Modeling and Delay Analysis of Intermittently Connected Roadside Communication Networks

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dc.contributor.author Khabbaz, Maurice J.
dc.contributor.author Fawaz, Wissam F.
dc.contributor.author Assi, Chadi M.
dc.date.accessioned 2016-02-05T08:53:28Z
dc.date.available 2016-02-05T08:53:28Z
dc.date.copyright 2012
dc.date.issued 2016-05-10
dc.identifier.issn 0018-9545 en_US
dc.identifier.uri http://hdl.handle.net/10725/3006
dc.description.abstract Vehicular networks outline a challenging terrestrial application of the emerging delay-tolerant networking (DTN) paradigm where wireless links experience frequent disruptions. Thus, continuous end-to-end paths are unguaranteed. Under such conditions, mobile vehicles present opportunistic relaying capabilities that promote network connectivity, particularly between stationary and isolated roadside units. In this context, we investigate a challenging information-delivery-delay minimization problem. Information is encapsulated into bundles buffered at the source, and vehicles opportunistically transport them to the destination. Consequently, bundles undergo both queueing and transit delays. We propose a probabilistic bundle release scheme (PBRS) under which a roadside unit performs typical Internet-like forwarding where a single bundle is only released to an arriving relatively high-speed vehicle. This ensures a minimized bundle transit. In contrast, under a greedy bundle release scheme (GBRS), a bundle is released to any arriving vehicle, regardless of its speed. Two queueing models are developed to characterize a roadside unit and evaluate its performance under both schemes. A simulation framework is set up to validate these models. Results indicate the inefficiency of the typical Internet packet-like release mechanism as it incurs excessive bundle queueing delays. A bulk bundle release (BBR) extension is proposed as an effective solution. We show that GBRS-BBR outperforms PBRS-BBR. en_US
dc.language.iso en en_US
dc.title Modeling and Delay Analysis of Intermittently Connected Roadside Communication Networks en_US
dc.type Article en_US
dc.description.version Published en_US
dc.author.school SOE en_US
dc.author.idnumber 200602957 en_US
dc.author.woa N/A en_US
dc.author.department Electrical Engineering en_US
dc.description.embargo N/A en_US
dc.relation.journal IEEE Transcations on Vehicular Technology en_US
dc.journal.volume 61 en_US
dc.journal.issue 6 en_US
dc.article.pages 2698-2706 en_US
dc.identifier.doi http://dx.doi.org/10.1109/TVT.2012.2200001 en_US
dc.identifier.ctation Khabbaz, M. J., Fawaz, W. F., & Assi, C. M. (2012). Modeling and delay analysis of intermittently connected roadside communication networks. Vehicular Technology, IEEE Transactions on, 61(6), 2698-2706. en_US
dc.author.email wissam.fawaz@lau.edu.lb
dc.identifier.url http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6202358

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