Distance-based NACK procedures in a vehicular platoon

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

• a processor;
• memory coupled with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• receive an indication of a change in a formation of a vehicle grouping with which the UE is associated, the vehicle grouping comprising a plurality of vehicles moving as a group based at least in part on sidelink communications between members of the group;
• determine a distance-based feedback procedure to be used by the UE based at least in part on whether the UE is, as a result of the change in the formation, a primary vehicle in the vehicle grouping or a secondary vehicle that is responsive to one or more primary vehicles in the vehicle grouping;
• and
• operate in accordance with the distance-based feedback procedure.

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

• means for receiving an indication of a change in a formation of a vehicle grouping with which the UE is associated, the vehicle grouping comprising a plurality of vehicles moving as a group based at least in part on sidelink communications between members of the group;
• means for determining a distance-based feedback procedure to be used by the UE based at least in part on whether the UE is, as a result of the change in the formation, a primary vehicle in the vehicle grouping or a secondary vehicle that is responsive to one or more primary vehicles in the vehicle grouping;
• and
• means for operating in accordance with the distance-based feedback procedure.

A non-transitory computer-readable medium storing code for wireless communication at a user equipment (UE), the code comprising instructions executable by a processor to:

• receive an indication of a change in a formation of a vehicle grouping with which the UE is associated, the vehicle grouping comprising a plurality of vehicles moving as a group based at least in part on sidelink communications between members of the group;
• determine a distance-based feedback procedure to be used by the UE based at least in part on whether the UE is, as a result of the change in the formation, a primary vehicle in the vehicle grouping or a secondary vehicle that is responsive to one or more primary vehicles in the vehicle grouping;
• and
• operate in accordance with the distance-based feedback procedure.