name: MBSSF
full_form: Multicast/Broadcast Service Security Function
context: in MBSSF or in UDM as part of MBS subscription data for a UE, which identifies the user service(s) that the UE is allowed to join. After receiving the HTTP POST message (see clause 6.3.2 of TS 33.246 [102]) that] includes the identifier(s) of MBS user service(s), MBSSF shall authorize the UE based on local configuration if available. If no local configuration is available, the MBSSF should send verification request with user id (e.g., IMPI in GBA or GPSI in AKMA) and identifier(s) of MBS user service(s) to UDM to acquire the authorization result. If the UE is authorized, the MBSSF registers the UE to the MBS user service(s). NOTE: the local configuration in MBSSF may be preconfigured or provided by AF.
description: The Multicast/Broadcast Service Security Function (MBSSF) is a network component responsible for managing security aspects of multicast and broadcast services. It handles user authentication, authorization, and registration to specific MBS user services.
explanation: MBSSF is classified as a Network Function based on its role in controlling access to multicast and broadcast services within the network, as highlighted by the context from 3GPP TS 33.501.
section_title: W.4.1.3	User-plane procedure
biotag_Context: O,B-Network Function,O,O,B-Network Function,O,O,O,B-Service,O,O,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,O,O,O,O,O,B-Protocol,O,O,O,O,O,O,B-Specification,O,O,O,O,O,O,O,B-Service,O,O,B-Network Function,O,O,O,B-Device,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,B-Parameter,O,B-Technology,O,B-Parameter,O,O,O,O,O,B-Service,O,O,O,B-Network Function,O,O,O,O,O,O,O,B-Device,O,O,O,B-Network Function,O,O,B-Device,O,O,B-Service,O,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,O,O
biotag_Description: O,B-Network Function,I-Network Function,I-Network Function,I-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Service,O,O