NB-IoT mode

The following table shows recommended test cases for conducted Narrowband Internet of Things (NB-IoT) non-signaling mode.

Table 1. RF performance tests for conducted NB-IoT non-signaling mode
Mode Test item 3GPP test ID Band/Channel Temp/Voltage XRFTEST signal parameters Expected result Note
NB-IoT TX Maximum output power 6.2.2F ALL/LMH TYP/EXT 15 kHz, QPSK, 12 SC, Pout +25 dBm 21 dBm Pmax, 21 dBm±2 dB (QPSK, 12 SC)
Frequency error 6.5.1F ALL/MID TYP/TYP <±0.1 ppm Requires performing AFC correction. A supporting AT command is available in modem firmware v1.2.0 and later.
NPUSCH EVM (RMS) 6.5.2F.1 ALL/LMH TYP/EXT <6% 3GPP limit <17.5%
Adjacent channel leakage power ratio 6.6.2F.3 >33 dB E-UTRA ACLR±1
Spurious emissions (9 kHz to 12.75 GHz) ALL/MID TYP/TYP <-33 dBm/1 MHz Harmonics, noise
NB-IoT RX Reference sensitivity level 7.3.1F ALL/ALL CW level -90 dBm1 >21.5 dB SNR Expected SNR at -90 dBm test signal (Carrier Wave (CW)) level
RSSI scan2 NA RSSI <-111.5 dBm Expected RSSI reading of average noise floor

1 Sets RX gain.
2 To test noise floor.