4A0-M10 Nokia 5G Packet Core Architecture Questions and Answers

Used to transfer bearer contexts from the master eNB to the secondary gNB.

Used to establish a UE context at the gNB for a UE that supports option 3X.

Used to establish connectivity from the gNB to the EPC.

Used to establish an X2 connection between the eNB and gNB.

SMF derives the QoS profile of a QoS Flow from a PCC rule and sends it to NG-RAN.

NG-RAN uses the QoS profiles to create mapping between QoS Flow IDs and data radio bearers.

NG-RAN sends the QoS profiles and corresponding QoS Flow IDs to the UE.

Each QoS profile includes a 5G QoS Identifier (5QI) and an Allocation and Retention Priority (ARP).

Allowed NSSAI is a set of slices provided to UE by AMF during UE registration procedure.

Requested NSSAI is a set of slices provided by UE to the network and contains values from serving PLMN.

Subscribed NSSAI is a set of slices specified in the UE subscription data and contains only home PLMN values.

Configured NSSAI is a set of slices configured on the AMF and contains slices supported per tracking area.