Analysis of Clock Synchronization Accuracy and Energy Consumption in Underwater Acoustic Sensor Networks

Résumé fourni par la source

Underwater Acoustic Sensor Networks (UASNs) are gaining attention for their vital roles in military oceanography, underwater exploration, and marine resource development. Un-derwater sensor nodes are typically powered by batteries, with deployment and replacement presenting challenges. At the same time, periodic clock synchronization is required to ensure the normal operation of network collaboration. However, achieving higher synchronization accuracy often means more information exchange, whereas lower accuracy results in increased node windowing time, leading to higher energy consumption. This paper investigates the relationship between clock synchronization accuracy and energy consumption in UASNs. It presents a model for this relationship, considering node mobility. Using the Cramér-Ran lower bound as the lower bound for unbiased estimation, simulation investigations were conducted to explore the relationship between synchronization accuracy and energy consumption. The results show a tradeoff between synchronization accuracy and energy consumption, suggesting existence of an optimal synchronization interval that minimizes energy usage while maintaining accuracy.

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