Downlink data is not received to node when duplicate packet occurs

1

Hello,

I am using Lora Class A device. Uplink and downlink is working well but sometimes downlink data is not received cause of duplicate packets.
I am getting Downlink Ack on chirpstack server but received response is mac_tx_ok instead of mac_rx.

Thanks in advance

2

If your device is too close to the gateway, it is possible that the gateway is reporting two uplinks, on different channels. In that case the downlink might be sent using a wrong frequency.

3

Thanks for the reply @brocaar

Yes. You are right but its also getting two or three uplinks on same and different channel. When i put device far from gateway(distance is approx.100 meter). but ratio of duplicate packets is less than device is close to the gateway. Average every 5 to 10 packets i received duplicate uplink. I have not issue with duplicate packets. my problem is when downlink is queue and duplicate packets are occurred i am not getting downlink data.