SEARCHSPACE (6GR)
The sub-tab of the Carrier Definition tab configures the PDCCH search spaces for a downlink carrier. A search space defines where and how often PDCCH candidates occur within a CORESET. Use the instance selector's , , and buttons to manage the collection (the first search space cannot be removed).
Search Space Type - Sets the search space type: UE User Equipment (e.g. cell phone) Specific (the CCE offset depends on the RNTI) or Common (the CCE offset is not RNTI-dependent).
Default: UE Specific
Choices: UE Specific, Common
CORESET ID - Selects the CORESET this search space uses. Each choice shows the CORESET's BWP, numerology, and RB count — for example, . The choices are the CORESET IDs actually defined on this carrier.
Default: 1
First Symbol - Sets the first symbol of the search space within a slot.
Default: 0
Range: 0 to 13
Candidates L1 / L2 / L4 / L8 / L16 - Set the number of PDCCH candidates at each aggregation level. The levels are paired across three rows: , , and .
Default: 4 for each level
Range: 0 to 8 for each level
Allocated Slots - Sets the slots this search space occurs in, as a list or range.
Default: Auto — slot 0 only
Slot Format - Sets the slot format for the search space's slots. Each format index names the direction of all 14 symbols in the slot (D downlink, U uplink, F flexible) per 3GPP TS Technical Specification 38.213 Table 11.1.1-1, and the choice list spells the pattern out — for example, is all downlink and is all uplink.
Default: 0 (all downlink)
Choices: formats 0 to 61 per 3GPP TS 38.213 Table 11.1.1-1 (56 to 61 are reserved)
Frame Period - Sets the search space's repetition period in frames.
Default: 1
Range: 1 to 10
See Also
