Time-Critical Underwater Sensor Diffusion with No Proactive Exchanges and Negligible Reactive Floods

— In this paper we study multi-hop ad hoc routing in a scalable Underwater Sensor Network (UWSN), which is a novel network paradigm for ad hoc investigation of the world below the water surface. Unlike existing Underwater Acoustic Networks (UAN), the new UWSN paradigm dispatches large number (in the thousands) of unmanned low-cost sensor nodes to locally monitor and report otherwise not easily accessible underwater events in a time-critical manner. Due to the large propagation latency and very low bandwidth of the acoustic channel, a new protocol stack and corresponding models are required as conventional approaches fail. In particular, we show that neither proactive routing message exchange nor reactive/on-demand flooding is adequate in the challenging new underwater environment. Unlike the terrestrial scenarios, on-demand flooding cannot be both reliable and efficient due to widespread collisions caused by the large propagation delay. On the other hand, as in terrestrial scenari...

• Type: Conference
• Year: 2006
• Where: ISCC
• Authors: Uichin Lee, Jiejun Kong, Joon-Sang Park, Eugenio Magistretti, Mario Gerla
• Keywords: Communications, ISCC 2006, Multi-hop Ad Hoc, Proactive Routing, Proactive Routing Message