Wi-Fi 6E/7 (6 GHz) Guide: MLO, 320 MHz Channels & Deployment

Core Technical Specifications

center Freq 5.925–7.125 GHz

modulation OFDMA / 4096-QAM

data Encoding 1024-QAM (6E), 4096-QAM (Wi-Fi 7)

operating Range 10–30 m indoor

antenna Tri-band antenna arrays

tx Power Standard Power (with AFC) or Low Power Indoor

bandwidth 20 / 40 / 80 / 160 / 320 MHz (Wi-Fi 7)

channel Spacing 20 MHz base, up to 59 channels (US)

Real-World Devices & Applications

High-Performance

Latest-gen tri-band routers (ASUS, Netgear, TP-Link)
AR/VR headsets (Meta Quest, Apple Vision Pro)
High-end laptops and smartphones with 6E/7 adapters
4K/8K streaming and gaming

Reference Circuits & Schematics

Wi-Fi 6E/7 Access Point Architecture

Tri-band radios: 2.4 + 5 + 6 GHz. The 6 GHz radio operates with zero legacy congestion.

Pin	Description
`6 GHz Radio`	Dedicated 6 GHz radio chain
`5 GHz Radio`	Legacy 5 GHz support
`2.4 GHz Radio`	Legacy/IoT support

Circuit Walk-Through

6 GHz provides 1200 MHz of clean spectrum (US) with no legacy devices. Wi-Fi 7 adds MLO (Multi-Link Operation) for simultaneous multi-band use. 320 MHz channels provide up to 46 Gbps theoretical PHY rate. WPA3 is mandatory.

Signal Structure & Waveform Analysis

6 GHz Channel Plan

20/40/80/160/320 MHz channels, no DFS required in most regions.

UNII-5

5.925–6.425 GHz

Channels 1–93

UNII-6

6.425–6.525 GHz

Channels 97–109

UNII-7

6.525–6.875 GHz

Channels 113–177

UNII-8

6.875–7.125 GHz

Channels 181–233

Timing Notes: WPA3 mandatory. No WPA2 fallback on 6 GHz. Standard Power requires AFC to avoid incumbent interference. LPI mode doesn’t need AFC.

Analysis & Capture Tips

All 6 GHz clients must support WPA3-SAE
Check AFC registration for Standard Power operation
Monitor 320 MHz channel utilisation for interference

Bench Troubleshooting & Repair Guide

1. WPA3 Only

Client device specs / AP security settings

6 GHz networks require WPA3. WPA2 clients cannot see 6 GHz SSIDs. Verify all clients support WPA3-SAE before deploying 6 GHz-only networks.

2. Limited Range

Wi-Fi heatmap

6 GHz has even shorter range than 5 GHz. Plan for higher AP density. Use MLO (Wi-Fi 7) for seamless failover to 5/2.4 GHz.

3. AFC Compliance

AP admin console / AFC database

Standard Power mode requires AFC registration. LPI mode limited to indoor with lower power. Check regulatory requirements for your region.

Wi-Fi 6E / 7