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5G Core Part 3 —User Plane Traffic and GTP-U Tunnels

Introduction

We showed in Part 2 of this series of 5G articles that after a UE (e.g., 5G smartphone) finishes its Registration Procedures with a 5G System (5GS), the Session Management Function (SMF) in the 5GS’ control plane (CP) Service Based Architecture (SBA) coordinates the setup of a Packet Data Unit (PDU) session along the data path involving the User…

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