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 resources associated with a PDU Session. 1a. PDU Session Release Request -> (UE requested) The UE initiates the …
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 Message ( S-NSSAI(s), UE Requested DNN, PDU Session ID, Request type, Old PDU Session ID, N1 SM container ( PDU Session …
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 connection with a UE. Step 1: -> When a UPF receives downlink data for a PDU session and there …
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 procedure to establish a secure connection to AMF. UE in CM-IDLE and in CM-CONNECTED mode will initiate service request procedure …
If the image is not visible clearly, open the image in new tab and zoom in the image. 1: UDM -> AMF -> If the UDM wants to request the immediate deletion of a subscriber’s RM contexts and PDU Sessions, the UDM shall send a Nudm_UECM_DeregistrationNotification …
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 NW, if UE does not want to access the 5GS any longer. 2. NW to UE, to inform …
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: AMF selection If 5G-S-TMSI or GUAMI is not included or it does not indicate a valid AMF, then …
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 from the network. Below are the different registration types: 1. Initial Registration 2. Mobility registration update …
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 cell search and cell selection procedure. 2. For that it will decode the CEll ID and PBCH …
SSC: Session and Service Continuity Mode SSC is used to support multiple continuity requirements. SSC is associated with PDU session and will not change during the lifespan of a PDU session. It means, if a PDU connection is set to SSC mode-x, then it will not …