Retransmission Avoidance for Reliable Data Delivery in Underwater WSNs.

Area of Science:

• Computer Science
• Electrical Engineering
• Oceanography

Background:

• Underwater wireless sensor networks (UWSNs) face challenges in energy-efficient and reliable data delivery due to resource constraints.
• Traditional re-transmission methods in UWSNs lead to increased energy consumption, communication overhead, network congestion, and reduced packet delivery rates.
• The 'energy hole' problem, where nodes near the sink deplete their energy faster, is a critical issue affecting network longevity.

Purpose of the Study:

• To propose an adaptive forwarding layer multipath power control routing protocol for UWSNs.
• To reduce energy dissipation and enhance data reliability in resource-constrained underwater networks.
• To mitigate the energy hole problem and extend the overall network lifetime.

Main Methods:

• Utilized a tree-based topology to direct multiple copies of data packets towards the surface via cross nodes.
• Implemented an adaptive multipath power control strategy for selecting low-noise communication paths.
• Incorporated neighbor information of potential forwarder nodes to optimize path selection and reduce energy expenditure.

Main Results:

• The proposed protocol significantly reduces energy dissipation compared to existing schemes.
• Achieved substantial improvements in data reliability, measured by the packet received ratio (PRR).
• Demonstrated superior performance in terms of energy efficiency and network lifetime extension.

Conclusions:

• The adaptive forwarding layer multipath power control routing protocol effectively addresses energy conservation and data reliability in UWSNs.
• The tree-based topology and low-noise path selection contribute to overcoming the limitations of traditional routing approaches.
• The proposed method offers a promising solution for enhancing the performance and longevity of underwater wireless sensor networks.