Enabling Secure and Scalable Firmware Updates Over LoRaWAN
summary
Claims a LoRaWAN FUOTA pipeline that actually ships updates at scale by combining multicast downlinks with fragmentation and forward error correction, time-synced Class C sessions, and gateway-side TPM/root of trust. It measures airtime and power tradeoffs, reports hours-long worst-case updates, and reduces payloads via delta/partial updates and an LR1110 option. A gateway prototype with CRA compliance and energy-harvesting support (thermoelectric generator) is built to mitigate battery drain; notes collisions, SF tradeoffs, and carrier support as remaining deployment constraints.
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chapters (12)
- 0:00Introduction
- 1:05Firmware updates in IoT
- 2:49LoRaWAN update challenges
- 3:30LoRaWAN update mechanics
- 5:13LoRa Alliance FU specs
- 5:55Multicast for bandwidth/duty cycle
- 6:40Power use during updates
- 7:46Bandwidth and connectivity issues
- 9:12Scalability in deployments
- 10:38Smaller firmware files
- 12:22Secure update chain
- 13:03Takeaways and Miro Miko’s solutions
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