Page History

...

Content

LTE Signal strength

The signal strength of the LTE-M1 or NB-IoT network can be derived from the RSRP and RSRQ dimensionless values.

...

Source: https://infocenter.nordicsemi.com/index.jsp?topic=%2Fref_at_commands%2FREF%2Fat_commands%2Fmob_termination_ctrl_status%2Fproc_cesq_set.html

NB-IoT network coverage

Please see: https://iotcreators.com/network/?#G

Modem specifics (nRF9160)

Today Lobaro is using the Nordic nRF9160 in most of it's products. Beside that Lobaro Firmware the Modem Firmware from Nordic is running on a separate core.

Known issues

Remote Update for Modem Firmware not possible (relevant until today)

The Lobaro Hardware does not support remote Modem Firmware updates. This might change in future but brings additional hardware requirements like external memory.

Modem Firmware < 1.3.0 does not support LTE-M and NB-IoT at the same time (relevant until 10/2022)

When enabling both LTE-M and NB-IoT in a Lobaro Firmware that runs with Modem Firmware < 1.3.0 the Modem can not do a fallback to LTE-M when NB-IoT is not available and thus the firmware only uses NB-IoT in that case.

With Modem Firmware >= 1.3.0 a proper fallback is implemented.

nrf9160 SICA vs. SIBA (no LTE-M) (relevant until ~12/2021)

The nrf9160 SIBA only supports NB-IoT but not LTE-M. Since late 2021 Lobaro only uses the nrf9160 SICA which supports both NB-IoT and LTE-M.

...