NB-IoT Signaling
R&S
®
CMW-KM300/-KS300
93
User Manual 1178.5689.02 ─ 06
No. of Samples
Defines the number of DL transmissions to be processed per measurement cycle (a
single-shot measurement covers one measurement cycle).
Remote command:
CONFigure:NIOT:SIGN<i>:BLER:SAMPles
Error Ratio Calculation
Selects the formula to be used for calculation of the BLER from the number of ACK,
NACK and DTX. NPDSCH decoding errors result in NACK while NPDCCH decoding
errors result in DTX.
3GPP TS 36.521 specifies which formula must be used for a certain test.
The following formulae are available:
●
BLER = (NACK + DTX) / (ACK + NACK + DTX)
●
BLER = DTX / (ACK + NACK + DTX)
●
BLER = NACK / (ACK + NACK + DTX)
●
BLER = NACK / (ACK + NACK)
Remote command:
CONFigure:NIOT:SIGN<i>:BLER:ERCalc
2.4
Programming
The following sections provide programming examples for the NB-IoT signaling appli-
cation.
The examples contain SCPI commands supported by the R&S
CMW and the following
symbolic scripting commands:
●
// <comment>
:
A <comment> ignored by the used programming tool
●
WHILE <query> <> <value>
:
Waits until the <query> returns a certain <value>, e.g. a specific state is reached.
●
WAITKEY <message>
:
Displays a dialog box with a <message> and waits until you close the box.
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2.4.1
General Configuration
The NB-IoT signaling application is programmed as follows:
●
The application is controlled by SCPI commands with the following syn-
tax:
...:NIOT:SIGN:...
.
●
After a
*RST
, the DL signal is switched off.
To activate the DL signal, use
SOURce:NIOT:SIGN:CELL:STATe ON
.
Query the cell state using
SOURce:NIOT:SIGN:CELL:STATe:ALL?
. The result
ON,ADJ
indicates that the DL signal is available.
Programming
深圳德标仪器
135-1095-0799
