5G NR UE Identities and Network Identities
5G NR UE Identities: 1. C-RNTI: Unique UE identity used to identify UE for RRC Connection and for scheduling. 2. CI-RNTI: It is used of…
5G Identity Exchange between UE and Network
The above diagram shows the identity exchanged between UE and Network. 1. During initial registration UE will encrypt SUPI in SUCI and send it…
5G Identities in detail Part 2
In this chapter we shall learn about: 1. 5G GUTI – 5G Globally Temporary Identifier 2. 5G S TMSI – It is a shorter version of 5G…
5G Identities in detail Part 1
UE in 5G network will have many identifiers to identify itself uniquely over the network. Below are some of them. In the next series of post,…
5G SA Core Network Procedure: AKA Authentication and Key Management Procedure
5G AKA procedure is required for UE to access the Network Services. UE needs to be authenticated before it is connected to the network. In 5G…
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…