Wi-Fi 6 (IEEE 802.11ax)
Wi-Fi 6 is the Wi-Fi Alliance name for IEEE 802.11ax, a wireless LAN standard that improves efficiency in dense environments through OFDMA, multi-user MIMO and target wake time; Wi-Fi 6E extends it into the 6 GHz band.
Wi-Fi 6 operates in the 2.4 GHz and 5 GHz bands and introduces orthogonal frequency-division multiple access (OFDMA), which divides channels into resource units so that an access point can serve several devices in one transmission. Uplink and downlink multi-user MIMO, higher-order modulation, BSS colouring to reduce interference between neighbouring networks, and target wake time, which schedules when devices wake to communicate, improve capacity and battery life. Wi-Fi 6E adds the 6 GHz band where regulators permit, offering more and wider channels.
In factories and warehouses, Wi-Fi 6 connects handheld terminals, tablets, AGVs and mobile robots, cameras, machine HMIs and IIoT gateways. It uses existing Ethernet infrastructure and unlicensed spectrum, so it is widely deployed and comparatively simple to integrate, and it often coexists with private 5G, each serving different requirements.
Unlicensed spectrum means interference and contention cannot be fully controlled, so Wi-Fi is generally used for non-safety-critical communication, and industrial deployments need site surveys, roaming design, channel planning and monitoring. Metal structures and moving equipment create reflections and coverage gaps. WPA3 security, network segmentation and certificate-based authentication with IEEE 802.1X are recommended. Successors such as Wi-Fi 7 (IEEE 802.11be) add further capabilities.
Key points
- Wi-Fi Alliance name for IEEE 802.11ax
- OFDMA and multi-user MIMO serve many devices efficiently
- Target wake time reduces device power consumption
- Wi-Fi 6E extends operation into the 6 GHz band where permitted
- Use WPA3, IEEE 802.1X and segmentation, and plan for interference
Where AiVibe comes in
AiAmbA IoT is AiVibe's edge protocol layer: it discovers devices and normalises industrial signals, with supported protocols including Siemens S7, Mitsubishi MC, Delta Modbus, OPC UA and MQTT, and driver availability confirmed per installation. Writes to machines are deny-by-default.