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)
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)…