name: PMSI
full_form: Pseudonymous Mobile Subscriber ID
context: completed successfully, the UE acknowledges the receipt of the next PMSI to the AUSF. The CP-CN/SEAF in the serving network can request the IMSI associated with the PMSI when it is required. Editorâs note: LI aspects in VPLMN are FFS. Figure 5.7.4.4.2-1. Attach procedure using PMSI The initial PMSI and PMSI derivation key (i.e., KPMSI) are installed at the UE and AUSF. The PMSI derivation key is used to confirm that the UE and AUSF have been synchronized with the next PMSI that would be used for the next attach. Editorâs Note: how to provision the initial PMSI and PMSI derivation key is FFS. 1. The UE sends an attach request using the PMSI to the network. When the CP-CN/SEAF receives the attach request message from the UE, it sends an authentication information request message to the AUSF where the authentication information request message includes PMSI and the serving network identifier. The AUSF identifies the IMSI that is associated with the PMSI and prepares an authentication
description: Pseudonymous Mobile Subscriber ID (PMSI) is a parameter used to identify a mobile subscriber in a pseudonymous manner, allowing for more secure and private communication. It is used in the attach procedure and is associated with an IMSI.
explanation: The context describes PMSI as a parameter used within the telecommunications network for subscriber identification and security during the attach procedure. This clearly classifies it as a parameter.
section_title: 5.7.4.4.2	Solution details
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biotag_Description: B-Parameter,I-Parameter,I-Parameter,I-Parameter,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O