Hi Jason,
Your explanation is very clear, however I have the following situation :
3 LoRaWAN devices connected to a single gateway (AEP conduit with lorawan network server).
1 of the device has some trouble to communicate with the gateway (not because of distance but obstacles), with about 18% frames lost. This ratio can be improved/solved with better antenna (UFL antenna is connected to the LoRaWAN device, classic 3dbi antenna to the gateway)
Now my wondering is about the ADR management of the network server (ADR is enabled on device side).
I have a weird behaviour of my device with periods up to 12 hours with no frame lost, and other periods with about 1 on 3 frames lost. Maybe this is due to the environment (multiple walls, disturbance ?), but the device is static.
The device is started by default with SF9, but most of the time the ADR is down to SF7 even when the device has trouble to communicate. SF can be set at 8, then 9, 10, 11 by network server, and finally set at 7 for no specific reason (still transmitting the same frame)
Low Spreading Factor and lost frames do not coincide, I have cases where communication is good with SF7 for a long period, sometimes it is not.
The LoRaWAN device is class C, and sending unconfirmed frames (1 time, no ack required) with 58 bytes of payload most of the time (every 5 minutes), and sometimes 70 (3 times a day), 47 (1 time a day), and 80 (1 time a month).
Thank you
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This reply was modified 1 hour, 53 minutes ago by
Faustin Empis.
