HARQ feedback for dynamic and semi-persistent reception

1 . An apparatus for a user equipment (UE), the apparatus comprising:

processing circuitry configured to:

decode, from a 5 th generation NodeB (gNB), a message activating semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) receptions for time-domain duplexing (TDD) operation;

decode, from the gNB, an indication that deferring of a SPS hybrid automatic repeat request acknowledgment (HARQ-ACK) information bit is enabled;

determine that a physical uplink control channel (PUCCH) resource for a PUCCH transmission with the SPS HARQ-ACK information bit for a particular SPS PDSCH reception to be reported for a first time overlaps with a downlink resource; and

in response to a determination that the PUCCH resource overlaps with the downlink resource, defer transmission of the SPS HARQ-ACK information bit to an earliest slot after the PUCCH resource; and

a memory configured to store the SPS HARQ-ACK information bit.

2 . The apparatus of claim 1 , wherein the processing circuitry is configured to decode, from the gNB, a radio resource control (RRC) signal containing a SPS-PUCCH-AN-List information element (IE) that indicates the PUCCH resource.

3 . The apparatus of claim 1 , wherein the processing circuitry is configured to decode, from the gNB, a radio resource control (RRC) signal containing a n1PUCCH-AN information element (IE) that indicates the PUCCH resource.

4 . The apparatus of claim 1 , wherein the processing circuitry is configured to multiplex HARQ-ACK information bits, which include the SPS HARQ-ACK information bit, for transmission in another PUCCH transmission in the earliest slot after the PUCCH resource.

5 . The apparatus of claim 4 , wherein the SPS HARQ-ACK information bits correspond to SPS PDSCH configurations in which deferral is enabled.

6 . The apparatus of claim 5 , wherein for transmission of the other PUCCH transmission, the processing circuitry is configured to determine the earliest slot among slots corresponding to the SPS PDSCH configurations.

7 . The apparatus of claim 1 , wherein the processing circuitry is configured to decode, from the gNB, a radio resource control (RRC) signal containing an information element (IE) that configures a maximum payload size for the PUCCH resource.

8 . The apparatus of claim 1 , wherein the processing circuitry is configured to determine the PUCCH transmission from any PUCCH transmission indicated by n1PUCCH-AN or SPS-PUCCH-AN-r16 for a particular maximum payload size, where n1PUCCH-AN is a PUCCH resource for SPS transmission for a single SPS configuration and SPS-PUCCH-AN-r16 is a list of PUCCH resources for multiple SPS configurations.

9 . The apparatus of claim 8 , wherein the processing circuitry is configured to assume an actual number of HARQ-ACK information bits to determine PUCCH resources of the PUCCH transmission from a PUCCH resource set.

10 . The apparatus of claim 1 , wherein the processing circuitry is configured to:

determine that a plurality of PUCCH transmissions associated with different SPS PDSCH transmissions are each unable to be transmitted in a respective valid UL occasion and that a respective SPS HARQ ACK information bit for each of the SPS PDSCH transmissions is to be deferred; and

retain, after deferral, an order of the SPS HARQ ACK information bits among the SPS PDSCH transmissions prior to deferral.

11 . The apparatus of claim 1 , wherein the processing circuitry is configured to:

decode, from the gNB, a plurality of SPS PDSCH configurations indicating that deferral of SPS HARQ ACK information bits is enabled; and

for each of the SPS PDSCH configurations:

determine that a plurality of PUCCH transmissions associated with different SPS PDSCH transmissions of the SPS PDSCH configuration are each unable to be transmitted in a respective valid UL occasion and that a respective HARQ ACK information bit for each of the SPS PDSCH transmissions is to be deferred;

retain, after the deferral, an order of the SPS HARQ ACK information bits for the SPS PDSCH transmissions of the SPS PDSCH configuration prior to deferral; and

retain, after the deferral, an order of the SPS HARQ ACK information bits among the SPS PDSCH configurations prior to deferral.

12 . The apparatus of claim 1 , wherein the processing circuitry is configured to:

decode, from the gNB, a plurality of SPS PDSCH configurations indicating that deferral of SPS HARQ ACK information bits is enabled;

multiplex SPS HARQ ACK information bits of SPS PDSCH transmissions of the plurality of SPS PDSCH configurations in uplink control information (UCI); and

retain, after deferral, an order of the multiplexed SPS HARQ ACK information bits in the UCI prior to deferral.

13 . An apparatus for a 5 th generation NodeB (gNB), the apparatus comprising:

processing circuitry configured to:

encode, to a user equipment (UE), a message activating semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) receptions for time-domain duplexing (TDD) operation;

encode, for transmission to the UE, an indication that deferring of a SPS hybrid automatic repeat request acknowledgment (HARQ-ACK) information bit is enabled; and

decode, from the UE, a physical uplink control channel (PUCCH) transmission that contains the SPS HARQ-ACK information bit, the PUCCH transmission deferred from a PUCCH resource for a particular SPS PDSCH reception to be reported for a first time that overlaps with a downlink resource to an earliest slot after the PUCCH resource; and

a memory configured to store the SPS HARQ-ACK information bits.

14 . The apparatus of claim 13 , wherein the processing circuitry is configured to encode, for transmission to the UE, a radio resource control (RRC) signal containing at least one of a SPS-PUCCH-AN-List information element (IE) or n1PUCCH-AN IE that indicates the PUCCH resource.

15 . The apparatus of claim 13 , wherein the HARQ-ACK information bits include multiplexed HARQ-ACK information bits that correspond to SPS PDSCH configurations in which deferral is enabled.

16 . A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors of a user equipment (UE), the one or more processors configured to, when the instructions are executed:

decode, from a fifth generation NodeB (gNB), an indication that deferring of a SPS hybrid automatic repeat request acknowledgment (HARQ-ACK) information bit is enabled;

determine that a physical uplink control channel (PUCCH) resource for a PUCCH transmission with the SPS HARQ-ACK information bit for a particular SPS PDSCH reception to be reported for a first time overlaps with a downlink resource; and

in response to a determination that the PUCCH resource overlaps with the downlink resource, defer transmission of the SPS HARQ-ACK information bit to an earliest slot after the PUCCH resource.

17 . The non-transitory computer-readable storage medium of claim 16 , wherein the one or more processors are configured to, when the instructions are executed, decode, from the gNB, a radio resource control (RRC) signal containing at least one of a SPS-PUCCH-AN-List information element (IE) or n1PUCCH-AN IE that indicates the PUCCH resource.

18 . The non-transitory computer-readable storage medium of claim 16 , wherein the one or more processors are configured to, when the instructions are executed, multiplex HARQ-ACK information bits, which include the SPS HARQ-ACK information bit, for transmission in another PUCCH transmission in the earliest slot after the PUCCH resource.

19 . The non-transitory computer-readable storage medium of claim 18 , wherein the SPS HARQ-ACK information bits correspond to SPS PDSCH configurations in which deferral is enabled.

20 . The non-transitory computer-readable storage medium of claim 19 , wherein for transmission of the other PUCCH transmission, the one or more processors are configured to, when the instructions are executed, determine the earliest slot among slots corresponding to the SPS PDSCH configurations.