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[LTE_313] LTE-EPC Networks and Signaling (Architecture, Attach)

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The LTE Evolved Packet System (EPS) is an evolution of the 3GPP system architecture with the vision of an all-IP network finally realized. EPS consists of the Evolved UTRAN (E-UTRAN) and Evolved Packet Core (EPC). EPC supports mobility with the existing 3GPP and non-3GPP wireless networks to facilitate smooth migration, interworking, and service continuity across these networks. The EPC and E-UTRAN will be optimized for the delivery of IP-based services. EPS will use IMS as the services network and manage QoS across the system, enabling a dynamic mix of voice, video, and data services. This course provides a detailed look at the architecture of the EPC and the signaling among the UE, E-UTRAN and EPC network components.

Learning Objectives

• Sketch the EPC architecture
• Describe the components that make up the EPC and their roles
• List the key protocols of LTE-EPC like NAS, GTP and Diameter
• Explain how authentication and security are achieved in the EPC
• Describe the different options for IP address allocation
• Describe an EPS bearer setup
• Describe connectivity to multiple APNs (PDN connections)
• Explain X2- and S1-based handovers
• Describe deployment considerations

Intended Audience

This course is designed for those involved in development, integration, deployment and engineering of LTE-EPC wireless systems.

Suggested Prerequisites

• [LTE_102] LTE Overview (eLearning)
• [LTE_103] LTE SAE Evolved Packet Core (EPC) Overview (eLearning)

Course Length

2 Days Instructor Led

Course Outlines / Knowledge Knuggets

1. LTE-EPC Network Architecture
1.1. Roaming and non-roaming architecture
1.2. Roles of HSS, MME, S-GW, P-GW, and PCRF
1.3. Key features and services

2. LTE-EPC Protocols
2.1. Roles of EMM and ESM
2.2. GTPv2-C and GTP-U
2.3. Roles of SCTP and diameter

3. LTE-EPC Signaling Fundamentals
3.1. Network and UE identities
3.2. EPS and signaling bearers
3.3. PDN connections and APNs

4. Security in LTE-EPC
4.1. Security architecture
4.2. Authentication and Key Agreement (AKA)
4.3. NAS and AS security

5. Network Access in LTE-EPC
5.1. Initial attach procedure
5.2. MME, S-GW and P-GW selection
5.3. Default EPS bearer setup
5.4. IP address allocation

6. Intra-LTE Mobility
6.1. X2-based handover
6.2. S1-based handover
6.3. Tracking area updates

7. IMS and Support for Voice
7.1. IMS and seamless mobility
7.2. Circuit-Switched Fallback (CSFB)
7.3. Voice Call Continuity (VCC)
7.4. Single Radio Voice Call Continuity (SRVCC)

8. Deployment Considerations
8.1. Evolving to EPC network
8.2. Interworking with Release 8 and Pre-Release 8 3GPP networks
8.3. Interworking with Non-3GPP networks

9. End-to-End Flow
9.1. Review of attach procedure
9.2. Review of service addition


- Self-paced, animated, and interactive

- $150/each course for 6 month license

- Immediate online access upon purchase

- Flexible way to take training at any hour

- Online training transcript available

- Electronic certificates at completion

- Full list of courses at


For any additional questions,
please contact Mr. Rod Marckese
at +1-972-664-0727 x246 or

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