Techniques for feedback deferral with feedback retransmission and carrier switching

1 . An apparatus for wireless communication at a user equipment (UE), comprising:

a processor; and

a memory coupled with the processor, wherein the memory comprises instructions executable by the processor to cause the apparatus to:

monitor a first slot for a semi-persistent scheduled transmission associated with a target slot for feedback information for the semi-persistent scheduled transmission;

receive the semi-persistent scheduled transmission in the first slot;

initiate a first timer based at least in part on receiving the semi-persistent scheduled transmission;

initiate a second timer in response to initiating the first timer;

monitor for a control message during a first time period based at least in part on a scheduling conflict between uplink transmission of the feedback information and a downlink reception at the target slot, wherein monitoring the control message is based at least in part on initiating the second timer;

select a second slot subsequent to the first slot for transmission of the feedback information for the semi-persistent scheduled transmission based at least in part on at least one of monitoring for the control message during the first time period or an availability of uplink resources during a second time period at least partially overlapping with the first time period, wherein the first timer is configured to expire upon termination of the second time period; and

perform a communication procedure with a network device according to the selection.

2 . The apparatus of claim 1 , wherein the instructions to perform the communication procedure are further executable by the processor to cause the apparatus to:

transmit, to the network device, the feedback information comprising at least feedback for the semi-persistent scheduled transmission on the second slot according to the selection.

3 . The apparatus of claim 1 , wherein the instructions are further executable by the processor to cause the apparatus to:

receive, during the first time period and after initiating the second timer, the control message requesting one or more feedback bits, wherein selecting the second slot is based at least in part on the control message.

4 . The apparatus of claim 3 , wherein the instructions are further executable by the processor to cause the apparatus to:

transmit, to the network device, one or more requested feedback bits on the second slot in accordance with the selecting.

5 . An apparatus for wireless communication at a network device, comprising:

a processor; and

a memory coupled with the processor, wherein the memory comprises instructions executable by the processor to cause the apparatus to:

transmit, to a user equipment (UE) and during a first slot, a semi-persistent scheduled transmission associated with a target slot for feedback information for the semi-persistent scheduled transmission;

configure the UE to initiate a first timer based at least in part on transmitting the semi-persistent scheduled transmission;

configure the UE to initiate a second timer in response to initiating the first timer;

transmit, to the UE, a control message during a first time period based at least in part on a scheduling conflict between uplink transmission of the feedback information and a downlink reception at the target slot, wherein transmitting the control message is based at least in part on initiating the second timer; and

receive, from the UE, the feedback information for the semi-persistent scheduled transmission on a second slot subsequent to the first slot for transmission, wherein the second slot is selected based at least in part on at least one of transmitting the control message during the first time period or an availability of uplink resources during a second time period at least partially overlapping with the first time period, wherein the first timer is configured to expire upon termination of the second time period.

6 . A method for wireless communication at a user equipment (UE), comprising:

monitoring a first slot for a semi-persistent scheduled transmission associated with a target slot for feedback information for the semi-persistent scheduled transmission;

receiving the semi-persistent scheduled transmission in the first slot;

initiating a first timer based at least in part on receiving the semi-persistent scheduled transmission;

initiating a second timer in response to initiating the first timer;

monitoring for a control message during a first time period based at least in part on a scheduling conflict between uplink transmission of the feedback information and a downlink reception at the target slot, wherein monitoring the control message is based at least in part on initiating the second timer;

selecting a second slot subsequent to the first slot for transmission of the feedback information for the semi-persistent scheduled transmission based at least in part on at least one of monitoring for the control message during the first time period or an availability of uplink resources during a second time period at least partially overlapping with the first time period, wherein the first timer is configured to expire upon termination of the second time period; and

performing a communication procedure with a network device according to the selection.

7 . The method of claim 6 , wherein performing the communication procedure further comprises:

transmitting, to the network device, the feedback information comprising at least feedback for the semi-persistent scheduled transmission on the second slot according to the selection.

8 . The method of claim 6 , further comprising:

receiving, during the first time period and after initiating the second timer, the control message requesting one or more feedback bits, wherein selecting the second slot is based at least in part on the control message.

9 . The method of claim 8 , further comprising:

transmitting, to the network device, one or more requested feedback bits on the second slot in accordance with the selecting.

10 . The method of claim 6 , wherein the second timer is configured to expire upon termination of the first time period.

11 . The method of claim 6 , further comprising:

determining that the control message is not received during the first time period.

12 . The method of claim 6 , further comprising:

determining a termination of the second time period; and

dropping the feedback information for the semi-persistent scheduled transmission based at least in part on determining the termination of the second time period.

13 . The method of claim 6 , further comprising:

identifying, during the target slot, the scheduling conflict between uplink transmission of the feedback information and the downlink reception; and

deferring transmission of the feedback information to the second slot based at least in part on identifying the scheduling conflict, wherein selecting the second slot is based at least in part on deferring the transmission.

14 . The method of claim 6 , further comprising:

determining that carrier switching is enabled at the UE, wherein selecting the second slot comprises selecting the second slot in accordance with an availability of uplink resources on a plurality of serving cells during the target slot.

15 . The method of claim 6 , further comprising:

identifying a maximum deferral value associated with the feedback information for the semi-persistent scheduled transmission, wherein the second time period is based at least in part on the maximum deferral value.

16 . The method of claim 6 , wherein the control message comprises a control message for a feedback codebook or a control message for one-shot feedback retransmission or a control message for feedback codebook retransmission or a control message for switching an uplink control channel carrier.

17 . A method for wireless communication at a network device, comprising:

transmitting, to a user equipment (UE) and during a first slot, a semi-persistent scheduled transmission associated with a target slot for feedback information for the semi-persistent scheduled transmission;

configuring the UE to initiate a first timer based at least in part on transmitting the semi-persistent scheduled transmission;

configuring the UE to initiate a second timer in response to initiating the first timer;

transmitting, to the UE, a control message during a first time period based at least in part on a scheduling conflict between uplink transmission of the feedback information and a downlink reception at the target slot, wherein transmitting the control message is based at least in part on initiating the second timer; and

receiving, from the UE, the feedback information for the semi-persistent scheduled transmission on a second slot subsequent to the first slot for transmission, wherein the second slot is selected based at least in part on at least one of transmitting the control message during the first time period or an availability of uplink resources during a second time period at least partially overlapping with the first time period, wherein the first timer is configured to expire upon termination of the second time period.

18 . The method of claim 17 , wherein transmitting the control message further comprises:

transmitting, during the first time period and after initiating the second timer, the control message requesting one or more feedback bits, wherein the second slot is selected based at least in part on the control message.

19 . The method of claim 18 , further comprising:

receiving, from the UE, one or more requested feedback bits on the second slot in accordance with the selecting.

20 . The method of claim 17 , wherein the second timer is configured to expire upon termination of the first time period.

21 . The method of claim 17 , further comprising:

identifying, during the target slot, the scheduling conflict between uplink transmission of the feedback information and the downlink reception; and

configuring the UE to defer transmission of the feedback information to the second slot based at least in part on identifying the scheduling conflict, wherein the second slot is selected based at least in part on deferring the transmission.

22 . The method of claim 17 , further comprising:

determining that carrier switching is enabled at the UE, wherein the second slot is selected in accordance with an availability of uplink resources on a plurality of serving cells during the target slot.

23 . The method of claim 17 , further comprising:

identifying a maximum deferral value associated with the feedback information for the semi-persistent scheduled transmission, wherein the second time period is based at least in part on the maximum deferral value.

24 . The method of claim 17 , wherein the control message comprises a control message for a feedback codebook or a control message for one-shot feedback retransmission or a control message for feedback codebook retransmission or a control message for switching an uplink control channel carrier.