name: USS
full_form: UE-specific Search Space
context: the CSS set with the lowest index in the cell with the lowest index containing CSS sets, if any; otherwise, to the USS set with the lowest index in the cell with lowest index, where the CSS set or the USS set includes searchSpaceLinkingId with same value as any CSS set or any USS set associated with CORESETs with qcl-Type set to first 'typeD' properties - the lowest USS set index is determined over all USS sets with at least one PDCCH candidate in overlapping PDCCH monitoring occasions If a UE - is configured for single cell operation or for operation with carrier aggregation in a same frequency band, - monitors PDCCH candidates in overlapping PDCCH monitoring occasions in multiple CORESETs that have been configured with same or different qcl-Type set to 'typeD' properties on active DL BWP(s) of one or more cells, - one or more CORESETs have two activated TCI states, and - reports sfn-QCL-TypeD-Collision-twoTCI the UE monitors PDCCHs only in a CORESET with a first qcl-Type set to
description: UE-specific Search Space (USS) is a parameter that defines a set of search spaces for a user equipment (UE) to monitor physical downlink control channels. It is used in conjunction with CORESETs and qcl-Type properties to determine the PDCCH candidates for the UE.
explanation: The context describes USS as a specific value used to define search spaces, indicating its role as a configurable attribute within the system.
section_title: 10.1UE procedure for determining physical downlink control channel assignment
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