MQTT-SN Pass-Through Concept is proposed for very constraint networks.
1 Architecture
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- sensors on a multidrop RS485 or NCN5150 network;
(the sensors use the complete MQTT-SN message)
- simple Lantronix or GPRS serial to UDP converter;
(the converter only puts the MQTT-SN message in UDP packet)
- MQTT-SN gateway;
(the gateway must remember the location of the sensor in the IP network)
- MQTT broker.
2 Advantages
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- low cost sensors on RS485 network is simple to install and wire;
(or NCN5150 is even simpler)
- low cost and off-the-shelf serial to UDP converters available;
(stateless and no configuration)
- complexity only in MQTT-SN gateway and maybe only one required in installation;
(remote service where GPRS is used)
- features of MQTT available.
3 Challanges
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MQTT-SN Pass-Through is it standard or are changes required?
Is there a standard way required to set MQTT-SN Gateway IP addresses so that no configuration is required?
Can we use the internet gateway to catch and redirect all messages on a certain port?
Do we need to configure and poll the converters?
Is the MQTT-SN gateway required?
4 Way forward
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What is the next step?
Where can we document and discuss this?
C-: