Wi-Fi vs Bluetooth vs LoRaWAN: Choosing an IoT Network
Use Wi-Fi when you have existing coverage and mains power, Bluetooth Low Energy for short-range, phone-connected or battery devices, and LoRaWAN for small, infrequent messages over long distances. There is no single best choice; the trade-off is range against data rate and power.
Comparison (typical ranges, not guarantees)
| Wi-Fi | Bluetooth Low Energy | LoRaWAN | |
|---|---|---|---|
| Typical range | Tens of metres indoors | Roughly 10-100 m | Kilometres in open conditions |
| Data rate | High (megabits) | Around 1-2 Mbit/s | Very low (a few to tens of kbit/s) |
| Power use | High | Low | Very low |
| Infrastructure | Existing access points | Phone or gateway | LoRaWAN gateways and a network server |
| Good for | Cameras, dashboards, firmware updates | Wearables, beacons, phone setup | Soil, water-level, utility meters |
| Poor for | Coin-cell battery devices | Whole-farm coverage | Streaming or frequent large payloads |
Regulatory note for India
LoRaWAN devices in India use the 865-867 MHz band (regional parameters IN865). Check current regulations and your device’s certification before deployment.
Questions that decide it
- How far is the farthest node from infrastructure?
- How often, and how much, does each node send?
- Can the node be mains powered, or must it last months on a battery?
- Who maintains the gateways?
Practise and go deeper
Wi-Fi and BLE are covered hands-on in ESP32, ESP8266 and Wireless IoT. A fuller comparison, including cellular IoT, is in IoT Networking and Wireless Communication. Use MQTT on top of Wi-Fi.
References
- LoRa Alliance, About LoRaWAN: lora-alliance.org
- Bluetooth SIG, Bluetooth Low Energy: bluetooth.com
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