Selected call flows
Abstract
This chapter provides a detailed overview of a number of important call flows, stepping the reader through all of the important parts of the associated process. Call flows are a fundamental tool for explaining and understanding the details of how something works—in the 5GS with its associated service-based architecture these tools increase in importance in order to explain complex procedures completely and effectively. Due to the large number of call flows in the 5GS, this chapter focuses on several of the most important ones: registration/deregistration, service request (UE-triggered and network-triggered), UE Configuration Update, PDU session establishment, handover for Xn and N2, interworking to ...
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