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

A user equipment (UE) configured to perform communication in a wireless communication system, the UE comprising:

• at least one radio frequency (RF) module;
• at least one processor;
• and
• at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations comprising:
• receiving control information for scheduling a uplink data at an n-th first time unit among first time units of a first cell that each have a duration;
• determining an m-th second time unit among second time units of a second cell that each have a duration, wherein the second cell is associated with carrier indicator information of the control information, and the m-th second time unit of the second cell is determined based on timing offset information related to a timing offset delay for the UE;
• and
• based on the control information, transmitting the uplink data at the m-th second time unit of the second cell,
• wherein the m-th second time unit is determined to be the timing offset delay after a k-th second time unit which is related to receiving the control information, and
• wherein the duration of each of the first time units is larger than the duration of each of the second time units, and the k-th second time unit is an earliest one of a plurality of second time units of the second cell that overlap in time with the n-th first time unit of the first cell.

A method of performing communication by a base station (B S) in a wireless communication system, the method comprising:

• transmitting control information for scheduling a uplink data at an n-th first time unit among first time units of a first cell that each have a duration;
• determining an m-th second time unit among second time units of a second cell that each have a duration, wherein the second cell is associated with carrier indicator information of the control information, and the m-th second time unit of the second cell is determined based on timing offset information related to a timing offset delay;
• and
• based on the control information, receiving the uplink data at the m-th second time unit of the second cell,
• wherein the m-th second time unit is determined to be the timing offset delay after a k-th second time unit which is related to transmitting the control information, and
• wherein the duration of each of the first time units is larger than the duration of each of the second time units, and the k-th second time unit is an earliest one of a plurality of second time units of the second cell that overlap in time with the n-th first time unit of the first cell.

A base station (BS) configured to perform communication in a wireless communication system, the BS comprising:

• at least one radio frequency (RF) module;
• at least one processor;
• and
• at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations comprising:
• transmitting control information for scheduling a uplink data at an n-th first time unit among first time units of a first cell that each have a duration;
• determining an m-th second time unit among second time units of a second cell that each have a duration, wherein the second cell is associated with carrier indicator information of the control information, and the m-th second time unit of the second cell is determined based on timing offset information related to a timing offset delay;
• and
• based on the control information, receiving the uplink data at the m-th second time unit of the second cell,
• wherein the m-th second time unit is determined to be the timing offset delay after a k-th second time unit which is related to transmitting the control information, and
• wherein the duration of each of the first time units is larger than the duration of each of the second time units, and the k-th second time unit is an earliest one of a plurality of second time units of the second cell that overlap in time with the n-th first time unit of the first cell.

A method of performing communication by a user equipment (UE) configured with a plurality of cells in a wireless communication system, the method comprising:

• receiving, in a first time interval (TI) of a first cell, a physical downlink control channel (PDCCH) including carrier indicator information for cross-carrier scheduling;
• and
• transmitting, in a second TI of a second cell, an uplink (UL) signal related to the PDCCH including the carrier indicator information, based on TI offset information,
• wherein each TI of the first cell is configured with 14 orthogonal frequency divisional multiplexing (OFDM) symbols of the first cell, and each TI of the second cell is configured with 14 OFDM symbols of the second cell,
• wherein, based on a first subcarrier spacing (SCS) configured in the first cell being smaller than a second SCS configured in the second cell, a time length for 1 TI of the first cell is the same as a time length for multiple TIs of the second cell, and
• wherein the TI offset information denotes a TI offset value from an earliest one of multiple TIs of the second cell that overlap with the first TI of the first cell where the PDCCH is received, to the second TI where the UL signal is transmitted.