Wi-Fi 8 (802.11bn) Explained: Ultra High Reliability Wi-Fi and What It Means for Your Network

Wi-Fi 8 is the name the industry expects to use for IEEE 802.11bn, also called Ultra High Reliability (UHR). Earlier Wi-Fi generations mostly chased higher peak speeds. Wi-Fi 8 aims to make wireless performance predictable: steadier throughput, lower worst-case latency and fewer dropped connections, especially in crowded buildings and for devices on the move.

This guide explains what is in the 802.11bn draft, how Wi-Fi 8 compares with Wi-Fi 7, when to expect products, and what you can do today to make your network ready.

Why Wi-Fi needs a reliability upgrade

Wi-Fi 6 made networks more efficient, and Wi-Fi 7 pushed theoretical speeds past 40 Gbps with 320 MHz channels, 4096-QAM and Multi-Link Operation (MLO). But users rarely complain about peak speed. They complain about video calls that freeze when they walk down a corridor, warehouses where robots lose connection, and stadiums where the network collapses at half-time.

These are reliability problems. They come from interference between neighbouring access points, slow roaming and channels that are partly busy. Wi-Fi 8 targets exactly these issues.

Wi-Fi 8 performance targets

The IEEE 802.11bn project set measurable goals relative to Wi-Fi 7 under the same conditions:

• About 25% higher throughput in challenging signal conditions (lower SINR).
• About 25% lower 95th-percentile latency, which improves the worst moments rather than the average.
• About 25% fewer lost packets (MPDU loss), including while a device roams between access points.

Peak data rates stay broadly similar to Wi-Fi 7, because Wi-Fi 8 keeps 320 MHz channels and 4096-QAM. The gains are in consistency.

Key Wi-Fi 8 technologies

1. Multi-AP coordination

In today's networks, each access point mostly decides on its own when to transmit, so neighbouring APs interfere with each other. Wi-Fi 8 introduces coordination between access points:

• Coordinated Spatial Reuse (Co-SR): neighbouring APs adjust transmit power so they can transmit at the same time without destroying each other's signal.
• Coordinated Beamforming (Co-BF): APs steer their signals to avoid creating interference for clients of the neighbouring AP.
• Coordinated TDMA (Co-TDMA): APs share transmission time in an organised way rather than competing for it.

For dense environments such as offices, hospitals, campuses and venues, this is the biggest change in Wi-Fi 8.

2. Seamless roaming

Roaming between access points has always caused short interruptions. 802.11bn introduces a mobility approach in which a group of access points acts as one mobility domain, so devices move between APs without a full re-association. Voice calls, video, handheld scanners, medical carts and autonomous robots all benefit.

3. Better use of wide channels

Wide channels are powerful but fragile: if part of a 320 MHz channel is busy, older devices may back off completely. Wi-Fi 8 adds Dynamic Sub-band Operation and Non-Primary Channel Access, so devices keep using the free parts of the channel instead of waiting.

4. Smarter modulation at the edge

Finer modulation and coding steps, and unequal modulation across spatial streams, let devices hold a higher data rate at the edge of coverage instead of dropping to a much slower rate.

Wi-Fi 8 vs Wi-Fi 7 vs Wi-Fi 6

When will Wi-Fi 8 be available?

The 802.11bn task group was formed in 2023. Drafts are progressing, and final approval of the standard is expected around 2028. As with Wi-Fi 6 and Wi-Fi 7, early chipsets and "pre-standard" products may appear before final ratification, followed by Wi-Fi Alliance certification.

Navijin is developing Wi-Fi 8 access points. You can follow progress on our Wi-Fi 8 coming soon page.

Should you wait for Wi-Fi 8?

For almost every project today, no. Wi-Fi 7 is mature, supported by current phones and laptops, and a major step up from Wi-Fi 5 and Wi-Fi 6. Waiting several years leaves users on older networks in the meantime.

The smart approach is to deploy Wi-Fi 7 now on infrastructure that will also suit Wi-Fi 8.

How to prepare your network for Wi-Fi 8 today

1. Use multi-gigabit switching. Connect access points to 2.5G or faster PoE ports, for example the NJS-7224MP.
2. Install Cat6A cabling to access point locations in new buildings, so 10G is possible later.
3. Plan PoE budgets generously. High-end access points increasingly need 802.3bt (PoE++). See our PoE budget guide.
4. Standardise management. Multi-AP coordination works best in a consistently managed, controller-based estate.
5. Design for capacity, not just coverage. More APs at lower power, with good channel planning, sets you up for coordination features.

Bottom line

Wi-Fi 8 will make wireless more dependable for real-time and mobile applications. Build on Wi-Fi 7 and multi-gigabit PoE today and you will be ready to add Wi-Fi 8 when it arrives.

Wi-Fi 8 details are based on the public IEEE 802.11bn draft and may change before final ratification.