It is a function to prevent managed APs from overloading. When the system detects the occurrence of APs' associated-client numbers exceeding a predefined threshold at circumstances and other APs in the same group are still below the threshold, the balancing function will be activated to decrease the overloading APs' transmit power and increase other available APs' transmit power; this would increase chances for other available APs to be associated. The system can divide the managed APs into groups; define the group threshold, and a time interval which will trigger the AP load balancing.