LoRaWAN technical Deep Dive (Semtech)

LoRaWan technology overview covering topics such as message structure, node classes, network capacity and security as seen on Semtech’s site:
Highlights include

Long Range, Low Power  & Small form factor

  • >2km dense urban, >15km suburban,  >1000km Visual Line Of Sight (VLOS)
  • > x3 battery life compared to competing technologies

Scalable Network Capacity

  • Star Network /  Link Rate Adaptation / Fully Scalable Network
  • More than 4M transaction per day per Gateway

Fully bidirectional

  • Acknowledge /Request from user or  from sensor
  • Allows downlink broadcast /multicast
  • Low latency end-device paging

Robust communication

  • Robust to  interference / Coexists with other ISM traffic
  • Robust  to Jamming
  • Suitable for  Mobile , Nomadic & fixed nodes
  • Indoor / Outdoor coverage
  • Systematic encryption/authentication

High accuracy positioning and range

  • Modulation format permits high accuracy localization using Differential Time Of Arrival (DTOA)
  • Not RSSI based, accounts for multi-path and fading

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