name: LBT
full_form: Listen Before Talk
context: Figure 5.7.3.1-1: SCG failure information The purpose of this procedure is to inform E-UTRAN or NR MN about an SCG failure the UE has experienced i.e. SCG radio link failure, beam failure of the PSCell while the SCG is deactivated, failure of SCG reconfiguration with sync, SCG configuration failure for RRC message on SRB3, SCG integrity check failure, and consistent uplink LBT failures on PSCell for operation with shared spectrum channel access.
description: Listen Before Talk (LBT) is a procedure utilized in the context of Shared Spectrum Channel Access, specifically concerning the Primary SCell (PSCell). It involves the User Equipment (UE) monitoring and assessing the channel before transmitting data. In the event of consistent uplink LBT failures on PSCell, this information is reported as part of the SCG failure information to inform E-UTRAN or NR MN about issues experienced by the UE.
explanation: LBT is categorized as a Procedure because it outlines a specific sequence of operations (listening and assessing the channel before transmission) that the User Equipment must follow in shared spectrum environments. The mention of 'consistent uplink LBT failures' within the context of SCG failure information highlights its procedural nature, focusing on how the UE handles and reports issues related to channel access.
section_title: 5.7.3 SCG failure information 5.7.3.1 General
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