Dynamic frequency selection
Wi-Fi channel allocation scheme
Dynamic frequency selection
Dynamic frequency selection (DFS) is a channel allocation scheme specified for wireless LANs, commonly known as Wi-Fi. It is designed to prevent electromagnetic interference by avoiding co-channel operation with systems that predated Wi-Fi, such as military radar, satellite communication, and weather radar, and also to provide on aggregate a near-uniform loading of the spectrum (uniform spreading). It was standardized in 2003 as part of IEEE 802.11h.
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