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:
- Explore the fundamental concepts of cellular networks such as network heterogeneity, in order to understand different deployment scenarios.
- Delve into the different LTE releases to gain a comprehensive understanding of the evolution and enhancements introduced in successive releases.
- Understand the IP-based architecture and services.
- Gain insights into radio elements such MIMO technology, Multiple Access schemes, Modulation Schemes, 4G frequency bands, and Carrier Aggregation.
- Explore the 4G network Architecture and understanding the roles of evolved NodeB (eNodeB), Mobility Management Entity (MME), Serving Gateway (SGW), Packet Data Network Gateway (PGW), HSS (Home Subscriber Server) and PCRF (Policy and Charging Rules Function).
- Explore the various protocol stacks for control plane and user plane functions.
- Improve your ability to analyze network traffic effectively using Wireshark, an essential skill for monitoring and resolving issues within 4G networks.
- Examine fundamental protocols such as Diameter, GTP and SCTP using Wireshark tool.
- Learn about the different types of bearer in 4G, i.e. default bearers and dedicated bearers with their associated QoS.
- Gain basic skills in the authentication and key agreement algorithm (LTE-AKA).
- Visualize the important processes like paging process, dedicated bearer allocation bearer process and attachment process and draw their call flows.
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:
- Understanding the EPC protocols: GTP, S1-AP, NAS, Diameter and DNS.
- Understanding the E2E 4G architecture.
- Configuring the EPC core of the LAB: provisioning a subscriber, DIAMETER configuration, DNS configuration, creating an APN as well as the PCC rules and configuring IP.
- Executing scenarios with the 4G network: attachment, paging, detachment, Mobility QOS, user plane.
- Debugging and analyzing network traces.
- Analyzing the messages and protocols.
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