LTE FDD

DL-SCH Downlink (NB-IoT)

For Waveform Playback (ARB) capability.

This topic describes the settings of the DL-SCH node. This node is displayed when the carrier is Downlink NB-IoT.

General

Enable

Power

UE Category Narrowband

RNTI

RNTI Hex

RNTI Type

NPDSCH

Starting OFDM Symbol

NPDSCH Starting Subframe

Number of Subframes (N_SF)

Number of Repetitions (N_Rep)

NPDCCH Maximum Number of Repetitions (R_max)

Data

MCS Index

Modulation

TBS Index

Transport Block Size

General

Enable

Turn the channel On or Off.

SCPI Command

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:STATe ON|OFF|1|0

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:STATe?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:STATe ON

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:STATe?

Couplings

 

Preset

ON

State Saved

Yes

Initial S/W Revision

A.19.00

Power

Enter a power level, in dB for the selected channel. Refer to the Output Power Calculation (Downlink) for a description of how the software applies to your power settings.

SCPI Command

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:POWer <real>

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:POWer?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:POWer 0

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:POWer?

Couplings

 

Preset

0

State Saved

Yes

Min

-60

Max

20

Initial S/W Revision

A.19.00

UE Category Narrowband

Select UE Category Narrowband.

SCPI Command

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:UECatnb NB1|NB2

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:UECatnb?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:UECatnb NB2

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:UECatnb?

Couplings

 

Preset

NB2

State Saved

Yes

Initial S/W Revision

A.19.00

RNTI

Enter the Radio Network Temporary Identifier (RNTI) for NPDSCH. Available input method is the decimal format.

SCPI Command

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:RNTI <integer>

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:RNTI?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:RNTI 1

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:RNTI?

Couplings

 

Preset

1

State Saved

Yes

Min

1

Max

50

Initial S/W Revision

A.19.00

RNTI Hex

Enter the Radio Network Temporary Identifier (RNTI) for NPDSCH. Available input method is the hexadecimal format.

SCPI Command

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:RNTI <String>

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:RNTI?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:RNTI "0x0001"

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:RNTI?

Couplings

 

Preset

0x0001 (Values depend on the value of RNTI and RNTI Type.)

State Saved

Yes

Initial S/W Revision

A.19.00

RNTI Type

Select RNTI Type. RNTI Type determines RNTI range and usage.

SCPI Command

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:RNTI:TYPE<string>

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:RNTI:TYPE?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:RNTI:TYPE "CRNTI"

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:RNTI:TYPE?

Couplings

 

Preset

CRNTI

State Saved

Yes

Initial S/W Revision

A.19.00

NPDSCH

Starting OFDM Symbol

Displays the control region size of the E-UTRA cell for the in-band operation mode in number of OFDM symbols.

SCPI Command

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:STARtofdm?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:STARtofdm?

Couplings

 

Preset

0

State Saved

Yes

Min

N/A

Max

N/A

Initial S/W Revision

A.19.00

NPDSCH Starting Subframe

Invalid: Downlink Carrier Configuration Narrowband is Anchor Carrier and subframe #0 (NPBCH) or 5 (NPSS) in each frame or subframe #9 (NSSS) in each even frame.

SCPI Command

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:NPDSch:STARt:SUBFrame <integer>

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:NPDSch:STARt:SUBFrame?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:NPDSch:STARt:SUBFrame 6

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:NPDSch:STARt:SUBFrame?

Couplings

 

Preset

6

State Saved

Yes

Min

1

Max

19

Initial S/W Revision

A.19.00

Number of Subframes (N_SF)

Set the number of subframes for NPDSCH.

SCPI Command

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:SUBFrames:COUNt 1|2|3|4|5|6|8|10

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:SUBFrames:COUNt?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:SUBFrames:COUNt 1

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:SUBFrames:COUNt?

Couplings

 

Preset

1

State Saved

Yes

Initial S/W Revision

A.19.00

Number of Repetitions (N_Rep)

Choice: 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128 | 192 | 256 | 384 | 512 | 768 | 1024 | 1536 | 2048

Set the scheduled number of repetitions for NPDSCH.

When RNTI Type is set to SI-RNTI, this setting is determined by Scheduling Information SIB1 on BCH and is read-only.

SCPI Command

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:NPRS:NUMRepetitions 1|2|4|8|16|32|64 |128|192|256|384|512|768|1024|1536|2048

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:NPRS:NUMRepetitions?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:NPRS:NUMRepetitions 1024

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:NPRS:NUMRepetitions?

Couplings

 

Preset

1

State Saved

Yes

Min

1

Max

2048

Initial S/W Revision

A.19.00

NPDCCH Maximum Number of Repetitions (R_max)

Select NPDCCH Maximum Number of Repetitions (R_max) when RNTI Type is set to C-RNTI and DCI Usage is set to Scheduling NPUSCH or Scheduling NPUSCH during Random Access Procedure.

SCPI Command

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:NPDCch:MAXRep R1|R2|R4|R8|R16|R32|R64|R128|R256|R512|R1024|R2048

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:NPDCch:MAXRep?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:NPDCCH:MAXRep R1

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:NPDCCH:MAXRep?

Couplings

 

Preset

R1

State Saved

Yes

Initial S/W Revision

A.19.00

Data

Use the data source selection dialog box to select PN9, PN15 or user defined bits to use for the data in the transport block.

SCPI Command

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:DATA PN9|PN15|PN23|USER

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:DATA?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:DATA PN9

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:DATA?

Couplings

 

Preset

PN9

State Saved

Yes

Initial S/W Revision

A.19.00

MCS Index

Set MCS Index.

SCPI Command

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:MCS <integer>

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:MCS?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:MCS 0

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:MCS?

Couplings

 

Preset

0

State Saved

Yes

Min

0

Max

13

Initial S/W Revision

A.19.00

Modulation

Displays NPDSCH modulation type.

SCPI Command

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:MODulation QPSK|QAM16|QAM64|QAM256

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:MODulation?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:MODulation QPSK

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:MODulation?

Couplings

 

Preset

QPSK

State Saved

Yes

Initial S/W Revision

A.19.00

TBS Index

When RNTI Type is set to C-RNTI/P-RNTI/RA-RNTI, this setting is determined by MCS Index.

SCPI Command

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:TBSindex?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:TBSindex?

Couplings

 

Preset

0

State Saved

Yes

Initial S/W Revision

A.19.00

Transport Block Size

Displays NPDSCH Transport Block Size which is determined by MCS Index and Number of Subframes (N_SF) when RNTI Type is set to C-RNTI/P-RNTI/RA-RNTI.

SCPI Command

[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:DLSCh:TSIZe?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:DLSCh:TSIZe?

Couplings

 

Preset

16

State Saved

Yes

Initial S/W Revision

A.19.00

Carrier Downlink ARB

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