name: UAS
full_form: User  Server
context: message, the UE shall send a CONFIGURATION UPDATE COMPLETE message. â¦ If the UE supporting UAS services is not currently registered for UAS services and the CONFIGURATION UPDATE COMMAND message includes the service-level-AA service status indication in the Service-level-AA container IE with the UAS field set to "UAS services enabled", then the UE passes the service-level-AA service status indication to the upper layers [TS 24.501, clause 5.5.2.1] The de-registration procedure is used: â¦ h) by the network to inform the UE supporting UAS service that it is deregistered for UAS services in 5GS. [TS 24.501, clause 5.5.2.3.1] The network initiates the de-registration procedure by sending a DEREGISTRATION REQUEST message to the UE (see example in figure 5.5.2.3.1.1). NOTE 1: If the AMF performs a local de-registration, it will inform the UE with a 5GMM messages (e.g. SERVICE REJECT message or REGISTRATION REJECT message) with 5GMM cause #10 "implicitly de-registered" only when the UE
description: The User Server (UAS) is a network function responsible for managing user-related services and configurations within the 5G core network. It interacts with the Access and Mobility Management Function (AMF) to handle user registration, de-registration, and configuration updates.
explanation: Based on its role in managing user services and configurations, and its interaction with other network functions like AMF, the UAS is classified as a Network Function according to 3GPP TS 38.523.
section_title: 9.1.4.2UAS / Generic UE configuration update / Revocation
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