Control channel resources for group-feedback in multi-cast

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 a configuration message identifying a set of resources available for use by a plurality of UEs for transmission of feedback indications of multi-cast or broadcast transmission to the plurality of UEs, the set of resources comprising a plurality of subsets of resources, each subset of resources being associated with a corresponding channel metric for each UE of the plurality of UEs receiving the multi-cast or broadcast transmission;
• determine that a feedback indication is to be provided in response to the multi-cast or broadcast transmission;
• select, based at least in part on a channel metric of the UE, a first subset of the plurality of subsets of resources to use for transmitting a feedback message including the feedback indication;
• and
• transmit the feedback message for the multi-cast or broadcast transmission using resources within the selected first subset of resources.

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

• means for receiving a configuration message identifying a set of resources available for use by a plurality of UEs for transmission of feedback indications of multi-cast or broadcast transmission to the plurality of UEs, the set of resources comprising a plurality of subsets of resources, each subset of resources being associated with a corresponding channel metric for each UE of the plurality of UEs receiving the multi-cast or broadcast transmission;
• means for determining that a feedback indication is to be provided in response to the multi-cast or broadcast transmission;
• means for selecting, based at least in part on a channel metric of the UE, a first subset of the plurality of subsets of resources to use for transmitting a feedback message including the feedback indication;
• and
• means for transmitting the feedback message for the multi-cast or broadcast transmission using resources within the selected first subset of resources.

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 a configuration message identifying a set of resources available for use by a plurality of UEs for transmission of feedback indications of multi-cast or broadcast transmission to the plurality of UEs, the set of resources comprising a plurality of subsets of resources, each subset of resources being associated with a corresponding channel metric for each UE of the plurality of UEs receiving the multi-cast or broadcast transmission;
• determine that a feedback indication is to be provided in response to the multi-cast or broadcast transmission;
• select, based at least in part on a channel metric of the UE, a first subset of the plurality of subsets of resources to use for transmitting a feedback message including the feedback indication;
• and
• transmit the feedback message for the multi-cast or broadcast transmission using resources within the selected first subset of resources.