1106  Sigfox Fundamentals

1106.1 Sigfox

⏱️ ~45 min total | ⭐⭐ Intermediate | 📋 P09.C10

Sigfox is both a proprietary LPWAN technology and the name of the French company that developed and operates it. Unlike other LPWAN technologies where you can deploy your own network, Sigfox operates as a network operator providing connectivity services globally. Sigfox pioneered the concept of ultra-narrow band (UNB) modulation for IoT, enabling billions of low-power devices to communicate with minimal infrastructure and energy consumption.

NoteKey Takeaway

In one sentence: Sigfox is an ultra-low-power, operator-managed LPWAN that sends tiny messages (12 bytes) over extreme distances with no local infrastructure required.

Remember this rule: Choose Sigfox over LoRaWAN when you need global coverage without building infrastructure, only send small infrequent messages (<140/day), and can accept the operator’s coverage footprint; choose LoRaWAN when you need network control, larger payloads, or coverage in areas Sigfox doesn’t reach.

1106.2 Chapter Overview

This comprehensive guide to Sigfox fundamentals has been organized into four focused chapters for easier learning:

1106.2.1 1. Introduction and Basics

Start here if you’re new to Sigfox. This chapter covers:

  • What is Sigfox and how does it differ from LoRaWAN
  • The 12-byte payload challenge and encoding strategies
  • When to use Sigfox (and when not to)
  • Real-world case study: Barcelona smart waste management
  • Sigfox network architecture overview

Estimated time: ~10 minutes

1106.2.2 2. Scenarios and Common Mistakes

Learn from real-world failures and avoid costly mistakes:

  • What happens when you exceed message limits
  • Coverage dependency risks and mitigation
  • Bidirectional communication constraints
  • 7 common Sigfox deployment mistakes
  • Payload encoding pitfalls (float vs integer)
  • Device registration requirements

Estimated time: ~12 minutes

1106.2.3 3. Technology Deep Dive

Understand the technical foundations:

  • Ultra-Narrow Band (UNB) modulation explained
  • Radio parameters and regional frequency bands
  • Link budget calculations for extreme range
  • Sigfox vs LoRaWAN architectural comparison
  • LPWAN technology decision framework
  • Sigfox Atlas geolocation service

Estimated time: ~12 minutes

1106.2.4 4. Worked Examples and Assessment

Apply your knowledge with practical calculations:

  • Asset tracking message budget calculation
  • Sigfox vs LoRaWAN TCO comparison
  • UNB link budget for 25 km rural deployment
  • Duty cycle and message timing compliance
  • Comprehensive quiz questions with explanations

Estimated time: ~15 minutes

1106.3 Quick Reference

Property Details
Modulation Ultra Narrow Band (UNB), 100 Hz channels
Frequency 868 MHz (Europe), 902 MHz (Americas), 923 MHz (Asia Pacific)
Range 10-50 km (rural), 3-10 km (urban)
Data rate 100 bps uplink, 600 bps downlink
Payload 12 bytes uplink, 8 bytes downlink
Messages 140 uplink + 4 downlink per day
Battery life 10-20 years typical
Coverage 75+ countries (operator-dependent)

1106.4 Learning Path

TipRecommended Reading Order
  1. New to Sigfox? Start with Introduction and Basics
  2. Planning a deployment? Read Scenarios and Mistakes to avoid common pitfalls
  3. Need technical details? Dive into Technology Deep Dive
  4. Ready to apply? Test yourself with Examples and Assessment