Perhaps you can help me think this through,
a client of mine is installing sensors on single gateway deployments for agri-tech purposes. The gateways are on LTE backhaul and Solar power. So GW downtime and network latency are a reality.
There are maybe 30 sensors on a gateway. They are transmitting non-ACK packets every 10 minutes with ADR. (we are using a private network server, not TTN by the way).
Currently I have the devices on OTAA and setup to do a LinkADRReq every 5-6 hours with a threshold of 2 failed attempts (LinkADRAns not received) before restart and rejoin.
So when a device tries to re-join, and there is no GW, it will attempt to rejoin aggressively for a few hours and than it will decrease the attempts until it tries maybe once every few hours. So the gateway can be backup but it won’t be for a few hours until the device re-joins and starts sending sensor data again.
What I am thinking here is that, for this use-case, perhaps it is best for me to do ABP authentication method instead, and to eliminate this whole join process which might cause me data-lost issues, joining problems and etc.
What do you guys think about it ?