OFDMA (Orthogonal Frequency Division Multiple Access)is one of the core features introduced inIEEE 802.11ax (Wi-Fi 6). It divides a channel into smaller subcarriers calledResource Units (RUs), allowing an AP to communicate with multiple clients simultaneously, both on uplink and downlink.
According to theRUCKUS One Online Help – Wi-Fi 6 Features Overview, OFDMA improves spectrum efficiency, reduces latency, and increases throughput in high-density environments. RUCKUS APs such as theR750andR850use OFDMA in coordination withRUCKUS AI’s client traffic analysisto allocate resources dynamically.
In contrast,MU-MIMOalso supports multi-user communication but only in one direction (downlink for 802.11ac Wave 2, both for 11ax).QAM256enhances modulation efficiency but doesn’t enable concurrent multi-client service.
[References:, RUCKUS One Online Help – Wi-Fi 6 and OFDMA Operations, RUCKUS Analytics 3.5 User Guide – PHY Layer Metrics and Multi-user Efficiency, RUCKUS AI Documentation – Resource Unit Allocation and Client Scheduling, ]
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