5G NR Network Collision Avoidance I'm looking for a technical explanation or a specification that explains exactly how 5G NR collision avoidance will work. I was watching a talk from the Mobile World Conference in Shanghai two years ago (2018) and it appears that centralized transmission scheduling may be a part of the standard - here is a timestamped link to the panel member that references this:

Steve Greaves addresses 802.11ay collision avoidance

To quote: 


  If you look at what Facebook are doing with AY they are trying to get coordination &amp; synchronization across the
  whole network. Once you have that capability what you can do is you
  can manage interference. You can control the scheduling of
  transmissions such that you can deal with the dense urban deployments
  which are interference limited.


I can't find a standard or explanation for this exact thing within 5G so I was hoping someone could point me in the right direction.

Note: I am not intimately familiar with 5G and am not sure what parts of the "standard" for 5G have been defined. For a long time there was no standard at all. Also please let me know if there is a better community for this question.
IEEE 802.11 is not related to 5G NR, so consideration for WLAN networks following 802.11ay don't apply to cellular infrastructure.

I don't know what "ad-hoc" modi 5G NR brings; I don't think it's any.

So, 5G doesn't do any collision avoidance, because it's not a problem it has: it's a cellular standard that defines that the basestation / cellular infrastructure defines who sends when, where. The mobile network operators own the spectrum, so there's by definition no uncooperative users.

Generally, whereas interference mitigation is in fact a non-negligible topic for coordinated microwave networks, with these deci- to centimeter waves still taking many non-optical paths and receiver sensitivity being high enough for that to create "unwantedly far reach", you can basically ignore that for cellular mmWave applications, where you can be pretty sure that you, as the owner of the used spectrum, will have a relatively easy time making sure that your own femtocell base stations don't lead to mutual interference: The propagation is pretty much optical, so, the potential numbers of base stations a single handset might reach is pretty limited by lines of sight and a pretty small radius.