QUO VADIS: QoS-aware Underwater Optimization Framework for Inter-vehicle Communication using Acoustic Directional Transducers | The NSF Cloud and Autonomic Computing Center at Rutgers

Title	QUO VADIS: QoS-aware Underwater Optimization Framework for Inter-vehicle Communication using Acoustic Directional Transducers
Publication Type	Conference Paper
Year of Publication	2011
Authors	Chen, B, Pompili, D
Conference Name	Proc. of IEEE Conference on Sensor, Mesh and Ad Hoc Communications and Networks (SECON)
Date Published	June
Conference Location	Salt Lake City, UT, USA
Abstract	Underwater acoustic communications consume a sig- nificant amount of energy due to the high transmission power (10 − 50 W) and long data packet transmission times (0.1 − 1 s). Mobile Autonomous Underwater Vehicles (AUVs) can conserve energy by waiting for the ‘best’ network topology configuration, e.g., a favorable alignment, before starting to communicate. Due to the frequency-selective underwater acoustic ambient noise and high medium power absorption – which increases exponentially with distance – a shorter distance between AUVs translates into a lower transmission loss and a higher available bandwidth. By leveraging the predictability of AUV trajectories, a novel solution is proposed that optimizes communications by delaying packet transmissions in order to wait for a favorable network topology (thus trading end-to-end delay for energy and/or throughput). In addition, the solution proposed – which is implemented and compared with other solutions using an emulator that inte- grates underwater acoustic WHOI Micro-Modems – exploits the frequency-dependent radiation pattern of underwater acoustic transducers to reduce communication energy consumption by adjusting the transducer directivity on-the-fly.

Document:

QuoVadis_SECON_2011.pdf

The National Science Foundation Dept of the Navy Science and Technology Department of Homeland Security

Theme by Danetsoft and Danang Probo Sayekti inspired by Maksimer