Resource Grid (6GR)
The sub-tab of the Carrier Definition tab defines the carrier's overall resource grid. It is shown for both downlink and uplink carriers.
Numerology - Sets the carrier's numerology. Numerology specifies the subcarrier spacing (and cyclic prefix definition) and affects symbol duration and the number of resource blocks possible for a given channel bandwidth. Only the normal cyclic prefix is supported.
- µ = 0 : 15 kHz kiloHertz: A radio frequency measurement (one kilohertz = one thousand cycles per second). - 15 kHz subcarrier spacing. Used for FR1 below 7 GHz Gigahertz: A frequency measurement which equals one billion hertz..
- µ = 1 : 30 kHz - 30 kHz subcarrier spacing. Used for FR1 and FR3.
- µ = 2 : 60 kHz - 60 kHz subcarrier spacing. Used for FR3.
- µ = 3 : 120 kHz - 120 kHz subcarrier spacing. Used for FR2 mmW.
Default: Auto — µ = 1 : 30 kHz for FR1, and otherwise the lowest numerology defined for the carrier's frequency range and channel bandwidth (µ = 3 for FR2-1)
Choices: depend on the Frequency Range — FR1: µ = 0, µ = 1; FR2-1: µ = 3; FR3: µ = 1, µ = 2, µ = 3
The numerology choices are not narrowed by the carrier's Channel Bandwidth, so it is possible to select a numerology that the current frequency range and channel bandwidth do not define together — for example µ = 0 on a 200 MHz Megahertz: A unit of frequency equal to one million hertz or cycles per second. FR1 carrier. Such a selection is replaced by the lowest numerology that is defined for the current frequency range and channel bandwidth. See Supported Numerology and Channel Bandwidth Combinations.
RB Offset - Sets the resource grid's RB offset. A resource block (RB) consists of 12 contiguous subcarriers.
Default: 0
Range: 0 to (maximum grid size minus 1), where the maximum grid size depends on the frequency range, channel bandwidth, and numerology. A larger value is clamped to that maximum.
RB Number - Sets the number of resource blocks in the grid.
Default: Auto — the largest legal RB count for the carrier's frequency range, channel bandwidth, and numerology, less the RB offset (273 for a 100 MHz FR1 carrier at 30 kHz SCS)
Range: 1 to the maximum grid size less the RB offset. A larger value is clamped to that maximum.
Ref. Point A - (Read-only) Reports the location of reference point A, the frequency this resource grid is positioned relative to: its absolute frequency and its offset from the measurement center. With the default carrier configuration (100 MHz FR1, µ = 1) this reads 49.14 MHz from center at 1 GHz.
The absolute frequency comes from the carrier mapping's Phase Compensation Freq when that mapping's source is Manual, and from the measurement center frequency otherwise. Because more than one carrier mapping can reference the same carrier definition, each with its own compensation setting, there may be no single reference point A for this grid; when the mappings disagree, every value is listed — for example, .
Supported Numerology and Channel Bandwidth Combinations
A carrier's Frequency Range, Channel Bandwidth, and Numerology are defined together only in the combinations listed below. Selecting a combination outside this set replaces the numerology with the lowest one defined for the current frequency range and channel bandwidth.
|
Frequency Range |
Numerology |
Channel Bandwidth |
|---|---|---|
|
FR1 |
µ = 0 : 15 kHz |
3, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100 MHz |
|
FR1 |
µ = 1 : 30 kHz |
5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100, 200 MHz |
|
FR2-1 |
µ = 3 : 120 kHz |
400, 800 MHz |
|
FR3 |
µ = 1 : 30 kHz |
200, 400 MHz |
|
FR3 |
µ = 2 : 60 kHz |
200, 400 MHz |
|
FR3 |
µ = 3 : 120 kHz |
200, 400 MHz |
See Also
