How Can AP's Channels Be Distributed to Avoid or Reduce Internal and External Interference?
Use a cellular channel distribution to avoid channel overlapping. For example, there are only three non-overlapping channels in the 2.4 GHz frequency band: channels 1, 6, and 11. A proper channel distribution can greatly reduce co-channel interference on a WLAN network. Follow these principles when distributing radio channels:
Use non-overlapping channels in adjacent areas.
Adjust APs' transmit power to avoid co-channel interference between areas.
Use a cellular channel distribution so that channels can be multiplexed without causing overlapping coverage areas.