A Dynamic Power Control Scheme Based on NetFlow for Reducing WLAN Interference

In Wireless Local-Area Networks (WLANs), most of the wireless Access Points (APs) work at the full power level. So, the conflicting channels may have a significant and inevitable impact on throughput and transmission delay when the density of the APs is increasing. This paper proposes a power control algorithm, Dynamic Power Control called DPC based on NetFlow. DPC applies a fine tuning idea to get the optimal transmission power level; Access Controller (AC) determines the value of Power Adjustment Command (PAC) through the channel state parameters, such as throughput and transmission delay, analyzed by NetFlow. Simulation results show that DPC not only achieves a relative lower consumption ratio of AP's battery but also gets the lower average delay ratio compared with the other systems.