
4G System Engineering: Architectures, Concepts, and Call Flows
This Learning Path takes you through the fundamentals of 4G technology, starting with the basics of LTE architecture, including concepts like EPC (Evolved Packet Core), RAN, and signaling protocols. As you advance, you'll dive into core topics such as bearer management, QoS, and much more. Hands-on labs focus on configuring and troubleshooting 4G core components and analyzing call flows, enabling you to master the essential building blocks of 4G networks from development to deployment.
About The Learning path
Audiences
Learning Path Flow:

Lab Architecture:
This Hands-On Training represents a playground that consist of virtualized EPC and eNodeB alongside UE, that can allow beginners to get familiar with different 4G concepts.

Lab Objectives:
- Gain a deep understanding of LTE architecture, including eNodeB, MME, SGW, PGW, HSS, and PCRF, to optimize 4G network operations.
- Develop expertise in LTE radio technologies like MIMO, modulation, multiple access, and carrier aggregation for performance enhancement.
- Master LTE protocol stacks and traffic analysis with Wireshark, inspecting GTP, Diameter, and SCTP for effective troubleshooting.
- Learn to manage LTE bearers and QoS, understanding default and dedicated bearers, attachment, paging, and bearer setup.
- Strengthen your knowledge of LTE security, including authentication and key agreement (LTE-AKA), for securing and troubleshooting networks.
Lab Architecture:
This Hands-On Training consists of a virtualized Evolved Packet Core (EPC) alongside a radio access network and a UE that allows the user to simulate different 4G scenarios.

Lab Objectives:
- Deepen your knowledge of EPC protocols like GTP, S1-AP, NAS, Diameter, and DNS to understand their role in LTE networks.
- Gain expertise in 4G E2E architecture to understand the interaction between core and radio network components.
- Enhance your ability to troubleshoot and analyze LTE network traces for better diagnostics and issue resolution.
- Develop proficiency in QoS, mobility, and session management to optimize network performance and user experience.
- Master protocol analysis by interpreting key messages and signaling flows in a live LTE environment.
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