CORESET (6GR)
The sub-tab of the Carrier Definition tab configures the control-resource sets for a downlink carrier. A CORESET defines the resource blocks and symbols the PDCCH can occupy; search spaces reference CORESETs by ID. Use the instance selector's , , and buttons to manage the collection (the first CORESET cannot be removed).
The instance selector buttons are labeled with each CORESET's CORESET ID rather than its position in the collection, so is the CORESET whose ID is 1 wherever it sits in the list.
CORESET ID - Sets the CORESET ID (controlResourceSetId) for the selected CORESET. The choices exclude IDs already used by other CORESETs on this carrier.
Default: the instance index plus 1
Range: 1 to 11
BWP ID - Selects the DL-BWP this CORESET belongs to. Each choice shows the BWP's numerology and RB count.
Default: 1
Number of Symbols - Sets the number of symbols the CORESET occupies.
Default: 1
Choices: 1, 2, 3
Alloc RB Groups - Sets the RB groups allocated to the CORESET (6 RBs per group), as a list or range (for example, ).
Default: Auto — all RB groups that fit the bandwidth part
CCE-to-REG Mapping - Sets the CCE-to-REG mapping type. A CCE (control-channel element) is made up of six REGs (resource-element groups); this mapping controls how those REGs are distributed across the CORESET's resource blocks and symbols. See 3GPP TS Technical Specification 38.211 for interleaved and non-interleaved mapping.
Default: Non-Interleaved
Choices: Non-Interleaved, Interleaved
REG Bundle Size - Sets the REG bundle size, used when the mapping is Interleaved.
Default: 6
Range: 1 to 6
Interleaver Size - Sets the interleaver size, used when the mapping is Interleaved.
Default: 2
Range: 1 to 3
Shift Index - One row holding a source selector and a value. The selector determines whether the interleaver shift index is derived from the physical cell ID (Cell ID) or taken from the value entered beside it (From RRC, emulating provision by higher-layer signaling). The value is a dimmed read-back unless the selector reads From RRC.
Default: source From RRC, shift index 0
Choices (source): Cell ID, From RRC. Range (shift index): 0 to 274
Precoder Granularity - Sets the frequency-domain precoding granularity: Same As REG Bundle or All Contiguous RBs (precoding spans all contiguous resource blocks).
Default: Same As REG Bundle
Choices: Same As REG Bundle, All Contiguous RBs
DMRS Scrambling ID - One row holding a source selector and a value, setting the PDCCH DMRS scrambling ID used for sequence generation. The selector chooses whether the identity is derived from the cell ID (Cell ID) or taken from the value entered beside it (From RRC). The value is a dimmed read-back unless the selector reads From RRC.
Default: source Cell ID, scrambling ID 0
Choices (source): Cell ID, From RRC. Range (scrambling ID): 0 to 65535
CORESET 0 always uses the cell ID, so for that CORESET the selector is fixed at Cell ID and the value is read-only (3GPP TS 38.211 section 7.4.1.3.1).
CORESET0 RB Offset / Number - One row holding two values for CORESET 0. CORESET0 RB Offset sets its RB offset, and CORESET0 RB Number the number of resource blocks it occupies.
Default: offset 0, RB number 24
Range: offset 0 to 95; RB number 1 to 96
RB Offset - One row holding a value and a Configured toggle, setting the Release 16 RB offset (the field of 3GPP TS 38.331's control resource set). This is distinct from CORESET0 RB Offset. The value applies only while Configured is selected. The row is shown only for CORESETs other than CORESET 0.
Default: Configured cleared, offset 0
Range (offset): 0 to 5
See Also
