Network function deregistration in wireless communication networks

A wireless communication network configured to deregister network functions, the wireless communication network comprising:

• a Unified Data Registry (UDR) configured to receive a deregistration command that indicates a wireless User Equipment (UE) and forward the deregistration command to a Unified Data Management (UDM);
• the UDM configured to receive the indication, determine a Data Network Name (DNN) for the wireless UE, identify an Access and Mobility Management Function (AMF) and a Session Management Function (SMF) for the wireless UE based on the DNN, transfer a first deregistration notification to the AMF, transfer a second deregistration notification to the SMF, receive a deregistration acknowledgement from the AMF, and direct the UDR to remove stored session data for the SMF;
• the AMF configured to direct the wireless UE to deregister with the wireless communication network;
• the SMF configured to direct a User Plane Function (UPF) to stop serving the wireless UE;
• and
• the UDR configured to receive the direction from the UDM and responsively remove the stored session data for the SMF.