3GPP Release 16 started the UWB location and position scope while Release 17 finalized the 5GC capability. Perhaps more work is being done there, I haven't been tracking it closely lately.

https://www.3gpp.org/technologies/location-and-positioning

Huh, is that for mesh UWB networks? I would've assumed it was for mmWave cell stations, which I've never once seen in real life.