name: HNB
full_form: Home NodeB
context: This event reports a when a registered target UE moves from a cell on the serving PLMN to a HNB, from a HNB to a cell on the serving PLMN, or from a HNB to another HNB. This event is generated when - a HNB GW receives an inbound UE relocation trigger (e.g., RANAP Relocation Request message from the Core Network), or - a HNB GW receives a HNBAP: UE RELOCATION COMPLETE message from the Destination HNB (i.e., the "Target HNB" per TS 25.467 [33]) , or - a HNB GW acts as a Iurh proxy and sends a RADIO LINK RESTORE INDICATION message from the "Drift HNB" to the "Serving HNB" per TS 25.467 [33]) (i.e., a target UE is involved in a soft handover between HNBs) The elements, shown in Table 13d, will be delivered to the DF2, if available. Table 13d: UE Handover NOTE 1: In a HNB GW, the CSG List is the Access Control List. NOTE 2: The soft handover between HNBs that are directly connected and the HNB GW is not involved is not part of 3GPP specifications.
description: Home NodeB (HNB) is a type of Network Function in the 3GPP specification, specifically designed for femtocell deployments. It acts as a small cell that provides indoor coverage and connects to the core network via a broadband connection.
explanation: The description explicitly states that HNB is a 'type of Network Function' within the 3GPP standard, outlining its purpose in femtocell deployments and its role as a small cell connecting to the core network. This clearly classifies it as a Network Function.
section_title: 13.4.4.4	Target UE HNB Handover
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biotag_Description: B-Network Function,I-Network Function,O,O,O,O,O,B-Network Function,I-Network Function,O,O,B-Organization,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