1 RAT FallBack in 5G SA 1.1 Introduction Similar to EPS FB, the 5G NR does not provide voice/video communication services at the initial stage. When the gNB establishes an…
5GS-WiFi(ePDG) Calling/Offloading Aspects
1 EPDG <-->5GS IMS Media (Voice/Video) Offloading 1.1 Introduction We already have seen about IMS Media Voice / Video etc offload to ePDG from EPS to seek better Quality coverage…
Emergency Services(E911) FallBack procedures in 5G
1.1 Emergency Services FallBack ES-FB 1.1.1 Introduction Service Request for emergency: This solution is new in 5GS, i.e., there is no equivalent in 4G. The UE uses service-request for emergency…
EPS Fallback Voice in 5G
1.1 Introduction Voice over NR with EPS Fallback includes an additional mobility trigger by which the UE falls back from NG-RAN to LTE during call establishment. This may be needed,…
5G Quality Of Services (QoS)
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The concept of QoS in 5G is flow based. Packets are classified and marked using QFI (QoS Flow Identifier). The 5G QoS flows are mapped in the AN (Access Network)…