I am attempting to set up a network for a large, warehouse-type space (~5000 sqm) with dozens of various devices. Not wanting to run miles of cable everywhere, we bought WiFi access points that boasted ranges of over 50 metres. As an total beginner in computer networking, I neglected to consider the transmitter ranges of the devices - I have no idea what the relationship is between AP range, device range, and signal quality.
See hastily-drawn image below, where the dotted line corresponds to the maximum signal range of the respectively-coloured device.
- Device A can see AP and vice versa. All good, right?
- Device B cannot see AP and vice versa. No connectivity, right?
- Device C can see AP but the AP is out of the device's transmitter range. So what happens when the AP's signal can reach the device but not vice versa? Is any data transfer possible at this point? What's the typical range of a smartphone or laptop WiFi transmitter, anyway? If neither the AP nor the device can be moved, what's the solution here?