[ng55QPSK]

So you have ID41323 and ID53242 over night (or at daytime) in the same location, how do you map this back to names?

It's not impossible, but you need data that exists (like house-to-name mapping) from databases outside of the reach of the operators.

And the location information in the network is only as precise as needed. Most of the time this is a cell area, so 100s of m2.