IoTMarketi · Guides
IoT Protocol Selection Guide: LoRaWAN, NB-IoT, MQTT, Modbus, Wi-Fi
The right protocol depends on range, power, latency and OT integration. This guide compares the connectivity and messaging options most used in 2026.
Why protocol choice matters
The wrong link budget kills batteries, leaves coverage holes or stalls SCADA integration. In 2026, enterprise IoT is a portfolio, not a single-radio bet.
Quick decision table
| Need | Prefer |
|---|---|
| Long range + low power + private network | LoRaWAN |
| Deep indoor + carrier SIM | NB-IoT / LTE-M |
| Mobile assets, video, high bandwidth | LTE / 5G / industrial router |
| Campus high throughput | Wi-Fi 6 / Ethernet |
| Cloud telemetry | MQTT (most often) |
| PLC / drive / meter | Modbus, often with OPC UA above |
LPWAN: LoRaWAN vs cellular narrowband
- LoRaWAN: You control gateway + network server � strong for campuses, plants, farms and building sensors.
- NB-IoT: Tiny payloads, deep coverage � meters and fixed sensors.
- LTE-M: Better for mobile tracking and lower latency than NB-IoT.
Compare: NB-IoT vs LoRaWAN
Messaging: MQTT
MQTT remains the backbone for intermittent links (QoS, Last Will, low overhead). Edge gateways often translate field buses to MQTT. ? What is MQTT?
OT world: Modbus and OPC UA
OPC UA for semantic models, Modbus for legacy devices. Edge nodes normalize both northbound.
Hardware
- Sensors / LoRaWAN gateways: Milesight, Dragino
- Industrial routers & trackers: Teltonika
- Catalog: Products
Checklist
- Payload size and frequency?
- Latency in seconds or milliseconds?
- Battery or mains?
- How does it join OT systems?
- Security zones considered?
Bottom line
Choose protocols before brands, then assemble matching hardware from IoTMarketi.
FAQ
Frequently Asked Questions
LoRaWAN mi NB-IoT mi?
Kendi aginizi kurmak, lisanssiz band ve uzun pil �mr� istiyorsaniz LoRaWAN; operat�r kapsamasi, derin i� mek�n ve SIM tabanli y�netim istiyorsaniz NB-IoT/LTE-M �ne �ikar.
MQTT bir baglanti teknolojisi midir?
Hayir. MQTT, TCP/IP �zerinde �alisan hafif bir yayinla-abone ol mesajlasma protokol�d�r. Altinda Wi-Fi, Ethernet veya h�cresel olabilir.
Modbus h�l� gerekli mi?
Evet. Bir�ok PLC, saya� ve s�r�c� Modbus konusur. Gateway�ler Modbus�u MQTT veya OPC UA�ya �evirerek buluta tasir.
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