Rohde & Schwarz R&S CMW-KM300, User Manual

Page: 14 / 388

NB-IoT Signaling
R&S
®
CMW-KM300/-KS300
14 User Manual 1178.5689.02 ─ 06
● User-Defined Scheduling ........................................................................................ 24
● Operating Bands ..................................................................................................... 27
● Data Tests ............................................................................................................... 30
● Trigger Signals ........................................................................................................ 30
● Cell Reselection Setup ............................................................................................31
2.2.1 Test Setup
The basic test setup uses a bidirectional RF connection between the tester and the
device under test (DUT). It carries both the downlink and the uplink signal:
●
The R&S CMW transmits the downlink signal to which the DUT can synchronize to
perform an attach. The downlink signal is used to transfer signaling messages and
user data to the DUT.
●
The DUT transmits an uplink signal that the R&S CMW can receive, decode and
analyze.
For this setup, the DUT is connected to one of the bidirectional RF COM connectors at
the front panel of the R&S
CMW. No additional cabling and no external trigger are nee-
ded. The input level ranges of all RF COM connectors are identical.
Figure 2-1: Test setup
2.2.2 Initiating Signaling Tests
The required settings vary depending on the measurement to be performed. However,
the following general procedure is applicable to most measurements.
1. Connect your UE to the R&S CMW (see Chapter 2.2.1, "Test Setup" , on page 14).
2. Open the "NB-IoT signaling" firmware application.
3. Configure the signaling application according to your test case.
You can modify the most important settings directly in the main view. The "Config"
hotkey provides access to the configuration dialog box.
4. To turn on the DL signal, press ON | OFF. Alternatively, right-click the "NB-IoT Sig-
naling" softkey and click ON.
Wait until the "NB-IoT Signaling" softkey indicates the "ON" state and the hour
glass symbol has disappeared.
5. Switch on the UE.
General Description
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