TS 29.502 – 5G SMF Service Based Interface Stage 3
3GPP TS 29.502 is the 3GPP Technical Specification for 5G SMF Service Based Interface Stage 3. Its official 3GPP title is “5G System; Session Management Services”. It is published in 6 releases (Rel-15 to Rel-20); the latest version is 20.1.0 in Rel-20.
Stage 3 protocol and data model for Nsmf interface, defining PDU Session Management services offered by the SMF in 5G Core.
Releases and versions of TS 29.502
| Release | Latest version | Links |
|---|---|---|
| Rel-20 | 20.1.0 | Read · Download (3GPP) |
| Rel-19 | 19.8.0 | Read · Download (3GPP) |
| Rel-18 | 18.12.0 | Read · Download (3GPP) |
| Rel-17 | 17.14.0 | Read · Download (3GPP) |
| Rel-16 | 16.17.0 | Read · Download (3GPP) |
| Rel-15 | 15.10.0 | Read · Download (3GPP) |
Scope of TS 29.502
Category: Core Network (Session Management). Technology generation: 5G. Network layer: CoreNetwork.
Who should read this specification?
- Network operators
- Device manufacturers
- Researchers and academics
Implementation notes
Complexity level: Advanced. Implementation difficulty: High.
Key technologies
Specifications referenced by TS 29.502
- TS 29.571 5G Common Data Types
- TS 29.274 GTPv2-C Control Plane Protocol
- TS 33.501 5G Security Architecture
- TS 29.510 NRF Service-Based Interface
- TR 21.905 3GPP Terminology and Definitions
- TS 29.518 AMF Service Based Interface
- TS 23.380 IMS Restoration Procedures
- TS 32.422 Trace, MDT and UE Measurement Control
- TS 23.527 5G Restoration Procedures for N4 Interface
- TS 32.255 5G Data Connectivity Converged Charging
- TS 32.291 5G Charging Service-Based Interface
- TS 24.301 EPS NAS Mobility and Session Management
Specifications that reference TS 29.502
- TS 23.501 5G System Architecture
- TS 23.502 5G System Procedures
- TS 33.501 5G Security Architecture
- TS 29.500 5G Service Based Architecture
- TS 29.501 5GC SBI API Design Principles
- TS 28.552 5G Network Performance Measurements
- TS 29.274 GTPv2-C Control Plane Protocol
- TS 29.244 PFCP for Control and User Plane Separation
- TS 32.298 Charging Data Record Specification
- TS 29.514 Policy Authorization Service
- TS 29.518 AMF Service Based Interface
- TS 29.512 Session Management Policy Control Service Stage 3
Other specifications in the 29 series
- TS 29.482 SEAL AIMLE Services Stage 3 Protocol and API Specification
- TS 29.486 V2X Application Enabler (VAE) Protocol; Stage 3
- TS 29.500 5G Service Based Architecture
- TS 29.501 5GC SBI API Design Principles
- TS 29.503 UDM Service Based Interface
- TS 29.504 Nudr Unified Data Repository Services
- TS 29.505 UDR Services for Subscription Data
- TS 29.506 UDR Services for Ambient IoT Data
Frequently asked questions
What is 3GPP TS 29.502?
3GPP TS 29.502 is the 3GPP Technical Specification for 5G SMF Service Based Interface Stage 3. Stage 3 protocol and data model for Nsmf interface, defining PDU Session Management services offered by the SMF in 5G Core.
Which 3GPP releases include TS 29.502?
TS 29.502 is published in 6 releases, from Rel-15 to Rel-20. The latest version on 3GPP Explorer is 20.1.0 (Rel-20).
What category does TS 29.502 belong to?
TS 29.502 belongs to the Core Network (Session Management) category of 3GPP specifications. It applies to 5G networks.
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