An Efficient Topology Discovery Protocol with Node ID Assignment Based on Layered Model for Underwater Acoustic...

Area of Science:

• Marine technology
• Network engineering
• Acoustic communication

Background:

• Underwater acoustic networks (UANs) are crucial for marine surveys and environmental monitoring.
• Nodes in UANs often lack unique IDs and awareness of the overall network structure upon deployment or merging.
• Existing challenges include limited energy, long propagation delays, and the need for efficient topology discovery and ID assignment.

Purpose of the Study:

• To propose an efficient topology discovery protocol (ETDP) for UANs.
• To enable simultaneous network topology discovery and adaptive node ID assignment.
• To address the challenges of limited energy, long delays, and packet collisions in initial network states.

Main Methods:

• ETDP controls the transmission of topology discovery (TD) packets using local timers to prevent collisions.
• The protocol divides the network into layers to ensure orderly TD packet transmission.
• Nodes independently obtain network topology and assign IDs by exploiting received TD packets.

Main Results:

• ETDP successfully completes network topology discovery for all nodes.
• The protocol significantly reduces energy consumption and network delay.
• Unique node IDs are assigned efficiently with reduced overheads.

Conclusions:

• ETDP provides an efficient solution for topology discovery and node ID assignment in UANs.
• The protocol effectively manages packet collisions and optimizes resource usage.
• Simulation results validate the protocol's performance in terms of energy, delay, and overhead reduction.