A method of transmitting a downlink broadcast message to a plurality of end devices in a long-range wide-area network (LoRaWAN) according to an embodiment of the present invention includes a long-range wide-area (LoRaWAN) A method for transmitting a broadcast message from a network to a plurality of end devices, the method comprising: (a) one of the plurality of end devices becomes a downlink initiator and periodically transmits a downlink request ); And (b) the network server transmitting the broadcast message using a second receive window (RX2 Window) of a class A end device slot timing of a Laura protocol used in the Laura wide area network through the gateway .
展开▼
