The course starts with a general description of the 5G System elements and principles, various RAN — core and dual connectivity options, followed by a discussion of aspects of the new air interface and the nodes, interfaces and procedures in the NG-RAN. Some interworking aspects with E-UTRA radio and non-3GPP access are also discussed.


Knowledge of LTE/4G is required. Basic knowledge of the overall 5G System is recommended. Good 5G background knowledge is provided e.g. by Apis 5G System Overview course.

Note: The course is under development and the content may be subject to changes.

Course content

Network Overview

  • 5G System introduction, new Network Functions and Service Based Architecture
  • 5G System standardisation: history, current status and the future
  • PDU Sessions and QoS flows
  • NG-RAN elements: gNB, eNB, ng-eNB, en-gNB
  • NR and E-UTRA Dual Connectivity options
  • Non-Stand Alone (NSA) and Stand-Alone (SA) deployment options
  • Architecture options: gNB Central Units and Distributed Units, Control Plane and User Plane separation
  • Connectivity to non-3GPP access

New Radio (NR) Physical Layer Fundamentals

  • ITU-R requirements on 5G system radio performance
  • NR frequency bands, cell bandwidth, carrier aggregation, millimetre waves
  • OFDM introduction, flexible numerologies, frame and slot structure
  • Differences between NR and E-UTRA

Radio Interface Protocols

  • Overview of the radio interface protocol stack
  • RRC protocol overview and states: Idle, Connected, Inactive
  • Layer 2 protocols: SDAP, PDCP, RLC, MAC
  • Channel architecture
  • UE identities

Protocols and Functions

  • Overview of NG-RAN interfaces and protocols
  • N2/N3/NG interfaces and NGAP protocol functions
  • Xn interface and XnAP protocol functions
  • F1 interface and F1AP protocol functions for Central/Distributed Units split
  • E1 interface and E1AP protocol functions for CP/UP splitting
  • User Plane protocols
  • Network Slicing for RAN

NR and NG-RAN Procedures

  • Radio connection establishment
  • Registration and PDU Session establishment
  • Tracking Areas and Registration Areas
  • Mobility functions in RRC idle, inactive, and connected states
  • RAN-based Notification Areas (RNA)
  • Connected mode mobility: measurements and handovers (intra-NR and inter-RAT)

Duration: 2 days


Classroom training: € 1730

Virtual classroom training: € 1210

We offer substantial discounts for group bookings, and we have corporate rates with most of the operators and equipment suppliers in the world.

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