6G Standardization: Complete Timeline from Research to Deployment

2026 is the year 6G stops being a research topic and starts becoming a standard. The work that will define the next generation of wireless — its capabilities, its architecture, its air interface — is now underway inside 3GPP and ITU. This article, prepared by the 7G Network editorial team with expertise in wireless standards and telecommunications policy, maps the complete timeline from where we are today to the first commercial 6G networks.

The Two Tracks: ITU and 3GPP

6G standardization is governed by two bodies: ITU-R sets the vision and performance requirements through the IMT-2030 framework, while 3GPP writes the normative technical specifications in Release 20 (study) and Release 21 (specifications).

6G standardization runs on two parallel tracks that converge at specific milestones:

ITU-R (International Telecommunication Union) defines the vision. Through its Working Party 5D, ITU sets the framework called IMT-2030 — the performance requirements, usage scenarios, and evaluation criteria that any candidate 6G technology must satisfy. ITU does not write the technical specifications. It sets the exam that 3GPP must pass.

3GPP (3rd Generation Partnership Project) writes the specifications. The actual protocols, air interfaces, and architecture that become "6G" will be codified in 3GPP releases — specifically Release 20 (study phase) and Release 21 (normative specifications). 3GPP then submits its technology to ITU for evaluation against the IMT-2030 requirements.

This two-body structure has governed every generation since 3G. IMT-2000 defined 3G. IMT-Advanced defined 4G. IMT-2020 defined 5G. IMT-2030 defines 6G. For more on how 6G differs from 7G architecturally, see our 6G vs 7G comparison.

The Complete Timeline

According to ITU-R, the IMT-2030 framework defines six usage scenarios for 6G including immersive communication, integrated sensing and communication, and AI-native networking, with commercial deployment expected between 2030 and 2032.

2023–2024: Vision and Requirements

ITU-R published the IMT-2030 Framework Recommendation in November 2023, outlining six usage scenarios for 6G: immersive communication, hyper-reliable and low-latency communication, massive communication, ubiquitous connectivity, AI and communication, and integrated sensing and communication. This document set the goalposts.

Simultaneously, 3GPP began early study items in Release 19 (5G Advanced), exploring technologies that would feed into 6G — AI/ML for the air interface, ambient IoT, and non-terrestrial network enhancements.

2025–2026: Study Phase (Release 20)

Release 20 is the 6G study release. It contains no normative 6G specifications — instead, it produces the Technical Reports that define what 6G will look like. The key study item is TR 38.914: Study on 6G Scenarios and Requirements, which was approximately 60% complete as of March 2026.

This phase answers fundamental questions: What spectrum will 6G use? What are the minimum performance targets? What architecture — centralized, distributed, or cloud-native? What role does AI play in the air interface?

A critical decision comes in June 2026, when 3GPP's Technical Specification Groups will decide the duration of the Release 21 work item — effectively setting the date for the first complete 6G specifications.

2026–2028: Specification Development (Release 21)

Release 21 is where 6G becomes real. This release will contain the first normative 6G technical specifications — the actual protocols that equipment manufacturers will implement. Ericsson has stated that 6G specifications should be ready by end of 2028.

Release 21 will define:

• The 6G New Radio (NR) air interface, including sub-THz spectrum support
• AI-native RAN architecture and interfaces
• Integrated sensing and communication (ISAC) protocols
• Enhanced non-terrestrial network integration
• New security framework incorporating post-quantum cryptography

2028–2029: ITU Evaluation

The target date for technology proposals for IMT-2030 is early 2029. 3GPP will submit its Release 21 specifications to ITU-R Working Party 5D for evaluation against the IMT-2030 requirements.

From 2024 through end of 2026, ITU is defining the technical performance requirements and evaluation methodologies. These include targets for peak data rate (expected: 200 Gbps to 1 Tbps), user experienced data rate (target: 1–10 Gbps), latency (target: 0.1 ms), and connection density (target: 100 million devices per km²).

ITU's final decision to designate 3GPP's technology as IMT-2030 is estimated by 2030.

2029–2030: Pre-Commercial Trials

Leading operators will begin pre-commercial 6G deployments during this window. South Korea has publicly stated its intention to launch commercial 6G by 2028–2029, which would require pre-standard equipment — a strategy similar to how early 5G launched on pre-Release 15 specifications.

Japan (NTT IOWN), China (IMT-2030 Promotion Group), and the EU (Hexa-X program) all target this same window for large-scale trials.

2030–2032: Commercial Launch

The mainstream 6G commercial launch window is 2030–2032. This follows the pattern of every previous generation:

• 3G standard finalized 1999, commercial launch 2001–2003
• 4G LTE standard finalized 2008, commercial launch 2009–2012
• 5G standard finalized 2018, commercial launch 2019–2021
• 6G standard targeted 2028, commercial launch 2030–2032

Initial 6G coverage will be urban and concentrated — flagship cities and dense business districts, exactly as 5G launched. Rural and nationwide coverage follows over 3–5 years.

What Release 20 Studies Are Revealing

3GPP Release 20 study items are converging on a 6G spectrum strategy combining sub-7 GHz for coverage, 7–24 GHz as a new mid-band, and sub-THz above 92 GHz for extreme short-range capacity.

The 3GPP study items in Release 20 are shaping several critical 6G design decisions:

Spectrum strategy: 6G will use a combination of sub-7 GHz (for coverage), 7–24 GHz (a new "mid-band" for capacity and coverage balance), and sub-THz above 92 GHz (for extreme capacity in short range). The 7–24 GHz range is emerging as the most important new band — it offers a balance of coverage and capacity that mmWave failed to deliver for 5G.

AI integration: The study items are converging on a model where AI is used for channel estimation, beam management, and resource allocation — but with classical algorithms as fallback. Full AI-native air interfaces remain a Release 22+ aspiration.

Architecture: A cloud-native, disaggregated RAN is the baseline assumption, according to the O-RAN Alliance (2025). The question is how far disaggregation goes — whether the RAN intelligent controller (RIC) from O-RAN Alliance becomes part of the 3GPP standard, or whether 3GPP defines its own framework. Our article on AI-native RAN architecture explores this in depth.

Key Risks to the Timeline

Major risks to the 6G timeline include standards politics within 3GPP, spectrum allocation delays at WRC-27, economic pressure from unrecovered 5G investments, and potential geopolitical fragmentation of the standard.

Standards politics: 3GPP operates by consensus among hundreds of member companies. If major players disagree on fundamental architecture choices — as happened with the 5G Non-Standalone vs Standalone debate — the timeline slips. The June 2026 Release 21 scoping decision is the first major consensus test.

Spectrum allocation: The World Radiocommunication Conference 2027 (WRC-27) will make critical decisions about 6G spectrum, particularly in the 7–24 GHz and sub-THz bands. If key spectrum is not allocated, parts of the 6G vision become impossible.

Economic pressure: Telecom operators have not yet fully monetized their 5G investments, according to GSMA Intelligence (2025). Appetite for another capital-intensive generational transition is low. If the business case for 6G is not compelling, operators may delay deployment even after specifications are ready. The lessons from 5G deployment are instructive here.

Geopolitical fragmentation: Increasing US-China tech tensions risk splitting the 6G standard into competing regional variants — exactly what ITU's IMT framework is designed to prevent, but political forces may override technical coordination.

What This Means for the Industry

According to Ericsson, 6G specifications should be completed by end of 2028, with equipment vendors Nokia, Ericsson, Samsung, and Huawei already investing in R&D to secure competitive positions for the first normative standard.

For equipment vendors (Nokia, Ericsson, Samsung, Huawei): the specification window is 2026–2028. R&D investments made now determine competitive position. The June 2026 3GPP decision is the starting gun.

For operators: spectrum strategy decisions in 2026–2027 will lock in or lock out 6G capabilities for a decade. Participation in Release 20 study items is not optional if you want to influence the standard.

For investors: the 6G investment cycle mirrors 5G — infrastructure companies benefit 2–3 years before commercial launch (2027–2029), while application-layer companies benefit 2–3 years after (2032–2035). The current window is for component and IP plays, not consumer services.

For researchers: any technology not reflected in Release 20 study items by end of 2026 is unlikely to appear in the first 6G standard. The window for new contributions is closing.

Sources

1. ITU-R, "Framework and overall objectives of the future development of IMT for 2030 and beyond," Recommendation ITU-R M.2160, November 2023 — itu.int
2. 3GPP, "Release 20 Description," 2025 — 3gpp.org
3. Ericsson, "6G: Connecting a Cyber-Physical World," Ericsson Technology Review, 2025 — ericsson.com
4. GSMA Intelligence, "The Road to 6G," 2025 — gsma.com
5. O-RAN Alliance, "O-RAN Architecture Description," v10.0, 2025 — o-ran.org
6. South Korea Ministry of Science and ICT, "6G R&D Strategy," 2024 — msit.go.kr