Big Data through small messages with Sigfox
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Sigfox is a connectivity service, dedicated to the IoT ... And focused on very small messages, up to 12 bytes. How a few bytes can lead to Big Data ? Presentation during the IoT & Big Data Meetup :http://www.meetup.com/fr-FR/Internet-of-Things-Thinkers-Meetup/events/229862142/
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Big Data through small messages with Sigfox
- 1. Big data through small messages IOT & BIG DATA MEET UP - 2016.04.21
- 3. About Sigfox Sigfox is not selling chips Sigfox is not building connected solutions Sigfox has invented a radio protocol Sigfox operates a global network
- 5. Energy efficiency The Sigfox protocol has been designed to maximise energy efficiency Tx: ~20-35 mA during a few seconds (25mW ; 14dB) Key factor: idle consumption (unconnected 99.x% of the time) Idle consumption: a few µA
- 6. Out of the box No configuration, no pairing, no signalisation The network is serving the devices, not the other way round A message is picked up by several base stations ; validation & reduplication are handled by the network
- 7. Very Long Range Best case scenario +100km between transmitter & receiver (base station) Real life A few kms (city) to tens of kms (countryside), depending on the topography
- 8. Outdoor & Indoor Sigfox works well indoor Of course, you need to consider signal attenuation (~20dB)
- 9. Two-way communication Devices can receive updates sent from your application server Each communication is instigated by the device
- 10. Security Each message is signed with a key unique to the device Messages can be encrypted or scrambled No keys exchanged over the network, no handshake Security is an ever ongoing effort
- 11. Radio properties Great tolerance to interferors Jamming resistant Interception is hard: UNB & frequency diversity
- 12. Jammers
- 13. Interferors
- 14. Low cost of communication Small subscription fees Short SW development cycle Low cost HW components
- 15. Small messages Useful payload: 12 bytes Up to 140 times each day 100 bits/s
- 16. Payload examples GPS coordinates (lat x lng) : 6 bytes Temperature: 2 bytes State reporting : 1 byte Heartbeat, update request : 0 byte And … who needs full bytes when 5 bits are enough ?
- 17. Payload examples A (int): 17568 —> 0100010010100000 B (0-32): 17 —> 010001 C (state): 3 —> 10 Frame: 01000100 10100000 01000110 Frame: 0x44 0xA0 0x46 AT$SF=44A046
- 18. More ! 816b1954 | 10000001 01101011 00011001 01010100 10000001 01101011 00011001 01010100 Active mode (Temp) 10000001 01101011 00011001 01010100 Temp. MSB & LSB 10000001 01101011 00011001 01010100 Humidity x2 Temp : 0110011001 = 409 . (409-200) / 8 = 26.125°C Humidity: 01010100 = 84. 84/2 = 42%
- 19. Big Data with 12 bytes SERIOUSLY ?
- 20. Small messages … But a lot of them
- 21. Figures 7 million devices currently registered on the Sigfox network 2025 : estimates ranging from 25 to 50 billion IoT devices
- 23. Why ? Network Operation & Predicted Maintenance New services
- 24. Example Monitoring payload size distribution over time
- 25. Current
- 26. Trend
- 27. We’re hiring Looking for Senior Data Scientist to join our Paris team Get in touch if interested :)
- 28. Thank you ! Nicolas Lesconnec nicolas.lesconnec@sigfox.com twitter: @nlesconnec Q&A time :)