I'm learning LoRa did not get answer to a question

For example if I have a Gateway that supports 8 nodes in parallel (node could be SX1276/78 or any other node, or you can recommend some for such task)
I have 50 nodes to send data to Gateway
What will happen if more than 8 nodes sends data to Gateway at the same time,
Is there some mechanism that can handle such situation in LoRa devices/protocol

My question is not regarding any project, its only about concept, that's why I'm not mentioning any specific gateway or node devices, if its something necessary you can assume some most suitable for the task

Once i understand it enough then i will go further to buy devices and develop proof of concept
thanks,