Often, a single wireless access point is not enough to provide wireless coverage at a single location. The solution is to install multiple wireless access points with the same wireless SSID and authentication.
For example, here is an office with wireless coverage from 1 wireless access point:
If we add another access point, the wireless coverage expands to...
Note that there is a some overlapping wireless coverage. The key here is to reduce overlapping WiFi coverage as much as possible.
Things to keep in mind when implementing multiple access points:
- Overlapping WiFi coverage should be reduced to the minimum level. WiFi coverage can be modified and tested by modifying and controlling the transmitting power on the access point.
- Overlapping WiFi access points must operate in different channels to avoid possible interference.
- Even though there are 11 channels available, the only channels you should use are 1, 6, and 11.
- To optimize WiFi coverage, WiFi coverage needs to be human-tested. E.g. using a laptop at different locations to connect to the same AP.
WiFi coverage planning and implementation can be very complex if you are implementing a wireless solution for a location with multiple floors. WiFi coverage is in 3D. You should always refer to the AP's manufacturer specifications and confirm the WiFi coverage through extensive and detailed testings.
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