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SCAP SigFox: A Scalable Communication Protocol for Low-Power Wide-Area IoT Networks.

Halah Alqurashi1, Fatma Bouabdallah1, Enas Khairullah1

  • 1Faculty of Computing and Information Technology, King Abdelaziz University, Jeddah P.O. Box 80200, Saudi Arabia.

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Summary

This study enhances the SigFox Internet of Things (IoT) network by implementing a Slot and Channel Allocation Protocol (SCAP). SCAP reduces collisions and energy use, improving scalability for massive IoT deployments.

Keywords:
Internet of Things (IoT)SigFox technologylow-power wide-area network (LPWAN)scalability

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Area of Science:

  • Wireless communication networks
  • Internet of Things (IoT) technologies
  • Network performance optimization

Background:

  • Internet of Things (IoT) connects billions of devices, requiring specific radio access technologies.
  • Existing Low-Power Wide-Area Network (LPWAN) technologies like SigFox offer low power and long range but face scalability issues due to high collision rates from redundancy.

Purpose of the Study:

  • To improve the scalability of SigFox technology for massive Internet of Things (IoT) deployments.
  • To address the high collision rate inherent in SigFox's Aloha-based protocol.
  • To reduce energy consumption and enhance network reliability.

Main Methods:

  • Modified SigFox's medium access protocol from Aloha to Time Division Multiple Access (TDMA).
  • Utilized orthogonal channels and removed message redundancy.
  • Implemented a Slot and Channel Allocation Protocol (SCAP) for efficient time slot and channel assignment.
  • Conducted performance analysis on simulated networks ranging from 1000 to 10,000 nodes.

Main Results:

  • SCAP SigFox significantly reduced the probability of data collisions compared to the original SigFox.
  • SCAP SigFox demonstrated lower energy consumption per node.
  • The enhanced protocol achieved greater network throughput and a higher Packet Delivery Ratio (PDR).

Conclusions:

  • The Slot and Channel Allocation Protocol (SCAP) effectively enhances SigFox network scalability.
  • SCAP offers a viable solution for massive IoT deployments by optimizing resource utilization and reducing collisions.
  • The proposed modifications lead to a more reliable and efficient IoT network infrastructure.