An Energy-Aware Hybrid ARQ Scheme with Multi-ACKs for Data Sensing Wireless Sensor Networks

Area of Science:

• Computer Science
• Electrical Engineering
• Network Engineering

Background:

• Wireless sensor networks (WSNs) are crucial for edge computing, but face challenges with unreliable wireless links.
• Ensuring reliable communication and maximizing network lifetime are critical performance metrics in WSN applications.

Purpose of the Study:

• To propose an energy-aware hybrid Automatic Repeat-reQuest (ARQ) protocol for WSNs.
• To enhance energy efficiency and network transmission reliability.
• To extend the overall network lifetime.

Main Methods:

• Developed a novel hybrid ARQ scheme where source nodes send data packets without waiting for individual acknowledgements (ACKs).
• Implemented a mechanism for the destination to send multiple ACKs for a batch of received packets to prevent ACK loss.
• Statistically analyzed energy consumption in a flat circle network model using the proposed scheme.

Main Results:

• The proposed hybrid ARQ scheme demonstrates significant energy consumption reduction in WSN nodes.
• The protocol effectively guarantees network transmission reliability.
• Parameter selection strategies were identified to further extend network lifetime.

Conclusions:

• The energy-aware hybrid ARQ protocol offers a viable solution for improving energy efficiency in WSNs.
• The scheme successfully balances network reliability with prolonged network lifetime.
• Simulation results validate the effectiveness of the proposed protocol in reducing node energy consumption and extending network longevity.