  LoRa wireless technology is an increasingly prominent solution for massive
connectivity and the Internet of Things. Stochastic geometry and numerical
analysis of LoRa networks usually consider uniform end-device deployments. Real
deployments however will often be non-uniform, for example due to mobility.
This letter mathematically investigates how non-uniform deployments affect
network coverage and suggest optimal deployment strategies and uplink random
access transmission schemes. We find that concave deployments of LoRa
end-devices with a sub-linear spread of random access inter-transmission times
provide optimal network coverage performance.
