[Wireless] What is OFDMA? | Official Support

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Product GT-AX11000, GT-AX11000 (Call of duty 4), RT-AX3000, RT-AX56U, RT-AX58U, RT-AX88U, RT-AX89X, RT-AX92U, TUF-AX3000

[Wireless] What is OFDMA?

What is OFDMA (Orthogonal Frequency Division Multiple Access)?

OFDMA is a multi-user version of the OFDM digital-modulation technology. In Wi-Fi 6 (802.11ax), OFDMA is one of the critical feature to improve network performance.

Both OFDM and OFDMA split transmitted data into several small packets, to move small bits of information in a simple way. Furthermore, OFDMA subdivides a channel into smaller frequency allocations called subcarriers. By subdividing the channel, small packets can be parallel transmitted to multiple devices simultaneously. Arrived packets proceed to transmit and don’t have to wait for other packets. In downlink OFDMA, router can use different sub-carrier groups to send packets to different clients and latency can be managed. This flexible and decentralized method of communication increases network speed and efficiency.

The benefits of AX router with OFDMA feature:

Lower overhead and higher performance – It’s a considerable savings to combine short packets into one.

Lower latency transmission - Parallel communication is more efficient with long frames and low-rate transmission.

Improve overall QoS and makes effective utilization of bandwidth in a high-density environment.

Higher client numbers - On a packet-by-packet basis, OFDMA allows router to support more clients.

Reduce battery usage of your devices after data transmission.

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