Specification
3GPP TS 29.509: 5G System; Authentication Server Services; Stage 3
At a glance
- Title
- 5G System; Authentication Server Services; Stage 3
- Newest version
- V20.0.0 (Rel-20)
- Versions indexed
- 6
- Newest per release
- Rel-16: V16.11.0 (2026-01-06); Rel-17: V17.12.0 (2026-01-06); Rel-18: V18.6.0 (2026-01-06); Rel-19: V19.6.0 (2026-07-01); Rel-20: V20.0.0 (2026-07-01)
In plain words
TS 29.509 V20.0.0 states: "The present document specifies the stage 3 protocol and data model for the Nausf Service Based Interface." It provides stage 3 protocol definitions and message flows, and specifies the API for each service offered by the AUSF. The overview places the AUSF in the Service-based Architecture model and names N12, N60, and N13 reference point interfaces.
Source: 3GPP TS 29.509 V20.0.0, clause 1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/29_series/29.509/29509-k00.zip
Newest version in each release
| Release | Newest version | In the archive | TSG meeting |
|---|---|---|---|
| Rel-20 | V20.0.0 | 2026-07-01 | TSG CT #112 |
| Rel-19 | V19.6.0 | 2026-07-01 | TSG CT #112 |
| Rel-18 | V18.6.0 | 2026-01-06 | TSG CT #110 |
| Rel-17 | V17.12.0 | 2026-01-06 | TSG CT #110 |
| Rel-16 | V16.11.0 | 2026-01-06 | TSG CT #110 |
| Rel-15 | V15.8.0 | 2022-06-21 | TSG CT #96 |
Source: 3GPP specification archive, versions indexed by 3GPP Scout. Each version links its official file.
Meetings behind the latest versions
Plenary meetings:
- TSG CT #112 approved V20.0.0 (Rel-20)
- TSG CT #112 approved V19.6.0 (Rel-19)
- TSG CT #110 approved V18.6.0 (Rel-18)
Source: 3GPP CR database and specification archive, as indexed by 3GPP Scout.
Sources
- 3GPP TS 29.509 V20.0.0, clause 1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/29_series/29.509/29509-k00.zip
- 3GPP specification archive, versions indexed by 3GPP Scout.
- 3GPP TS 29.509 V20.0.0, clause 4.1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/29_series/29.509/29509-k00.zip
How this page was made
The facts box and the tables come straight from the 3GPP specification archive and CR database as indexed by 3GPP Scout. An AI model (GPT-6 Luna) wrote the paragraph and named the source of each sentence. Code checked every quote word for word against the stored source text and every number against the cited source. A second AI model from another company (Claude Opus 5.5) reviewed the paragraph against the same sources. The 3GPP documents themselves govern.