We're developing a product that communicates over wifi and LTE. I'm putting together a test plan for determining that these work, but also what sort of conditions we can expect them to work in.
The aim of the tests is to validate the hardware design (enclosure, antenna choice, etc), and to provide recommendations for the end-user about installation location.
I can make some headway in terms of how to test wifi e.g. set up a WAP transmitting at a known signal strength, and vary the distance to the WAP, or add or remove obstacles or interference, and measure performance and signal on both the WAP and the device. But even that might be subject to external interference at random points unless I find a Faraday cage. Any further suggestions on how to test this?
And for LTE (Cat-M1) connectivity - I don't really know where to start here. I can read the RSSI for the modem, but seeing as the transmitter is out of our control it seems a much harder task. Any pointers for how to test, or where to look for info?