IEEE 802.11be IEEE 802.11be, dubbed Extremely High Throughput (EHT), is the latest of the IEEE 802.11 standard, which is designated Wi-Fi 7. It has built upon 802.11ax, focusing on WLAN indoor and outdoor operation with stationary and pedestrian speeds in the 2.4, 5, and 6 GHz frequency bands. Throughput is believed to reach a theoretical maximum of 46 Gbit/s, although actual results are much lower. Development of the 802.11be amendment is ongoing, with an initial draft in March 2021, and a final version expected by the end of 2024. Despite this, numerous products were announced in 2022 based on draft standards, with retail availability in early 2023. On 8 January 2024, the Wi-Fi Alliance introduced its "Wi-Fi Certified 7" program to certify Wi-Fi 7 devices. While final ratification is not expected until the end of 2024, the technical requirements are essentially complete. The global Wi-Fi 7 market is estimated at 1 billion USD in 2023, and is projected to reach 24.2 billion USD by 2030. Core features The following are core features that have been approved as of Draft 3.0: 4096-QAM (4K-QAM) enables each symbol to carry 12 bits rather than 10 bits, resulting in 20% higher theoretical transmission rates than WiFi 6's 1024-QAM. Contiguous and non-contiguous 320/160+160 MHz and 240/160+80 MHz bandwidth AMulti-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) Theoretically as little as 1% the latency of Wi-Fi 6, through the use of MLO 16 spatial streams and Multiple Input Multiple Output (MIMO) protocol enhancements Flexible Channel Utilization - Interference currently can negate an entire Wi-Fi channel. With preamble puncturing, a portion of the channel that is affected by interference can be blocked off while continuing to use the rest of the channel. Wi-Fi generations Generation IEEE
standard Adopted Maximum link
rate (Mbit/s) Radio frequency
(GHz) Wi-Fi 7 802.11be 2024 1376-46,120 2.4, 5, 6 Wi-Fi 6E 802.11ax 2020 574-9608 6 Wi-Fi 6 802.11ax 2019 574-9608 2.4, 5 Wi-Fi 5 802.11ac 2014 433-6933 5 Wi-Fi 4 802.11n 2008 72-600 2.4, 5 (Wi-Fi 3)* 802.11g 2003 6-54 2.4 (Wi-Fi 2)* 802.11a 1999 6-54 5 (Wi-Fi 1)* 802.11b 1999 1-11 2.4 (Wi-Fi 0)* 802.11 1997 1-2 2.4 *Wi-Fi 0, 1, 2, and 3 are named by retroactive inference. They do not exist in the official nomenclature. Forrás: https://en.wikipedia.org/wiki/IEEE_802.11be/