LTE_LC_RRC_MODE_CONNECTED timeout

[allard.p]

I've the following situation:

1. Send CoAP message trough send(), this causes the the nRF9160 to start RCC connection

2. Wait for RCC connected mode (LTE_LC_RRC_MODE_CONNECTED)

3. Start CoAP retransmit timers

Two questions:

- Is it possible to 'force' RCC connection without sending something trough a socket?

- What would be a reasonable timeout for step 2? I tried to extract this from the 3GPP TS 38.331 document, but I did not find the timeout.

[allard.p]

Thanks for the replies. We are using NB-IOT with PSM and RAI, so power usage is very important. eDRX could solve the 'separate response' problem but is to costly in power usage. We decided to follow Achim's advice, this is currently testing and working great.

[Achim Kraus]

:-) Great!