Specification
3GPP TS 38.413: NG-RAN; NG Application Protocol (NGAP)
At a glance
- Title
- NG-RAN; NG Application Protocol (NGAP)
- Newest version
- V19.4.0 (Rel-19)
- Versions indexed
- 8
- Newest per release
- Rel-15: V15.13.0 (2021-10-18); Rel-16: V16.18.0 (2026-03-20); Rel-17: V17.15.0 (2026-03-20); Rel-18: V18.11.0 (2026-09-27); Rel-19: V19.4.0 (2026-09-27)
In plain words
TS 38.413 specifies the radio network layer signalling protocol for the NG interface. "The NG Application Protocol (NGAP) supports the functions of the NG interface by signalling procedures defined in this document." V19.4.0 includes a CR titled Correction on PDU set based handling indicator during mobility.
Source: 3GPP TS 38.413 V19.4.0, clause 1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/38_series/38.413/38413-j40.zip
Newest version in each release
| Release | Newest version | In the archive | TSG meeting |
|---|---|---|---|
| Rel-19 | V19.4.0 | 2026-09-27 | TSG RAN #113 |
| Rel-18 | V18.11.0 | 2026-09-27 | TSG RAN #113 |
| Rel-17 | V17.15.0 | 2026-03-20 | TSG RAN #111 |
| Rel-16 | V16.18.0 | 2026-03-20 | TSG RAN #111 |
| Rel-15 | V15.13.0 | 2021-10-18 | TSG RAN #93-e |
Source: 3GPP specification archive, versions indexed by 3GPP Scout. Each version links its official file.
Change requests in V19.4.0
V19.4.0 of TS 38.413 includes 1 CR.
| CR | Category | Subject | Source | Working group meeting | TSG TDoc |
|---|---|---|---|---|---|
| CR 1463 rev 1 | A | Correction on PDU set based handling indicator during mobility | Huawei, Lenovo, Ericsson, Qualcomm, ZTE, NEC, Samsung, Nokia, CMCC, Ofinno, China Telecom | RAN3 #133 | RP-262148 |
Source: 3GPP CR database.
Meetings behind the latest versions
Working group meetings that agreed the CRs in V19.4.0, V18.11.0:
- RAN3 #133: 2 CRs
Plenary meetings:
- TSG RAN #113 approved V19.4.0 (Rel-19)
- TSG RAN #112 approved V19.3.0 (Rel-19)
- TSG RAN #110 approved V19.1.0 (Rel-19)
Source: 3GPP CR database and specification archive, as indexed by 3GPP Scout.
Clauses changed in V19.4.0
75 clauses changed or added in V19.4.0. The 10 with the largest edits are listed. Each clause number opens Scout on that clause.
| Clause | Title | Change | CRs |
|---|---|---|---|
| 8.4.2.2 | Successful Operation | changed | CR 1463 |
| 3.1 | Definitions | changed | |
| 3.2 | Abbreviations | changed | |
| 4.3 | Specification Notations | changed | |
| 8.1 | List of NGAP Elementary Procedures | changed | |
| 8.2.4.2 | Successful Operation | changed | |
| 8.3.1.2 | Successful Operation | changed | |
| 8.4.1.4 | Abnormal Conditions | changed | |
| 9.0 | General | changed | |
| 9.1.4 | Assigned Criticality | changed |
Source: 3GPP Scout comparison of this version with the one before it.
Sources
- 3GPP TS 38.413 V19.4.0, clause 1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/38_series/38.413/38413-j40.zip
- 3GPP CR database.
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.