Techniques for hybrid automatic repeat request acknowledge resource indication for downlink semi-persistent scheduling

A method of wireless communications by a base station, comprising:

• transmitting, to a user equipment (UE), a message indicating activation or reactivation of semi-persistent scheduling (SPS) between the base station and the UE;
• transmitting, to the UE, an SPS message subsequent to the transmitting of the message;
• and
• receiving, from the UE, a first acknowledgement/negative-acknowledgement (ACK/NACK) to acknowledge reception of the message on a first resource and a second ACK/NACK to acknowledge reception of the SPS message on a second resource.

A user equipment (UE), comprising:

• a memory storing instructions;
• and
• one or more processors coupled with the memory and configured to:
• receive, from a base station, a message indicating activation or reactivation of semi-persistent scheduling (SPS) between the UE and the base station;
• select, based on the message, a first resource for transmitting a first acknowledgement/negative-acknowledgement (ACK/NACK) to acknowledge reception of the message;
• receive, from the base station and subsequent to the message being received, an SPS message;
• select a second resource for transmitting a second ACK/NACK to acknowledge reception of the SPS message;
• and
• transmit, to the base station, the first ACK/NACK on the first resource and the second ACK/NACK on the second resource.

A base station, comprising:

• a memory storing instructions;
• and
• one or more processors coupled with the memory and configured to:
• transmit, to a user equipment (UE), a message indicating activation or reactivation of semi-persistent scheduling (SPS) between the base station and the UE;
• transmit, to the UE, an SPS message subsequent to the message being transmitted;
• and
• receive, from the UE, a first acknowledgement/negative-acknowledgement (ACK/NACK) to acknowledge reception of the message on a first resource and a second ACK/NACK to acknowledge reception of the SPS message on a second resource.