OVERVIEW

Roaming is an essential feature in wireless networks. It extends home PLMN coverage to other service provider networks nationally or internationally. 5G roaming is implemented as a complement to 4G roaming because the operators will be at different points of implementing 5G networks over the next 5 to 10 years. 5G roaming is different from 4G roaming as it uses Service-Based Architecture. There are several different options for interworking between 5G and 4G networks, and there are differences between IMS network implementations - VoNR versus VoLTE, etc. Further, there are many 5G use cases - Enhanced Mobile

Broadband, Massive Machine Type Communications, Ultra-Reliable Low Latency Communications, vehicle apps, etc. This course focuses on the Enhanced Mobile Broadband based on 3GPP specifications Release 16.

OBJECTIVE

After completing this course, the learner will be able to:

Define various roaming scenarios such as 5G-5G, 5G-4G

Sketch end-to-end architecture of 5G<-->5G and 5G<-->4G Roaming networks

Step through end-to-end roaming call flows - Registration and PDU Session

Walk-through important roaming procedures, e.g., handovers

Explain service delivery implementations for voice and data services

TARGET AUDIENCE

This course is intended for planning, engineering, and operations teams. It assumes existing knowledge of 5GS

Core networks.

WHAT YOU CAN EXPECT

Prerequisite: 5G Core Network Overview

Expert-Led Live Duration: 4 HOUR

OUTLINE

1. 5G Roaming Architecture

1.1 5G Roaming Scenarios

1.2 5G <--> 5G Roaming architecture

1.3 5G <--> 4G Roaming architecture

1.4 Inter-PLMN secured interconnections

Exercise: Build 5G roaming network

2. Basic 5G Operations for Roaming Ues

2.1 Session Registration and Security Setup

2.2 Policy Implementation

:: 5G Roaming and Interworking ::

2.3 PDU Session Setup in roaming scenarios

Exercise: End-to-end 5G roaming call flow

3. Special Procedures for Roaming

3.1 Network Slice Management

3.2 Network Steering

3.3 5G <--> 4G Handovers

3.4 Idle Mode behavior

4. Service Delivery in Roaming Configurations

4.1 Data services

4.2 IMS VoNR services

4.3 IMS emergency services

Putting It All Together

Programme scope, delivery arrangements and suitability are confirmed during enquiry.