Modem events in case of network issues

[Marco La Grassa]

Hello,

we're developing a NB-IoT application using the nrf9160 and the nrf modem library.

Let’s suppose the modem is in PSM and due to reception/network issues it cannot send the TAU at the scheduled time.
1) What would happen?
2) What kind of event would I receive in the application's registered lte events handler?
3) In case the modem is disconnected from the LTE network, would the library attempt to reconnect automatically or should I perform a new lte_lc_connect_async() call?
4) What event signals a disconnection from the LTE network? LTE_LC_EVT_CELL_UPDATE with an invalid cell id?

Thanks for your help!

Marco

[helsing]

Hi Marco,

Sorry for the delay. Just letting you know we are working on this and will get back to you.

Håkon

[Marco La Grassa]

In addition to the previous questions, I also have this one:

You wrote "The modem will automatically try to reconnect/search for a new network, as long as it is running". What do you mean by "as long as it is running" ?.

If I understand your answer correctly, i don't need any watchdog (or similar) to monitor the status of the network connection, since the modem will always try to re-attach in case it gets disconnected. Am i right?