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Wi-Fi 8 trades speed for reliability

by on14 November 2024


Available in 2028

The next generation of wireless technology, Wi-Fi 8, also known as IEEE 802.11bn Ultra High Reliability, will emphasise reliability over speed.

Wi-Fi 8, which should be out in 2028, is being touted as focusing on optimising interactions between devices and access points. This shift aims to improve network efficiency, reducing interference and congestion for a more reliable and adaptive connection.

According to PCWorld, Wi-Fi 8 will closely resemble Wi-Fi 7. The maximum physical layer (PHY) rate will remain at 23Gbits/s, using the same four frequency bands (2, 4, 5, and 6GHz) and 4096 QAM modulation across a maximum channel bandwidth of 320MHz.

However, real-world throughput is expected to be around 80 per cent of the theoretical maximum, with actual performance varying.

Wi-Fi 8 will retain the same wireless bandwidth as Wi-Fi 7, using identical channels and modulation. It will also be backwards compatible with previous standards.

MediaTek said the major innovation lies in how Wi-Fi 8 will enhance device interactions with multiple access points. This advancement represents an evolution from the single-channel communications of earlier Wi-Fi iterations, which initially involved one laptop and a router.

Over the years, Wi-Fi technology has progressed significantly. Wi-Fi 6 introduced a dedicated 6GHz channel, sometimes used as a "backhaul" between access points. Mesh networks have become more common, providing devices with multiple access points, channels, and frequencies, enhancing connectivity and performance.

MediaTek said that Wi-Fi 8 promises to deliver a more seamless and efficient wireless experience, and a significant milestone in the ongoing evolution of wireless connectivity.

Last modified on 14 November 2024
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