Method and device for wireless signal transmission or reception in wireless communication system
The present invention relates to a wireless communication system and, specifically, to a method comprising the steps of: repeatedly transmitting a PUSCH; and repeatedly receiving the PDSCH in a DL duration immediately following after repeated transmission of the PDSCH, wherein when a terminal operates in an in-band mode, each PDSCH is received from an OFDM symbol subsequent to a k-th OFDM symbol in each corresponding time unit within the DL duration (k>1), and in the case where the terminal operates in a guard-band mode or a stand-alone mode, signal reception is skipped at a starting portion of the DL duration when the PDSCH is repeatedly received.
1. A method of receiving a signal by a user equipment (UE) in a time-domain duplexing (TDD)-based wireless communication system, the method comprising:
detecting a narrowband physical downlink control channel (NPDCCH); and
based on the detection of the NPDCCH, receiving a narrowband physical downlink shared channel (NPDSCH) in a downlink subframe on a carrier, wherein the downlink subframe immediately follows an uplink subframe,
wherein, based on the carrier being in an in-band mode, the NPDSCH is received starting from k th (k>1) orthogonal frequency division multiplexing (OFDM) symbol, without skipping any part of the NPDSCH, and
wherein, based on the carrier being in a guard-band or stand-alone mode, the NPDSCH is received, with skipping a starting part of the NPDSCH.
2. The method according to claim 1 , wherein the UE includes a narrowband Internet of things (NB-IoT) UE.
3. The method according to claim 1 , wherein, based on the carrier being in the guard-band or stand-alone mode, the reception of the NPDSCH is skipped in at least part of 1 st OFDM symbol of the downlink subframe.
4. The method according to claim 3 , wherein, based on the carrier being in the guard-band or stand-alone mode, the NPDSCH is placed starting from 1 st OFDM symbol of the downlink subframe.
5. The method according to claim 1 , wherein the NPDSCH is received, without skipping any part of the NPDSCH, further based on two hybrid automatic repeat request (HARQ) processes being configured.
6. The method according to claim 1 , wherein a subcarrier spacing used for the NPDSCH is 15 kHz.
7. The method according to claim 1 , wherein the wireless communication system includes a 3rd party partnership project (3GPP)-based wireless communication system.
8. A user equipment (UE) in a time-domain duplexing (TDD)-based wireless communication system, the UE comprising:
a radio frequency (RF) module; and
a processor,
wherein the processor is configured to detect a narrowband physical downlink control channel (NPDCCH), and, based on the detection of the NPDCCH, receive a narrowband physical downlink shared channel (NPDSCH) in a downlink subframe on a carrier, wherein the downlink subframe immediately follows an uplink subframe,
wherein, based on the carrier being in an in-band mode, the NPDSCH is received starting from k th (k>1) orthogonal frequency division multiplexing (OFDM) symbol, without skipping any part of the NPDSCH, and
wherein, based on the carrier being in a guard-band or stand-alone mode, the NPDSCH is received, with skipping a starting part of the NPDSCH.
9. The UE according to claim 8 , wherein the UE includes a narrowband Internet of things (NB-IoT) UE.
10. The UE according to claim 8 , wherein, based on the carrier being in the guard-band or stand-alone mode, the reception of the NPDSCH is skipped in at least part of 1 st OFDM symbol of the downlink subframe.
11. The UE according to claim 10 , wherein, based on the carrier being in the guard-band or stand-alone mode, the NPDSCH is placed starting from 1 st OFDM symbol of the downlink subframe.
12. The UE according to claim 8 , wherein the NPDSCH is received, without skipping any part of the NPDSCH, further based on two hybrid automatic repeat request (HARQ) processes being configured.
13. The UE according to claim 8 , wherein a subcarrier spacing used for the NPDSCH is 15 kHz.
14. The UE according to claim 8 , wherein the wireless communication system includes a 3rd party partnership project (3GPP)-based wireless communication system.