LoRaWAN crash course

What is LoRaWAN? Think of it as WiFi for sensors! In this workshop, you will learn all about LoRaWAN, and how to develop a simple sensor that sends data to the Internet via the free/open The Things Network.

Transcript

1. Civic Tech Hackathon for a better city
2. LORAWAN CRASH COURSE Building an open and free Internet of Things casas@arch.ethz.ch | twitter.com/gnz
3. THE THINGS NETWORK A global community, building open source to operate a crowd-sourced network for the Internet of Things.
4. THE THINGS NETWORK A global community, building open source to operate a crowd-sourced network for the Internet of Things. FREE/OPEN GLOBAL WIFI SENSORS
5. IN SWITZERLAND
7. ZURICH COVERAGE
8.  TECHNOLOGY  COMMUNITY  OPENNESS
9. WHAT IS LORAWAN?
10. LORAWAN • LoRa (Long Range): Radio modulation technique • LoRaWAN: MAC protocol for Wide Area Networks (OSI Layer 2 and 3) sensors nodes gateways backend application backend LoRa ip ip
11. LORAWAN 3 * 10 10 km range 10 USD/node 10 years battery life
12. LONG RANGE 2km - 5km in urban setting 40km+ in rural setting © ttnmapper.org , Open Street Map
13. INSANELY LONG RANGE (under extreme conditions) 201 km ground-to-ground by Andreas Spiess, TTN Basel http://www.sensorsiot.org/ © ttnmapper.org
14. INSANELY LONG RANGE (under extreme conditions) 333 km air-to-ground (helium balloon) by @telkamp (mapping @jpmeijers) © ttnmapper.org
15. LOW COST Node/transceiver: CHF 8.5 Gateway: ~CHF 90 (indoor) Open source stack + ISM bands Low CAPEX, almost negligible OPEX Photos by @gnz, CC-BY-SA
16. FREE & OPEN SOURCE STACK
17. UNLICENSED SPECTRUM Anyone can deploy a LoRaWAN network!
18. LOW POWER Class A Class B Class C Always send, receive after send. Up to 10 years. Deep sleep: ~10 μA TX ~40 mA RX ~14 mA Time-synchronized receive windows. Always-on receive mode. Not supported Support not ready, but planned
20. LIMITATIONS Bandwidth Payload size Regulatory limits 0.3 bps to 50 kbps 51 bytes (DR0) 222 bytes (DR4) Fair usage policy 1% Duty Cycle 30 seconds/day airtime 10 downlinks/day
21. COMMUNITY
22. Photo by Ali Soy, @alisoy1502
23. Photos by @gnz, CC-BY-SA
24. Photos by @gnz, CC-BY-SA
25. Photos by @gnz, CC-BY-SA
26. Photos by @gnz, CC-BY-SA
27. OPENNESS
28. CAN WE TRUST AN OPEN NETWORK?
29. THE WORLD RUNS ON OSS
30. CAN I TRUST… …the gateway won’t be shut down? REDUNDANCY …sensitive information stays private? CRYPTOGRAPHY …the backend to be up-and-running? DECENTRALIZATION
31. CAN I TRUST… …it will be around in a few years time? OSS + OPEN STANDARDS
32. CONNECTING THINGS
33. GATEWAYS
34. GATEWAYS
35. GATEWAYS
36. GATEWAYS
37. console.ttn.opennetworkinfrastructure.org u.nu/ttn
39. APPLICATIONS
41. DEVICES
42. THANK YOU @2ni! https://github.com/2ni/lorawan_modem
43. WIRING Type ST Board Nano Type GND GND COMMAND PB8 D3 RTS BUSY PA8 D2 CTS USART1_RX PA10 TX UART TX USART1_TX PA9 RX UART RX Diagram by Thomas Amberg (@tamberg)
44. STEPS 1. Get Dev EUI from device 2. Register device on TTN 3. Get App EUI & Key from TTN 4. Use join(appeui, appkey)
47. MORE RESOURCES • Working with bytes: https://www.thethingsnetwork.org/docs/devices/bytes.html • LoRa crash course (RF, link budget, lots of technical details) https://www.youtube.com/watch?v=T3dGLqZrjIQ
48. THANKS! Gonzalo Casas Open Network Infrastructure Association casas@arch.ethz.ch | twitter.com/gnz
49. ARCHITECTURE
51. ROUTER BROKER HANDLER
52. ROUTER BROKER HANDLER COMMUNITY NETWORK
53. ROUTER BROKER HANDLER ROUTER BROKER HANDLER COMMUNITY NETWORK
54. ROUTER BROKER HANDLER ROUTER BROKER HANDLER COMMUNITY NETWORK
55. ROUTER BROKER HANDLER ROUTER BROKER HANDLER COMMUNITY NETWORK
56. ROUTER BROKER HANDLER ROUTER BROKER HANDLER COMMUNITY NETWORK
57. ROUTER BROKER HANDLER ROUTER BROKER HANDLER COMMUNITY NETWORK
58. ROUTER BROKER HANDLER ROUTER BROKER HANDLER COMMUNITY NETWORK
59. ROUTER BROKER HANDLER ROUTER BROKER HANDLER COMMUNITY NETWORK
60. ROUTER BROKER HANDLER ROUTER BROKER HANDLER COMMUNITY NETWORK
61. ROUTER BROKER HANDLER
62. ROUTER BROKER HANDLER ROUTER BROKER HANDLER APPLICATION DO OFFICIAL SWISS ZONE
63. ROUTER BROKER HANDLER ROUTER BROKER HANDLER ROUTER BROKER HANDLER
64. ROUTER BROKER HANDLER ROUTER BROKER HANDLER ROUTER BROKER HANDLER
65. END-TO-END SECURITY
66. LORAWAN SESSIONS Network Session Key: Message Integrity Application Session Key: Join, Encryption and Decryption Devices Gateways Network Server Application
67. ASYMMETRIC KEYS Network Session Key: Message Integrity Application Session Key: Join, Encryption and Decryption Devices Gateways Network Server Application Dual-band Provisioning, Asymmetric Cryptography
68. ASYMMETRIC KEYS Network Session Key: Message Integrity Application Session Key: Join, Encryption and Decryption Devices Gateways Network Server Application Dual-band Provisioning, Asymmetric Cryptography IoT Platform
69. LINKS https://ttn-ch.herokuapp.com/ https://opennetworkinfrastructure.org/ https://www.thethingsnetwork.org/country/switzerland/