Group common-physical downlink control channel (GC-PDCCH) for triggering feedback for multimedia broadcast multicast service (MBMS) group common-physical data shared channels (GC-PDSCHs)

An apparatus for wireless communications at a user equipment (UE), comprising:

• one or more memory components storing code;
• and
• one or more processor components operable to, when executing the code, cause the apparatus to:
• receive, from a network device on a granting group common (GC)-physical downlink control channel (PDCCH), a multimedia broadcast multicast service (MBMS) downlink grant that schedules an MBMS transmission for a group of UEs that includes the UE;
• receive, from a network device, a search space parameter that configures a search space associated with a triggering GC-PDCCH, a length associated with the triggering GC-PDCCH, a radio network temporary identifier (RNTI) associated with the triggering GC-PDCCH, and one or more feedback bit fields associated with the triggering GC-PDCCH;
• receive, from a network device, on the triggering GC-PDCCH in association with monitoring the search space, the one or more feedback bit fields indicating respective feedback resources for each UE of the group of UEs;
• and
• transmit, to a network device via the respective feedback resources for the UE, a feedback report associated with the MBMS transmission.

A method for wireless communication performed by a network device, comprising:

• transmitting, to a plurality of user equipment (UEs) via a granting group common (GC)-physical downlink control channel (PDCCH), a multimedia broadcast multicast service (MBMS) downlink grant that schedules an MBMS transmission for the plurality of UEs;
• transmitting a search space parameter that configures a search space associated with a triggering GC-PDCCH, a length associated with the triggering GC-PDCCH, a radio network temporary identifier (RNTI) associated with the triggering GC-PDCCH, and one or more feedback bit fields associated with the triggering GC-PDCCH;
• transmitting, to each UE of the plurality of UEs via the triggering GC-PDCCH, the one or more feedback bit fields indicating respective feedback resources for each UE of the group of UEs;
• transmitting, to the plurality of UEs, the MBMS transmissions;
• and
• receiving, from each of one or more UEs of the plurality of UEs via the respective feedback resources, a respective feedback report associated with the MBMS transmission.

An apparatus for wireless communications at a network device, comprising:

• one or more memory components storing code;
• and
• one or more processor components operable to, when executing the code, cause the apparatus to:
• transmit, to a plurality of user equipment (UEs) via a granting group common (GC)-physical downlink control channel (PDCCH), a multimedia broadcast multicast service (MBMS) downlink grant that schedules an MBMS transmission for the plurality of UEs;
• transmit a search space parameter that configures a search space associated with a triggering GC-PDCCH, a length associated with the triggering GC-PDCCH, a radio network temporary identifier (RNTI) associated with the triggering GC-PDCCH, and one or more feedback bit fields associated with the triggering GC-PDCCH;
• transmit, to each UE of the plurality of UEs via the triggering GC-PDCCH, the one or more feedback bit fields indicating respective feedback resources for each UE of the group of UEs;
• transmit, to the plurality of UEs, the MBMS transmission;
• and
• receive, from each of one or more UEs of the plurality of UEs via the respective feedback resources, a respective feedback report associated with the MBMS transmission.