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


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?


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

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.

This explains my question. Thanks