LoRaWAN Gateway Traffic Analysis

A Node-Red flow to analyze the LoRaWAN packets your gateway(s) receive.

This flow acts like a LoRaWAN network for your gateway, takes in packages via the Semtech UDP protocol, calculates the airtime, figures out which network the package belongs to, and then stores all that information in an InfluxDB. You can then use Grafana to visualize that information

Setup

• Install Node-Red with the InfluxDB nodes
• Use the "Import" function in the Node-Red menu to import the flows.json file.
• Enter the InfluxDB credentials in the last node.
• Enter your gateway EUIs in the "Gateway Names if available" node.
• Setup Grafana, configure the InfluxDB datasource, and import the dashboard.json file.
• Configure your Node-Red installation as an additional server in the mp_pkt_fwd, by adding something like this section in the gateway_conf -> servers section:

  {
  "server_address": "nodered.example.com",
  "serv_enabled": true,
  "serv_down_enabled": false,
  "serv_port_up": 1688,
  "serv_port_down": 1688
  }

  Or if you're using the balena.io image for your gateway(s), add the following Service Variables:

  SERVER_1_ADDRESS=nodered.example.com
  SERVER_1_ENABLED=true
  SERVER_1_PORTDOWN=1688
  SERVER_1_PORTUP=1688

References

• Michael Enslin for the idea and the main nodes
• https://github.com/avbentem/lorawan-airtime-ui for the Airtime calculation