Executive Summary:

Australia’s Optus and Nokia have delivered one of the more credible pre 6G demonstrations yet: a live-field trial in Sydney that paired multi-gigabit speed with good coverage. The most notable result was  the 3.5 Gbps peak download rate and the indication that upper 6 GHz could support a macrocell footprint comparable to today’s 5G 3.5 GHz network. The trial suggested the upper 6GHz band can cover roughly the same footprint as Optus’ existing 5G 3.5 GHz layer—an encouraging sign for lower-cost 6G upgrades.

TABLE 1. Optus–Nokia 6G Trial: Editorial Comparison of Technical Takeaways
(Adapted from reported trial results.)

Why this trial stands out:

In early 6G discussions, spectrum, coverage, and deployment economics are inseparable. Higher-frequency bands can offer more capacity, but they often demand denser networks and new site builds; that is precisely why the Sydney result matters.ericsson+1

Optus and Nokia’s trial suggests upper 6 GHz may offer a useful compromise: enough bandwidth for high throughput, yet enough propagation performance—when paired with advanced antenna techniques—to preserve broad-area coverage on existing infrastructure.telconews.com+1

What was tested:

According to the reported trial details, the teams used 200 MHz of upper 6 GHz spectrum, divided into two 100 MHz channels between 6,890 MHz and 7,090 MHz. Nokia’s proof-of-concept AirScale massive MIMO active antenna unit used 768 antenna elements and 128 transceiver chains at an existing Optus site operating alongside a live 5G network.telconews.com+1

That setup matters because it moves the conversation beyond lab conditions. A field trial on a live site is a better indicator of how upper 6 GHz may behave in real deployments, where interference, propagation, and network integration all shape performance.telconews.com+1

The bigger 6G implication:

The strongest signal from the trial is economic, not just technical. If operators can use upper 6 GHz with existing towers and familiar radio footprints, they may be able to introduce early 6G services without rebuilding their networks from scratch.telconews.com+1

That would be a major shift in how the industry thinks about 6G rollout. Instead of requiring an entirely new layer of dense infrastructure, upper 6 GHz could become a practical evolution path from 5G to 6G, especially for operators seeking capacity gains without a full civil-engineering reset.nokia+1

Spectrum policy:

This trial also lands in the middle of a broader spectrum-policy debate. The upper 6 GHz band is widely viewed as strategically important for future mobile networks, and results like this strengthen the case for allocating at least part of the band to licensed mobile use.ericsson+1

At the same time, the band remains attractive for other services, including unlicensed use cases. The Sydney trial does not settle that debate, but it does provide real-world evidence that upper 6 GHz is not merely theoretical: it can deliver both range and capacity under conditions that resemble operational deployment.

Quotes:

Conclusions:

The Optus-Nokia result is not a commercial 6G launch, but it is a meaningful milestone. A smartphone-form-factor speed record is eye-catching; the more consequential finding is that upper 6 GHz may be deployable on today’s network footprint with far less infrastructure disruption than many expected.  That would significantly improve the business case for upper 6 GHz. If network operators can reuse existing sites and achieve coverage similar to 5G 3.5 GHz, then the transition from trial to deployment could be less capital-intensive than many expected.

For network operators, regulators, and vendors, that is the kind of evidence that can shape both deployment strategy and spectrum decisions. If upper 6 GHz continues to perform this well in additional trials, it could become one of the most important bands in the transition from 5G-Advanced to 6G.

……………………………………………………………………………………………………………………………………………………………………………………………

Frequently Asked Questions:

What is massive MIMO and why does the antenna element count matter for upper 6GHz performance?

Massive MIMO (multiple-input multiple-output) is a technology that uses a large array of antennas at a base station to serve multiple users simultaneously in the same frequency resource, using spatial beamforming to direct signal energy precisely toward each device. Higher frequencies like upper 6GHz experience greater signal loss over distance than lower 5G frequencies — so more antenna elements are needed to compensate through more precise beamforming gain. The Nokia antenna in the Optus trial packs 768 elements into a proof-of-concept unit; commercial 5G radios typically use around 192. That difference in element count is the primary reason the Optus trial reached 3.5Gbps while Vodafone’s October 2025 trial with a less advanced antenna reached 2.5Gbps using the same 200MHz bandwidth.

Will upper 6GHz 6G services actually reach consumers without new towers being built?

The Optus trial’s outdoor coverage result suggests it may be possible — but only if the antenna hardware at existing sites is upgraded. The 768-element Nokia antenna compensates for upper 6GHz’s higher path loss through beamforming, matching the coverage footprint of a 3.5GHz 5G cell. Nokia’s CTO has previously confirmed that a 768-element array at 7GHz can fit in approximately the same physical enclosure as a standard 5G unit, because the higher frequency means each element is smaller. If that holds through production hardware, operators could upgrade existing sites rather than build new ones — a critical factor in the cost and timeline of any 6G rollout.

Why does Australia’s spectrum regulator have to decide about upper 6GHz, and what are the options?

The upper 6GHz band (6,425–7,125MHz) is currently under a spectrum embargo from ACMA, meaning no new licenses can be issued while it evaluates how to use the band. The core decision is whether to allocate upper 6GHz to licensed mobile networks (enabling 6G), to unlicensed Wi-Fi (enabling Wi-Fi 6E/7 at higher outdoor power), or to some sharing framework. Mobile operators argue they need the spectrum for future 6G. The Wi-Fi industry argues the same spectrum would dramatically expand outdoor Wi-Fi capacity. There is no technical path that gives both industries full access to the same frequencies simultaneously — ACMA will need to choose, and the Optus-Nokia trial results are now part of the evidence base it will weigh.

What happens globally if countries allocate upper 6GHz differently — mobile in some, Wi-Fi in others?

This is the central risk that the GSMA and mobile standards bodies have identified since WRC-23. If a significant portion of the world’s population — particularly the US, which has already dedicated the full 6GHz band to unlicensed Wi-Fi — does not align on upper 6GHz for mobile, device manufacturers will face a fragmented market: 6G handsets designed for global use cannot rely on upper 6GHz connectivity in all markets. The result would be regional rather than global 6G ecosystems, with separate equipment lines and higher costs. Australia’s decision, while one country among many, will contribute to the critical-mass calculation for whether the WRC-23 mobile identification becomes commercially viable or remains a regulatory aspiration without a unified device ecosystem behind it.

…………………………………………………………………………………………………………………………………………………………………………………………………………

References:

https://www.optus.com.au/about/media-centre/media-releases/2026/08/optus-advances-australias-6g-future

https://www.techtimes.com/articles/323105/20260805/australias-6g-trial-clears-35gbps-upper-6ghz-using-existing-tower-sites.htm

How NTIA “Call to Action for 6G Leadership and Security” might influence 6G/IMT-2030 standards and 3GPP specifications

3GPP approves timelines for Release 21 which will specify 6G RAN, Core and 5G Advanced

IMT-2030 (“6G”) Minimum Technology Performance Requirements for Radio Interface Technologies

ITU-R M.[IMT-2030.EVAL] & ITU-R M.[IMT-2030.SUBMISSION] reports: Evaluation & Submission Guidelines for 6G RIT/SRITs (6G)

Roles of 3GPP and ITU-R WP 5D in the IMT 2030/6G standards process

Dell’Oro: 6G RAN Capex to reach $500 billion by 2034 + Counterpoint

ABI Research: 6G Radio Installed Base by Region from 2029 to 2034

Analysis: Cohere’s $28M U.S. DoD FutureG ISAC contract; OTFS vs OFDM; 6G-NR/IMT 2030 RIT standards outlook

Analysis: Ericsson’s leading role in French INTENTION 6G project

Analysis: Nvidia’s rumored new 6G AI-RAN – likely features/functions and industry impact

Analysis: Nokia’s new AI-RAN platform and Standalone AI-RAN node with Nvidia GPUs

Ericsson and Intel collaborate to accelerate AI-Native 6G; other AI-Native 6G advancements at MWC 2026

NVIDIA and global telecom leaders to build 6G on open and secure AI-native platforms + Linux Foundation launches OCUDU

Nokia and Rohde & Schwarz collaborate on AI-powered 6G receiver years before IMT 2030 RIT submissions to ITU-R WP5D

AI wireless and fiber optic network technologies; IMT 2030 “native AI” concept

Comparing AI Native mode in 6G (IMT 2030) vs AI Overlay/Add-On status in 5G (IMT 2020)

SKT 6G ATHENA White Paper: a mid-to-long term network evolution strategy for the AI era

Verizon’s 6G Innovation Forum joins a crowded list of 6G efforts that may conflict with 3GPP and ITU-R IMT-2030 work

Highlights of 3GPP Stage 1 Workshop on IMT 2030 (6G) Use Cases

Ericsson and e& (UAE) sign MoU for 6G collaboration vs ITU-R IMT-2030 framework