802.11ax also known as Wi-Fi Max or Wi-Fi 6 is upon us. The new standard has many benefits which aim to improve performance, predominantly in areas of overlapping coverage, where congestion is a serious problem. The new standard will cater for the growing IoT market with efficient allocation of low data-rate connections, improved battery life of sensors and extended Wi-Fi ranges.
Improvements include but are not limited to:
- Enhanced operation in the 2.4Ghz and 5Ghz bands
- Increase data rates – Average throughput per station is increased by at least 4x
- OFDMA uplink and downlink – By dividing a transmission across a frequency dimension, with pairs of devices transmitting and receiving in sub channels known as Resource Units (RU’s), an access point can bundle several frames together in different sub channels in a single transmit opportunity offering many additional avenues for traffic management.
- Uplink Multi-User MIMO – The beamforming report has been reduced and client devices no longer need to be staggered to reduce interference, control protocols simultaneously allow Access Points to respond, making MUMIMO more efficient.
- Spatial re-use creates more simultaneous transmissions by allowing a device to transmit over the top of a distant transmission rather than being forced to wait.
- Maintain or improve power efficiency of client devices with longer sleep intervals and scheduled wake times
- Extends the Wi-Fi signal range
- Reduces the effects of interference
- Backwards compatibility with 11a/b/g/n/ac
- Indoor and outdoor network compatibility