5G
5GC
5G Core Network
Rel-15 (2018)
Overview
The service-based, cloud-native core network architecture underpinning 5G NR.
Full technical content for 5GC is coming soon. In the meantime, browse the related specifications below.
Specifications
TS 24.501
Non-Access-Stratum (NAS) protocol for 5G System (5GS); Stage 3
Protocol
Rel-17TS5GCUpdated 2026-07-25
TS 23.002
Network architecture
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.003
Numbering, addressing and identification
Architecture
Rel-20TS5GCUpdated 2026-07-26
TS 23.007
Restoration procedures
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.008
Organization of subscriber data
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.009
Handover procedures
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.011
Technical realization of Supplementary Services
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.012
Location management procedures
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.014
Support of Dual Tone Multi-Frequency (DTMF) signalling
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.015
Technical realization of Operator Determined Barring (ODB)
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.016
Subscriber data management; Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.018
Basic call handling; Technical realization
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.032
Universal Geographical Area Description (GAD)
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.034
High Speed Circuit Switched Data (HSCSD); Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.035
Immediate Service Termination (IST); Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.038
Alphabets and language-specific information
Architecture
Rel-20TS5GCUpdated 2026-07-26
TS 23.040
Technical realization of the Short Message Service (SMS)
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.041
Technical realization of Cell Broadcast Service (CBS)
Architecture
Rel-20TS5GCUpdated 2026-07-26
TS 23.042
Compression algorithm for text messaging services
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.053
Tandem Free Operation (TFO); Service description; Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.057
Mobile Execution Environment (MExE); Functional description; Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.066
Support of Mobile Number Portability (MNP); Technical realization; Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.067
enhanced Multi-Level Precedence and Pre-emption Service (eMLPP); Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.072
Call Deflection (CD) supplementary service; Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.078
Customised Applications for Mobile network Enhanced Logic (CAMEL) Phase 4; Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.079
Support of Optimal Routeing (SOR); Technical realization
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.081
Line Identification supplementary services; Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.082
Call Forwarding (CF) supplementary services; Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.083
Call Waiting (CW) and Call Hold (HOLD) supplementary services; Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.084
Multi Party (MPTY) supplementary service; Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.085
Closed User Group (CUG) supplementary service; Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.086
Advice of Charge (AoC) supplementary services; Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.087
User-to-User Signalling (UUS) supplementary service; Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.088
Call Barring (CB) Supplementary Services; Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.090
Unstructured Supplementary Service Data (USSD); Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.091
Explicit Call Transfer (ECT) supplementary service; Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.093
Technical realization of Completion of Calls to Busy Subscriber (CCBS); Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.094
Follow-Me (FM); Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.096
Name identification supplementary services; Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.097
Multiple Subscriber Profile (MSP) (Phase 2); Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.107
Quality of Service (QoS) concept and architecture
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.108
Mobile radio interface layer 3 specification, core network protocols; Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.116
Super-Charger technical realization; Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.119
Gateway Location Register (GLR); Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.122
Non-Access-Stratum (NAS) functions related to Mobile Station (MS) in idle mode
Architecture
Rel-20TS5GCUpdated 2026-07-26
TS 23.135
Multicall supplementary service; Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.139
3GPP system - fixed broadband access network interworking; Stage 2
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.141
Presence service; Architecture and functional description
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.142
Value-added Services for SMS (VAS4SMS); Interface and signalling flow
Architecture
Rel-15TS5GCUpdated 2026-07-25
TS 23.146
Technical realization of facsimile Group 3 non-transparent
Architecture
Rel-15TS5GCUpdated 2026-07-25