Possible to receive message when in sleep or receive last message on request?

End Devices (Nodes)
1

Hello,

I was wondering, what would happen if the gateway would send a message to a Node, while the Node is in sleep. Will the Node miss the message? If so is it possible to request the last message, when the Node gets out of sleep?

Thanks

2

To receive LoRa the LoRa receiver needs to be powered up.

3

For class A, the node will be listening to receive downlinks at exactly 1 and 2 seconds after transmitting an uplink. And for class A the server will never send such downlink unless it first received an uplink.

So, yeah, after waking up a node could send dummy data to request any pending downlink. But downlinks are very limited.

4

This explains my question. Thanks