name: MAG
full_form:  Access Gateway
context: One possible way is to have the mapping between the UE and the serving MAG in one of network servers. When a MAG sends a PBU to a LMA, the LMA can ask this server to check whether this MAG is currently serving the UE. In this way, it will be avoided that a compromised MAG represents UE served by other MAGs to send the fake PBU. UE should run an EAP-AKA with MAG before PMIPv6 procedure. The AAA server in UEâs home network can record which MAG executed EAP-AKA procedure. In the meanwhile, AAA can keep the mapping between UE and its serving MAG. In this way, when a MAG sends a PBU message to a LMA, the LMA can ask the AAA server to have a check whether this MAG is serving the UE in the current time according to the identity of UE in PBU message. When UE moves to other MAG, AAA should know the change since AAA will be involved in changing MAGâs procedure. So the AAA can update the mapping between UE and the serving MAG. Editorâs Note: Another solution is that AAA sends a key to MAG which
description: The Mobile Access Gateway (MAG) is a network function responsible for managing user equipment (UE) access and mobility in a network, particularly in the context of Proxy Mobile IPv6 (PMIPv6) procedures. It interacts with other network functions such as the Local Mobility Anchor (LMA) and Authentication, Authorization, and Accounting (AAA) servers to ensure secure and seamless connectivity for UEs.
explanation: MAG is classified as a Network Function based on its role in managing UE access and mobility within the network, as highlighted by the context. The text from 3GPP TS 33.922 describes MAG's involvement in PMIPv6 procedures, EAP-AKA authentication with UEs, and interactions with LMA and AAA servers to validate its classification as a Network Function.
section_title: 7.4.1.6.2	Possible measures
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biotag_Description: O,O,B-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,B-Protocol,I-Protocol,I-Protocol,O,O,O,O,O,O,O,O,O,O,O,B-Network Function,I-Network Function,I-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O