Downlink Channel Setup

The downlink carrier includes the following channels:

SS/PBCH
DCI
DL-SCH
CSI-RS
PRS
LTE Coexistence

SS/PBCH

1. SS/PBCH Block

Name

Set the name for the channel. The channel name is used for DCI/DL-SCH/UCI/UL-SCH Configurations.

Enabled

Enable or disable the channel or signal in a radio frame.

Numerology

For Single Numerology mode, this parameter is read-only and automatically coupled with the numerology under carrier node. For Multiple Numerologies mode, this parameter is editable, the choices are based on the FR1 or FR2.

SS Block Pattern

Select the SS Block Pattern, it is automatically coupled for subcarrier spacing 15k/120/240 cases, and it is selectable for subcarrier spacing 30k case.

Periodicity

Choices: 5ms | 10ms | 20ms | 40ms | 80ms | 160ms

Default: 5ms

Select the SSB periodicity.

Half Frame Index

Range: 0 to 1

Default: 0

Set the SSB location to the first half frame or the second half frame when SSB period is not 5ms.

Lmax

Choices: 4 | 8 for u=0 and u=1; 64 for u=3 and u=4

Default: 4

Select the Lmax of SSB.

Active Indices

Set the active indices of the SSB. There are 3 ways to configure:

To configure by individual index, use ',' as the delimiter, e.g. 0,1,2,3.
To configure by a range of index, use ':' to indicate the start index and the last index, e.g. 3:10 means 3,4,5,6,7,8,9,10.
To configure by a certain step, use two ':' to indicate the start index, the step and the last index, e.g. 0:4:12 means 0, 4, 8, 12.

These 3 configuration methods can be used in combination, by using ',' as the delimiter, e.g. 0,1,4:7,8:2:19 means index 0,1,4,5,6,7,8,10,12,14,16,18.

Power Boosting of each SS Block

Range: -40 to 40dB

Default: 0dB

Bring up the power boosting editor to set the power boosting for each active SS Block. SS/PBCH does not have a single value of power boosting, instead, there is a table to set the power boosting for each SS block. The value of non-active SS Blocks are grayed out

PSS Power Boosting

Range: -40 to 40dB

Default: 0dB

Set the PSS power boosting relative to SSS or PBCH.

RB Offset by 15kHz SCS

Set the RB offset of SSB relative to CRB0, it is expressed in terms of 15kHz for µ=0 and µ=1, and 60kHz for µ=3 and µ=4.

To avoid some unclear case, some limitation for k0:

For the case of 30kHz SSB, k0 can only be an even number.
For the case of 120kHz SSB, k0 can only be an even number.
For the case of 240kHz SSB, k0 can only be multiple of 4.

The range is based on the max RB and numerology of the carrier.

When the numerology of carrier is changed, RB Offset and k0 are automatically updated to ensure the SSB is in the middle of carrier for the new numerology.

kSSB by 15kHz SCS

Range: 0 to 23 for u=0 and u=1; 0 to 11 for u=3 and u=4.

Default: 0

Set the kSSB for SS/PBCH. For the case of 30kHz or 120kHz SSB, kSSB can only be an even number, for the case of 240kHz SSB, kSSB can only be multiple of 4.

When the numerology of carrier is changed, RB Offset and k0 are automatically updated to ensure the SSB is in the middle of carrier for the new numerology.

Delta Frequency of Carrier Center

Set the relative location of SS/PBCH center in Hz directly compared to the CC center, and it will be coupled with RB Offset and kSSB in two-way.

2. NR-PBCH

Channel Coding

Choices: On | Off

Default: On

Enable or disable transport layer channel coding.

Scrambling Before Channel Coding

Choices: On | Off

Default: On

Enable or disable the scrambling before channel coding for PBCH.

Scrambling After Channel Coding

Choices: On | Off

Default: On

Enable or disable the scrambling after channel coding for PBCH.

Auto MIB

Choices: On | Off

Default: On

Set whether MIB is generated automatically, when enabled, the contents under Master Information Block will be included in the payload data. If it is set to Off, Payload Data is editable and you can set PBCH contents manually.

Auto MIB is disabled when channel coding is off.

Payload Data

Choices: PN9 | PN15 | PN23 | PN31 | Custom Bit Pattern | User File

Default: PN9

Brings up the Closed Data Setup payload editor to select the data bits used for the channel payload.

Payload Data Length

Display the MIB length before channel coding.

SFN Start

Range: 0 to 1023

Default: 0

Set the SFN for the first generated frame, the SFN will be increased for multiple frames case.

Master Information Block (MIB)

Display the SS/PBCH payload bits when Auto MIB is enabled, it is generated by the MIB contents of each fields, and all the unlisted fields of MIB are set to 0.

subcarrierSpacingCommon (RMSI-scs)

Choices: 15,000 | 30,000 for FR1; 60,000 | 1,20,000 for FR2.

Default: 30,000

Set the subcarrierSpacingCommon value in MIB content, it is read-only for Single Numerology mode.

This parameter will determine the numerology of Initial downlink BWP if Initial downlink BWP is set to Auto Configuration.

ssb-SubcarrierOffset

Range: 0 to 31

Default: 0

This parameter corresponds to kSSB. When kSSB changes, it will be equal to kSSB, but you can manually modify it to a value larger than 23.

The 4 least significant bits of kSSB are in the MIB contents, and the most significant bit of kSSB is in the PBCH payload.

dmrs-TypeA-position

Choices: 2 | 3.

Default: 2

Set the value of dmrs-TypeA-position in MIB content.

pdcch-ConfigSIB1 (RMSI-PDCCH-Config)

Range: 0 to 255

Default: 0

Set the value of pdcch-ConfigSIB1 (RMSI-PDCCH-Config) in MIB content, which is used to determine the location of Initial downlink BWP, see more information in section 13 of 38.213.

cellBarred

Choices: 0: barred | 1: notBarred

Default: 0: barred

Set the value of cellBarred in MIB content.

intraFreqReselection

Choices: 0: allowed | 1: notAllowed

Default: 0: allowed

Set the value of intraFreqReselection in MIB content.

DCI

1. General Settings

Name

Set the name for the channel. The channel name is used for DCI/DL-SCH/UCI/UL-SCH Configurations.

Enabled

Enable or disable the channel or signal in a radio frame.

Power Boosting

Range: -40 to 40dB

Default: 0dB

Set the additional power boosting for the channel.

DMRS PowerBoosting

Range: -40 to 40dB

Default: 0dB

Set the DMRS power boosting relative to data part.

Scrambling

Enable or disable the scrambling for the channel.

PDCCH-DMRS-Scrambling-ID

Range: -1 to 65535

Default: Not Configured.

Set the PDCCH-DMRS-Scrambling-ID for sequence generation, enter -1 means Not Configured.

RNTI

Set the RNTI for the channel.

C-RNTI

Range: 0 to 65535

Default: 0

Set the C-RNTI for a PDCCH, used for the following:

Scrambling in UE-specific search space if the pdcch-DMRS-ScramblingID is configured
CCE offset calculation in UE-specific search space if it is not 0

DMRS Mapping Reference

Display the DMRS mapping reference of DCI, CORESET0 is selected if DCI is transmitted in CORESET0, otherwise CRB0 is selected, see section 7.4.1.3.2 of TS38.211 for more information.

2. Resource Allocation

Time domain: Use Allocated Slots to set slot allocation, and the symbol allocation is determined by the CORESET selection.
Frequency domain: Select BWP first, and then CORESET index in the BWP. After selecting CORESET index, use CCE offset and CCE number to set the frequency location of DCI.

CORESET Selection

Choices: All the CORESETS in all the BWPs

Default: BWP1_CORESET1

Select the CORESET to be used for DCI transmission.

Allocated Slots

Set the allocated slot index for the channel. There are 3 ways to configure:

To configure by individual index, use ',' as the delimiter, e.g. 0,1,2,3.
To configure by a range of index, use ':' to indicate the start index and the last index, e.g. 3:10 means 3,4,5,6,7,8,9,10.
To configure by a certain step, use two ':' to indicate the start index, the step and the last index, e.g. 0:4:12 means 0, 4, 8, 12.

These 3 configuration methods can be used in combination, by using ',' as the delimiter, e.g. 0,1,4:7,8:2:19 means index 0,1,4,5,6,7,8,10,12,14,16,18.

First Symbol

Default: 0

Display the first symbol index for the DCI transmission, the symbol number of DCI is defined in selected CORESET.

Search Space

Choices: UE-Specific | Common

Default: UE-Specific

Select the search space type of current PDCCH.

Aggregation Level

Choices: 1 | 2 | 4 | 8 | 16

Default: 4

Set aggregation level for current PDCCH.

The choices may be limited by the total number of CCE of selected CORESET.

Number of PDCCH Candidates

Choices: 1 | 2 | 3 | 4 | 5 | 6 | 8

Default: 4

Set the number of PDCCH candidates to calculate the CCE Offset.

Candidate Index

Range: -1 to Number of PDCCH Candidates - 1.

Default: 0

Set candidate index of the search space which the PDCCH is located.

If Candidate Index is set to -1, then user can input CCE Offset manually, but only one CCE Offset value is accepted.

CCE Offset

Set the CCE offset indicating where DCI starts from.

The range is based on the selected CORESET settings. For UE-specific search space and if RNTI is not 0, the CCE Offset is different for each slot with each value corresponding to one slot. If Candidate Index is set to -1, you can input CCE Offset manually, but only one value is accepted.

3. DCI Payload Data

Channel Coding

Choices: On | Off

Default: On

Enable or disable transport layer channel coding.

Auto DCI

Choices: On | Off

Default: Off

Enable or disable Auto DCI, when enabled, you can edit each fields for DCI contents.

DCI Format

Choices: Format 0_0 | Format 0_1 | Format 1_0 | Format 1_1

Default: Format 1_0

Select the DCI format.

RNTI Type

Choices: based on the selected DCI format.

Default: C-RNTI/CS-RNTI/new-RNTI

Select the RNTI Type.

DL-SCH Couplings

Choices: based on the DL-SCH list

Default: None

Set which DL-SCH is coupled with current DCI.

If DCI is coupled with a DL-SCH, after any changes on the DL-SCH side, scheduling information will be automatically filled into DCI field, and RNTI, allocated slots and BWP selection are also coupled with DL-SCH.

DCI Bits

Displays the number of DCI bits. Click to open the DCI Fields Closed editor to set each field of DCI, based on the selected DCI format and RNTI type.

Payload Data

Choices: PN9 | PN15 | PN23 | PN31 | Custom Bit Pattern | User File

Default: PN9

Brings up the Closed Data Setup payload editor to select the data bits used for the channel payload.

Payload Size

Range: 1 to (CCE Number * 108 - 24)

Default: 20

Set the DCI payload size before channel coding.

DL-SCH

1. General Settings

Name

Set the name for the channel. The channel name is used for DCI/DL-SCH/UCI/UL-SCH Configurations.

Enabled

Enable or disable the channel or signal in a radio frame.

Power Boosting

Range: -40 to 40dB

Default: 0dB

Set the additional power boosting for the channel.

Scrambling

Choices: On | Off

Default: On

Enable or disable the scrambling for the channel.

RNTI

Range: 0 to 65535

Default: 0

Set the RNTI for the channel.

n_ID

Range: -1 to 1023

Default: Cell ID

Set the n_ID for sequence generation, -1 means cell ID.

2. Transmission Settings

DMRS port(s)

Set the DMRS port(s) used for the transmission of this channel, multiple values input are allowed, such as 0,1,2,3, or 0:3, the Number of layers is automatically coupled with the number of DMRS ports.

Number of Layers

Default: 1

Display the number of layers for DL-SCH, it is automatically coupled with the DMRS port(s).

Number of Antenna Ports

Display the number of Antenna Ports used for transmission, it is automatically coupled with the Antenna Port Set.

Antenna Port Generated

Use this Closed drop-down menu to choose the desired option.

Enter a comma-separated string or click drop down arrow to set the mapping between physical antennas and logical antenna ports, the number of physical antennas is under Waveform Setup node.

The logical antenna ports are expressed as p0, p1, ....

Number of Codewords

Only one codeword is supported, so the maximum number of antenna ports is 4.

Number of DMRS CDM groups without data

Set the number of DMRS CDM groups without data, which is used to determine how many resource elements are reserved for DMRS. When this parameter changes, the DMRS power boosting is automatically coupled based on the table 4.1-1 of 38.214.

3. Resource Allocation

Time domain: Use Allocated Slots to set slot allocation, and the symbol allocation is determined by the CORESET selection.
Frequency domain: Select BWP first, and then CORESET index in the BWP. After selecting CORESET index, use CCE offset and CCE number to set the frequency location of DCI.

Allocated Slots

Range: 0 to number of slots in a frame for current numerology -1

Set the allocated slot index for the channel. There are 3 ways to configure:

To configure by individual index, use ',' as the delimiter, e.g. 0,1,2,3.
To configure by a range of index, use ':' to indicate the start index and the last index, e.g. 3:10 means 3,4,5,6,7,8,9,10.
To configure by a certain step, use two ':' to indicate the start index, the step and the last index, e.g. 0:4:12 means 0, 4, 8, 12.

These 3 configuration methods can be used in combination, by using ',' as the delimiter, e.g. 0,1,4:7,8:2:19 means index 0,1,4,5,6,7,8,10,12,14,16,18.

First Symbol

Range: 0 to 13 for Normal CP; 0 to 11 for Extended CP

Default: 0

Set the first symbol index for the transmission.

Last Symbol

Range: FirstSymbol to 13 for Normal CP; FirstSymbol to 11 for Extended CP.

Default: 13

Set the last symbol index for the transmission.

Bandwidth Part

Select a bandwidth part to be used for transmission, all the BWP names defined under BWP Setup node will be list here.

RA Type

Choices: Type0 | Type1

Default: Type1

Set the resource allocation type for the transmission.

RB Offset

Choices: Type0 | Type1

Default: Type1

Set the RB offset relative to selected BWP, it is used for RA Type1.

RB Number

Range: 1 to RB Number of BWP - RB Offset

Default: 273

Set the RB number used for transmission, it is used for RA Type1.

VRB-to-PRB Mapping

Choices: Non-Interleaved | Interleaved

Default: Non-Interleaved.

Coupling: Read-only for RA Type 0

Select the VRB to PRB mapping type.

PRB Bundle Size

Choices: 2 | 4 | Wideband

Default: Wideband

Set the PRB Bundle Size of DL-SCH.

CORESET ID For RateMatching

Choices: All the CORESET ID of current BWP will be listed here

Default: None

Select the CORESET ID of current BWP for DL-SCH rate matching.

RateMatchPattern(s)

Click the button to pen the Rate Match Pattern editor to set the rate match patterns.

Although RateMatchPattern is a cell level or BWP level settings, the RateMatchPatterns defined under each DL-SCHs are only applied to current DL-SCH.

4. Modulation and Coding

Channel Coding

Choices: On | Off

Default: On

Enable or disable transport layer channel coding.

MCS Table

Choices: Table 5.1.3.1-1 | Table 5.1.3.1-2

Default: Table 5.1.3.1-1

Select which table to use for the TB size calculation.

MCS

Range: 0 to 27 or 28

Default: 0

Set MCS index for the channel.

xOverhead

Choices: 0 | 6 | 12 | 18

Default: 0

Set the xOverhead parameter (N_oh_PRB) to calculate to TB size.

TB Scaling Factor S

Choices: 1 | 0.5 | 0.25

Default: 1

Set the TB Scaling Factor (S) to calculate to TB size.

Coding Rate

Display the coding rate of the channel. It is automatically updated by MCS index change.

Modulation

Default: QPSK

Display the modulation type of the channel. It is automatically updated by MCS index change.

Transport Block Size

Display the transport block size of the channel. It is automatically updated by MCS index change and is calculated based on the MCS Index and the formula in 5.1.3 of 38.214.

The Xoh-PDSCH parameter is assumed to 0.

Base Graph

Display the base graph of the channel. It is automatically updated by MCS index change.

Payload Data

Choices: PN9 | PN15 | PN23 | PN31 | Custom Bit Pattern | User File

Default: PN9

Brings up the Closed Data Setup payload editor to select the data bits used for the channel payload.

5. HARQ Settings

New Data Indicator

Default: 0

Sets the New Data Indicator for this DL-SCH. Enter -1 means that the New Data Indicator is auto generated based on the HARQ Process Number.

Example: If there are 10 slots for a DL-SCH, and New Data Indicator set to -1, and the HARQ Process Number set to 0:3, then the HARQ ID for these 10 slots will be 0,1,2,3,0,1,2,3,0,1; and the NDI for these 10 slots will be 0,0,0,0,1,1,1,1,0,0.

HARQ Process Number

Default: 0

Sets the HARQ Process Number used for the transmission of this channel. Multiple values input are allowed, such as 0,1,2,3, or 0:3, then they are applied to different slots.

RV index

Range: 0 to 3

Default: 0

Set the RV Index.

CBG Transmission

Default: Off

Enable or disable CBG transmission.

Max CBGs Per TB

Choices: 2 | 4 | 6 | 8

Default: 8

Set the maxCodeBlockGroupsPerTransportBlock when CBG transmission is enabled.

CBG Transmission Information

Default: 11111111

Enter an one-zero string to set the CBG ransmission information for re-transmission with CBG transmission enabled, the length of string is MaxCBGsPerTB.

For initial transmission, it is fixed to all one.

CRC Error Flag per CBG

Default: 00000000

Enter an one-zero string to set the whether CRC error is inserted for current TB or CBG. For CBG transmission enabled, the length of string is MaxCBGsPerTB, for CBG transmission disabled, the length of string is 1.

CRC Error Flag

Default: 00000000

6. DMRS Settings

DMRS-Downlink-r16

Choices: On | Off

Default: Off

Set whether higher-layer parameter DMRS-Downlink-r16 is provided.

n_SCID

Range: 0 to 1

Default: 0

Set the n_SCID for sequence generation.

N_ID_0

Range: -1 to 65535

Default: Cell ID

Set the N_ID_nSCID (N_ID_0 or N_ID_1) for sequence generation, enter -1 means cell ID.

N_ID_1

Range: -1 to 65535

Default: Cell ID

Set the N_ID_nSCID (N_ID_0 or N_ID_1) for sequence generation, enter -1 means cell ID.

DMRS Power Boosting

Range: -40 to 40dB

Default: 0dB

Set the DMRS power boosting relative to data part.

When the number of DMRS CDM groups without data is changed, the DMRS power boosting is automatically changed based on the Table 4.1-1 of 38.214.

DMRS Configuration

Choices: Type 1 | Type 2

Default: Type 1

Set the DMRS Configuration for the channel.

DMRS Duration

Choices: Single Symbol | Double Symbol

Default: Single Symbol

Set the DMRS Duration for the channel.

DMRS-add-pos

Default: 0

Set the DMRS-add-pos for the channel.

The range is based on the Symbol Number, DMRS Duration, Mapping Type and DMRS-typeA-pos.

PDSCH Mapping

Choices: Type A | Type B

Default: Type A

Set the PDSCH Mapping type for the channel.

DMRS-typeA-pos

Choice: 2 | 3 | MIB.

Default: 2

Set the DMRS-typeA-pos for the channel. It will be automatically coupled to the MIB contents under SS/PBCH if MIB is selected.

When DL-SCH is overlapped with SS/PBCH (either active SSB or non-active SSB), any RB partial or fully occupied by SS/PBCH is not used for DL-SCH transmission for all the symbols.

DMRS Mapping Reference

Choices: CRB0 | CORESET0

Default: CRB0

Set the DMRS mapping reference of DL-SCH, see section 7.4.1.1.2 of TS38.211 for more information.

7. PTRS Settings

PTRS Enabled

Choices: On | Off

Default: Off

Enable or disable PTRS signal generation.

PTRS Power Boosting

Range: -40 to 40dB

Default: 0dB

Set the PTRS power boosting relative to data part.

PTRS port(s)

For downlink, because there is only one codeword supported, the PTRS port is associated with the lowest indexed DMRS port among the DMRS port(s), so this parameter is read-only, and always equal to the minimum DMRS port.

If the PTRS port is larger than 3 for DMRS configuration type1 or larger than 5 for DMRS configuration type2, this is an invalid case, so the PTRS is forced to off and set to read-only.

Frequency Density (K_PTRS)

Choices: 2 | 4

Default: 2

Set the Frequency Density (K_PTRS) for PTRS signal.

Time Density (L_PTRS)

Choices: 1 | 2 | 4

Default: 1

Set the Time Density (L_PTRS) for PTRS signal.

PTRS RE Offset

Choices: 00 | 01 | 10 | 11

Default: 00

Select the PTRS RE Offset for PTRS signal generation.

CSI-RS

1. General Settings

Name

Set the name for the channel.

Enabled

Enable or disable the channel or signal in a radio frame.

Power Boosting

Range: -40 to 40dB

Default: 0dB

Set the additional power boosting for the channel.

Antenna Port(s) Generated

Enter a comma-separated string or click drop down arrow to set the mapping between physical antennas and logical antenna ports, the number of physical antennas is under Waveform Setup node.

The logical antenna ports are expressed as p0, p1, ....

n_ID

Range: 0 to 65535

Default: 0

Set the n_ID for CSI-RS sequence generation.

Zero Power

Choices: True | False

Default: False

Set whether CSI-RS is Zero-power of non-zero-power.

2. Resource Allocation

Time domain: Use Allocated Slots to set slot allocation, and the symbol allocation is determined by the CORESET selection.
Frequency domain: Select BWP first, and then CORESET index in the BWP. After selecting CORESET index, use CCE offset and CCE number to set the frequency location of DCI.

Allocated Slots

Set the allocated slot index for the channel. There are 3 ways to configure:

To configure by individual index, use ',' as the delimiter, e.g. 0,1,2,3.
To configure by a range of index, use ':' to indicate the start index and the last index, e.g. 3:10 means 3,4,5,6,7,8,9,10.
To configure by a certain step, use two ':' to indicate the start index, the step and the last index, e.g. 0:4:12 means 0, 4, 8, 12.

These 3 configuration methods can be used in combination, by using ',' as the delimiter, e.g. 0,1,4:7,8:2:19 means index 0,1,4,5,6,7,8,10,12,14,16,18.

Bandwidth part

Select a bandwidth part to be used for transmission, all the BWP names defined under BWP Setup node will be list here.

RB Offset

Range: 0 to (RB Offset of BWP + RB Number of BWP - 4)

Default: 0

Set the RB offset relative to CRB0, corresponding to higher layer parameter startingRB, it should be multiple of 4.

RB Number

Range: 4 to RB Number of BWP

Default: 272

Set the RB number used for CSI-RS, corresponding to higher layer parameter nrofRBs, it should be multiple of 4.

Row Index of CSI-RS Location table

Range: 0 to 18

Default: 4

Set the row index of CSI-RS location table (table 7.4.1.5.3-1 in 38.211).

First Symbol (l0)

Range: 0 to 13 but may be limited according to the number of l' in the CSI-RS table.

Default: 12

Set the first symbol index (l0) of CSI-RS.

First Symbol2 (l1)

Range: 2 to 12 but may be limited according to the number of l' in the CSI-RS table.

Default: 12

Set the first symbol index2 (l1) of CSI-RS.

This parameter is only visible when Row Index of CSI-RS Location Table is 13/14/16/17.

Frequency Domain Bitmap

Set the CSI-RS frequency-domain location using bitmap, the length of bitmap is related to Row Index.

Number of Antenna Ports

Default: 4

Display the number of Antenna Ports used for CSI-RS, it is automatically coupled with Row Index.

Density

Set the Density of CSI-RS, the choices are updated by Row Index of CSI-RS Location Table.

PRB Allocation for Density = 0.

Choices: Even PRBs | Odd PRBs

Default: Even PRBs

Select Even or Odd PRBs used for CSI-RS when Density is 0.5.

CDM Type

Display the CDM Type of CSI-RS, it is automatically updated by Row Index of CSI-RS Location Table.

Resource Elements used for PDSCH

Choices: True | False

Default: True

Sets whether the resource elements assigned to CSI-RS can be used for PDSCH if CSI-RS collides with PDSCH. If true, PDSCH will be mapped to the resource element and CSI-RS will overwrite the values. If false, PDSCH will not be mapped to the resource elements.

PRS

1. General Settings

Name

Set the name for the channel.

Enabled

Enable or disable the channel or signal in a radio frame.

Power Boosting

Range: -40 dB to 40 dB

Default: 0 dB

Set the additional power boosting for the channel.

2. Positioning Frequency Layer

Subcarrier Spacing

Choices:

Single Numerology mode: Same as Subcarrier Spacing of Carrier.

Multiple Numerology mode: 15 kHz | 30 kHz | 60 kHz for FR1, 60 kHz | 120 kHz for FR2.

Default: 30 kHz

Select the Subcarrier Spacing for PRS.

For single numerology mode, the Subcarrier Spacing is fixed to the Subcarrier Spacing of carrier. There will be an error if Subcarrier Spacing of carrier is 240 kHz.

For multiple numerology mode, the Subcarrier Spacing selections are 15 kHz, 30 kHz, 60 kHz for FR1, 60 kHz, and 120 kHz for FR2. If the corresponding resource grid is not enabled, there will be an error.

Cyclic Prefix

Choices: Normal | Extended for 60 kHz Subcarrier Spacing; Fixed to Normal otherwise.

Default: Normal

Select the Cyclic Prefix for PRS.

For single numerology mode, the Cyclic Prefix is fixed to the Cyclic Prefix of carrier.

For multiple numerology and 60 kHz Subcarrier Spacing is selected, Cyclic Prefix is selectable, otherwise it is fixed to Normal.

Frequency Offset of PointA

Display the relative location of Point A (in Hz) for PRS from the middle of the carrier. Currently only the case that PointA of PRS is same as PointA of Carrier is supported.

Resource Bandwidth (RB_Number)

Range: 24 to 272 (granularity is 4).

Default: 272

Set the Resource Bandwidth for PRS in RB number.

Although the range for Resource Bandwidth is 1 to 63, defined in 37.355, which is one-to-one mapping to 24 to 272 RBs, the software uses the RB Number directly for convenience.

The RB Number should less than the resource grid size of selected mu. If the resource grid size is less than 24, there will be an error.

The RB Number should be less than the resource grid size of selected numerology.

Start PRB (RB_Offset)

Range: Should ensure that all the RBs of PRS are in the range of selected resource grid.

Default: 0

Set the Start PRB for PRS.

CombSizeN (K_comb_PRS)

Choices: 2 | 4 | 6 | 12

Default: 2

Select the CombSizeN (K_comb_PRS) for PRS.

3. Resource Set

Periodicity (T_per_PRS)

Choices: 2^mu * (4 | 5 | 8 | 10 | 16 | 20 | 32 | 40 | 64 | 80 | 160 | 320 | 640 | 1280 | 2560 | 5120 | 10240)

Default: 10

Select the Periodicity (T_per_PRS) for PRS.

ResourceSet Slot Offset (T offset PRS)

Range: 0 ~ (Periodicity - 1)

Default: 0

Set the ResourceSet Slot Offset (T_offset_PRS) for PRS.

Resource Repetition Factor (T_rep_PRS)

Choices: 1 | 2 | 4 | 6 | 8 | 16 | 32

Default: 1

Select the Resource Repetition Factor (T_rep_PRS) for PRS.

Resource Time Gap (T_gap_PRS)

Choices: 1 | 2 | 4 | 8 | 16 | 32

Default: 1

Select the Resource Time Gap (T_gap_PRS) for PRS.

Muting Pattern Option 1

The length of this bitmap (L) could be 0 | 2 | 4 | 8 | 16 | 32.

Default: Empty

Enter an one-zero string to set the Muting Pattern for option 1.

Muting Bit Repetition Factor (T_muting_PRS)

Choices: 1 | 2 | 4 | 8

Default: 1

Select the Muting Bit Repetition Factor (T_muting_PRS) for PRS.

Muting Pattern Option 2

The length of this bitmap should be 0 or equal to Resource Repetition Factor.

Default: Empty

Enter an one-zero string to set the Muting Pattern for option 2.

4. Resource

Sequence ID (n_ID.seg_PRS)

Range: 0 to 4095

Default: 0

Set the Sequence Id (n_ID,seq_PRS) for PRS.

ReOffset (k_offset_PRS)

Range: 0 to (combSizeN - 1)

Default: 0

Set the ReOffset (k_offset_PRS) for PRS.

Resource Slot Offset (T_offset.res_PRS)

Range: 0 to min(511, (Periodicity - ResourceSetSlotOffset - 1))

Default: 0

Set the Resource Slot Offset (T_offset,res_PRS) for PRS.

Resource Symbol Offset (I_start_PRS)

Range: 0 to 12 for Normal CP; 0 to 10 for Extended CP.

Default: 0

Set the Resource Symbol Offset (l_offset_PRS) for PRS.

Num Symbols (L_PRS)

Choices: 2 | 4 | 6 | 12 (Should ensure allocated symbols are all in the slot).

Default: 2

Set the Number of symbols (L_PRS) for PRS.

LTE Coexistence

This property grid sets the parameters for LTE.

For single numerology case, LTE coexistence can only be enabled when the numerology is 15 kHz. For multi-numerology case, LTE coexistence can only be enabled when the 15 kHz resource grid is enabled. Otherwise, there will be an error message at the bottom of GUI, and an error icon on the LTE coexistence button, as shown below.

When LTE-CRS conflicts with other channels, the behaviors are as described in the table below.

LTE-CRS	SS/PBCH	Not Allowed
LTE-CRS	DCI	Not Allowed
LTE-CRS	DL-SCH	Rate Matching
LTE-CRS	DMRS of DL-SCH	Should be illegal case, send DMRS
LTE-CRS	PTRS of DL-SCH	Should be illegal case, send PTRS
LTE-CRS	CSI-RS	Yes, but should on the different subcarriers

1. LTE General Settings

Enabled

Enable or disable LTE coexistence. When enabled, the resource elements for LTE-CRS are reserved and not available for PDSCH. It can only be enabled for 15 kHz numerology.

Number of LTE-CRS

Range: 1 to 4

Default: 1

Set the number of LTE-CRS, when it changes, the number of LTE-CRS will be changed on GUI with different category.

2. 5GNR UE Capability

additionalDMRS-DL-Alt

Choices: On | Off

Default: On

Indicates whether the 5GNR UE supports the alternative additional DMRS position for co-existence with LTE CRS.

3. LTE-CRS 0

LTE Bandwidth

Default: 5 MHz (25RB)

Sets the LTE bandwidth.

LTE Carrier offset to PointA

Range: 0 to 16383

Default: 0

Set the LTE carrier center subcarrier location determined by offset from point A using 15k subcarrier spacing.

LTE Carrier offset to 5GNR Center

Displays the LTE carrier center subcarrier location determined by offset from 5GNR carrier center using the number of 15k subcarrier spacing and frequency offset value in brackets.

MBSFN Subframes

Range: 0 to 9

Sets the subframe index, which is to be configured as MBSFN subframes in LTE. Default is empty means no subframe for MBSFN. There are 3 ways to configure:

To configure by individual index, use ',' as the delimiter, e.g. 0,1,2,3.

To configure by a range of index, use ':' to indicate the start index and the last index, e.g. 3:5 means 3,4,5.

To configure by a certain step, use two ':' to indicate the start index, the step and the last index, e.g. 0:2:6 means 0, 2, 4, 6.

Number of CRS Antenna Ports

Choices: 1 | 2 | 4

Default: 1

Set the number of antenna ports for LTE-CRS.

v-shift

Range: 0 to 5

Default: 0

Sets the v-shift value for LTE-CRS. It is given by LTE Cell ID mod 6.