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5G Core

Procedures and Functions

ExperTeach Networking Logo

The setup of 5G networks is in full progress on a worldwide scale. Here, the focus is initially on provisioning the new air interface New Radio. In a second step, the innovative 5G Core network has to be set up. In addition to the basic procedures, new ideas, such as Service-based Architecture, Network Slicing, and Mobile Edge Computing, constitute the focus of interest. This 5G training imparts all essential aspects on the topic 5G Core.

Course Contents

  • Functions and Interfaces in the 5G Core
  • Processes in the 5G Core
  • NGAP
  • NAS-5G
  • Protocols of 5G Core
  • Network Slicing
  • Mobile Edge Computing
  • Service-based Architecture
  • Roaming
  • Control Procedures at the AMF
  • Control Procedures at the SMF
  • Control Procedures at the PCF
  • Payload Data Streams via UPF
  • Database Queries at the UDM
  • Software-defined Networking
  • Service-based Interfaces

The detailed digital documentation package, consisting of an e-book and PDF, is included in the price of the course.

Premium Course Documents

In addition to the digital documentation package, the exclusive Premium Print Package is also available to you.

  • High-quality color prints of the ExperTeach documentation
  • Exclusive folder in an elegant design
  • Document pouch in backpack shape
  • Elegant LAMY ballpoint pen
  • Practical notepad
Premium Print
The Premium Print Package can be added during the ordering process for € 150,- plus VAT (only for classroom participation).

Request in-house training now

Target Group

This 5G training is offered for everyone with a basic 5G know-how and the wish to become acquainted with the details of procedures in 5G Core.

Knowledge Prerequisites

Basic mobile communications know-how as well as attendance at the 5G Mobile Communications—Architecture & New Radio course should be helpful.

1 5G Core Overview
1.1 The 5G Standard
1.2 Control and User Plane Separation (CUPS)
1.2.1 From 4G to 5G
1.3 The Functional Elements in an Overview
1.3.1 Network Repository Function (NRF)
1.3.2 Access & Mobility Management Function (AMF)
1.3.3 Session Management Function (SMF)
1.3.4 User Plane Function (UPF)
1.3.5 Authentication Server Function (AUSF)
1.3.6 User Data Management (UDM)
1.3.7 5G Data Storage: UDR & UDSF
1.3.8 UDICOM
1.3.9 Policy Control Function (PCF)
1.3.10 Binding Support Function (BSF)
1.3.11 Network Expose Function (NEF)
1.3.12 Network Slice Selection Function (NSSF)
1.3.13 SMS Function (SMSF)
1.3.14 LMF
1.3.15 Network Data Analytics Function (NWDAF)
1.3.16 Charging in 5GS: The CHF
1.3.17 Service Communication Proxy (SCP)
1.4 Time-Sensitive Networking (TSN)
1.5 IMS & 5G
1.5.1 Vo5G and Network Slicing
1.5.2 Vo5G and Edge Computing
1.5.3 Service-Based Architecture and IMS
2 Service-Based Architecture
2.1 Network Functions
2.2 Virtual Network Functions
2.2.1 Virtualization of the NF
2.2.2 Critical Questions
2.2.3 Benefits of NFV
2.2.4 Integration of NFV into SDN
2.3 Service-Based Architecture
2.3.1 SBA Communication Models (1/2)
2.3.2 SBI Protocol Stack
2.4 HTTP Versions
2.4.1 HTTP Version 2
2.4.2 HTTP/2 Versions
2.4.3 Communication Behavior of HTTP/2
2.4.4 HTTP Request Header
2.4.5 HTTP Header Fields
2.4.6 HTTP Responses
2.4.7 A Practice-based Scenario
2.5 What is an API?
2.5.1 Abstraction
2.5.2 Interfaces to Software Processes
2.5.3 Generic Description of a REST API
2.6 Data Structure Modeling
2.6.1 JSON
2.6.2 YAML
2.7 OpenAPI Specification
2.8 Swagger Editor
3 Protocols
3.1 5G Core Protocols—Overview
3.2 The 5G NAS Protocol: Transfer & Tasks
3.2.1 5GMM-specific Procedures
3.2.2 5GMM Common Procedures
3.2.3 NAS-5GS in the Trace
3.3 N2 Interface: NGAP Tasks and Procedures
3.3.1 NGAP in the Trace
3.4 N4 Interface—PFCP
3.4.1 PFCP Procedures—Examples
3.4.2 PFCP in the Trace
3.5 Payload Data: GTP-U
3.6 N26 Interface: Interworking EPC - 5GC
4 Processes in the 5G Core
4.1 Registration Variants
4.1.1 Subscriber- and Equipment-related Identities
4.1.2 Initial Registration (1/3)
4.2 PDU Session Establishment
4.3 Handover
4.3.1 Xn-based Handover
4.3.2 N2-based Handover
4.4 De-Registration
4.5 EPC—5GS Interworking and Migration
5 5G Roaming
5.1 5G Roaming in an Overview
5.2 SEPP
5.3 Registration in Case of Roaming
5.4 Steering of Roaming (SOR)
5.4.1 SoR-AF
5.4.2 SoR-AF Procedure
5.5 Local Breakout
5.6 Home Routing
5.6.1 PDU Session Request with Home Routing (1/2)
5.7 IPUPS
5.8 IPX
5.8.1 Direct or Mediated Roaming
5.8.2 N32-c: TLS 1.2 or 1.3
5.8.3 PRINS
6 Non-3GPP Access
6.1 Untrusted Non-3GPP Access
6.2 Trusted Non-3GPP Access
6.3 Wireline Non-3GPP Access
A List of Abbreviations

Classroom training

Do you prefer the classic training method? A course in one of our Training Centers, with a competent trainer and the direct exchange between all course participants? Then you should book one of our classroom training dates!

Hybrid training

Hybrid training means that online participants can additionally attend a classroom course. The dynamics of a real seminar are maintained, and the online participants are able to benefit from that. Online participants of a hybrid course use a collaboration platform, such as WebEx Training Center or Saba Meeting. To do this, a PC with browser and Internet access is required, as well as a headset and ideally a Web cam. In the seminar room, we use specially developed and customized audio- and video-technologies. This makes sure that the communication between all persons involved works in a convenient and fault-free way.

Online training

You wish to attend a course in online mode? We offer you online course dates for this course topic. To attend these seminars, you need to have a PC with Internet access (minimum data rate 1Mbps), a headset when working via VoIP and optionally a camera. For further information and technical recommendations, please refer to.

Tailor-made courses

You need a special course for your team? In addition to our standard offer, we will also support you in creating your customized courses, which precisely meet your individual demands. We will be glad to consult you and create an individual offer for you.
Request in-house training now
PDF SymbolYou can find the complete description of this course with dates and prices ready for download at as PDF.

The setup of 5G networks is in full progress on a worldwide scale. Here, the focus is initially on provisioning the new air interface New Radio. In a second step, the innovative 5G Core network has to be set up. In addition to the basic procedures, new ideas, such as Service-based Architecture, Network Slicing, and Mobile Edge Computing, constitute the focus of interest. This 5G training imparts all essential aspects on the topic 5G Core.

Course Contents

  • Functions and Interfaces in the 5G Core
  • Processes in the 5G Core
  • NGAP
  • NAS-5G
  • Protocols of 5G Core
  • Network Slicing
  • Mobile Edge Computing
  • Service-based Architecture
  • Roaming
  • Control Procedures at the AMF
  • Control Procedures at the SMF
  • Control Procedures at the PCF
  • Payload Data Streams via UPF
  • Database Queries at the UDM
  • Software-defined Networking
  • Service-based Interfaces

The detailed digital documentation package, consisting of an e-book and PDF, is included in the price of the course.

Premium Course Documents

In addition to the digital documentation package, the exclusive Premium Print Package is also available to you.

  • High-quality color prints of the ExperTeach documentation
  • Exclusive folder in an elegant design
  • Document pouch in backpack shape
  • Elegant LAMY ballpoint pen
  • Practical notepad
Premium Print
The Premium Print Package can be added during the ordering process for € 150,- plus VAT (only for classroom participation).

Request in-house training now

Target Group

This 5G training is offered for everyone with a basic 5G know-how and the wish to become acquainted with the details of procedures in 5G Core.

Knowledge Prerequisites

Basic mobile communications know-how as well as attendance at the 5G Mobile Communications—Architecture & New Radio course should be helpful.

1 5G Core Overview
1.1 The 5G Standard
1.2 Control and User Plane Separation (CUPS)
1.2.1 From 4G to 5G
1.3 The Functional Elements in an Overview
1.3.1 Network Repository Function (NRF)
1.3.2 Access & Mobility Management Function (AMF)
1.3.3 Session Management Function (SMF)
1.3.4 User Plane Function (UPF)
1.3.5 Authentication Server Function (AUSF)
1.3.6 User Data Management (UDM)
1.3.7 5G Data Storage: UDR & UDSF
1.3.8 UDICOM
1.3.9 Policy Control Function (PCF)
1.3.10 Binding Support Function (BSF)
1.3.11 Network Expose Function (NEF)
1.3.12 Network Slice Selection Function (NSSF)
1.3.13 SMS Function (SMSF)
1.3.14 LMF
1.3.15 Network Data Analytics Function (NWDAF)
1.3.16 Charging in 5GS: The CHF
1.3.17 Service Communication Proxy (SCP)
1.4 Time-Sensitive Networking (TSN)
1.5 IMS & 5G
1.5.1 Vo5G and Network Slicing
1.5.2 Vo5G and Edge Computing
1.5.3 Service-Based Architecture and IMS
2 Service-Based Architecture
2.1 Network Functions
2.2 Virtual Network Functions
2.2.1 Virtualization of the NF
2.2.2 Critical Questions
2.2.3 Benefits of NFV
2.2.4 Integration of NFV into SDN
2.3 Service-Based Architecture
2.3.1 SBA Communication Models (1/2)
2.3.2 SBI Protocol Stack
2.4 HTTP Versions
2.4.1 HTTP Version 2
2.4.2 HTTP/2 Versions
2.4.3 Communication Behavior of HTTP/2
2.4.4 HTTP Request Header
2.4.5 HTTP Header Fields
2.4.6 HTTP Responses
2.4.7 A Practice-based Scenario
2.5 What is an API?
2.5.1 Abstraction
2.5.2 Interfaces to Software Processes
2.5.3 Generic Description of a REST API
2.6 Data Structure Modeling
2.6.1 JSON
2.6.2 YAML
2.7 OpenAPI Specification
2.8 Swagger Editor
3 Protocols
3.1 5G Core Protocols—Overview
3.2 The 5G NAS Protocol: Transfer & Tasks
3.2.1 5GMM-specific Procedures
3.2.2 5GMM Common Procedures
3.2.3 NAS-5GS in the Trace
3.3 N2 Interface: NGAP Tasks and Procedures
3.3.1 NGAP in the Trace
3.4 N4 Interface—PFCP
3.4.1 PFCP Procedures—Examples
3.4.2 PFCP in the Trace
3.5 Payload Data: GTP-U
3.6 N26 Interface: Interworking EPC - 5GC
4 Processes in the 5G Core
4.1 Registration Variants
4.1.1 Subscriber- and Equipment-related Identities
4.1.2 Initial Registration (1/3)
4.2 PDU Session Establishment
4.3 Handover
4.3.1 Xn-based Handover
4.3.2 N2-based Handover
4.4 De-Registration
4.5 EPC—5GS Interworking and Migration
5 5G Roaming
5.1 5G Roaming in an Overview
5.2 SEPP
5.3 Registration in Case of Roaming
5.4 Steering of Roaming (SOR)
5.4.1 SoR-AF
5.4.2 SoR-AF Procedure
5.5 Local Breakout
5.6 Home Routing
5.6.1 PDU Session Request with Home Routing (1/2)
5.7 IPUPS
5.8 IPX
5.8.1 Direct or Mediated Roaming
5.8.2 N32-c: TLS 1.2 or 1.3
5.8.3 PRINS
6 Non-3GPP Access
6.1 Untrusted Non-3GPP Access
6.2 Trusted Non-3GPP Access
6.3 Wireline Non-3GPP Access
A List of Abbreviations

Classroom training

Do you prefer the classic training method? A course in one of our Training Centers, with a competent trainer and the direct exchange between all course participants? Then you should book one of our classroom training dates!

Hybrid training

Hybrid training means that online participants can additionally attend a classroom course. The dynamics of a real seminar are maintained, and the online participants are able to benefit from that. Online participants of a hybrid course use a collaboration platform, such as WebEx Training Center or Saba Meeting. To do this, a PC with browser and Internet access is required, as well as a headset and ideally a Web cam. In the seminar room, we use specially developed and customized audio- and video-technologies. This makes sure that the communication between all persons involved works in a convenient and fault-free way.

Online training

You wish to attend a course in online mode? We offer you online course dates for this course topic. To attend these seminars, you need to have a PC with Internet access (minimum data rate 1Mbps), a headset when working via VoIP and optionally a camera. For further information and technical recommendations, please refer to.

Tailor-made courses

You need a special course for your team? In addition to our standard offer, we will also support you in creating your customized courses, which precisely meet your individual demands. We will be glad to consult you and create an individual offer for you.
Request in-house training now

PDF SymbolYou can find the complete description of this course with dates and prices ready for download at as PDF.