NB-IoT Signaling
R&S
®
CMW-KM300/-KS300
62
User Manual 1178.5689.02 ─ 06
NB-IoT Channel Raster Offset
Displays the offset of the NB-IoT carrier center frequency from the channel raster, that
means from the configured RF frequency, see
Chapter 2.3.5.2, "RF Frequency"
The center frequency of the NB-IoT carrier equals the configured RF frequency plus
the displayed offset.
The DL channel raster offset is signaled to the UE via the MIB.
For the standalone mode, the channel raster offset is zero.
Remote command:
SENSe:NIOT:SIGN<i>:CELL:IBGBand:CHANnel:OFFSet:DL?
SENSe:NIOT:SIGN<i>:CELL:IBGBand:CHANnel:OFFSet:UL?
2.3.9.3
NPRACH Configuration
Access: "Config" hotkey > "Physical Cell Setup" > NPRACH section.
This node configures settings related to the random access procedure.
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Max. Number of Preamble Transmissions
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No Response to Preambles
By default, the signaling application responds to received preambles, so that the UE
can perform an attach. Alternatively, received preambles can be ignored (no
response), so that the UE continues to send preambles and NPRACH measurements
can be performed (included in R&S CMW-KM300).
"Off"
The signaling application responds to received preambles.
"On"
Any received preambles are ignored by the signaling application (no
response).
Remote command:
CONFigure:NIOT:SIGN<i>:CELL:NPRach:NOResponse
Power Ramping Step
Specifies the transmit power difference between two consecutive preambles. This
value is broadcast to the UE.
If you set the step size to 0 dB, the preamble power is kept constant by the UE. Thus
you can use a constant expected nominal power setting during an NPRACH measure-
ment.
Remote command:
CONFigure:NIOT:SIGN<i>:CELL:NPRach:PRAMping
GUI Reference
