Method for transmitting/receiving data in wireless communication system, and device for supporting same
A method for transmitting/receiving data in a wireless communication system and a device for supporting same are presented. Particularly, a method by which a terminal receives a physical downlink shared channel (PDSCH) in a wireless communication system comprises the steps of: receiving, from a base station, downlink control information (DCI) for scheduling the PDSCH in a nth transmission time unit; and determining whether the PDSCH is received on the basis of the DCI, wherein the DCI includes information for indicating whether a demodulation reference signal (DMRS) for the PDSCH exists in the nth transmission time unit.
1. A method of receiving, by a terminal, a physical downlink shared channel (PDSCH) in a wireless communication system, the method comprising:
transmitting, to a base station, capability information representing whether the terminal supports demodulation reference signal (DMRS)-sharing over a plurality of subframes for the PDSCH;
receiving, from the base station, downlink control information (DCI) for scheduling the PDSCH, wherein the DCI represents whether a DMRS for the PDSCH is located in a first subslot; and
receiving, from the base station, the PDSCH based on the DCI,
wherein based on (i) the capability information representing that the terminal does not support DMRS-sharing over the plurality of subframes for the PDSCH, and (ii) the DCI representing an absence of the DMRS for the PDSCH in the first subslot, the PDSCH is not received in the first subslot.
2. The method of claim 1 , wherein based on (i) the capability information representing that the terminal does support DMRS-sharing over a plurality of subframes for the PDSCH, and (ii) the DCI representing a presence of the DMRS for the PDSCH in the first subslot, the PDSCH is received in the first subslot.
3. The method of claim 1 , wherein the first subslot is configured with three orthogonal frequency division multiplexing (OFDM) symbols.
4. The method of claim 1 , wherein the DMRS-sharing for the PDSCH includes an operation for sharing a DMRS in two or more subslots over the plurality subframes which are consecutive.
5. The method of claim 1 , wherein the PDSCH is scheduled based on a subslot unit in time domain.
6. The method of claim 1 , wherein the first subslot is subslot 0 .
7. The method of claim 1 , wherein the DCI includes DMRS related information, and the DMRS related information represents whether the DMRS for the PDSCH is located in the first subslot.
8. A terminal configured to receive a physical downlink shared channel (PDSCH) in a wireless communication system, the terminal comprising:
a transceiver;
at least one processor; and
at least one memory operatively connected to the at least one processor,
wherein the at least one memory stores instructions that, based on being executed by the at least one processor, perform operations comprising:
transmitting, to a base station, capability information representing whether the terminal supports demodulation reference signal (DMRS)-sharing over a plurality of subframes for the PDSCH;
receiving, from the base station, downlink control information (DCI) for scheduling the PDSCH, wherein the DCI represents whether a DMRS for the PDSCH is located in a first subslot; and
receiving, from the base station, the PDSCH based on the DCI, and
wherein based on (i) the capability information representing that the terminal does not support DMRS-sharing over the plurality of subframes for the PDSCH, and (ii) the DCI representing an absence of the DMRS for the PDSCH in the first subslot, the PDSCH is not received in the first subslot.
9. The terminal of claim 8 , wherein based on (i) the capability information representing that the terminal does support DMRS-sharing over a plurality of subframes for the PDSCH, and (ii) the DCI representing a presence of the DMRS for the PDSCH in the first subslot, the PDSCH is received in the first subslot.
10. The terminal of claim 8 , wherein the DMRS-sharing for the PDSCH includes an operation for sharing a DMRS in two or more subslots over the plurality of subframes which are consecutive.
11. The terminal of claim 8 , wherein the PDSCH is scheduled based on a subslot unit in time domain.
12. The terminal of claim 8 , wherein the first subslot is configured with three orthogonal frequency division multiplexing (OFDM) symbols.
13. The terminal of claim 8 , wherein the first subslot is subslot 0 .
14. The terminal of claim 8 , wherein the DCI includes DMRS related information, and the DMRS related information represents whether the DMRS for the PDSCH is located in the first subslot.
15. A processing apparatus configured to control a terminal to receive a physical downlink shared channel (PDSCH) in a wireless communication system, the processing apparatus comprising:
at least one processor; and
at least one memory operably connectable to the at least one processor and storing instruction that, based on being executed by the at least one processor, perform opeartions comprising:
transmitting, to a base station, capability information representing whether the terminal supports demodulation reference signal (DMRS)-sharing over a plurality of subframes for the PDSCH;
receiving, from a base station, downlink control information (DCI) for scheduling the PDSCH, wherein the DCI represents whether a DMRS for the PDSCH is located in a first subslot; and
receiving, from the base station, the PDSCH based on the DCI, and
wherein based on (i) the capability information representing that the terminal does not support DMRS-sharing over the plurality of subframes for the PDSCH, and (ii) the DCI representing an absence of the DMRS for the PDSCH in the first subslot, the PDSCH is be received in the first subslot.
16. The processing apparatus of claim 15 , wherein, based on (i) the capability information representing that the terminal does support DMRS-sharing over a plurality of subframes for the PDSCH, and (ii) the DCI representing a presence of the DMRS for the PDSCH in the first subslot, the PDSCH is received in the first subslot.
17. The processing apparatus of claim 15 , wherein the DMRS-sharing for the PDSCH includes an operation for sharing a DMRS in two or more subslots over the plurality of subframes which are consecutive.
18. The processing apparatus of claim 15 , wherein the PDSCH is scheduled based on a subslot unit in time domain.
19. The processing apparatus of claim 15 , wherein the first subslot is configured with three orthogonal frequency division multiplexing (OFDM) symbols.
20. The processing apparatus of claim 15 , wherein the first subslot is subslot 0 , and wherein the DCI includes DMRS related information, and the DMRS related information represents whether the DMRS for the PDSCH is located in the first subslot.