6 GHz has quietly won the laptop, and lost the meeting room

The argument against designing for 6 GHz used to be simple: not enough clients could use it. In an estate on a three-year laptop refresh, that argument has largely expired. Most business laptops shipping now carry a 6 GHz-capable radio, and the phone estate is following.

What has not changed is the building.

The failure mode we keep seeing

An organisation refreshes to Wi-Fi 6E, keeps the existing access point positions on the basis that coverage was previously fine, and then spends the following quarter handling complaints from perimeter meeting rooms that worked last year.

The physics is not subtle. Indoor Low Power operation caps transmit power below what 5 GHz is permitted, and material attenuation rises with frequency — significantly through concrete, brick and the low-emissivity glass that modern meeting pods are made of. The result is a cell roughly 20 to 30 percent smaller in area from the same access point.

A 5 GHz design with 15 percent overlap and no margin loses the overlap first, then the coverage.

What is actually blocking deployments

In the deployments we see, the ranked blockers are now:

1. Access point count. A 6 GHz-primary design typically needs 15 to 25 percent more access points than the 5 GHz design it replaces.
2. Switching and power. Tri-radio access points want 802.3bt and a multi-gigabit uplink. That is a switching project, not a Wi-Fi project.
3. Client discovery. 6 GHz service that clients cannot find, because Reduced Neighbor Reports are missing or the BSS is not on a Preferred Scanning Channel.
4. Client support. Now fourth, and falling.

The survey question

The single change that prevents most of this is surveying at the band you intend to rely on. A -67 dBm target measured at 5 GHz and extrapolated to 6 GHz is not a 6 GHz design, it is a hope.