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NB-IoT Signaling
R&S
®
CMW-KM300/-KS300
90
User Manual 1178.5689.02 ─ 06
PHY/MAC Log, U-Plane Data Log
These settings configure the level of detail of the log files.
2.3.16
BLER Measurement
The measurement sends data to the UE via the NPDSCH. It evaluates the positive
acknowledgments (ACK) and negative acknowledgments (NACK) returned by the UE
to determine the block error ratio (BLER) and the throughput.
The measurement is especially suitable to assess the characteristics and the perform-
ance of the UE receiver at low RF power levels.
To measure the downlink BLER, you need a connection with data transfer in the down-
link.
In test mode, set up a DL connection. You can, for example, use a DL RMC. This
scheduling type includes data transfer on the MAC layer.
To access the measurement, press the softkey "NB-IoT RX Meas" in the NB-IoT sig-
naling main view.
The BLER view and the configuration dialog are described in this section.
2.3.16.1
Measurement Control
To turn the measurement on or off, select the control softkey and press [ON | OFF] or
[RESTART | STOP]. Alternatively, right-click the control softkey.
BLER (Softkey)
The softkey shows the current measurement state. Additional measurement substates
can be retrieved via remote control.
Remote command:
2.3.16.2
Measurement Results
Access: "NB-IoT Signaling" main view > "NB-IoT RX Meas" softkey.
The main view of the BLER measurement shows the measurement results and the
most important settings of the "NB-IoT signaling" application. Additional settings of the
"NB-IoT signaling" application can be accessed via the "Signaling Parameters" softkey
and the related hotkeys.
GUI Reference
深圳德标仪器
135-1095-0799