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Efficient Resource Scheduling for Multipath Retransmission over Industrial WSAN Systems.

Hongchao Wang1, Jian Ma2, Dong Yang2

  • 1School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China. hcwang@bjtu.edu.cn.

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|September 25, 2019
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Summary

This study introduces an efficient resource scheduling algorithm for wireless sensor-actuator networks (WSANs) to enhance multipath retransmission. The new method improves efficiency and schedulability in industrial automation without compromising reliability.

Keywords:
Wireless Sensor and Actuator Networks (WSANs)monitoring and control systemmultipath retransmissionrealtime wireless communicationresource scheduling

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Area of Science:

  • Industrial Automation
  • Wireless Communication Networks
  • Real-time Systems

Background:

  • Wireless Sensor-Actuator Networks (WSANs) are increasingly adopted in industrial automation, presenting new challenges for wireless control systems.
  • Existing research on WSANs primarily focuses on reliability and real-time performance, often overlooking resource scheduling efficiency, especially with diverse data sampling rates.
  • Multipath retransmission with multiple channels is crucial for deterministic wireless communication in WSANs.

Purpose of the Study:

  • To propose an efficient resource scheduling algorithm for multipath retransmission in WSANs.
  • To enhance the efficiency and schedulability of slot and channel resource utilization.
  • To address the limitations of existing approaches in handling diverse data sampling rates within WSANs.

Main Methods:

  • Developed an efficient resource scheduling algorithm for multipath retransmission in WSANs.
  • Incorporated Clear Channel Assessment (CCA)-Embedded slot and Multiple sinks with Rate Monotonic (CEM-RM) scheme.
  • Reduced the number of collisions through the proposed scheduling approach.

Main Results:

  • Simulated and hardware-implemented the proposed algorithm.
  • Verified performance in a real industrial environment.
  • Demonstrated significant improvement in schedulability without compromising reliability and real-time performance.

Conclusions:

  • The proposed CEM-RM algorithm effectively improves resource scheduling efficiency in WSANs.
  • The algorithm enhances schedulability for multipath retransmission in industrial automation.
  • Achieved better performance in real-world industrial settings, validating its practical applicability.