Systems and techniques for uplink transmission timing with scheduling offsets

A method for wireless communications at a user equipment (UE), comprising:

• receiving a downlink transmission in a first downlink time slot, wherein a first scheduling offset is applicable at a downlink time slot corresponding to the downlink transmission, and wherein the downlink transmission is a Physical Downlink Control Channel (PDCCH) transmission including Downlink Control Information (DCI) that schedules an uplink transmission;
• receiving a second scheduling offset, wherein the first scheduling offset and the second scheduling offset are associated with a propagation time delay of communications between the UE and a network entity, and wherein the second scheduling offset is received as an update to the first scheduling offset after the uplink transmission is scheduled by the DCI;
• selecting, from the first scheduling offset or the second scheduling offset, the first scheduling offset based on a determination that the first scheduling offset is currently active when the downlink transmission is received;
• and
• transmitting, in a second uplink time slot, the uplink transmission associated with the downlink transmission, wherein the second uplink time slot is determined based on a first uplink time slot and the selected first scheduling offset, and wherein the first uplink time slot overlaps with at least a portion of the first downlink time slot.

An apparatus for wireless communications, comprising:

• at least one memory;
• and
• at least one processor coupled to at least one memory and configured to:
• transmit a downlink transmission to a user equipment (UE) in a first downlink time slot, wherein a first scheduling offset is applicable at a downlink time slot corresponding to the downlink transmission, and wherein the downlink transmission is a Physical Downlink Control Channel (PDCCH) transmission including Downlink Control Information (DCI) that schedules an uplink transmission;
• transmit a second scheduling offset, wherein the first scheduling offset and the second scheduling offset are associated with a propagation time delay of communications between the apparatus and the UE, and wherein the second scheduling offset is transmitted as an update to the first scheduling offset after the uplink transmission is scheduled by the DCI;
• and
• receive, in a second uplink time slot based on a first uplink time slot and a selection by the UE of the first scheduling offset from the first scheduling offset or the second scheduling offset, the uplink transmission associated with the downlink transmission, wherein the selection of the first scheduling offset is based on a determination that the first scheduling offset is currently active.

A method for wireless communications at a network entity, comprising:

• transmitting a downlink transmission to a user equipment (UE) in a first downlink time slot, wherein a first scheduling offset is applicable at a downlink time slot corresponding to the downlink transmission, and wherein the downlink transmission is a Physical Downlink Control Channel (PDCCH) transmission including Downlink Control Information (DCI) that schedules an uplink transmission;
• transmitting a second scheduling offset, wherein the first scheduling offset and the second scheduling offset are associated with a propagation time delay of communications between the network entity and the UE, and wherein the second scheduling offset is transmitted as an update to the first scheduling offset after the uplink transmission is scheduled by the DCI;
• and
• receiving, in a second uplink time slot based on a first uplink time slot and a selection by the UE of the first scheduling offset from the first scheduling offset or the second scheduling offset, the uplink transmission associated with the downlink transmission, wherein the selection of the first scheduling offset is based on a determination that the first scheduling offset is currently active.