5G Roaming: Architecture, Protocols, and Signalling Flows

CONTENTS

This course delivers an in-depth exploration of 5G roaming, covering service-based architecture, key network functions, and signalling flows. Participants gain expertise in SEPP security, N32 interface protocols, IPX interconnect models, and the differences between home-routed and local breakout scenarios.

The curriculum also addresses 5G-to-4G interworking, quality of service mapping, and network data analytics for roaming. Designed for telecom professionals, the course emphasizes practical implementation and troubleshooting in multi-operator environments.

TARGET AUDIENCE

• Telecom System Architects
• Core Network Engineers
• IT Professionals involved in Mobile Networking
• Security Specialists

PREREQUISITES

Understanding of 4G and 5G architectures, IP networking, and telecom security.

COURSE OUTLINE

Introduction to 5G Roaming

• Introduction to 5G Roaming
• Key Roaming Architectures in 5G

SEPP Role in Roaming

• PLMN Interconnection with SEPP
• SEPP Call Flows

N32 Interface

• N32 Protocol Stack
• N32 Procedures

IPX

• IPX Network Architecture Overview
• IPX Services
• QoS Requirement for IPX

Home Routed Roaming Implementation

• Home Routed Roaming Requirements
• Call Flow for HR Scenario

5GC Interworking and Co-Existence with E-UTRAN and EPC

• Interworking Scenarios

Security

• Security in PLMN Interconnection

Data Analytics

• Roaming Architecture for Data Analytics
• NWDAF Services
• Analytics Exposure