A 6G Standard Would Be Evolutionary, and the Industry Cannot Agree on What to Evolve From

Stephane Teral, founder and chief analyst at Teral Research, told the RCR Wireless 6G Forum 2026 that 6G standardization is moving toward evaluation and consensus building, and that there is global consensus 6G should be evolutionary, building on 5G, with no clean-slate reset. He then listed the three areas where that consensus breaks down: spectrum, migration paths from 5G to 6G, and the role of AI in the core network. His most direct warning was that the disagreements are unfolding amid a contest for technological leadership, with implications beyond telecommunications, and that competing national and industry priorities could make agreement on a common standard more difficult.

The technical continuity Teral cited is specific. Orthogonal frequency-division multiplexing, used in 4G and 5G, remains central to the direction of 6G, and he said 5G channel-coding schemes will also be reused. The argument for continuity is that it preserves a global device ecosystem and supports affordability. On spectrum, he identified the 4 GHz and 6 GHz bands as areas of debate, while saying there was agreement around 7 GHz, and he called for harmonizing spectrum approaches across the United States and Canada. The World Radiocommunication Conference in 2027 is the next milestone in the spectrum discussion.

The 3GPP migration argument is where evolutionary becomes contested. Teral said participants had not agreed on which migration pathways should be permitted for the transition from 5G to 6G, including whether to authorize additional overlay and dual-connectivity configurations. That is not a detail: if the migration path is undecided, operators cannot plan an investment cycle, and vendors cannot commit a product roadmap. The next stage of the 3GPP discussions is scheduled for December, and Teral pointed to WRC-27 as the second milestone.

On the AI architecture question, Teral outlined three approaches being discussed in the industry: a separate AI domain, AI incorporated into 6G network functions, and AI agents integrated into networks. He has argued that a dedicated 6G core would not be necessary, and that existing 5G network functions could be sufficient. That position puts him at odds with vendors pursuing a dedicated AI-native core, including Huawei, which used NetworkX 2026 in Vienna the day before Teral spoke to lay out its own AI-Native Core architecture for agentic services. The split between a dedicated 6G core and an evolved 5G core is one of the structural disagreements that will shape Release 21 and beyond.

Teral’s most pointed challenge was on the business case. He said he sees many use cases for 6G sensing applications, including weather analysis for agriculture, but questioned who will pay for them. The assumption that use cases automatically translate into viable business models is, in his view, untested. He distinguished AI used within existing telecom networks for optimization, which he said has been happening for more than a decade, from the development of 6G itself, and he noted that Chinese service providers appear to be making progress in selling tokens while Western operators are still searching for the equivalent revenue hook.

The geopolitical framing Teral used is unusual for an analyst briefing. He said 6G leadership is a proxy for future economic and military superiority, and he cited patent-application data that in his presentation showed China ahead of the United States. He then questioned how much a fragmented standard would change consumer device choices, particularly in the U.S., where he said Chinese devices are not going to arrive anytime soon. The remark cuts both ways: it acknowledges that a fragmented standard may not visibly hurt U.S. consumers in the short term, and it concedes that the fragmentation risk is real at the infrastructure and patent level even if the consumer device market is already bifurcated.

Supplier’s note: We supply 5G RAN equipment and optical transport platforms from Huawei, ZTE, Ericsson, Nokia and Cisco, and the 6G standards uncertainty Teral described has a direct bearing on how we advise customers to plan their 2027 and 2028 rebuilds. For operators in markets where Huawei and ZTE are the incumbent RAN vendors, the evolutionary continuity Teral cited, with OFDM and 5G channel coding carried forward, means the installed base is not a stranded asset under any of the migration pathways currently under discussion at 3GPP, and we are quoting 5G-Advanced upgrades with a clear handoff to whatever 6G migration path is eventually approved. For customers in markets where the U.S. bifurcation Teral referenced is binding, we are holding Ericsson and Nokia 5G-Advanced baseband and radio inventory as the bridge, and we are not yet quoting any pre-standard 6G hardware regardless of vendor because the December 3GPP milestone and WRC-27 will determine which spectrum bands and which core architecture actually ship. Lead times on 5G-Advanced basebands are running 12 to 16 weeks across all four major vendors, and the pre-standard 6G trial gear Verizon and Ericsson demonstrated in the 7 GHz band in Concord, California, is not available at distribution level and will not be until the FCC completes the lower 7 GHz study the NTIA is due to finish by December. We stock cross-vendor compatible optical modules and DWDM line cards that serve either a dedicated 6G core or an evolved 5G core, so customers do not have to bet on the architecture argument Teral outlined before committing to the optical layer.