A Novel Frequency Channel Allocation Method for 2.4 GHz Wireless LAN

In this paper, we propose a novel frequency channel allocation method for 2.4 GHz WLAN. Because several WLAN systems are concurrently operated in the 2.4 GHz band, the interference from other systems needs to be considered. The proposed method mitigates interference both in own system and that from other WLAN systems. The method is based on a measurement result obtained with a survey tool. A technique for reducing the number of channel allocation patterns is introduced to search for adequate channel allocation, and it was confirmed that the computation time could be reduced to less than hundredth that required for the simple exhaustive search method. Both computer simulations and actual measurements demonstrate that the proposed method is effective.