Prioritized discovery for high spectral efficiency nr sidelink

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

• receiving, from a network entity, an indication of a proximity discovery resource in a physical sidelink feedback channel (PSFCH) symbol;
• broadcasting a proximity discovery request comprising the indication of the proximity discovery resource;
• receiving, from one or more other UEs, a PSFCH sequence associated with the proximity discovery resource;
• and
• transmitting, to the network entity, a bit map sequence associated with the one or more other UEs.

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

• receiving, from a second UE, a proximity discovery request comprising an indication of a proximity discovery resource in a physical sidelink feedback channel (PSFCH) symbol;
• receiving a sidelink control information (SCI) comprising the proximity discovery request, wherein the SCI further comprises at least one of:
• an identification (ID) or a reference signal received power (RSRP) threshold, wherein the PSFCH sequence is transmitted to the second UE if the SCI was transmitted by the second UE using a valid sidelink radio network temporary identifier (SL-RNTI).
• transmitting, to the second UE, a PSFCH sequence associated with the proximity discovery resource, wherein the PSFCH sequence indicates an index of the first UE in the proximity discovery resource;
• obtaining a set via a system information block (SIB) or a radio resource control (RRC);
• and
• wherein the SL-RNTI is valid when the ID is within the set.

An apparatus for wireless communication, 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, from a network entity, an indication of a proximity discovery resource in a physical sidelink feedback channel (PSFCH) symbol;
• broadcast a proximity discovery request comprising the indication of the proximity discovery resource;
• receive, from one or more other UEs, a PSFCH sequence associated with the proximity discovery resource;
• and
• transmit, to the network entity, a bit map sequence associated with the one or more other UEs