The course focuses on the network architecture, nodes and mode of operations of the Evolved Packet System (EPS). It accounts for EPS’ relation to – and interoperability with – the legacy 2G/3G network as well as non-3GPP networks. The course outlines key radio technologies selected for LTE e.g. OFDM and MIMO. Basic message-level traffic cases are shown throughout the course to demonstrate important functions and concepts.


General knowledge about the architecture, terminology and modes of operation of the GSM/UMTS radio access and core networks is highly recommended. Basic knowledge of the Internet Protocol (IP) family is useful. For required background knowledge, the Apis course GSM/GPRS/UMTS System Overview is recommended.

Course content

EPS Overview

  • Evolution history of the 2G and 3G networks in operation today
  • EPS architecture and nodes, overall mode of operation
  • Basic concepts: EPS bearers, PDN connections, Quality of Service, etc.
  • Relation to legacy 3GPP networks and other networks

IMS Architecture

  • Multimedia over IP using SIP
  • IMS architecture and basic traffic cases
  • IMS relation to EPS

Evolved UTRAN

  • E-UTRAN nodes and mode of operation
  • E-UTRAN radio interface characteristics and frequency bands
  • Selected E-UTRAN traffic cases

OFDM Basics

  • OFDM (Orthogonal Frequency Division Multiplexing) principles
  • The use of OFDM in E-UTRAN
  • What is MIMO and what can it do?

E-UTRAN Protocols

  • E-UTRAN protocol stacks
  • NAS – Non Access Stratum protocols
  • RRC – Radio Resources Control
  • Layer 2: PDCP, RLC and MAC functions
  • Relay operation
  • Example traffic case

E-UTRAN Channels

  • E-UTRAN channel architecture
  • Logical, Channels, Transport Channels and Physical Channels
  • Mapping of channels on to Radio Resources
  • Layer 1 signal processing
  • Resource allocation considerations and principles
  • Scheduling algorithms examples in eNB

Evolved Packet Core

  • Core network architecture
  • EPC nodes – MME, SGW, PGW and HSS
  • EPS Security
  • Context storage and context transfer
  • Bearers , tunnelling and Quality of Service (QoS)
  • S3/S4 SGSNs and Gn/Gp SGSNs
  • Interworking with non-3GPP IP access networks

EPC Protocols

  • S1AP – the S1 Application Protocol
  • GTP – GPRS Tunnelling Protocol
  • Diameter
  • Relevant Procedures

EPS Mobility

  • Pool concepts for MME and SGW
  • Idle mode mobility scenarios
  • Tracking Area lists
  • Selection principles for MMEs, SGWs, and PGWs
  • Connected mode mobility scenarios
  • Dual registration and Idle mode Signalling Reduction (ISR)

Voice in EPS Networks

  • IMS VoIP calls in EPS
  • CS Fallback principles and SGs interface functions
  • Single Radio Voice Call Continuity (SRVCC) basics and Sv interface functions
  • Service Centralization and Continuity Application Server functions
  • Basics of IMS Centralized Services

PCC – Policy and Charging Control

  • What is Policy and Charging Control?
  • PCC architecture
  • The PCRF and the PCEF
  • Handling of user data / traffic using PCC

Duration: 3 days


Classroom training: € 2410

Virtual classroom training: € 1680

Recorded training: € 1680 Buy now

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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