Method for transmitting and receiving uplink signal and apparatus supporting method in wireless communication system supporting non-licensed band

A method of receiving an uplink signal, which is received by a base station from a user equipment (UE) in a wireless communication system supporting an unlicensed band, the method comprising:

• receiving an uplink data on a first time interval comprising two second time intervals,
• wherein each of the second time intervals comprises two third time intervals distinguished from each other based on a symbol in which a demodulation reference signal is transmitted, and
• wherein the uplink data is transmitted via frequency resources different from each other in the two third time intervals included in each of the second time intervals;
• and
• receiving a demodulation reference signal on the symbol in which the demodulation reference signal is transmitted in each of the second time intervals,
• wherein a frequency resource in which the demodulation reference signal is transmitted in each of the second time intervals is determined based on a frequency resource in which the uplink data is transmitted in each of the second time intervals,
• wherein the frequency resource in which the demodulation reference signal is transmitted in each of the second time intervals corresponds to a partial frequency band among a system bandwidth, and
• wherein the uplink data is transmitted in a manner of being spanned over the system bandwidth with a ratio equal to or greater than a prescribed ratio in the first time interval.

A user equipment for transmitting an uplink signal to a base station in a wireless communication system supporting an unlicensed band, the user equipment comprising:

• a transmitter;
• and
• a processor configured to operate in a manner of being connected with the transmitter, and configured to:
• transmit an uplink data on a first time interval comprising two second time intervals,
• wherein each of the second time intervals comprises two third time intervals distinguished from each other based on a symbol in which a demodulation reference signal is transmitted, and
• wherein the uplink data is transmitted via frequency resources different from each other in the two third time intervals included in each of the second time intervals;
• and
• transmit a demodulation reference signal on the symbol in which the demodulation reference signal is transmitted in each of the second time intervals,
• wherein a frequency resource in which the demodulation reference signal is transmitted in each of the second time intervals is determined based on a frequency resource in which the uplink data is transmitted in each of the second time intervals,
• wherein the frequency resource in which the demodulation reference signal is transmitted in each of the second time intervals corresponds to a partial frequency band among a system bandwidth, and
• wherein the uplink data is transmitted in a manner of being spanned over the system bandwidth with a ratio equal to or greater than a prescribed ratio in the first time interval.

A base station for receiving an uplink signal from a user equipment (UE) in a wireless communication system supporting an unlicensed band, the base station comprising:

• a receiver;
• and
• a processor configured to operate in a manner of being connected with the receiver, and configured to:
• receive an uplink data on a first time interval comprising two second time intervals,
• wherein each of the second time intervals comprises two third time intervals distinguished from each other on the basis of a symbol in which a demodulation reference signal is transmitted, and
• wherein the uplink data is transmitted via frequency resources different from each other in the two third time intervals included in each of the second time interval;
• and
• receive a demodulation reference signal on the symbol in which the demodulation reference signal is transmitted in each of the second time intervals,
• wherein a frequency resource in which the demodulation reference signal is transmitted in each of the second time intervals is determined based on a frequency resource in which the uplink data is transmitted in each of the second time intervals,
• wherein the frequency resource in which the demodulation reference signal contained is transmitted in each of the second time intervals corresponds to a partial frequency band among a system bandwidth, and
• wherein the uplink data is transmitted in a manner of being spanned over the system bandwidth with a ratio equal to or greater than a prescribed ratio in the first time interval.