Network coding in radio link control layer for multicast/broadcast transmissions

A base station for wireless communication, comprising:

• a memory;
• and
• one or more processors, coupled to the memory, configured to:
• transmit configuration information indicating that network coding is enabled for initial transmissions associated with a multicast/broadcast service (MBS) and indicating that network coding is enabled for retransmissions associated with the MBS;
• transmit, via a multicast traffic channel or a dedicated traffic channel, an initial transmission associated with the MBS, wherein the initial transmission includes a first set of encoded packets;
• receive a radio link control (RLC) status feedback message associated with the initial transmission;
• and
• transmit, via the multicast traffic channel or the dedicated traffic channel, a retransmission associated with the initial transmission, wherein the retransmission includes a second set of encoded packets.

A method of wireless communication performed by a user equipment (UE), comprising:

• receiving, from a base station, configuration information indicating that network coding is enabled for initial transmissions associated with a multicast/broadcast service (MBS) and indicating that network coding is enabled for retransmissions associated with the MBS;
• receiving, via a multicast traffic channel or a dedicated traffic channel, an initial transmission associated with the MBS, wherein the initial transmission is associated with a first set of encoded packets;
• transmitting, based at least in part on decoding the initial transmission, a radio link control (RLC) status feedback message associated with the initial transmission;
• and
• receiving, via the multicast traffic channel or the dedicated traffic channel, a retransmission associated with the initial transmission, wherein the retransmission is associated with a second set of encoded packets.

A method of wireless communication performed by a base station, comprising:

• transmitting configuration information indicating that network coding is enabled for initial transmissions associated with a multicast/broadcast service (MBS) and indicating that network coding is enabled for retransmissions associated with the MBS;
• transmitting, via a multicast traffic channel or a dedicated traffic channel, an initial transmission associated with the MBS, wherein the initial transmission includes a first set of encoded packets;
• receiving a radio link control (RLC) status feedback message associated with the initial transmission;
• and
• transmitting, via the multicast traffic channel or the dedicated traffic channel, a retransmission associated with the initial transmission, wherein the retransmission includes a second set of encoded packets.