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41		-= 3. MQTT forward operating principle =
	41	+= 3.  MQTT forward operating principle =
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43		-== 3.1 Network Structure ==
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	44	+== 3.1  Network Structure ==
	45	+
	46	+
45	45	Below shows the network structure for MQTT forwarding.
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47		-* For Uplink: The sensor sends data to LoRa Gateway via LoRa wireless, The gateway will process these data and forward to remote MQTT Broker via Internet.
48		-* For Downlink: The gateway subscribe a topic in the MQTT broker, when there is update on the topic, the gateway will know and broadcast the data to Local LoRa network,
	49	+* **For Uplink:**  The sensor sends data to LoRa Gateway via LoRa wireless, The gateway will process these data and forward to remote MQTT Broker via Internet.
	50	+* **For Downlink:** The gateway subscribe a topic in the MQTT broker, when there is update on the topic, the gateway will know and broadcast the data to Local LoRa network,
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50	50	[[image:image-20220527133547-1.png]]
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