> I know it has to do with the router assigning a DHCP address, but what is
> causing it NOT to assign said address?

How do you know that? That sounds quite unlikely because the router
will only offer an address in response to a client requesting it and
it's unlikely that they all do so at the same time. If you want to kill
your theory, then assign a longer lease and I suspect you will still
suffer the same problem.

What is more likely happening is some interference that is causing all
clients to lose their RF connection, then what happens is that they re-
associate and then you see a request for an IP address which is normal.

David.