6 GHz Wi-Fi: AFC, LPI vs Standard Power, and Why Rules Differ by Country

The 6 GHz band opened Wi-Fi to a huge amount of new spectrum, but with conditions. Power classes, coordination systems, and national rules all affect what you can deploy.

The band and who gets it

In the United States, the FCC opened 1,200 MHz from 5.925 to 7.125 GHz for unlicensed use in 2020. Other regions made different choices. The European Union and the United Kingdom opened the lower portion, roughly 5,945 to 6,425 MHz (480 MHz), and left the upper part for other uses, including debates about mobile services. Many other countries have opened all, part, or none of the band, and decisions continue to change. Always verify the current rules in your market.

For Uganda specifically, that verification means the Uganda Communications Commission (UCC): check whether 6 GHz has been opened for Wi-Fi use, under which power class, and with what indoor or outdoor conditions, before you plan a deployment.

Why it needs protection

The band is shared with existing users, including fixed microwave links and, in some segments, satellite and broadcast links. Wi-Fi must coexist without causing harmful interference. That is why power and location rules exist.

Device classes (US framework)

Other regions define comparable classes with different numbers.

Automated Frequency Coordination (AFC)

Standard-power devices must query an AFC system, which holds a database of protected incumbent links. The device reports its location and the system returns which channels and what power levels are permitted at that spot. Devices recheck regularly. AFC makes it possible to use higher power in many places while protecting incumbents.

LPI devices do not need AFC, which is why most consumer routers are LPI.

Security requirements

Operating on 6 GHz requires WPA3. Older security modes (WPA2, open without Enhanced Open) are not allowed on the band. Open networks must use Opportunistic Wireless Encryption (Enhanced Open).

How clients find 6 GHz networks

Scanning 59 channels is slow, so the standard adds discovery helpers:

• Preferred Scanning Channels (PSC): a subset of channels (every fourth 20 MHz channel in the US) where access points are encouraged to broadcast discovery information.
• Out-of-band discovery: a 5 GHz or 2.4 GHz access point from the same device advertises the 6 GHz network through Reduced Neighbor Reports.
• FILS discovery frames and unsolicited probe responses sent frequently on the 6 GHz channel.

Practical consequence: your 6 GHz network is usually found via your 5 GHz or 2.4 GHz network name, so keep those radios active.

Deployment implications for multi-country businesses

• Use hardware that supports regulatory domains per site.
• Do not assume a channel plan from one country carries to another. The EU and UK have fewer channels, so planning differs.
• Track updates. Regulators have been revisiting the upper band.
• Check outdoor rules separately, because outdoor use is more restricted.

Summary

For most homes and offices, LPI in a country where 6 GHz is open means plug-and-play benefits. For outdoor and campus work, plan for AFC and regulation.

See also Wi-Fi 6E vs Wi-Fi 7 on 6 GHz and The Future of Wi-Fi Spectrum.

Next Steps

Multi-site businesses in Uganda and East Africa need hardware and channel plans that respect each country's rules. Our Networks & Infrastructure team designs 6 GHz-ready networks with regional compliance built in.

Request a Free Site Survey to discuss a compliant 6 GHz deployment.