What is the meaning of PDU Session in 5G?
In 5G, we use a “PDU Session” to provide end-to-end user plane connectivity between the UE and a specific Data Network (DN) through the User Plane Function (UPF). A PDU Session supports one or more QoS Flows. There is a one-to-one mapping between QoS Flow and QoS profile, i.e. all packets belonging to a specific QoS Flow have the
same “5G Quality of Service Identifier” (5Ql).
what about 4G, is it same concept?
No, 4G uses an “EPS Bearer” to provide end-to-end user plane connectivity between the UE and an Access Point Name (APN) through the Packet Gateway (P-GW). There is a one-to-one mapping between EPS Bearer and QoS profile, i.e. all packets belonging to a specific EPS Bearer have the same “Quality of Service Class Identifier” (QCI). But, take care as PDU Sessions are applicable when using a 5G Core Network.
A Non-Standalone Base Station architecture connected to a 4G Core Network uses EPS Bearers.
Don’t miss our 5G NR Advanced Training to learn more about those concepts, more details below :
5G New Radio Advanced Training
Benefit from Massive discount on our 5G Training with 5WorldPro.com
Start your 5G journey and obtain 5G certification
contact us: [email protected]
){kind=link}