Page 418 - 5G Basics - Core Network Aspects

1 Core network aspects

I.4 UE initiated network selection

This scenario shows that an eMMTel UE can automatically select the best connections available based on
configured policy, and activate them accordingly.
Alice initiates a voice call with Bob and the UE can choose the CS connection automatically as the CS
connection has a higher QoS assurance. When Alice initiates content sharing or file transfer with Bob, the UE
will automatically choose the PS connection or WLAN connection based on the configured policy.

Figure I.4 – Scenario of UE initiated network selection

I.5 Network initiated network selection

This scenario shows that an eMMTel UE supports the best available connection selected by the network.
When a voice call is established between Alice and Bob, and Alice initiates content sharing or file transfer
with Bob, the network can provide Bob with high bandwidth and lower charges in the connection, based on
the configured policy.

Figure I.5 – Scenario of network initiated network selection

I.6 Service transfer

This use case shows that the service can be moved among multiple connections according to policy.
Alice launches a voice call through a WLAN connection, and shares video through the 3G connection at the
same time. Then she starts a file transfer through the WLAN connection. She feels the WLAN connection

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