Efficient Resource Scheduling for Multipath Retransmission over Industrial WSAN Systems

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.