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A Survey on LoRa Networking: Research Problems, Current Solutions and Open Issues

Jothi Prasanna Shanmuga Sundaram, Wan Du, Zhiwei Zhao

TL;DR

This survey analyzes LoRa networking as a prominent LPWAN option for IoT, detailing its CSS PHY, LoRaWAN MAC, and the open, server-driven architecture. It presents a taxonomy of research challenges—energy, range, multiple access, error correction, and security—and surveys a broad set of current solutions, including energy harvesting/backscatter, multi-gateway range enhancement, DaRe coding, interference cancellation, RS-LoRa, ADR-based parameterization, and security enhancements. The paper also identifies open issues such as optimal gateway placement, dynamic link coordination, range improvements without heavy hardware changes, and application-aware security, offering a roadmap for practical large-scale LoRa deployments. Overall, the work aims to inform both researchers and practitioners about the state of LoRa, its performance trade-offs, and directions for robust, scalable deployments in real-world IoT scenarios.

Abstract

Wireless networks have been widely deployed for many Internet-of-Things (IoT) applications, like smart cities and precision agriculture. Low Power Wide Area Networking (LPWAN) is an emerging IoT networking paradigm to meet three key requirements of IoT applications, i.e., low cost, large scale deployment and high energy efficiency. Among all available LPWAN technologies, LoRa networking has attracted much attention from both academia and industry, since it specifies an open standard and allows us to build autonomous LPWAN networks without any third-party infrastructure. Many LoRa networks have been developed recently, e.g., managing solar plants in Carson City, Nevada, USA and power monitoring in Lyon and Grenoble, France. However, there are still many research challenges to develop practical LoRa networks, e.g., link coordination, resource allocation, reliable transmissions and security. This article provides a comprehensive survey on LoRa networks, including the technical challenges of deploying LoRa networks and recent solutions. Based on our detailed analysis of current solutions, some open issues of LoRa networking are discussed. The goal of this survey paper is to inspire more works on improving the performance of LoRa networks and enabling more practical deployments.

A Survey on LoRa Networking: Research Problems, Current Solutions and Open Issues

TL;DR

This survey analyzes LoRa networking as a prominent LPWAN option for IoT, detailing its CSS PHY, LoRaWAN MAC, and the open, server-driven architecture. It presents a taxonomy of research challenges—energy, range, multiple access, error correction, and security—and surveys a broad set of current solutions, including energy harvesting/backscatter, multi-gateway range enhancement, DaRe coding, interference cancellation, RS-LoRa, ADR-based parameterization, and security enhancements. The paper also identifies open issues such as optimal gateway placement, dynamic link coordination, range improvements without heavy hardware changes, and application-aware security, offering a roadmap for practical large-scale LoRa deployments. Overall, the work aims to inform both researchers and practitioners about the state of LoRa, its performance trade-offs, and directions for robust, scalable deployments in real-world IoT scenarios.

Abstract

Wireless networks have been widely deployed for many Internet-of-Things (IoT) applications, like smart cities and precision agriculture. Low Power Wide Area Networking (LPWAN) is an emerging IoT networking paradigm to meet three key requirements of IoT applications, i.e., low cost, large scale deployment and high energy efficiency. Among all available LPWAN technologies, LoRa networking has attracted much attention from both academia and industry, since it specifies an open standard and allows us to build autonomous LPWAN networks without any third-party infrastructure. Many LoRa networks have been developed recently, e.g., managing solar plants in Carson City, Nevada, USA and power monitoring in Lyon and Grenoble, France. However, there are still many research challenges to develop practical LoRa networks, e.g., link coordination, resource allocation, reliable transmissions and security. This article provides a comprehensive survey on LoRa networks, including the technical challenges of deploying LoRa networks and recent solutions. Based on our detailed analysis of current solutions, some open issues of LoRa networking are discussed. The goal of this survey paper is to inspire more works on improving the performance of LoRa networks and enabling more practical deployments.

Paper Structure

This paper contains 26 sections, 3 figures, 5 tables.

Table of Contents

  1. Introduction
  2. A Brief technical background of LoRa
  3. Unique properties of LoRa
  4. Existing deployments of LoRa networks
  5. Taxonomy of research problems
  6. Energy Consumption
  7. Communication Range
  8. Multiple Access:
  9. Error Correction
  10. Security
  11. Current Solutions
  12. Energy Consumption
  13. Communication Range
  14. Error Correction
  15. Channel Coding
  16. ...and 11 more sections

Figures (3)

  • Figure 1: LPWAN Network architecture
  • Figure 2: Class A receive windows
  • Figure 3: Taxonomy of LoRa Research Challenges