Wi-Fi load balancing using cognitive radio techniques

The current growth of IEEE 802.11 WLAN brings the need to apply intelligent load balancing techniques in order to optimize the overall network performance. Recent studies on WLAN have shown that access points (AP) load is often uneven. To avoid this situation, several load balancing scheme have been proposed. In this paper, we proposed a new AP-driven load balancing scheme which utilizes the capabilities of cognitive radio (CR) techniques based on cell breathing. The CR incorporates fuzzy controller to decide on the transmission power level. Adjusting of transmission power enables the AP to dynamically modify its cell boundaries in order to balance the AP load.