That mobile mast map combined with the RF simulation highlights the solution to some extent. You can see how the mobile infrastructure has been placed to solve problems caused by Oldham’s topography (if you squint a bit). There’s four main spines radiating out from the Town Centre roughly following the A62, Ashton Road, Lees Road and Chaddy Way (with some fill-in for shaded area like the east of Oldham Edge and Springhead).
Admittedly the mobile masts will have taken into account vehicle traffic more than we would have to, but I think this does give us a decent guideline.
Just out of interest, what’s LoRaWAN like for deadzones around transceivers?