5G NR Security overview and security key derivation
Below image is taken from TS 38.300 Legend: USIM: Universal Subscriber Identity Module ME: Mobile Equipment SEAF: SEcurity Anchor Function…
5G SA Core Network Procedure: 5G Core Network PDU Session Release Signaling Process
If the image is not visible clearly, open the image in new tab and zoom in the image. PDU Session Release procedure is used to release all the…
5G SA Core Network Procedure: 5G PDU Session establishment request
If the image is not visible clearly, open the image in new tab and zoom in the image. 1. PDU Session Establishment Request UE->AMF NAS…
5G SA Core Network Procedure: Network Triggered Service Request
If the image is not visible clearly, open the image in new tab and zoom in the image. This procedure is used when the network needs signalling…
5G SA Core Network Procedure: UE Triggered Service Request
If the image is not visible clearly, open the image in new tab and zoom in the image. UE in CM-IDLE mode will request service request…
5G SA Core Network Procedure: Network-initiated Deregistration Call Flow
If the image is not visible clearly, open the image in new tab and zoom in the image. 1: UDM -> AMF -> [Conditional] If the UDM wants to…
5G SA Core Network Procedure: UE-initiated Deregistration Call Flow
If the image is not visible clearly, open the image in new tab and zoom in the image. There are 2 types of deregistration requests: 1. UE to…
5G SA Core Network Procedure: Registration Call Flow with AMF re-allocation
If the image is not visible clearly, open the image in new tab and zoom in the image. Step 1: Registration Request UE –> RAN Step 2:…
5G SA Core Network Procedure: Registration Call Flow without AMF re-allocation
If the image is not visible clearly, open the image in new tab and zoom in the image. UE needs to register to the network to get the services…
5G SA Core Network Procedure: Registration Call Flow Radio Network only
In this chapter we shall see the message exchanges between UE, RAN and AMF. 1. When a UE is switched on, it will scan the available to perform…