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A Network Coding Based Hybrid ARQ Protocol for Underwater Acoustic Sensor Networks.

Hao Wang1, Shilian Wang2, Eryang Zhang3

  • 1College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China. wanghao08@nudt.edu.cn.

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Summary
This summary is machine-generated.

We developed an energy-efficient protocol for underwater acoustic sensor networks (UASNs) using network coding and hybrid automatic repeat request (NCHARQ). This approach enhances reliability and reduces energy consumption for underwater data transport.

Keywords:
ARQfountain codesnetwork codingunderwater acoustic sensor network

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Area of Science:

  • Marine Engineering
  • Computer Networks
  • Signal Processing

Background:

  • Underwater Acoustic Sensor Networks (UASNs) face significant challenges due to the harsh underwater acoustic channel.
  • Reliable data transport protocols are crucial for the commercial and military applications of UASNs.

Purpose of the Study:

  • To propose an energy-efficient data transport protocol for UASNs.
  • To enhance reliability, efficiency, and availability in underwater communication.

Main Methods:

  • Development of a novel protocol named NCHARQ (Network Coding and Hybrid Automatic Repeat Request).
  • Implementation of an adaptive window length estimation algorithm for optimizing throughput and energy consumption.
  • Adaptive adjustment of the code rate, ensuring environmental insensitivity.

Main Results:

  • NCHARQ significantly reduces energy consumption in UASNs.
  • The protocol achieves a short end-to-end delay.
  • The adaptive algorithm effectively balances throughput and energy usage.

Conclusions:

  • NCHARQ offers a viable solution for reliable and energy-efficient data transport in challenging underwater environments.
  • The adaptive window length estimation enhances protocol performance across varying conditions.
  • The proposed protocol addresses key limitations in current UASN communication.