1139  NB-IoT: Comprehensive Review

1139.1 Overview

This comprehensive review covers NB-IoT (Narrowband Internet of Things) technology in depth. The content is organized into focused chapters for easier navigation and learning.

What You’ll Learn:

  • Deployment Options: Three flexible modes for rolling out NB-IoT on existing infrastructure
  • Network Architecture: End-to-end data flow from devices through EPC to applications
  • Technology Selection: When to choose NB-IoT vs LTE-M for your IoT deployment
  • Practical Assessment: Knowledge checks and scenario-based questions

1139.2 Chapter Navigation

TipRecommended Reading Order

Complete these chapters in sequence for the best learning experience:

1139.2.1 1. NB-IoT Deployment Modes

Learn about the three flexible deployment options for NB-IoT:

  • In-Band Mode: Deploy within existing LTE carriers (most common)
  • Guard-Band Mode: Use unused LTE edge spectrum
  • Standalone Mode: Dedicated spectrum (repurposed GSM)
  • Capacity calculations and trade-off analysis

1139.2.2 2. NB-IoT Network Architecture

Understand the end-to-end NB-IoT network:

  • Four-layer architecture: Devices, RAN, EPC, Applications
  • EPC components: MME, S-GW, P-GW, SCEF functions
  • Data flow paths: User plane vs control plane
  • CIoT optimizations for efficient IoT traffic

1139.2.3 3. NB-IoT vs LTE-M Comparison

Make informed technology selection decisions:

  • Specification comparison: Bandwidth, data rate, coverage, mobility
  • Decision framework: When to choose each technology
  • Real-world scenarios: Cold chain, smart metering, asset tracking
  • Common misconceptions about NB-IoT mobility

1139.2.4 4. NB-IoT Knowledge Check

Validate your understanding:

  • Power-saving quizzes: PSM, eDRX, coverage enhancement
  • Scenario-based questions: Deployment, configuration, selection
  • Technology comparison assessments
  • Comprehensive review quiz

1139.3 Prerequisites

Required Background:

Recommended Reading:

1139.4 Quick Reference

NB-IoT vs LTE-M at a Glance:

Feature NB-IoT LTE-M
Bandwidth 180 kHz 1.4 MHz
Data Rate ~250 kbps ~1 Mbps
Coverage (MCL) 164 dB 156 dB
Mobility Stationary Up to 160 km/h
Battery Life 10-15 years 5-10 years
Voice No Yes (VoLTE)
Best For Sensors, meters Wearables, vehicles

Key Concepts:

  • NB-IoT: 3GPP standardized narrowband cellular IoT (Release 13+)
  • PSM: Power Saving Mode - deep sleep with <5 µA current
  • eDRX: Extended DRX - reachable sleep with ~15 µA current
  • MCL: Maximum Coupling Loss - coverage metric
  • SCEF: Service Capability Exposure Function - IoT optimization

1139.5 Related Resources

NoteCross-Hub Connections

1139.6 What’s Next

Start with the first chapter in this review series:

Or explore related technologies: