Roadmap¶
Summary
- 5G isn't a single frozen spec — it's defined incrementally by 3GPP Releases, each adding new features on top of everything before it, the same way Wi-Fi generations build on prior 802.11 amendments.
- Releases 15–17 are considered "5G," and Releases 18–20 are branded 5G-Advanced — a distinct marketing/technical marker (much like the Wi-Fi Alliance's generation numbers) signaling a new wave of capability beyond the original 5G design.
- A feature being "frozen" in a release means its specification is complete — commercial availability in real chipsets and networks typically lags 18–24 months behind the freeze date.
Release 20 — In Progress (5G-Advanced + Early 6G)¶
Not yet frozen
Release 20 is under active development. Stage-1 (service requirements) froze in June 2025; Stage-2 (architecture) is targeted for September 2026; Stage-3 (protocols) is targeted for March 2027.1
| Feature | What It Adds |
|---|---|
| AI-Native Air Interface (continued) | Further specification of two-sided AI/ML models for CSI (channel state) compression, building on Release 18/19 foundations |
| NTN Satellite Access — Phase 4 | Continued maturing of satellite integration into the 5G core and radio access |
| Energy Efficiency as a Service — Phase 2 | Deeper network energy-saving mechanisms, extending Release 19's energy work |
| FRMCS — Phase 6 | Continued work on the Future Railway Mobile Communication System, replacing legacy railway radio (GSM-R) |
| Post-Quantum Cryptography (PQC) Studies | Early work adapting 5G security protocols to resist future quantum-computing attacks |
| 6G Use Case & Requirement Studies | Foundational study items (not yet specification) exploring 6G use cases, architecture, and technology options — Release 20 is explicitly a "bridge" release between 5G-Advanced and 6G |
Table 1. Release 20 — Key Work Areas
Release 19 — Frozen: December 2025¶
Closed at the December 2025 plenary in Baltimore, Release 19 is the second full 5G-Advanced release, with a strong focus on AI, IoT reach, and energy efficiency:2
| Feature | What It Adds |
|---|---|
| Ambient IoT (AIoT) | Support for battery-free or near-zero-power IoT devices that harvest energy from the radio signal itself, opening 5G to a new class of ultra-low-cost sensors |
| RedCap Evolution | Further refinement of Reduced Capability devices (see Release 17), lowering cost and complexity even further for mid-tier IoT |
| NTN Enhancements (Regenerative Payload) | Satellites gain onboard processing (rather than just relaying signals), enabling more capable direct-to-device satellite connectivity |
| AI/ML Expansion | Extends Release 18's AI/ML air-interface work into new use cases and network functions |
| Network Energy Saving (continued) | Further mechanisms for reducing base station power consumption without sacrificing coverage |
| XR / Media Streaming Enhancements | Improved support for split rendering, multi-access media delivery, and low-latency streaming for XR (extended reality) services |
Table 2. Release 19 — Key Features
Release 18 — Frozen: 2024 ("5G-Advanced" begins)¶
Release 18 marks the formal start of 5G-Advanced, the first release to carry the distinct 5G-Advanced branding:3
| Feature | What It Adds |
|---|---|
| AI/ML for the Air Interface | The first standardized use of AI/ML models directly in the radio interface, starting with CSI feedback prediction |
| Enhanced RedCap (eRedCap) | An even lighter-weight RedCap device tier, further reducing device cost/complexity for basic IoT |
| Network Energy Savings | Base stations can dynamically power down unused capacity based on real-time traffic load |
| Multi-SIM Enhancements | Better network-assisted handling of devices with multiple active SIM profiles |
| NR-NTN Improvements | Expanded satellite (Non-Terrestrial Network) support building on Release 17's introduction of NTN |
| Subband Full Duplex (study) | Early groundwork letting a base station transmit and receive in the same frequency band simultaneously, improving spectral efficiency |
| XR (Extended Reality) Support | Radio and system-level optimizations for the strict latency/throughput demands of AR/VR traffic |
Table 3. Release 18 — Key Features
Release 17 — Frozen: 2022¶
The final release of the original "5G" wave, Release 17 focused on expanding 5G into new device classes and deployment scenarios:4
| Feature | What It Adds |
|---|---|
| RedCap (Reduced Capability) | A new "5G IoT" device tier — cheaper, lower-power, lower-complexity devices that don't need full smartphone-grade radio capability |
| NR-NTN (Non-Terrestrial Networks) | The first standardized support for satellite links as part of the 5G radio access network |
| Private Network Enhancements | Improved support for standalone non-public networks (enterprise/campus 5G) |
| Multi-SIM Support | Initial network signaling to help devices manage more than one active SIM efficiently |
| Enhanced Positioning | Improved location-accuracy techniques, useful for industrial and logistics use cases |
| Sidelink Enhancements | Improvements to device-to-device (V2X-style) communication introduced in Release 16 |
Table 4. Release 17 — Key Features
Release 16 — Frozen: 2020¶
The first major enhancement release after the initial 5G launch, Release 16 pushed 5G into industrial and vehicular use cases:5
| Feature | What It Adds |
|---|---|
| URLLC (Ultra-Reliable Low-Latency Communication) | Enhancements enabling sub-millisecond-class reliability, targeting factory automation and other mission-critical use cases |
| NR-U (NR-Unlicensed) | Lets 5G NR operate in unlicensed spectrum, similar in spirit to Wi-Fi's use of unlicensed bands |
| Cellular V2X (Vehicle-to-Everything) | Direct device-to-device sidelink communication for connected vehicles |
| Integrated Access and Backhaul (IAB) | Lets a 5G base station use the same radio to both serve users and relay backhaul traffic to other base stations, reducing fiber dependency |
| MIMO Enhancements | Improved multi-antenna techniques building on Release 15's foundation |
| Positioning Services | Introduced dedicated 5G-based location/positioning capability |
Table 5. Release 16 — Key Features
Release 15 — Frozen: 2018 (NSA) / 2019 (SA) — First 5G NR¶
Release 15 is the foundational 5G release — the first version of 5G NR (New Radio):6
| Feature | What It Adds |
|---|---|
| 5G NR Air Interface | The base radio design: OFDM-based waveform, scalable numerology, and support for both sub-6 GHz and mmWave spectrum |
| Non-Standalone (NSA) Mode | 5G NR anchored to an existing 4G LTE core network — the fastest path to early 5G deployment |
| Standalone (SA) Mode | A full 5G NR radio paired with a new 5G Core (5GC), enabling 5G-native features without relying on LTE |
| Massive MIMO | Large-scale multi-antenna arrays at the base station, a core enabler of 5G's capacity gains |
| Network Slicing | Ability to carve a single physical network into multiple virtual, isolated logical networks for different use cases |
| Enhanced Mobile Broadband (eMBB) | The headline "faster phone internet" use case most consumers associate with 5G |
Table 6. Release 15 — Key Features
Useful Resources¶
- 3GPP Releases — official release overview and status pages
- 3GPP Work Plan — live tracker of every active study and work item
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3GPP. (n.d.). Release 20. https://www.3gpp.org/specifications-technologies/releases/release-20 ↩
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3GPP. (n.d.). Release 19. https://www.3gpp.org/specifications-technologies/releases/release-19 ↩
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3GPP. (n.d.). Release 18. https://www.3gpp.org/specifications-technologies/releases ↩
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3GPP. (n.d.). Release 17. https://www.3gpp.org/specifications-technologies/releases ↩
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3GPP. (n.d.). Release 16. https://www.3gpp.org/specifications-technologies/releases ↩
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3GPP. (n.d.). Release 15. https://www.3gpp.org/specifications-technologies/releases ↩