Joint broadcast and unicast design for multiple-input multiple-output systems

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

• a processor,
• memory coupled with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• determine configuration information for communication of a plurality of data blocks in a plurality of respective durations, the configuration information comprising a plurality of portions of each of the respective durations comprising a first portion for communication of a first encoded transmission via broadcast, a second portion for reporting assistance information for the first encoded transmission, a third portion for communication of an additional encoded transmission via unicast or multicast, or a combination thereof;
• transmit, to a first user equipment (UE) and a second UE, the configuration information for communication of the plurality of data blocks;
• transmit, in the first portion of a first duration via a broadcast message associated with a first data block, the first encoded transmission for the first data block, the first encoded transmission being encoded based at least in part on a rateless code;
• and
• receive, from the first UE and the second UE during the second portion of the first duration indicated in the configuration information for reporting assistance information for the first encoded transmission, respective assistance information based at least in part on the first and second UEs attempting decoding processes for the first encoded transmission.

A method for wireless communications at a user equipment (UE), comprising:

• receiving, from a network entity, configuration information for communication of a plurality of data blocks in a plurality of respective durations;
• determining, based at least in part on the configuration information, a plurality of portions of each of the respective durations comprising a first portion for communication of a first encoded transmission via broadcast, a second portion for reporting assistance information for the first encoded transmission, a third portion for communication of an additional encoded transmission via unicast or multicast, or a combination thereof;
• receiving, from the network entity via a broadcast message in the first portion of a first duration of the plurality of respective durations, the first encoded transmission for a respective data block of the plurality of data blocks, wherein the first encoded transmission is based at least in part on a rateless code;
• performing a decoding process on the first encoded transmission;
• and
• transmitting, to the network entity, assistance information during the second portion of the first duration indicated in the configuration information for reporting assistance information for the first encoded transmission based at least in part on performing the decoding process.

A method for wireless communications at a network entity, comprising:

• determining configuration information for communication of a plurality of data blocks in a plurality of respective durations, the configuration information comprising a plurality of portions of each of the respective durations comprising a first portion for communication of a first encoded transmission via broadcast, a second portion for reporting assistance information for the first encoded transmission, a third portion for communication of an additional encoded transmission via unicast or multicast, or a combination thereof;
• transmitting, to a first user equipment (UE) and a second UE, the configuration information for communication of the plurality of data blocks;
• transmitting, in the first portion of a first duration via a broadcast message associated with a first data block, the first encoded transmission for the first data block, the first encoded transmission being encoded based at least in part on a rateless code;
• and
• receiving, from the first UE and the second UE during the second portion of the first duration indicated in the configuration information for reporting assistance information for the first encoded transmission, respective assistance information based at least in part on the first and second UEs attempting decoding processes for the first encoded transmission.