Which enhancement was introduced with Wi‑Fi 6?

Uplink and Downlink Orthogonal Frequency Division Multiple Access (OFDMA) is a key enhancement introduced with Wi-Fi 6 (802.11ax). OFDMA allows multiple users to transmit or receive data simultaneously on different sub-carriers within the same channel, significantly improving efficiency and reducing latency, especially in high-density environments. Channel bonding was introduced in earlier Wi-Fi standards (802.11n and 802.11ac) to combine multiple channels for higher throughput. Wi-Fi Protected Access 3 (WPA3) is a security standard, not a core Wi-Fi 6 physical layer enhancement, though it was released around the same time. While Wi-Fi 6 does support higher-order modulation, 4096-QAM is a feature of Wi-Fi 6E and Wi-Fi 7, not the original Wi-Fi 6 standard, which uses 1024-QAM.