LoRa Localization: System Design and Performance Analysis (Wireless Networks)

✍ Scribed by Zhiguo Shi, Chaojie Gu, Shibo He, Kang Hu

• Publisher: Springer
• Year: 2024
• Tongue: English
• Leaves: 113
• Edition: 1st ed. 2024
• Category: Library

✦ Synopsis

This book delves deep into the world of low-power Internet of Things (IoT) node positioning, in an era where IoT is revolutionizing connectivity and communication. It focuses on the critical aspect of accurate node positioning, which has transformative potential across various industrial applications. Specifically, this book explores how LoRa (Long Range) technology, known for its long-range wireless capabilities, low power consumption and cost-effectiveness. It can be harnessed to achieve precise and efficient node localization in both indoor and outdoor environments.

In Chapter 1, readers are introduced to the landscape of low-power IoT, providing background information, discussing network architecture and exploring the research landscape surrounding node positioning. Chapter 2 presents a modular hardware platform tailored for IoT applications and delves into wireless positioning techniques. Chapter 3 takes readers on a journey through wide area location using signal flight time and optimization techniques, emphasizing high accuracy, while keeping power consumption low. Chapter 4 showcases a cost-effective LoRa Mesh networking-based positioning system with wide-area coverage capabilities. This book continues by addressing the intricacies of indoor positioning challenges in Chapter 5, leveraging signal arrival angles and antenna array structures for precise localization. Chapter 6 explores fusion localization and tracking through mobile robots, enhancing position estimation and trajectory tracking in diverse environments. Finally, Chapter 7 offers a comprehensive conclusion, summarizing key insights and proposing future research directions in LoRa's fusion positioning for both indoor and outdoor scenarios.

This book is designed for researchers, engineers, and practitioners keen on unlocking the potential of low-power IoT node positioning and contributing to the advancement of IoT technologies. Advanced level students in computer science and electrical engineering interested in this topic will find this book useful as well.

✦ Table of Contents

Preface
Acknowledgements
Contents
Acronyms
List of Figures
List of Tables
1 Introduction
1.1 Background
1.1.1 Internet of Things (IoT)
1.1.2 Low Power Wide Area Network (LPWAN)
1.1.3 Location-Based Internet of Things Services and Industrial Applications
1.2 Current Situation and Challenge
1.2.1 Challenges and Contributions
1.3 Book Organization
References
2 Wireless Localization Model and Hardware Foundation
2.1 LoRa and Its Ranging Engine
2.1.1 LoRa Network Structure
2.1.2 LoRa Nodes Distance Estimation
2.1.3 LoRa Nodes Angle Estimation
2.2 Angle of Arrival (AoA) Estimation
2.3 Hardware
2.3.1 Hardware Platform Design
2.3.1.1 Low-Power Supply Design
2.3.1.2 High Precision Clock Design
2.3.2 Heterogeneous Devices and Protocol Interface Design
2.3.2.1 Sensor Bus Interface Design
2.3.2.2 Heterogeneous Network Protocol Interface Design
Reference
3 LoRa-Based Mobile Localization System
3.1 System Model
3.1.1 System Overview
3.1.2 Localization Model
3.2 Distance and Location Estimation
3.2.1 Distance Estimation
3.2.2 Anchor Location Estimation
3.3 Localization Optimization
3.4 Implementation and Evaluation
3.4.1 System Implementation
3.4.1.1 LoRa Tag Design
3.4.1.2 LoRa Gateway Design
3.4.1.3 Localization Framework Design
3.4.2 Localization Simulations
3.4.2.1 Simulation Results
3.4.3 System Evaluation
3.4.3.1 System Cost
3.4.3.2 Localization Performance
3.4.3.3 Testbed
3.4.3.4 Results
3.4.3.5 System Robustness Evaluation
3.4.3.6 Power Consumption Evaluation
3.5 Summary
References
4 Wide-Area Localization System Based on LoRa Mesh
4.1 Hardware Design
4.2 LoRa Mesh Protocol Design
4.2.1 The Structure of the Mesh Protocol
4.2.2 Route Discovery and Maintenance
4.2.3 Routing Algorithm
4.3 LoRa Ranging and Localization
4.3.1 Localization Workflow
4.3.2 Ranging Algorithm
4.3.3 Localization Algorithm
4.4 Implementation
4.4.1 Control and Visualization Interface
4.4.2 Anchors Deployment
4.5 Evaluation
4.5.1 Ranging Experiment
4.5.2 Positioning Experiment
4.6 Summary
References
5 Enable Angle of Arrival in LoRa for Efficient Indoor Localization
5.1 Problem Formulation and Challenges
5.2 Redesign of LoRa Gateway and Ranging Procedure
5.2.1 Gateway Redesign
5.2.2 Leveraging Ranging Difference
5.2.3 Ranging Procedure Redesign
5.3 Improving AoA Estimation via Rotation
5.3.1 Binary AoA Classification
5.3.2 Virtual Array
5.3.3 AoA Calculation
5.4 Implementation and Applications
5.4.1 Implementation
5.4.2 Applications
5.5 Performance Evaluation
5.5.1 Ranging Difference Estimation
5.5.2 AoA Estimation
5.5.2.1 AoA Estimation in Different Spreading Factors
5.5.2.2 AoA Estimation in Different Environments
5.5.2.3 AoA Estimation for Long-Rang Scenario
5.5.3 NLoS Localization
5.5.4 Power Consumption Evaluation
5.6 Summary
References
6 LoRa-Based Indoor Tracking System for Mobile Robots
6.1 Estimating the AoA
6.1.1 AoA Estimation with an Antenna Array
6.1.2 Minimize Ranging Interval
6.2 Eliminating the Blind Area
6.3 Estimating Target Movement
6.3.1 Target Motion Model
6.3.2 Real-Time Frequency Estimation
6.4 System Implementation
6.5 Performance Evaluation
6.5.1 Indoor Experiments
6.5.1.1 LOS AoA Estimation
6.5.1.2 NLOS AoA Estimation
6.5.1.3 Tracking in a Lab Space
6.5.1.4 Tracking in a Corridor
6.5.2 Deploy Ability Investigation
6.6 Summary
References
7 Conclusion and Future Directions
7.1 Concluding Remarks
7.2 Future Directions