40412 «EPC Signaling»

Course Code




The Evolved Packet System (EPS) consists of the Evolved UTRAN (e-UTRAN) and Evolved Packet Core (EPC that provides packet data services to mobile communication. EPC supports mobility with existing 3GPP and non-3GPP wireless networks to facilitate smooth migration, interworking and service continuity across these networks

This course explains the protocols and signaling in the EPC. It covers the interfaces in the EPC and also interworking with 3GPP and non-3GPP architectures. Traffic cases for the EPC describing the various scenarios such as Mobility, Session and Bearer management are explained.


Learning objectives

On completion of this course the participants will be able to:

  • Describe the EPC  architecture
  • List of interfaces to 2G/3G network and interworking interfaces to non-3GPP network.
  • Explain the Signaling and Protocols between the nodes
  • List and explain some EPS Identifiers
  • List and describe the key protocols used in the EPC network, SCTP, Diameter, S1-AP, NAS, SGs-AP, GTP, RADIUS.
  • Understand, describe and explain how different traffic cases are handled by the EPC nodes
  • Describe the Identity, Authentication and Location Management procedures
  • Explain the traffic cases of EPS Session Management
  • Describe selected traffic cases for Mobility and Handover procedures.
  • Analyze detailed EPS signaling flows and Message content for EPS procedure, e.g.  Attach, Detach, TAU etc. from actual traces.
  • Explain the supporting services for EPC
  • Describe signaling from the Home Subscriber Server (HSS) and AAA
  • Describe the DNS procedures for EPC
  • e2e Voice Signaling over LTE/EPC using IMS, CSFB, SRVCC.


Target audience

The target audience for this course is:

Network Engineer, Service Engineer, Service Design Engineer, Network Design Engineer



The participants should have a general knowledge in cellular systems and radio technology


Duration and class size

The recommended length of the course is 2 days..

The maximum number of participants is 16


Learning situation

This course is based on theoretical instructor-led lessons given in a classroom environment.


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