Data transmission method for ultra low-latency, highly-reliable communication in wireless communication system, and device therefor

A method of transmitting data in a wireless communication system, the method comprising steps of:

• receiving information on a repeated transmission number of physical uplink shared channel (PUSCH) regarding uplink data from a base station;
• configuring a plurality of PUSCHs corresponding to the repeated transmission number of the PUSCH, wherein the uplink data is identically mapped to the plurality of PUSCHs;
• and
• sequentially transmitting the plurality of PUSCHs within one slot,
• wherein the plurality of PUSCHs include a first PUSCH and a second PUSCH,
• wherein the one slot includes a first mini-slot and a second mini-slot each of which consists of at least one orthogonal frequency division multiplexing (OFDM) symbol,
• wherein the first PUSCH is transmitted in the first mini-slot and the second PUSCH is transmitted in the second mini-slot,
• wherein frequency hopping is applied to each transmission of the first PUSCH transmission and the second PUSCH transmission,
• wherein the repeated transmission of the PUSCH includes a case where the repeated transmission of the PUSCH is performed based on an uplink grant and a case where the repeated transmission of the PUSCH is performed without the uplink grant, and
• wherein a signaling which indicates a format regarding the repeated transmission of the PUSCH is different according to whether the uplink grant is present or not.