WLAN分布式同频干扰避免新方法

A New Distributed Interference Avoidance Algorithm for WLAN

文中针对WLAN中普遍存在的干扰问题及现有WLAN干扰监测和避免方法的不足,提出了分布式动态干扰检测和避免新方法,该方法无须中心集中控制器的干预,各被干扰的AP只需根据自身所处的环境合理地选择切换信道,将干扰的影响局限在一个很小的范围。特别适用于AP密集,严重干扰的情况。并通过实例验证了该方法的正确性。

In this paper, a new method is proposed for effective interference avoidance in a WLAN via distributed, dynamic frequency selection. Each AP evaluates the wireless channel conditions independently and switches channel by using a distributed coordination process among neighboring APs. Such coordination could avoid the channel flapping problem and stabilizes the distributed channel selection. This proposed method is completely distributed and without any centralized control. Intensive experiment results have proved the effectiveness of the proposed method.