I have designed a 5 point low power wireless network using 868 MHz modules and want to test the wireless connection performance indoor. The points are going to be fixed to the wall and placed above each other with each one located in a separate floor (so there are 5 floors). My questions are:
The parameters that I care about are speed, signal strength and error rate. How do professional companies evaluate the performance of such a wireless network? How do they find the maximum limitations of a wireless network? Are there any other important parameters?
Each PCB has a horizontal antenna and for the time being I have the PCBs without boxes so I can't mount the PCBs to the wall. I am thinking about just laying the PCBs on the ground. I don't like the fact that the antennas are going to be close and parallel to the ground to get the test done. Is this an acceptable close enough approach? What would professional companies do to test the wireless PCBs before manufacturing the boxes? Would they settle for doing the tests on a bench?
Thank you in advance.