LoRa RSSI for channel activity


I want to ask: Can LoRa can detect the channel activity of carrier sense for any type of modulated signals?
i want to transmit my LoRa signal in a frequency but that frequency is used by other devices (not Lora) so i need to carrier sense before transmitting so not to interfere other networks. is that possible with sx127x chip?
I can read the RSSI when LoRa packet received but cannot read RSSI when not receiving the LoRa packets just checking RSSI.
Thank you.