METHOD OF PERFORMING FEEDBACK TRANSMISSION FOR MULTICAST OR BROADCAST SERVICE AND RELATED DEVICE
A method of performing a feedback transmission for a multicast or broadcast service (MBS) for a user equipment (UE) is provided. The method includes receiving, from a base station (BS), a RRC message enabling the UE to provide HARQ ACK information for a PDSCH reception corresponding to the MBS; receiving, from the BS, a first DCI format that schedules a first PDSCH for receiving MBS data, the first DCI format being a DCI format with CRC scrambled by a G-RNTI; determining a PUCCH resource according to the first DCI format; transmitting, to the BS, first HARQ ACK information corresponding to the first PDSCH on the PUCCH resource; and receiving, from the BS, a second PDSCH providing a retransmission of the MBS data, the second PDSCH being scheduled by a second DCI format using the G-RNTI or a C-RNTI.
1 - 16 . (canceled)
17 . A method of performing a feedback transmission for a multicast or broadcast service (MBS) for a user equipment (UE), the method comprising:
receiving, from a base station (BS), a radio resource control (RRC) message enabling the UE to provide Hybrid Automatic Repeat Request (HARQ) Acknowledgment (ACK) information for a physical downlink shared channel (PDSCH) reception corresponding to the MBS;
receiving, from the BS, a first downlink control information (DCI) format that schedules a first PDSCH for receiving MBS data, the first DCI format being a DCI format with Cyclic Redundancy Check (CRC) scrambled by a Group-Radio Network Temporary Identifier (G-RNTI);
determining a physical uplink control channel (PUCCH) resource according to the first DCI format;
transmitting, to the BS, first HARQ ACK information corresponding to the first PDSCH on the PUCCH resource; and
receiving, from the BS, a second PDSCH providing a retransmission of the MBS data, the second PDSCH being scheduled by a second DCI format using the G-RNTI or a Cell-Radio Network Temporary Identifier (C-RNTI).
18 . The method of claim 17 , wherein the first HARQ ACK information includes an Acknowledgment (ACK) value or a Negative-acknowledgment (NACK) value that indicates a decoding status of the MBS data.
19 . The method of claim 17 , wherein in a case that the second PDSCH is scheduled by the second DCI format using the C-RNTI, the second PDSCH is transmitted by the BS via a unicast transmission.
20 . A user equipment (UE) for performing a feedback transmission for a multicast or broadcast service (MBS), the UE comprising:
at least one processor; and
at least one memory coupled to the at least one processor, the at least one memory storing computer-executable instructions that, when executed by the at least one processor, cause the UE to:
receive, from a base station (BS), a radio resource control (RRC) message enabling the UE to provide Hybrid Automatic Repeat Request (HARQ) Acknowledgment (ACK) information for a physical downlink shared channel (PDSCH) reception corresponding to the MBS;
receive, from the BS, a first downlink control information (DCI) format that schedules a first PDSCH for receiving MBS data, the first DCI format being a DCI format with Cyclic Redundancy Check (CRC) scrambled by a Group-Radio Network Temporary Identifier (G-RNTI);
determine a physical uplink control channel (PUCCH) resource according to the first DCI format;
transmit, to the BS, first HARQ ACK information corresponding to the first PDSCH on the PUCCH resource; and
receive, from the BS, a second PDSCH providing a retransmission of the MBS data, the second PDSCH being scheduled by a second DCI format using the G-RNTI or a Cell-Radio Network Temporary Identifier (C-RNTI).
21 . The UE of claim 20 , wherein the first HARQ ACK information includes an Acknowledgment (ACK) value or a Negative-acknowledgment (NACK) value that indicates a decoding status of the MBS data.
22 . The UE of claim 20 , wherein in a case that the second PDSCH is scheduled by the second DCI format using the C-RNTI, the second PDSCH is transmitted by the BS via a unicast transmission.
23 . A base station (BS) for performing a feedback transmission for a multicast or broadcast service (MBS), the BS comprising:
at least one processor; and
at least one memory coupled to the at least one processor, the at least one memory storing computer-executable instructions that, when executed by the at least one processor, cause the BS to:
transmit, to a user equipment (UE), a radio resource control (RRC) message enabling the UE to provide Hybrid Automatic Repeat Request (HARQ) Acknowledgment (ACK) information for a physical downlink shared channel (PDSCH) reception corresponding to the MBS;
transmit, to the UE, a first downlink control information (DCI) format that schedules a first PDSCH for transmitting MBS data, the first DCI format being a DCI format with Cyclic Redundancy Check (CRC) scrambled by a Group-Radio Network Temporary Identifier (G-RNTI);
receive, from the UE, first HARQ ACK information corresponding to the first PDSCH on a physical uplink control channel (PUCCH) resource; and
transmit, to the UE, a second PDSCH providing a retransmission of the MBS data, the second PDSCH being scheduled by a second DCI format using the G-RNTI or a Cell-Radio Network Temporary Identifier (C-RNTI).
24 . The BS of claim 23 , wherein the first HARQ ACK information includes an Acknowledgment (ACK) value or a Negative-acknowledgment (NACK) value that indicates a decoding status of the MBS data.
25 . The BS of claim 23 , wherein in a case that the second PDSCH is scheduled by the second DCI format using the C-RNTI, the second PDSCH is transmitted by the BS via a unicast transmission.