Partial Transmission to Support Extended Reality (XR) Traffic

A processor of a first device configured to perform operations comprising:

• receiving, from a second device, a medium access control (MAC) protocol data unit (PDU) comprising a plurality of MAC subPDUs, each MAC subPDU comprising at least one of a subheader, a MAC service data unit (SDU) or a MAC control element (CE);
• receiving, from the second device, an indication that the partial transmission scheme is to be used to retransmit the MAC PDU;
• and
• receiving, from the second device, a retransmission of the MAC PDU according to the partial retransmission scheme.

A processor of a first device configured to perform operations comprising:

• transmitting, to a second device, a transport block comprising a plurality of control block groups (CBGs), wherein the CBGs comprise a portion of one or more medium access control (MAC) sub Protocol Data Units (subPDUs) or MAC control element (CE);
• receiving, from the second device, feedback indicating that at least some of the CBGs of the TB were received incorrectly;
• determining that a flush criteria has been satisfied;
• and
• transmitting, to the second device, a flush command indicating that one or more of the CBGs that were received correctly should be passed to an upper layer of the second device.