AFC WiFi refers to the use of Automated Frequency Coordination (AFC) systems to enable standard power operation of Wi-Fi 6E devices in the 6 GHz band.
Here's a breakdown:
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What is AFC? Automated Frequency Coordination is a cloud-based system designed to manage spectrum sharing in the 6 GHz band. It helps prevent interference between new Wi-Fi 6E devices and existing incumbents (e.g., fixed satellite service, broadcast auxiliary service) that already use the band. Cisco, among other companies, utilize AFC systems.
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Why is AFC needed? The 6 GHz band offers a significant expansion of available spectrum for Wi-Fi, leading to faster speeds and less congestion. However, to avoid disrupting existing users, regulatory bodies like the FCC in the United States require or recommend AFC systems for devices operating at higher power levels within the band, especially outdoors.
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How does AFC work? An AFC system uses a database of incumbent locations and operating parameters. Before a Wi-Fi 6E access point transmits at standard power, it queries the AFC system. The AFC system then determines if the access point's planned transmission would cause harmful interference to any incumbents. If not, the AFC system grants permission for the access point to transmit.
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Benefits of AFC:
- Standard Power Operation: AFC unlocks the full potential of Wi-Fi 6E by enabling standard power operation, leading to wider coverage and higher throughput, especially outdoors.
- Reduced Interference: AFC ensures that new Wi-Fi 6E devices don't interfere with existing users of the 6 GHz band.
- Wider Availability of 6 GHz Wi-Fi: AFC facilitates the deployment of Wi-Fi 6E in a wider range of environments.
In essence, AFC WiFi leverages an Automated Frequency Coordination system to allow Wi-Fi 6E access points to operate at standard power in the 6 GHz band, both indoors and outdoors, while protecting existing licensed users from interference.
