Method and device for transmitting and receiving wireless signal in wireless communication system

A user equipment (UE) configured to receive a downlink signal in a wireless communication system comprising:

• at least one processor;
• and
• at least one computer memory operatively connected to the at least one processor, and configured to store instructions such that the at least one processor performs specific operations by executing the instructions,
• wherein the specific operations include:
• receiving, from a base station (BS), a physical downlink control channel (PDCCH) based on a DFT-s-OFDM (Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplexing) symbol;
• and
• obtaining downlink control information (DCI) from the received PDCCH,
• wherein the PDCCH is mapped to one or more DFT-s-OFDM symbols,
• wherein the PDCCH is generated by applying one or more DFT operations and one inverse fast Fourier transform (IFFT) operation to a plurality of modulation symbols corresponding to each of the one or more DFT-s-OFDM symbols, and
• wherein a plurality of modulation symbols being input for at least one DFT operation among the one or more DFT operations constitutes one resource group.

A method for transmitting a downlink signal by a base station (BS) in a wireless communication system comprising:

• generating a physical downlink control channel (PDCCH) based on a DFT-s-OFDM (Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplexing) symbol;
• and
• transmitting, to a user equipment (UE), the generated PDCCH,
• wherein the PDCCH is mapped to one or more DFT-s-OFDM symbols,
• wherein the PDCCH is generated by applying one or more DFT operations and one inverse fast Fourier transform (IFFT) operation to a plurality of modulation symbols corresponding to each of the one or more DFT-s-OFDM symbols, and
• wherein a plurality of modulation symbols being input for at least one DFT operation among the one or more DFT operations constitutes one resource group.

A base station (BS) configured to transmit a downlink signal in a wireless communication system comprising:

• at least one processor;
• and
• at least one computer memory operatively connected to the at least one processor, and configured to store instructions such that the at least one processor performs specific operations by executing the instructions,
• wherein the specific operations include:
• generating a physical downlink control channel (PDCCH) based on a DFT-s-OFDM (Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplexing) symbol;
• and
• transmitting, to a user equipment (UE), the generated PDCCH,
• wherein the PDCCH is mapped to one or more DFT-s-OFDM symbols,
• wherein the PDCCH is generated by applying one or more DFT operations and one inverse fast Fourier transform (IFFT) operation to a plurality of modulation symbols corresponding to each of the one or more DFT-s-OFDM symbols, and
• wherein a plurality of modulation symbols being input for at least one DFT operation among the one or more DFT operations constitutes one resource group.