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nrf9160 Band Selection Algorithm

Musa.A


We are wondering how nrf9160 modem decides which band to use when there are multiple bands available (LTE CAT NB) and there isn't any apllied band lock from the software side. In our use case, although there are 2 bands available for the device, it selects mostly the one which has worse RSSI. Is it possible to make one band preferable without locking the other band?

Best Regards,
Musa

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    Right now the problem we have is even if we put the 2 device at the same location( with 5cm distance in between) they are connecting to the different cells with NBIoT (both are in band 20). And while the one cell provides -80dbm signal, the other one can only provide around -110 dbm. So we are wondering why it choose the worst one while there are 2 available cells and the other one is far better. We had this problem more than one area with different devices.

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    Right now the problem we have is even if we put the 2 device at the same location( with 5cm distance in between) they are connecting to the different cells with NBIoT (both are in band 20). And while the one cell provides -80dbm signal, the other one can only provide around -110 dbm. So we are wondering why it choose the worst one while there are 2 available cells and the other one is far better. We had this problem more than one area with different devices.

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