Transmission of UL control channels with dynamic structures

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

• transmitting, to a terminal, downlink control information (DCI) for scheduling a physical downlink shared channel (PDSCH), wherein the DCI comprises information associated with a slot for a physical uplink control channel (PUCCH) and information associated with a PUCCH format among at least one PUCCH format;
• and
• receiving, from the terminal in the slot, a demodulation reference signal (DMRS) for hybrid automatic repeat request acknowledgement (HARQ-ACK) information for the PDSCH and the HARQ-ACK information, wherein the HARQ-ACK information is applied with a sequence and an orthogonal sequence based on the PUCCH format,
• wherein a number of symbols of the PUCCH format comprises variable and even number, and
• wherein the DMRS for the HARQ-ACK information is mapped to at least one symbol with even-numbered index including index 0 within the symbols of the PUCCH format, and the HARQ-ACK information is mapped to at least one symbol with odd-numbered index within the symbols of the PUCCH format.

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, downlink control information (DCI) for scheduling a physical downlink shared channel (PDSCH), wherein the DCI comprises information associated with a slot for a physical uplink control channel (PUCCH) and information associated with a PUCCH format among at least one PUCCH format,
• apply a sequence and an orthogonal sequence to hybrid automatic repeat request acknowledgement (HARQ-ACK) information for the PDSCH, and
• transmit, to the base station in the slot, a demodulation reference signal (DMRS) for the HARQ-ACK information and the HARQ-ACK information applied with the sequence and the orthogonal sequence based on the PUCCH format,
• wherein a number of symbols of the PUCCH format comprises variable and even number, and
• wherein the DMRS for the HARQ-ACK information is mapped to at least one symbol with even-numbered index including index 0 within the symbols of the PUCCH format, and the HARQ-ACK information is mapped to at least one symbol with odd-numbered index with the symbols of the PUCCH format.

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

• a transceiver configured to transmit and receive a signal;
• and
• a controller configured to:
• transmit, to a terminal, downlink control information (DCI) for scheduling a physical downlink shared channel (PDSCH), wherein the DCI comprises information associated with a slot for a physical uplink control channel (PUCCH) and information associated with a PUCCH format among at least one PUCCH format, and
• receive, from the terminal in the slot, a demodulation reference signal (DMRS) for hybrid automatic repeat request acknowledgement (HARQ-ACK) information for the PDSCH and the HARQ-ACK information, wherein the HARQ-ACK information is applied with a sequence and an orthogonal sequence based on the PUCCH format,
• wherein a number of symbols of the PUCCH format comprises variable and even number, and
• wherein the DMRS for the HARQ-ACK information is mapped to at least one symbol with even-numbered index including index 0 within the symbols of the PUCCH format, and the HARQ-ACK information is mapped to at least one symbol with odd-numbered index within the symbols of the PUCCH format.