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Connection Management is used to establish and release the signalling connection between UE and AMF. CM mainly deals with establishing and releasing a NAS signalling connection between UE and AMF over N1. There are 2 CM states to reflect NAS signalling connection of the UE with …

Registration Management is used to register or deregister UE to the network and create a user context in the network. We know that UE needs to register to the network to get the services from the network. There are 2 RM states used in UE and …

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. 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.   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 …