Carrier Definition Tab (6GR)
The tab of the Signal Config tab defines the structure of the carrier definition referenced from the tab: its resource grid, bandwidth parts, physical channels and signals, CORESETs, and search spaces. All parameters are auto-coupled unless noted — see Auto and Manual Parameter Coupling. Importing a signal definition populates this tab automatically to match the imported signal (see Preset to Standard and Signal Definition Import/Export).
Common Parameters
These parameters, at the top of the tab, apply to the whole carrier definition:
Cell ID - The carrier definition's physical-layer cell identity. Used when the Carrier Mapping tab's Cell ID Source is From Definition.
Default: 0
Range: 0 to 1007
Frequency Range - The frequency range the carrier operates in. The frequency range determines the available channel bandwidths and numerologies.
- FR1 - Frequencies between 410 MHz Megahertz: A unit of frequency equal to one million hertz or cycles per second. and 7.125 GHz Gigahertz: A frequency measurement which equals one billion hertz..
- FR2-1 - Frequencies between 24.25 GHz and 52.6 GHz.
- FR3 - Frequencies between 7.25 GHz and 24.25 GHz.
Default: FR1
Choices: FR1, FR2-1, FR3
Channel Bandwidth - The carrier's base station channel bandwidth in MHz (per 3GPP TS Technical Specification 38.104 Table 5.3.5-1). The available choices depend on Frequency Range; a bandwidth that is not defined for the selected frequency range is replaced by that frequency range's default bandwidth.
Default: Auto — the default channel bandwidth for the selected frequency range (100 MHz for FR1). While the value is auto-coupled it changes whenever Frequency Range changes.
Choices (FR1): 3, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100, 200 MHz. Choices (FR2-1): 400, 800 MHz. Choices (FR3): 200, 400 MHz
Not every bandwidth pairs with every numerology — see Supported Numerology and Channel Bandwidth Combinations.
Link Direction - The carrier's link direction. The link direction determines which sub-tabs are shown below: a downlink carrier shows DL Down Link (forward link: from base station to cell phone)-BWP, SS/PBCH, PDSCH Physical Downlink Shared Channel, CORESET, SEARCHSPACE, and PDCCH; an uplink carrier shows UL Up Link (reverse link: from cell phone to base station)-BWP and PUSCH. The Resource Grid sub-tab is always shown.
Default: Downlink
Choices: Downlink, Uplink
Sub-Tabs
Below the common parameters, the carrier structure is organized into these sub-tabs:
- Resource Grid
- DL-BWP (downlink)
- UL-BWP (uplink)
- SS/PBCH (downlink)
- PDSCH (downlink)
- PUSCH (uplink)
- CORESET (downlink)
- SEARCHSPACE (downlink)
- PDCCH (downlink)
Instance Selectors
Most sub-tabs configure a collection of instances (multiple bandwidth parts, PDSCH allocations, CORESETs, and so on). A selector strip at the top of those sub-tabs shows one button per instance, labeled with the sub-tab's name followed by the instance number — , , , and so on; click a button to choose which instance the parameters below edit. The , , and buttons add an instance, remove the last instance, and reset the collection. The DL-BWP and UL-BWP collections hold between 2 and 5 bandwidth parts; the other collections keep at least their first instance.
The buttons are the exception: they are labeled with the 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. That is the number the SEARCHSPACE tab and 3GPP refer to.
Disabled Instances
On the sub-tabs whose instances can be switched off individually — DL-BWP, UL-BWP, SS/PBCH, PDSCH, PUSCH, and PDCCH — that instance's toggle is the first row of the tab. While the selected instance is disabled, every row below the toggle is grayed and cannot be edited. Turn the toggle back on to edit that instance's settings.
See Also
