6G has a lot of hype and a few hard dates. This is the realistic standardisation roadmap — how ITU and 3GPP hand off to each other, what happens in Releases 19, 20 and 21, and why "6G by 2030" is credible.
Two bodies, two jobs
- ITU-R sets the global vision and requirements (the IMT-2030 framework) and coordinates spectrum through World Radiocommunication Conferences (WRC).
- 3GPP writes the detailed, testable technical specifications that vendors and operators build to, organised in Releases.
The roadmap at a glance
| When | ITU-R | 3GPP |
|---|---|---|
| 2023 | IMT-2030 framework approved (the 6G vision) | Rel-18 frozen (5G-Advanced) |
| 2025–2026 | Requirements & evaluation work | Rel-19 (5G-Advanced phase 2 + 6G groundwork: ISAC, AI/ML, NES) |
| 2026–2027 | — | Rel-20: 6G study phase (requirements & technology) |
| 2027 | WRC-27 spectrum decisions feed 6G bands | — |
| 2028–2029 | IMT-2030 technology submission/evaluation | Rel-21: first normative 6G specs |
| ~2030 | IMT-2030 recommendation | Early commercial 6G |
Why the study phase matters
3GPP almost always does a Study Item (captured in a Technical Report, the "TR" series) before a Work Item (the normative "TS" specs). Release 20 is where the industry agrees 6G requirements and evaluates candidate technologies — spectrum, AI-native air interface, ISAC, NTN, new waveforms. Getting this right is what makes Release 21 specs implementable.
Spectrum is the pacing item
No spectrum, no network. WRC-27 carries agenda items studying IMT in parts of the 7–15 GHz range — the upper mid-band that 6G is counting on. These decisions, plus national regulators, set the real-world pace as much as the 3GPP calendar.
What engineers should take from this
- 2026–2027 is the time to learn 6G concepts (you can read the Rel-19/20 studies).
- 2028+ is when you build to real 6G specs.
- The smartest move now is mastering 5G-Advanced, because every 6G technology extends it.
Stay ahead with CafeTele's 6G & Release-20 course, the 6G complete guide and our browser 5G labs.
Frequently asked questions
When will 6G be standardised?
3GPP's 6G study phase runs in Release 20 (around 2026–2027), with the first normative 6G specifications in Release 21 (around 2028–2029) and commercial networks near 2030.
What is the difference between ITU and 3GPP for 6G?
ITU-R sets the global vision (IMT-2030) and coordinates spectrum; 3GPP writes the detailed technical specifications that vendors and operators actually build to.
What is in 3GPP Release 19 for 6G?
Release 19 is 5G-Advanced phase 2 with 6G groundwork — studies on integrated sensing (ISAC) channel modelling, expanded AI/ML for the air interface, and network energy saving.
Why is 6G targeted for 2030?
Because the standards pipeline — IMT-2030 vision, Release 20 study, WRC-27 spectrum, Release 21 specs — realistically completes by the late 2020s, enabling commercial launch around 2030.
What should I learn now to be ready for 6G?
Master 5G-Advanced (NR physical layer, 5G core, AI/ML for the RAN, NTN, ISAC). Every 6G technology builds on these, so the knowledge carries straight over.
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