name: ANDSF
full_form: Access Network Discovery and Selection Function
context: Figure 11: ANDSF security using GBA 1. The UE and the BSF will process bootstrapping procedure. The master key Ks will be derived in this procedure. Editorâs note: It is FFS if 3GPP AAA can be the BSF in this scenario to be easily deployed by the operator. 2. The UE discovers the ANDSF server. See more details in TS23.402. Then the UE derives the Ks_ANDSF. 3. The UE starts communication with ANDSF server. UE sends application request to ANDSF server. 4. ANDSF server sends authentication request to the BSF for the key, 5. The BSF derives the Ks_ANDSF based the master key Ks. The derivation function is the same with Ks_NAF. And then BSF sends Ks_ANDSF and the key lifetime to the ANDSF server. 6. ANDSF server will inform UE that it gets the key Ks_ANDSF and can continue the ANDSF function, 7. The UE and the ANDSF server establish the security association based on the Ks_ANDSF. The detailed method i.e. PSK TLS, can be referenced to TS24.109. Editorâs note: It is FFS which method can also
description: The Access Network Discovery and Selection Function (ANDSF) is a network function responsible for assisting the user equipment (UE) in discovering and selecting access networks, such as Wi-Fi or cellular networks. It plays a crucial role in enabling seamless handovers between different access technologies.
explanation: ANDSF is classified as a Network Function based on its role in managing access network discovery and selection for UEs, as described in the context from 3GPP TS 33.922.
section_title: 8.3.2 	Procedure
biotag_Context: O,O,B-Network Function,O,O,B-Technology,O,O,B-Device,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Item,O,B-Organization,B-Service,O,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,B-Device,O,O,B-Network Function,O,O,O,O,O,O,O,O,B-Device,O,O,O,O,O,B-Device,O,O,O,B-Network Function,O,B-Device,O,O,O,O,B-Network Function,O,O,B-Network Function,O,O,O,O,O,O,B-Network Function,O,O,O,O,O,B-Network Function,O,O,O,O,O,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-Network Function,O,O,B-Network Function,O,O,O,B-Device,O,O,O,O,O,O,O,O,O,O,B-Network Function,O,O,O,B-Device,O,O,B-Network Function,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,O,B-Item,O,O,O,O
biotag_Description: O,B-Network Function,I-Network Function,I-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,O,O,O,O,O,O,O,O,O,O,O,O,O