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