nrCellDU
The nrCellDU table models a geographical area of radio coverage that is implemented and supported by physical radio equipment for 5G NR GNB devices, such as towers, amplifiers, and antennas. These are contained in GNBDU Functions.
The following table describes the nrCellDU table.
| Column name | Type | Constraints | Description |
|---|---|---|---|
| entityId | Integer | FOREIGN KEY NOT NULL |
The identifier of an nrCellDU entity from the entityData
table. |
| nRCellName | 64-character string | NOT NULL | Cell identifier or name of the cell. |
| emsDistinguishedName | 255-character string | Distinguished name by which the nrCellDU is known to its element management system (EMS). | |
| nRCellId | 64-character string | NOT NULL | Uniquely identifies a cell within a PLMN. It is often constructed from gNodeB ID + Physical Cell ID. |
| nRCellState | 10-character string | Represents the active state of the cell. Takes one of the following values:
|
|
| TAI | 64-character string | NOT NULL | Tracking Area Identifier (TAI). This is a globally unique tracking area identifier, made up of the PLMN ID and the TAC. |
| channelBandwidthUl | Float | Uplink channel bandwidth. | |
| channelBandwidthDl | Float | Downlink channel bandwidth. | |
| maximumOutputPower | Float | Maximum power in Watts for the sum of all downlink channels that are allowed to be used simultaneously in a cell. | |
| userCapacity | Integer | Maximum number of pieces of user equipment (UEs) that can connect to this nrCellDU simultaneously. | |
| physicalCellID | Integer | Physical cell identifier. Takes a value in the range 0 to 503. The physical
cell id is used by the cell to encode and decode the data that it transmits. It is used in a similar
way to the UMTS scrambling code. To avoid interference, neighboring cells should have different
physical cell identifiers. The physical cell id is derived from the primary and secondary
synchronization signals (PSS and SSS). The PSS takes a value from 0 to 2, the SSS takes a value from
0 to 167, and the physical cell id is determined based on the following
formula: |
|
| localCellId | Integer | Local cell id unique within the nrCellDU. | |
| arfcnDl | Integer | Absolute Radio Frequency Channel Number (downlink). An integer value which identifies the downlink carrier frequency of the cell. | |
| arfcnUl | Integer | Absolute Radio Frequency Channel Number (uplink). An integer value which identifies the uplink carrier frequency of the cell. | |
| nRPCI | 64-character string | Holds the Physical Cell Identity (PCI) of the NR cell | |
| ssbFreq | Float | Indicates cell defining SSB frequency domain position. Frequency of the cell
defining SSB transmission. The frequency provided in this attribute identifies the position of
resource element. The frequency shall be positioned on the NR global frequency raster, and within
bSChannelBwDL. Allowed values: 0..3279165 |
|
| ssbPeriodicity | Integer | Indicates cell defined SSB periodicity in number of subframes(ms). The SSB
periodicity in msec is used for the rate matching purpose. Allowed values: 5, 10, 20, 40, 80, 160 |
|
| ssbSubCarrierSpacing | Integer | This SSB is used for synchronization. Its units are in kHz. Allowed values:
{15, 30, 120, 240}
Note: The allowed values of SSB used for representing data. For example, a BWP is
15, 30, 60 and 120 in units of kHz.
|
|
| operationalState | 10-character string | Operational state of the nrCellDU. Takes one of the following values:
|
|
| administrativeState | 13-character string | Administrative state of the nrCellDU. Takes one of the following values:
|