This module provides a comprehensive walkthrough of the fundamental signaling procedures and session management that underpin all connectivity in a 5G network. We trace the complete journey of a User Equipment (UE), starting from Initial Access and Registration with the network, including the critical handling of Network Slicing (NSSAI) and AMF Selection.

The course then delves into the 5G Call Setup flow, breaking down the key steps and messages involved in establishing a connection. A core part of this is understanding the RRC protocol, its functions, and the crucial state transitions (Idle, Inactive, Connected) that manage device mobility and power efficiency.

We further explore the establishment of communication contexts, detailing the Initial Context Setup and PDU Session Establishment flows. Finally, the module explains how user data is prioritized and delivered by diving into Quality of Service (QoS) models, QoS Flow management, and the setup of Data Radio Bearers (DRB) that map service requirements to radio resources, ensuring a high-performance user experience.