title: A MAC Protocol to Support Monitoring of Underwater Spaces.
abstract: Underwater sensor networks are becoming an important field of research, because of their everyday increasing application scope. Examples of their application areas are environmental and pollution monitoring (mainly oil spills), oceanographic data collection, support for submarine geolocalization, ocean sampling and early tsunamis alert. The challenge of performing underwater communications is well known, provided that radio signals are useless in this medium, and a wired solution is too expensive. Therefore, the sensors in these networks transmit their information using acoustic signals that propagate well under water. This data transmission type not only brings an opportunity, but also several challenges to the implementation of these networks, e.g., in terms of energy consumption, data transmission and signal interference. In order to help advance the knowledge in the design and implementation of these networks for monitoring underwater spaces, this paper proposes a MAC protocol for acoustic communications between the nodes, based on a self-organized time division multiple access mechanism. The proposal was evaluated using simulations of a real monitoring scenario, and the obtained results are highly encouraging.
authors.affiliation: Department Electrical and Computers, Universidad Nacional del Sur, CONICET, Bahia Blanca 8000, Argentina. ierms@uns.edu.ar.
authors.forename: Rodrigo
authors.initials: R
authors.lastname: Santos
authors.affiliation: Department Electrical and Computers, Universidad Nacional del Sur, CONICET, Bahia Blanca 8000, Argentina. jadorozco@gmail.com.
authors.forename: Javier
authors.initials: J
authors.lastname: Orozco
authors.affiliation: Computer Science Department, Universidad de Chile, Santiago 8370459, Chile. sochoa@dcc.uchile.cl.
authors.forename: Sergio F
authors.initials: SF
authors.lastname: Ochoa
authors.affiliation: Department of Computer Architecture, Universidad Polit&#233;cnica de Catalunya, Barcelona 08034, Spain. meseguer@ac.upc.edu.
authors.forename: Roc
authors.initials: R
authors.lastname: Meseguer
authors.affiliation: Department Electrical and Computers, Universidad Nacional del Sur, CONICET, Bahia Blanca 8000, Argentina. gmeggly@gmail.com.
authors.forename: Gabriel
authors.initials: G
authors.lastname: Eggly
authors.affiliation: Department of Chemistry, Universidad Nacional del Sur, CIC, Bahia Blanca 8000, Argentina. mpistone@criba.edu.ar.
authors.forename: Marcelo F
authors.initials: MF
authors.lastname: Pistonesi
keywords: MAC protocol; acoustic transmission; underwater monitoring; underwater sensor networks