OEC-MAC: A Novel OFDMA Based Efficient Cooperative MAC Protocol for VANETS

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dc.authoridhttps://orcid.org/0000-0002-2080-5485en_US
dc.contributor.authorKarabulut, Muhammet Ali
dc.contributor.authorShah, A. F. M. Shahen
dc.contributor.authorİlhan, Hacı
dc.date.accessioned2020-07-08T20:01:37Z
dc.date.available2020-07-08T20:01:37Z
dc.date.issued2020en_US
dc.departmentMühendislik ve Mimarlık Fakültesien_US
dc.description.abstractIn vehicular ad hoc networks (VANETs), mobility between vehicles can cause rapid topology changes with frequent disconnections, which result in collisions and packet losses that make communications unstable. Alternatively, cooperative transmission can increase the reliability of communication by eliminating these problems in VANETS. In heavy traffic conditions, carrier sense multiple access with collision avoidance (CSMA/CA) suffers from collision, and it is not effective when high data rate is required. Therefore, orthogonal frequency division multiple access (OFDMA) is proposed. With the use of OFDMA, throughput is increased and delay is decreased by reducing the probability of collision in high traffic scenario. In this study, a novel OFDMA based efficient cooperative MAC protocol (OEC-MAC) is proposed for VANETs. Subcarrier channels assignment and access mechanisms are provided. The mechanism is presented not only for choosing the appropriate transmission mode but also for selecting the optimum relay. New control messages are defined to support cooperative communication. The performance of OEC-MAC protocol is examined by providing analytical analysis based on Markov chain model. Numerical results are demonstrated, which reveal that OEC-MAC protocol ensures a remarkable increase in throughput and also satisfies the strict delay requirement of 100 ms in VANETs for safety messages (sm). In addition, communication reliability is increased by reducing the packet dropping rate (PDR). Numerical results are compared with existing protocols, and a quantitative comparison is provided. It has been seen form results that proposed OEC-MAC protocol is better than existing schemes, especially under heavy traffic scenarios.en_US
dc.description.sponsorshipThis work was supported by the Scientific Research Projects Coordinators of Yildiz Technical University under Grant FDK-2018-3405.en_US
dc.identifier.doi10.1109/ACCESS.2020.2995807en_US
dc.identifier.endpage94677en_US
dc.identifier.issn2169-3536
dc.identifier.scopus2-s2.0-85085969376en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage94665en_US
dc.identifier.urihttps://hdl.handle.net/11363/2300
dc.identifier.urihttps://doi.org/
dc.identifier.volume8en_US
dc.identifier.wosWOS:000541126100013en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USAen_US
dc.relation.ispartofIEEE ACCESSen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/us/*
dc.subjectRelaysen_US
dc.subjectMedia Access Protocolen_US
dc.subjectVehicular ad hoc networksen_US
dc.subjectReliabilityen_US
dc.subjectDelaysen_US
dc.subjectOFDMen_US
dc.subjectCooperative communicationen_US
dc.subjectIEEE 802en_US
dc.subject11pen_US
dc.subjectMACen_US
dc.subjectOFDMAen_US
dc.subjectVANETen_US
dc.subjectPERFORMANCEen_US
dc.subjectDIVERSITYen_US
dc.subjectACCESSen_US
dc.subjectSYSTEMen_US
dc.subjectLTEen_US
dc.titleOEC-MAC: A Novel OFDMA Based Efficient Cooperative MAC Protocol for VANETSen_US
dc.typeArticleen_US

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