Scheduled MAC in Beacon Overlay Networks for Underwater Localization and Time-Synchronization

W.A.P. van Kleunen, Nirvana Meratnia, Paul J.M. Havinga

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    6 Citations (Scopus)


    In this article we introduce a MAC protocol designed for underwater localization and time-synchronisation. The MAC protocol assumes a network of static reference nodes and allows blind nodes to be localized by listening-only to the beacon messages. Such a system is known to be very scalable. We show localization and time-synchronization algorithms can be designed for listen-only blind nodes by adapting the equations from GPS. We extend the set of GPS equations with angular information to reduce the number of beacons a blind node has to receive before it can determine its position. We evaluate scheduled and unscheduled communication for sending reference-beacon message using simulation mechanisms. Our experimental results show that when energy-consumption of the beacons is of concern or when the modulation rate is low (≤ 1kbps), scheduled communication is preferred. For systems which are not concerned with the energy-consumption of the beacons, unscheduled communication delivers more messages to the blind-nodes and localization and time-synchronization are performed faster in case of high modulation rates (5kbps and 10kbps).
    Original languageUndefined
    Title of host publicationThe Sixth ACM International Workshop on Underwater Networks (WUWNet)
    Place of PublicationNew York
    PublisherAssociation for Computing Machinery (ACM)
    Number of pages5
    ISBN (Print)978-1-4503-1151-9
    Publication statusPublished - 1 Dec 2011
    EventSixth ACM International Workshop on Underwater Networks, WUWNet 2011 - Seattle, WA, USA
    Duration: 1 Dec 20112 Dec 2011

    Publication series



    WorkshopSixth ACM International Workshop on Underwater Networks, WUWNet 2011
    Other1-2 December 2011


    • METIS-281649
    • EWI-21011
    • IR-78971

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