A distributed air-time fair MAC for multi-rate IEEE 80211 networks using multiple distributed coordination functions

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buir.advisorAkar, Nail
dc.contributor.authorKarataş, Fırat
dc.date.accessioned2016-01-08T18:13:42Z
dc.date.available2016-01-08T18:13:42Z
dc.date.issued2010
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.descriptionAnkara : The Department of Electrical and Electronics Engineering and the Institute of Engineering and Sciences of Bilkent University, 2010.en_US
dc.descriptionThesis (Master's) -- Bilkent University, 2010.en_US
dc.descriptionIncludes bibliographical references leaves 48-50.en_US
dc.description.abstractIn a multi-rate IEEE 802.11 network, the conventional Distributed Coordination Function (DCF) Medium Access Control (MAC) aims to ensure max-min throughput fairness and equal channel access in scenarios with multiple nodes, while failing to satisfy air-time fairness. Consequently, nodes that have relatively poor channels or longer packets to transmit invade the channel substantially more than others, hence decreasing the throughput of nodes which have better channels or shorter packets. This phenomenon is known as the performance anomaly problem in the existing literature. In this thesis, we propose a novel distributed air-time fair algorithm to cope with the performance anomaly problem without having to change the conventional IEEE 802.11 DCF MAC. In the proposed algorithm, each node in the system runs multiple instances of the conventional IEEE 802.11 DCF back-off algorithm where the number of instances for the particular node is calculated independently from other nodes using only local information such as packet lengths and transmission rates. Both analytical and simulationbased results are provided to validate the effectiveness of the distributed air-time fair algorithm we propose.en_US
dc.description.degreeM.S.en_US
dc.description.statementofresponsibilityKarataş, Fıraten_US
dc.format.extentx, 50 leavesen_US
dc.identifier.itemidB122451
dc.identifier.urihttp://hdl.handle.net/11693/15115
dc.language.isoEnglishen_US
dc.publisherBilkent Universityen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectIEEE 802.11 Distributed Coordination Function (DCF) MACen_US
dc.subjectPerformance anomalyen_US
dc.subjectMulti-rate wireless networken_US
dc.subjectAirtime fairnessen_US
dc.subject.lccTK5105.78 .K37 2010en_US
dc.subject.lcshIEEE 802.11 (Standard)en_US
dc.subject.lcshLocal area networks (Computer networks)--Standard.en_US
dc.subject.lcshWireless communication systems--Standard.en_US
dc.titleA distributed air-time fair MAC for multi-rate IEEE 80211 networks using multiple distributed coordination functionsen_US
dc.typeThesisen_US

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