1. LoRaWAN The Internet of Things
in the context of...
Nate Argetsinger, Rohan Paul, David Hodgson

2. LoRaWAN The Internet of Things
in the context of...
Nate Argetsinger, Rohan Paul, David Hodgson

3. LoRaWAN The Internet of Things
in the context of...
Nate Argetsinger, Rohan Paul, David Hodgson

4. LoRaWAN The Internet of Things
in the context of...
Nate Argetsinger, Rohan Paul, David Hodgson

5. History and Context What is IoT today? A big chunk of this is RF
Cellular
Wifi
Bluetooth
ANT
Proprietary Implementations
Many others..
Network topologies increasing in complexity...
6LoWPAN the direct result of increasing requirements

8. “LoRa is a PHY layer implementation and is agnostic with respect to higher-layer implementations.”
Quote from Semtech “LoRa Modulation Basics” paper:

9. High Power Low Power Data Rate LoRa Range WiFi GSM/CDMA AKA.. Cellular
ANT
Bluetooth Low Energy
Zigbee,
Thread,
Zwave
LoRa
NFC
In yo Face
In a Household
In a City
Range
(centimeters)
(meters)
(kilometers)

10. 30mW

11. Real World Applications
Metering
Security systems
Maintaining automation systems
Smart City
Why lora is necessary: why other techs wont work

12. Hierarchy of Communication
Generally star of star topology
Cloud-based Network Controllers
Long range Gateways
Multitech Conduit ~ $300
Can have up to a million nodes
End-node chips
Microchip RN 2483 ~ $15
Can transmit data up to 5 km in city
Can last up to 10 years
MicroChip and SemTech
Link labs and MultiTech

13. MicroChip RN 2483 First LoRa module to pass LoRaWAN certification
ASCII communication via UART
MCU for communicating with other end nodes
Operates at 3.6V in range MHz
-148 dBm sensitivity at 0.1% BER
Only 0.5 – 25 mW signal power output
How all the nodes communicate
More in slides about how the range/protocol work

14. LoRa Encoding Scheme Frequency Modulation Frequency-shift Keying (FSK)
~300 kbps
Chirp
~11 kbps
-couple kinds of signal modulation
-chirp is what makes Lora more useful because…

15. Chirp Frequency modulation over interval
Low sensitivity (still distinguishable 20dB below noise floor!)
Distinguish between devices
Shannon-Hartley:
LoRa distinguishable 20dB below noise floor!!
C = bitrate

16. Applications - Possible Implementation
Multitech
Conduit
LoRa Accessory Kit

17. Applications - Possible Implementation
Compatible with ARM mbed for quick development
Manage Teams and Respositories
Online Compiler

18. Applications - Possible Implementation
Online Compiler

19. Applications - Possible Implementation
Drag the .bin file directly onto your mDot via USB

20. Applications - Possible Implementation
IBM Node Red to develop server-side implementation

21. Thanks for listening! Questions?
More low level: Talk about chirp and why it makes this cool
Usability and cost
Datarate at 2km?
What is low power?