Method and user equipment of transmitting uplink signal in wireless communication system, and method and base station of receiving uplink signal in wireless communication system

1. A method of transmitting an uplink (UL) signal by a user equipment (UE) configured for simultaneous physical uplink shared channel (PUSCH) and physical uplink control channel (PUCCH) transmission in a wireless communication system, the method comprising:

receiving, through a physical downlink control (PDCCH), downlink control information (DCI) regarding subslot-based semi-persistent scheduling (SPS) PUSCH, wherein the DCI includes a demodulation reference signal (DMRS) pattern-related field for the UE to transmit a an uplink (UL) DMRS related to the subslot-based SPS PUSCH;

determining whether to transmit uplink control information (UCI), in subslot n, through the subslot-based SPS PUSCH or through a PUCCH, based on whether the DMRS pattern-related field in the DCI is set to a first value or a second value; and

transmitting the UCI through the subslot-based SPS PUSCH in the subslot n, without simultaneously transmitting the PUCCH in the subslot n, based on the DMRS pattern-related field in the DCI being set to the first value,

wherein the first value of the DMRS pattern-related field indicates that the UL DMRS is not mapped to at least one subslot among a plurality of subslots in which the subslot-based SPS PUSCH is transmitted, and

wherein the second value of the DMRS pattern-related field indicates that the UL DMRS is mapped to every subslot among the plurality of subslots in which the subslot-based SPS PUSCH is transmitted.

2. The method of claim 1 , wherein a periodicity of the subslot-based SPS PUSCH is configured to be one subslot.

3. The method of claim 1 , wherein a transmission of the PUCCH is configured to overlap in time with a transmission of the subslot-based SPS PUSCH during the subslot n.

4. The method of claim 1 , wherein, based on the DMRS pattern-related field being set to the first value, a one-time UL DMRS transmission is configured to be shared between a plurality of subslot-based SPS PUSCH transmissions which are transmitted in different subslots.

5. The method of claim 1 , wherein the DMRS pattern-related field indicates whether the subslot-based SPS PUSCH and the UL DMRS are transmitted in a same subslot.

6. The method of claim 5 , wherein, based on the DMRS pattern-related field being set to the first value, the subslot-based SPS PUSCH and the UL DMRS are transmittable in different subslots, and

wherein based on the DMRS pattern-related field being set to the second value, the subslot-based SPS PUSCH and the UL DMRS are restricted to be transmitted in a same subslot.

7. The method of claim 5 , wherein, based on the DMRS pattern-related field being set to the first value:

a first UL DMRS, for a first subslot-based SPS PUSCH that was transmitted in subslot #1, is transmitted in subslot #2, and

a second UL DMRS, for a second subslot based SPS PUSCH that was transmitted in subslot #3, is transmitted in subslot #4.

8. The method of claim 1 , wherein the DMRS pattern-related field has a size of 2 bits, and

wherein the first value of the DMRS pattern-related field has a bit value of ‘10’.

9. The method of claim 1 , wherein transmitting the UCI through the subslot-based SPS PUSCH in the subslot n, without simultaneously transmitting the PUCCH in the subslot n, based on the DMRS pattern-related field in the DCI being set to the first value comprises:

transmitting the UCI through the subslot-based SPS PUSCH in the subslot n, and dropping a transmission of the PUCCH in the subslot n, regardless of whether a transmission power of the subslot-based SPS PUSCH is changed due to the PUCCH.

10. The method of claim 1 , wherein a plurality of UL SPS configurations is configured for the UE in relation to UL SPS, and

wherein different hybrid automatic repeat request (HARD) process sets are associated with the plurality UL SPS configurations, respectively.

11. The method of claim 1 , wherein the UCI comprises HARQ acknowledgment/negative acknowledgment (ACK/NACK) information.

12. The method of claim 1 , further comprising:

based on the DMRS pattern-related field in the DCI being set to the second value, transmitting the UCI through the PUCCH in the subslot n, while simultaneously transmitting the subslot-based SPS PUSCH in the subslot n.

13. A method of receiving an uplink (UL) signal by a base station (BS) from a user equipment (UE) configured for simultaneous physical uplink shared channel (PUSCH) and physical uplink control channel (PUCCH) transmission in a wireless communication system, the method comprising:

transmitting, to the UE through a physical downlink control (PDCCH), downlink control information (DCI) regarding subslot-based semi-persistent scheduling (SPS) PUSCH, wherein the DCI includes a demodulation reference signal (DMRS) pattern-related field for the UE to transmit a an uplink (UL) DMRS related to the subslot-based SPS PUSCH; and

receiving uplink control information (UCI), in subslot n, from the UE through the subslot-based SPS PUSCH or through a PUCCH, based on whether the DMRS pattern-related field in the DCI is set to a first value or a second value,

wherein the UCI is received through the subslot-based SPS PUSCH in the subslot n, without simultaneously receiving the PUCCH in the subslot n, based on the DMRS pattern-related field in the DCI being set to the first value,

wherein the first value of the DMRS pattern-related field indicates that the UL DMRS is not mapped to at least one subslot among a plurality of subslots in which the subslot-based SPS PUSCH is received, and

wherein the second value of the DMRS pattern-related field indicates that the UL DMRS is mapped to every subslot among the plurality of subslots in which the subslot-based SPS PUSCH is received.

14. A user equipment (UE) configured for simultaneous physical uplink shared channel (PUSCH) and physical uplink control channel (PUCCH) transmission in a wireless communication system, the UE comprising:

a transceiver;

at least one processor; and

at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations comprising:

receiving, through a physical downlink control (PDCCH) via the transceiver, downlink control information (DCI) regarding subslot-based semi-persistent scheduling (SPS) PUSCH, wherein the DCI includes a demodulation reference signal (DMRS) pattern-related field for the UE to transmit a an uplink (UL) DMRS related to the subslot-based SPS PUSCH;

determining whether to transmit uplink control information (UCI), in subslot n, through the subslot-based SPS PUSCH or through a PUCCH, based on whether the DMRS pattern-related field in the DCI is set to a first value or a second value; and

transmitting, via the transceiver, the UCI through the subslot-based SPS PUSCH in the subslot n, without simultaneously transmitting the PUCCH in the subslot n, based on the DMRS pattern-related field in the DCI being set to the first value,

wherein the first value of the DMRS pattern-related field indicates that the UL DMRS is not mapped to at least one subslot among a plurality of subslots in which the subslot-based SPS PUSCH is transmitted, and

wherein the second value of the DMRS pattern-related field indicates that the UL DMRS is mapped to every subslot among the plurality of subslots in which the subslot-based SPS PUSCH is transmitted.

15. A base station (BS) configured to receive an uplink (UL) signal from a user equipment (UE) configured for simultaneous physical uplink shared channel (PUSCH) and physical uplink control channel (PUCCH) transmission, the BS comprising:

a transceiver;

at least one processor; and

at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations comprising:

transmitting, to the UE through a physical downlink control (PDCCH) via the transceiver, downlink control information (DCI) regarding subslot-based semi-persistent scheduling (SPS) PUSCH, wherein the DCI includes a demodulation reference signal (DMRS) pattern-related field for the UE to transmit a an uplink (UL) DMRS related to the subslot-based SPS PUSCH; and

receiving, from the UE via the transceiver in subslot n, uplink control information (UCI) through the subslot-based SPS PUSCH or through a PUCCH, based on whether the DMRS pattern-related field in the DCI is set to a first value or a second value,

wherein the UCI is received through the subslot-based SPS PUSCH in the subslot n, without simultaneously receiving the PUCCH in the subslot n, based on the DMRS pattern-related field in the DCI being set to the first value,

wherein the first value of the DMRS pattern-related field indicates that the UL DMRS is not mapped to at least one subslot among a plurality of subslots in which the subslot-based SPS PUSCH is received, and

wherein the second value of the DMRS pattern-related field indicates that the UL DMRS is mapped to every subslot among the plurality of subslots in which the subslot-based SPS PUSCH is received.