Minimizing recovery state In geographic ad-hoc routing
Proceedings of the 7th ACM international symposium on Mobile ad hoc networking and computing
State-of-the-art in protocol research for underwater acoustic sensor networks
WUWNet '06 Proceedings of the 1st ACM international workshop on Underwater networks
Using light underwater: devices, algorithms and systems for maritime persistent surveillance
Using light underwater: devices, algorithms and systems for maritime persistent surveillance
Autonomous depth adjustment for underwater sensor networks
Proceedings of the Fifth ACM International Workshop on UnderWater Networks
The challenges of building mobile underwater wireless networks for aquatic applications
IEEE Network: The Magazine of Global Internetworking
Movement assisted-topology control and geographic routing protocol for underwater sensor networks
Proceedings of the 16th ACM international conference on Modeling, analysis & simulation of wireless and mobile systems
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Acoustic communication typically dominates the power usage in underwater sensor networks. As networks underwater have very limited recharging capabilities, this challenges the network's ability to communicate collected data. To balance these conflicting needs, we utilize a sensor network platform with underwater acoustic communication, surface level radio communication, and a depth adjustment system to switch between them. Nodes determine if they should surface to communicate by approximating the network energy usage and data latency given the data transmission size. For a given path, we develop and examine a set of algorithms to select the nodes to rise to communicate the data via radio across the network while taking energy usage into account. We perform a preliminary analysis of the methods and show that for typical networks greedy approaches are nearly as good as centralized approaches, yet require minimal communication overhead and only local information.