Timelines and conditions for transmission of acknowledgment information
Methods and apparatuses for providing hybrid automatic repeat request acknowledgement (HARQ-ACK) information. A method includes receiving a first physical downlink control channel (PDCCH) that schedules a transmission of a physical uplink shared channel (PUSCH) in a slot and receiving PDCCHs that schedule receptions of first multicast physical downlink shared channels (PDSCHs), respectively. A first number of the PDCCHs is not received after the first PDCCH, and a second number of the PDCCHs is received after the first PDCCH. The method further includes determining that transmission of a PUCCH to provide the HARQ-ACK information associated with receptions of multicast PDSCHs, that include the first multicast PDSCHs, would overlap in time with the PUSCH transmission in the slot and transmitting the PUSCH. The PUSCH includes first HARQ-ACK information associated with the first number of PDCCHs and does not include second HARQ-ACK information associated with the second number of PDCCHs.
1. A method for providing hybrid automatic repeat request acknowledgement (HARQ-ACK) information, the method comprising:
receiving:
a first physical downlink control channel (PDCCH) that schedules a transmission of a physical uplink shared channel (PUSCH) in a slot, and
PDCCHs that schedule receptions of first multicast physical downlink shared channels (PDSCHs), respectively, wherein:
a first number of the PDCCHs is not received after the first PDCCH, and
a second number of the PDCCHs is received after the first PDCCH;
determining that a transmission of a physical uplink control channel (PUCCH) to provide the HARQ-ACK information associated with receptions of multicast PDSCHs, that include the first multicast PDSCHs, would overlap in time with the PUSCH transmission in the slot; and
transmitting the PUSCH, wherein:
the PUSCH includes first HARQ-ACK information associated with the first number of PDCCHs, and
the PUSCH does not include second HARQ-ACK information associated with the second number of PDCCHs.
2. The method of claim 1 , wherein the second number of PDCCHs is received later than a PUSCH processing time prior to the PUSCH transmission.
3. The method of claim 1 , wherein the second HARQ-ACK information is not included in a second PUCCH transmission or in a second PUSCH transmission in a second slot after the slot.
4. The method of claim 1 , wherein there are no receptions of second PDCCHs, after the first PDCCH reception, that schedule receptions of unicast PDSCHs, respectively, when unicast HARQ-ACK information associated with the receptions of the unicast PDSCHs is to be provided by the PUCCH in the slot.
5. The method of claim 1 , wherein:
the first PDCCH reception provides a downlink control information (DCI) format that includes a field indicating whether the HARQ-ACK information is to be provided by the PUSCH or the PUCCH, and
the field indicates that the HARQ-ACK information is to be provided by the PUSCH.
6. The method of claim 1 , wherein:
the multicast PDSCH receptions include an initial semi-persistently scheduled (SPS) PDSCH reception and a non-initial SPS PDSCH reception after activation of multicast SPS PDSCH receptions,
the HARQ-ACK information for the initial multicast SPS PDSCH reception, from the multicast SPS PDSCH receptions, is reported according to a first reporting mode, and
the HARQ-ACK information for the non-initial multicast SPS PDSCH reception, from the multicast SPS PDSCH receptions, is reported according to a second reporting mode.
7. The method of claim 6 , further comprising:
receiving information indicating whether to use the first or second reporting mode for reporting the HARQ-ACK information for the non-initial multicast SPS PDSCH reception,
wherein the information indicates to use the second reporting mode.
8. A user equipment (UE) comprising:
a transceiver configured to receive:
a first physical downlink control channel (PDCCH) that schedules a transmission of a physical uplink shared channel (PUSCH) transmission in a slot, and
PDCCHs that schedule receptions of first multicast physical downlink shared channels (PDSCHs), respectively, wherein:
a first number of the PDCCHs is not received after the first PDCCH, and
a second number of the PDCCHs is received after the first PDCCH;
a processor operably coupled to the transceiver, the processor configured to determine that a transmission of a physical uplink control channel (PUCCH) to provide hybrid automatic repeat request acknowledgement (HARQ-ACK) information associated with receptions of multicast PDSCHs, that include the first multicast PDSCHs, would overlap in time with the PUSCH transmission in the slot,
wherein the transceiver is further configured to transmit the PUSCH and wherein:
the PUSCH includes first HARQ-ACK information associated with the first number of PDCCHs, and
the PUSCH does not include second HARQ-ACK information associated with the second number of PDCCHs.
9. The UE of claim 8 , wherein the second number of PDCCHs is received later than a PUSCH processing time prior to the PUSCH transmission.
10. The UE of claim 8 , wherein the second HARQ-ACK information is not included in a second PUCCH transmission or in a second PUSCH transmission in a second slot after the slot.
11. The UE of claim 8 , wherein there are no receptions of second PDCCHs, after the first PDCCH reception, that schedule receptions of unicast PDSCHs, respectively, when unicast HARQ-ACK information associated with the receptions of the unicast PDSCHs is to be provided by the PUCCH in the slot.
12. The UE of claim 8 , wherein:
the first PDCCH reception provides a downlink control information (DCI) format that includes a field indicating whether the HARQ-ACK information is to be provided by the PUSCH or the PUCCH, and
the field indicates that the HARQ-ACK information is to be provided by the PUSCH.
13. The UE of claim 8 , wherein:
the multicast PDSCH receptions include an initial semi-persistently scheduled (SPS) PDSCH reception and a non-initial SPS PDSCH reception after activation of multicast SPS PDSCH receptions,
the HARQ-ACK information for the initial multicast SPS PDSCH reception, from the multicast SPS PDSCH receptions, is reported according to a first reporting mode, and
the HARQ-ACK information for the non-initial multicast SPS PDSCH reception, from the multicast SPS PDSCH receptions, is reported according to a second reporting mode.
14. The UE of claim 13 , wherein:
the transceiver is further configured to receive information indicating whether to use the first or second reporting mode for reporting the HARQ-ACK information for the non-initial multicast SPS PDSCH reception, and
the information indicates to use the second reporting mode.
15. A base station comprising:
a transceiver configured to transmit:
a first physical downlink control channel (PDCCH) that schedules a reception of a physical uplink shared channel (PUSCH) in a slot, and
PDCCHs that schedule transmissions of multicast physical downlink shared channels (PDSCHs), respectively, wherein:
a first number of the PDCCHs is not transmitted after the first PDCCH, and
a second number of the PDCCHs is transmitted after the first PDCCH;
a processor operably coupled to the transceiver, the processor configured to determine that a reception of a physical uplink control channel (PUCCH) to provide hybrid automatic repeat request acknowledgement (HARQ-ACK) information associated with transmissions of multicast PDSCHs, that include the first multicast PDSCHs, would overlap in time with the PUSCH reception in the slot,
wherein the transceiver is further configured to receive the PUSCH and wherein:
the PUSCH includes first HARQ-ACK information associated with the first number of PDCCHs, and
the PUSCH does not include second HARQ-ACK information associated with the second number of PDCCHs.
16. The base station of claim 15 , wherein the second number of PDCCHs is received later than a PUSCH processing time prior to the PUSCH reception.
17. The base station of claim 15 , wherein the second HARQ-ACK information is not included in a second PUCCH reception or in a second PUSCH reception in a second slot after the slot.
18. The base station of claim 15 , wherein there are no transmissions of second PDCCHs, after the first PDCCH transmission, that schedule transmissions of unicast PDSCHs, respectively, when unicast HARQ-ACK information associated with the transmissions of the unicast PDSCHs is to be provided by the PUCCH in the slot.
19. The base station of claim 15 , wherein:
the first PDCCH transmission provides a downlink control information (DCI) format that includes a field indicating whether the HARQ-ACK information is to be provided by the PUSCH or the PUCCH, and
the field indicates that the HARQ-ACK information is to be provided by the PUSCH.
20. The base station of claim 15 , wherein:
the multicast PDSCH transmissions include an initial semi-persistently scheduled (SPS) PDSCH transmission and a non-initial SPS PDSCH transmission after activation of multicast SPS PDSCH transmissions,
the HARQ-ACK information for the initial multicast SPS PDSCH transmission, from the multicast SPS PDSCH transmissions, is reported according to a first reporting mode, and
the HARQ-ACK information for the non-initial multicast SPS PDSCH transmission, from the multicast SPS PDSCH transmissions, is reported according to a second reporting mode.