NetCoDer: A Retransmission Mechanism for WSNs Based on Cooperative Relays and Network Coding

Area of Science:

• Computer Science
• Electrical Engineering
• Network Engineering

Background:

• Wireless Sensor Networks (WSNs) face significant challenges due to unreliable communication channels.
• Improving communication reliability in WSNs is crucial for their effective deployment and operation.
• Existing solutions often rely on retransmission techniques, which can be inefficient.

Purpose of the Study:

• To propose a novel scheme, NetCoDer, that integrates cooperative diversity and network coding to enhance WSN reliability.
• To address the inherent unreliability of WSN communication channels.
• To provide a more robust and efficient communication solution for WSNs.

Main Methods:

• The NetCoDer scheme was designed by combining cooperative diversity techniques with network coding principles.
• Performance was evaluated using a combination of experimental setups with real WSN nodes and simulation assessments.
• NetCoDer's effectiveness was benchmarked against state-of-the-art Time Division Multiple Access (TDMA)-based retransmission methods: BlockACK, Master/Slave, and Redundant TDMA.

Main Results:

• The NetCoDer scheme demonstrated a clear improvement in network performance compared to existing retransmission techniques.
• Experimental and simulation results validated the effectiveness of the proposed approach.
• The integration of cooperative diversity and network coding proved beneficial for WSN reliability.

Conclusions:

• The NetCoDer scheme offers a promising solution for improving communication reliability in Wireless Sensor Networks.
• The proposed method outperforms traditional TDMA-based retransmission techniques.
• Future research can explore further optimizations and applications of NetCoDer in various WSN scenarios.