Method for receiving PUSCH in wireless communication system and apparatus therefor

A base station for receiving a Physical Uplink Shared Channel (PUSCH) in a wireless communication system, the base station comprising:

• one or more transceivers;
• one or more processors;
• and
• one or more memories operably connectable to the one or more processors, and storing instructions of performing operations based on being executed by the one or more processors,
• wherein the operations comprise:
• transmitting a first message including information related to a configuration of a the PUSCH,
• transmitting a second message which is related to a spatial relation RS applied to a transmission of the PUSCH, and
• receiving the PUSCH which is transmitted with a beam determined based on the spatial relation RS,
• wherein the PUSCH is configured to be received repeatedly across a plurality of time units
• wherein the plurality of time units are based on a plurality of slot groups,
• wherein the second message includes information for at least one spatial relation RS applied to each of the plurality of slot groups,.
• wherein the at least one spatial relation RS is based on at least one SRS Resource Indicator (SRI),
• wherein the beam includes a plurality of beams determined for the plurality of slot groups, and
• wherein the second message further includes information for at least one Transmission Precoding Matrix Indicator (TPMI) applied to each of the plurality of slot groups.

An apparatus comprising:

• one or more memories;
• and
• one or more processors functionally connected to the one or more memories,
• wherein the one or more processors are configured to control the apparatus to:
• transmit a first message including information related to a configuration of a the PUSCH,
• transmit a second message which is related to a spatial relation RS applied to a transmission of the PUSCH, and
• receive the PUSCH which is transmitted with a beam determined based on the spatial relation RS,
• wherein the PUSCH is configured to be received repeatedly across a plurality of time units
• wherein the plurality of time units are based on a plurality of slot groups,
• wherein the second message includes information for at least one spatial relation RS applied to each of the plurality of slot groups,
• wherein the at least one spatial relation RS is based on at least one SRS Resource Indicator (SRI),
• wherein the beam includes a plurality of beams determined for the plurality of slot groups, and
• wherein the second message further includes information for at least one Transmission Precoding Matrix Indicator (TPMI) applied to each of the plurality of slot groups.