapping type B;
• generating a sequence of a DMRS for PUCCH format 2 based on a scrambling identity (ID) included in the third information of the control message;
• and
• transmitting, to the base station, on the PUCCH resource identified based on the first information, the DMRS for PUCCH format 2 based on the control message.