In the context of Wi-Fi, what does DFS stand for?

Dynamic Frequency Selection (DFS) is a key feature in Wi-Fi technology that allows devices to automatically choose the best channel for operation based on interference levels and other conditions. This is particularly important in the 5 GHz frequency band, where Wi-Fi devices may operate alongside radar systems, including weather radar. DFS helps minimize interference by requiring Wi-Fi devices to switch channels when they detect that a radar signal is present.

The primary intent of DFS is to enable Wi-Fi devices to share the spectrum with other services while ensuring that radar operations are not disrupted, which is crucial for maintaining communication reliability in various environments. Implementing DFS allows for more efficient use of available channels, leading to improved performance and reduced congestion for Wi-Fi networks.