5G : PDU Session Establishment
For user plane connection, PDU Session establishment is required and may correspond to:
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a UE initiated PDU Session Establishment procedure (depicted above)
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a UE initiated PDU Session handover from EPS to 5GS.
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a Network triggered PDU Session Establishment procedure.
Youtube link - https://youtu.be/tWoumfMKgDs
5G Course link - https://www.udemy.com/course/5g-architecture-design-protocols-evolution-deployment/?couponCode=5G-RAHUL-MAY13