5G also comprises a next generation core network that is currently in the phase of development and standardization. End of this year first trial will start while commercial deployments using fully compliant equipment will start around 2020. The core network has to provide Quality of Service for new services like Enhanced Mobile Broadband (eMBB), Massive Machine Type (mMTC) Communications and Ultra-Reliable and Low Latency Communications (URLLC). The 5G core will support new technologies like network slicing, service and context awareness, network function virtualization, multi-connectivity and multi-tenancy as well as a new QoS and security framework. Also the interfaces shall be access agnostic. New cloud RAN solutions with centralized processing also need to support various fronthaul/backhaul options. Based on its attendance in 3GPP, the trainer will also provide the latest update of 5G standardisation in 3GPP.  


This training course will provide participants with a detailed understanding of the 5G radio architecture and protocols. The course covers the architectural layout using Network Functions and the newly-defined network nodes in the 5G Core Network (5GC). Key functions of the new 5G Core are Network Function Virtualization, Network Slicing, Multi-Tenancy and Multi-Connectivity. 5G services will once again be IMS based, but using a new Quality of Service Architecture. Next all relevant interfaces between these 5GC nodes and the 5G Base Stations are explained. In particular we look at different split options within the Radio Access Network as well as the functionality of the gNB protocol stack. Also various deployment aspects are presented such as LTE/5G Dual Connectivity either using the EPC or the 5GC as core network. 

Day 1

Introduction 5G Core Networks

Handling of Network Functions
Entities and Functional Split
Roaming and Data Routing
5GC Interworking and Migration from EPC
Non-3GPP Access (e.g. WiFi, Satellite)

Next Generation 5G Architecture
  • Overview  Next Generation 5G Architecture
  • Service Based Architecture vs. Reference Point Architecture,
  • Key Network Functionality or the new 5G Core
Architecture Evolution from EPC to 5GC
  • Standalone vs. Non-Standalone Radio Access Network 
  • Dual Connectivity with eLTE or 5G as Master Node
  • Impact on Interfaces and Mobility
Key Network Technologies
  • Network Function Virtualisation and Sofware Defined Networks 
  • Network Slicing and End-to-End Quality of Service 
  • Multi-Connectivity and Multi-RAT Traffic Control 
  • Multi-Tenancy 
  • Context Aware Networks 
  • 5GC Standardisation in 5G Phase I and Phase II 
5G Core Network Details
  • Handling of Network Functions 
  • Entities and Functional Split 
  • Roaming and Data Routing 
  • 5GC Interworking and Migration from EPC 
  • Non-3GPP Access (e.g. WiFi, Satellite) 
5G Quality of Service Architecture
  • Overview QoS Architecture
  • QoS Flow Concept and Radio Bearer
  • Service Differentiation, Signalling Flow and QoS Attributes
  • Standardized 5G QoS Identifiers and Packet Classification 
  • Pre-Authorized QoS, Reflective QoS and Per Packet based QoS

Day 2

Network Slicing
  • Overview Network Slicing Architecture
  • Use Cases and Slice Selection
  • Resource Multiplexing and Isolation
  • RAN Support of Slicing and RAN Sharing
IP Multimedia Service Architecture
  • Overview IP Multimedia System
  • IMS Architecture and Functional Split
  • Session Establishment and QoS Control 
5G Applications
  • 5GC Services e.g. PWS, SMS, Mission Critical and Priority Services 
  • Voice and Video over 5GC incl. RAN Assisted Codec Adaptation 
5G RAN Control Plane Architecture
  • Overview Control and User Plane
  • Radio Resource Control
  • Acquisition of System Information 
  • Initial Access and RRC Connection Control
  • New RRC Inactive State and RAN Paging / Notification 
5G RAN User Plane Architecture
  • SDAP-, PDCP-, RLC-, MAC-Layer Functionality
  • Signalling Radio Bearer and Data Radio Bearer
  • RLC transmission modes
  • MAC Multiplexing and Control Elements
Dual Connectivity Architecture


  • Control and User Plane Architecture and Bearer Types
  • LTE / New Radio Dual Connectivity 
  • RRC Terminal Points and inter-eNB/gNB signalling



Interfaces 5G Core / RAN (N2/N3 IF)
  • Transport Network Topologies 
  • N2 and N3 Interfaces and Application Protocols
  • N2 and N3 Control Procedures
  • GTP and SCTP Protocol
  • Xn Interface 
RAN Internal Architecture
  • Centralized and Distributed Units and Remote Radio Heads 
  • Fronthaul Interfaces F1 / F2 and Standardisation Thereof 
  • Control- / User Plane Split of Centralized Unit (E1 Interface) 
  • RAN Deployment Options  
5G RAN Procedures
  • Uplink and Downlink Handover Procedure
  • Data Forwarding during Handover 
  • Contention based and Non-Contention based RACH 
  • 2-Step versus 4-Step RACH procedure