LTE FDD

Positioning Signals Downlink (NB-IoT)

For Waveform Playback (ARB) capability.

This topic describes the settings of the Positioning Signals node when the carrier is Downlink NB-IoT.

NPRS State

NPRS Power

NPRS ID

NPRS Subframe Configuration

NPRS Bitmap

NPRS Muting Information A Length (T_REP)

NPRS Muting Information A

NPRS State

Turn the signal on or off.

SCPI Command	[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:NPRS:STATe ON\|OFF\|1\|0 [SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:NPRS:STATe?
SCPI Example	RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:NPRS:STATe OFF RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:NPRS:STATe?
Couplings
Preset	OFF
State Saved	Yes
Initial S/W Revision	A.19.00

NPRS Power

Enter the power level in dB for the narrowband positioning reference signal (NPRS).

SCPI Command	[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:NPRS:POWer <real> [SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:NPRS:POWer?
SCPI Example	RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:NPRS:POWer 0 RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:NPRS:POWer ?
Couplings
Preset	0
State Saved	Yes
Min	-60
Max	20
Initial S/W Revision	A.19.00

NPRS ID

Enter a value of narrowband positioning reference signal identity (NPRS ID). For calculating v_shift of NPRS, v_shift = NPRS ID modulo 6.

SCPI Command	[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:NPRS:ID <integer> [SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:NPRS:ID?
SCPI Example	RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:NPRS:ID 1 RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:NPRS:ID?
Couplings
Preset	1
State Saved	Yes
Min	0
Max	4095
Initial S/W Revision	A.19.00

NPRS Subframe Configuration

Set NPRS Subframe Configuration.

SCPI Command	[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:NPRS:SUBFrame:CONFig PA\|PB\|PAB [SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:NPRS:SUBFrame:CONFig?
SCPI Example	RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:NPRS:SUBFrame:CONFig PA RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:NPRS:SUBFrame:CONFig?
Couplings
Preset	PA
State Saved	Yes
Initial S/W Revision	A.19.00

NPRS Bitmap

Specifies the NPRS subframe Part A configuration over 10 ms or 40 ms.

NPRS Bitmap length is the same as Downlink Bitmap Length. The first/leftmost bit corresponds to subframe #0 of the radio frame satisfying SFN mod x = 0, where x is the size of the bit string divided by 10.

SCPI Command	[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:NPRS:BITMap?
SCPI Example	RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:NPRS:BITMap?
Couplings
Preset	1,1,1,1,1,1,1,1,1,1
State Saved	Yes
Initial S/W Revision	A.19.00

NPRS Muting Information A Length (T_REP)

Specifies the bit length of NPRS Muting Information A which is muting pattern for NPRS subframe configuration part A.

SCPI Command	[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:NPRS:MUTing:INFO:A:LENGth N2\|N4\|N8\|N16 [SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:NPRS:MUTing:INFO:A:LENGth?
SCPI Example	RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:NPRS:MUTing:INFO:A:LENGth N2 RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:NPRS:MUTing:INFO:A:LENGth?
Couplings
Preset	N2
State Saved	Yes
Initial S/W Revision	A.19.00

NPRS Muting Information A

Specifies the NPRS muting configuration of the NPRS Subframe Configuration Part A.

SCPI Command	[SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:NIOT:DLINk:NPRS:MUTing:INFO:A?
SCPI Example	RADio:LTEFdd:WAVeform:CCARrier:NIOT:DLINk:NPRS:MUTing:INFO:A?
Couplings
Preset	1,1
State Saved	Yes
Initial S/W Revision	A.19.00