Autonomous Dynamic Frequency Selection for WLANs Operating in the TV White Space

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This paper describes the challenges of frequency channel selection for WLANs operating in the TV White Space (TVWS) and proposes a Dynamic Frequency Selection (DFS) technique as the solution. Based on the statistics gained from past usage experience of channels, of the TVWS channels' vacancies and channel occupation by the adjacent WLANs, each WLAN evaluates and prioritize the channels independently using a priority function. Then by selecting the channel of the highest priority among vacant channels, each WLAN quickly finds a channel with low interference and whose vacancy is adaptive to its traffic load distribution as well.