* Use a directional antenna. A directional antenna will focus your signal in a specific direction, reducing the amount of interference from other sources.

* Increase the distance between your access points. The further apart your access points are, the less likely they are to interfere with each other.

* Use a different channel. If you are experiencing co-channel interference from another access point, try changing to a different channel.

* Reduce the transmit power of your access points. Reducing the transmit power will reduce the amount of interference your access points cause to other devices.

* Use a different frequency band. If you are using the 2.4 GHz frequency band, try switching to the 5 GHz frequency band. The 5 GHz frequency band is less crowded, so there is less chance of co-channel interference.