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Subsequently in 2016, Wi-Fi Alliance introduced the Wave 2 certification, which includes additional features like MU-MIMO (downlink only), 160 MHz channel width support, support for more 5 GHz channels, and four spatial streams (with four antennas; compared to three in Wave 1 and 802.11n, and eight in IEEE's 802.11ax specification). [14]
^A In the 2.4 GHz bands bonded 40 MHz channels are uniquely named by the primary and secondary 20 MHz channels, e.g. 9+13. In the 5 GHz bands they are denoted by the center of the wider band and the primary 20 MHz channel e.g. 42[40] ^B In the US, 802.11 operation on channels 12 and 13 is allowed under low power conditions.
802.11b/g/n Wi-Fi @ 2.4 GHz [140] Playstation 4 Slim 802.11b/g/n/ac Wi-Fi @ 2.4 GHz 802.11a/b/g/n/ac Wi-Fi 2.4 GHz/5 GHz [141] 802.11a/b/g/n dual-band Wi-Fi @ 2.4 GHz and 5.0 GHz [142] 802.11a/b/g/n/ac dual-band Wi-Fi @ 2.4 GHz and 5.0 GHz [143] Wired Fast Ethernet [s] Fast Ethernet [t] Gigabit Ethernet: Gigabit Ethernet: Gigabit Ethernet ...
Using cordless phones that do not use the 2.4 GHz band. Using the 5 GHz band. DECT 6.0 (1.9 GHz), 5.8 GHz or 900 MHz phones, commonly available today, do not use the 2.4 GHz band and thus do not interfere. VoIP/Wi-Fi phones share the Wi-Fi base stations and participate in the Wi-Fi contention protocols.
Octa-core, (1 × 2.4 GHz + 3 × 2.2 GHz + 4 × 1.9 GHz Kryo 670) Adreno 642 128/256 GB 159 g 20 MP Xiaomi 11 Lite 5G NE Qualcomm Snapdragon 778G: Octa-core, (1 × 2.4 GHz + 3 × 2.2 GHz + 4 × 1.9 GHz Kryo 670) Adreno 642L MIUI 12.5 158 g Xiaomi Mi 11: Qualcomm Snapdragon 888
Multi-Link Operation (MLO), a feature that increases capacity by simultaneously sending and receiving data across different frequency bands and channels. (2.4 GHz, 5 GHz, 6 GHz) 16 spatial streams and Multiple Input Multiple Output protocol enhancements.
Wi-Fi 6, or IEEE 802.11ax, is an IEEE standard from the Wi-Fi Alliance, for wireless networks ().It operates in the 2.4 GHz and 5 GHz bands, [6] with an extended version, Wi-Fi 6E, that adds the 6 GHz band. [7]
The 2.4 GHz ISM band is fairly congested. With 802.11n, there is the option to double the bandwidth per channel to 40 MHz (fat channel) which results in slightly more than double the data rate. However, in North America, when in 2.4 GHz, enabling this option takes up to 82% of the unlicensed band.