Semi-persistent scheduling for broadcast or multicast communication

An apparatus for wireless communication by a user equipment (UE), comprising:

• a memory;
• and
• at least one processor coupled to the memory and configured to:
• receive, from a base station, semi-persistent scheduling (SPS) configuration information for multicast indicating a set of resources configured for feedback, each transmit (TX) beam of a set of TX beams of the base station corresponding to a respective subset of the set of resources;
• receive SPS signaling from the base station via one or more TX beams of the set of TX beams over each of a set of SPS occasions;
• and
• transmit feedback to the base station on one or more subsets of the set of resources respectively corresponding to the one or more TX beams based on the SPS signaling, the feedback indicating one of acknowledgement (ACK) or non-acknowledgement (NACK).

An apparatus for wireless communication by a user equipment (UE), comprising:

• a memory;
• and
• at least one processor coupled to the memory and configured to:
• determine whether at least one of downlink data on a downlink data channel over at least one multicast semi-persistent scheduling (SPS) occasion or multicast downlink control information (DCI) indicating an SPS activation or release for a multicast group is unsuccessfully received from a base station;
• and
• receive a retransmission of at least one of the downlink data or the SPS activation or release for the multicast group when the at least one of the downlink data or the multicast DCI is determined to be unsuccessfully received.

An apparatus for wireless communication by a user equipment (UE), comprising:

• means for receiving, from a base station, semi-persistent scheduling (SPS) configuration information for multicast indicating a set of resources configured for feedback, each transmit (TX) beam of a set of TX beams of the base station corresponding to a respective subset of the set of resources;
• means for receiving SPS signaling from the base station via one or more TX beams of the set of TX beams over each of a set of SPS occasions;
• and
• means for transmitting feedback to the base station on one or more subsets of the set of resources respectively corresponding to the one or more TX beams based on the SPS signaling, the feedback indicating one of acknowledgement (ACK) or non-acknowledgement (NACK).

An apparatus for wireless communication by a base station, comprising:

• a memory;
• and
• at least one processor coupled to the memory and configured to:
• configure a set of resources to carry feedback, each transmit (TX) beam of a set of TX beams corresponding to a respective subset of the set of resources;
• transmit configuration information indicating the set of resources to a set of user equipment (UE), the configuration information being associated with semi-persistent scheduling (SPS) for multicast;
• transmit SPS signaling to the set of UE via the set of TX beams over each of a set of SPS occasions;
• and
• receive feedback from the set of UE on one or more subsets of the set of resources based on the SPS signaling, the feedback indicating one of acknowledgement (ACK) or non-acknowledgement (NACK) associated with the SPS signaling.

An apparatus for wireless communication by a base station, comprising:

• a memory;
• and
• at least one processor coupled to the memory and configured to:
• transmit downlink data to a set of user equipment (UE) configured with semi-persistent scheduling (SPS) on a downlink data channel over a set of multicast SPS occasions;
• determine whether to retransmit at least one of the downlink data or a multicast SPS activation or release indicated by multicast downlink control information (DCI);
• and
• retransmit the at least one of the downlink data or the multicast SPS activation or release when the at least one of the downlink data or the multicast SPS activation or release is determined to be retransmitted.