TS 23.502 – 5G System Procedures
3GPP TS 23.502 is the 3GPP Technical Specification for 5G System Procedures. Its official 3GPP title is “Procedures for the 5G System (5GS)”. It is published in 6 releases (Rel-15 to Rel-20); the latest version is 20.3.0 in Rel-20.
Defines Stage 2 end-to-end procedures and network function services for 5G system architecture, including registration, mobility, sessions, policy, charging, and interworking.
Releases and versions of TS 23.502
| Release | Latest version | Links |
|---|---|---|
| Rel-20 | 20.3.0 | Read · Download (3GPP) |
| Rel-19 | 19.9.0 | Read · Download (3GPP) |
| Rel-18 | 18.14.0 | Read · Download (3GPP) |
| Rel-17 | 17.15.0 | Read · Download (3GPP) |
| Rel-16 | 16.19.0 | Read · Download (3GPP) |
| Rel-15 | 15.17.0 | Read · Download (3GPP) |
Scope of TS 23.502
Category: Core Network (5GS Procedures and Service-Based Architecture). Technology generation: 5G. Network layer: CoreNetwork.
Who should read this specification?
- Network operators
- Device manufacturers
- Regulators and standards bodies
- Researchers and academics
Implementation notes
Complexity level: Expert. Implementation difficulty: High.
Key technologies
Excerpt from TS 23.502
1 Scope
The present document defines the Stage 2 procedures and Network Function Services for the 5G system architecture which is described in the TS 23.501 [2] and for the policy and charging control framework which is described in TS 23.503 [20].
Excerpt from the official 3GPP document (Rel-20). Read the full specification with interactive table of contents.
Specifications referenced by TS 23.502
- TS 23.369 5GS Architecture for Ambient IoT
- TS 23.527 5G Restoration Procedures for N4 Interface
- TS 38.413 NG Application Protocol (NGAP) Specification
- TS 38.331 NR Radio Resource Control (RRC)
- TS 23.401 Evolved Packet System Architecture
- TS 33.501 5G Security Architecture
- TS 36.331 E-UTRA Radio Resource Control (RRC) Protocol
- TS 29.500 5G Service Based Architecture
- TS 29.518 AMF Service Based Interface
- TR 21.905 3GPP Terminology and Definitions
- TS 23.503 5G Policy and Charging Control Framework
- TS 23.122 Idle Mode and PLMN Selection Procedures
Specifications that reference TS 23.502
- TS 23.501 5G System Architecture
- TS 33.501 5G Security Architecture
- TS 24.229 IMS SIP/SDP Call Control Protocol
- TS 23.401 Evolved Packet System Architecture
- TS 36.331 E-UTRA Radio Resource Control (RRC) Protocol
- TS 23.228 IP Multimedia Core Network Subsystem
- TS 38.300 NR and NG-RAN Overall Description
- TS 36.300 E-UTRAN Radio Interface Protocol Architecture
- TS 38.331 NR Radio Resource Control (RRC)
- TS 29.571 5G Common Data Types
- TS 29.510 NRF Service-Based Interface
- TS 29.500 5G Service Based Architecture
Other specifications in the 23 series
- TS 23.468 Group Communication System Enablers for LTE
- TS 23.479 MBMS API for Mission Critical Services
- TS 23.482 AI/ML Enablement for Verticals
- TS 23.501 5G System Architecture
- TS 23.503 5G Policy and Charging Control Framework
- TS 23.506 IMS Stage 2 for NGN (v810)
- TS 23.507 VCC for TISPAN Release 2
- TS 23.508 Presence Service for NGN Stage 2
Frequently asked questions
What is 3GPP TS 23.502?
3GPP TS 23.502 is the 3GPP Technical Specification for 5G System Procedures. Defines Stage 2 end-to-end procedures and network function services for 5G system architecture, including registration, mobility, sessions, policy, charging, and interworking.
Which 3GPP releases include TS 23.502?
TS 23.502 is published in 6 releases, from Rel-15 to Rel-20. The latest version on 3GPP Explorer is 20.3.0 (Rel-20).
What category does TS 23.502 belong to?
TS 23.502 belongs to the Core Network (5GS Procedures and Service-Based Architecture) 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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