Wi-Fi 8 won't improve transfer speeds — but the new standard will enhance reliability and user experience
Instead of increasing the physical data transfer rate beyond the 23 Gbps offered by Wi-Fi 7, the next-generation Wi-Fi 8—based on IEEE's 802.11bn Ultra High Reliability (UHR) specification—will focus on improving connection reliability and user experience.
Traditionally, new Wi-Fi iterations (as specified by IEEE 802.11 standards) have focused on maximizing data transfer rates by increasing channel bandwidth and number of channels and introducing new modulation methods. With Wi-Fi 7, the maximum PHY rate is 23 Gbps, though nobody expects to hit speeds that high. Also, the reliability of high-speed Wi-Fi connections leaves much to be desired. To that end, the next-generation Wi-Fi 8 iteration will not increase theoretical speed but will introduce new features designed to improve real-world performance and boost connection reliability, reports PC World, citing a MediaTek whitepaper.
On a high level, Wi-Fi 8 (802.11bn) resembles Wi-Fi 7 (802.11be): it uses 2, 4, 5, and 6GHz bands, the same modulation (4096 QAM), eight spatial streams, MU-MIMO, multiple OFDMA, and a maximum channel bandwidth of 320MHz.
However, according to the MediaTek paper, the new spec introduces several key features designed to improve real-world performance and connection speeds: Coordinated Spatial Reuse (Co-SR), Coordinated Beamforming (Co-BF), Dynamic Sub-Channel Operation (DSO), and enhanced Modulation Coding Scheme (MCS). Remember that we are talking about the standard as MediaTek sees it. Some features could be mandatory, while others could end up being optional.
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