TS 38.413 – NG Application Protocol (NGAP) Specification
3GPP TS 38.413 is the 3GPP Technical Specification for NG Application Protocol (NGAP) Specification. Its official 3GPP title is “NG Application Protocol (NGAP)”. It is published in 5 releases (Rel-15 to Rel-19); the latest version is 19.4.0 in Rel-19.
Defines NG radio network layer signalling protocol between NG-RAN and AMF, supporting NG interface functions and procedures.
Releases and versions of TS 38.413
| Release | Latest version | Links |
|---|---|---|
| Rel-19 | 19.4.0 | Read · Download (3GPP) |
| Rel-18 | 18.11.0 | Read · Download (3GPP) |
| Rel-17 | 17.15.0 | Read · Download (3GPP) |
| Rel-16 | 16.18.0 | Read · Download (3GPP) |
| Rel-15 | 15.13.0 | Read · Download (3GPP) |
Scope of TS 38.413
Category: Radio Access (NG Interface Protocol). Technology generation: 5G. Network layer: RAN.
Who should read this specification?
- Network operators
- Device manufacturers
- Researchers and academics
Implementation notes
Complexity level: Advanced. Implementation difficulty: High.
Key technologies
Excerpt from TS 38.413
1 Scope
The present document 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. NGAP is developed in accordance to the general principles stated in TS 38.401 [2] and TS 38.410 [3].
Excerpt from the official 3GPP document (Rel-19). Read the full specification with interactive table of contents.
Specifications referenced by TS 38.413
- TS 23.502 5G System Procedures
- TS 32.422 Trace, MDT and UE Measurement Control
- TS 38.304 NR UE Idle and Inactive State Procedures
- TS 33.501 5G Security Architecture
- TS 38.414 NG Interface User Plane Protocol
- TS 29.281 GTPv1-U Protocol Specification
- TS 36.413 S1 Application Protocol (S1AP) for E-UTRAN
- TS 36.300 E-UTRAN Radio Interface Protocol Architecture
- TS 38.331 NR Radio Resource Control (RRC)
- TS 38.455 NR Positioning Protocol A
- TR 21.905 3GPP Terminology and Definitions
- TS 23.007 Restoration procedures
Specifications that reference TS 38.413
- TS 23.501 5G System Architecture
- TS 23.502 5G System Procedures
- TS 33.501 5G Security Architecture
- TS 24.229 IMS SIP/SDP Call Control Protocol
- TS 38.300 NR and NG-RAN Overall Description
- TS 38.331 NR Radio Resource Control (RRC)
- TS 29.571 5G Common Data Types
- TS 29.510 NRF Service-Based Interface
- TS 24.501 5GS NAS Protocol Specification
- TS 29.002 Mobile Application Part (MAP) Specification
- TS 28.622 Generic Network Resource Information Service
- TS 23.288 5G Network Data Analytics Architecture
Other specifications in the 38 series
- TS 38.401 NG-RAN Architecture Description
- TS 38.410 NG-RAN; NG General Aspects and Principles
- TS 38.411 NG Interface Layer 1 Specification
- TS 38.412 NG Signalling Transport
- TS 38.414 NG Interface User Plane Protocol
- TS 38.415 PDU Session User Plane Protocol
- TS 38.420 Introduction to Xn interface specifications
- TS 38.421 Xn Interface Layer 1 Specification
Frequently asked questions
What is 3GPP TS 38.413?
3GPP TS 38.413 is the 3GPP Technical Specification for NG Application Protocol (NGAP) Specification. Defines NG radio network layer signalling protocol between NG-RAN and AMF, supporting NG interface functions and procedures.
Which 3GPP releases include TS 38.413?
TS 38.413 is published in 5 releases, from Rel-15 to Rel-19. The latest version on 3GPP Explorer is 19.4.0 (Rel-19).
What category does TS 38.413 belong to?
TS 38.413 belongs to the Radio Access (NG Interface Protocol) category of 3GPP specifications. It applies to 5G networks.
View the full specification with interactive table of contents, version history, and AI analysis.
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