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Mastering 5G Network Design, Implementation, and Operations
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In this section, we will go over the various new concepts and terminologies introduced with 5G.
A PDU session is the logical connection between the UE and the data network. It is by the means of this logical connection that the UE is able to browse data, place calls, and so on.
Figure 2.16 – QoS in 5G
This connection determines the QoS experienced by the user. Consider a case in which the UE initiates an attach request to the network so that it can access the internet; what happens in the background is that a logical connection (or pipe) is created between the UE and the 5G network that carries the data flows associated with browsing the internet.
This logical connection is defined by attributes such as a QoS parameter. Certain PDU sessions require a guaranteed QoS, which must be provided by the network if the PDU session is accepted. Hence, the network must reserve resources for this kind of PDU session...
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