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dc.contributor.advisorThompson, John
dc.contributor.advisorLaurenson, David
dc.contributor.authorKim, Jinho D.
dc.date.accessioned2018-06-04T10:13:35Z
dc.date.available2018-06-04T10:13:35Z
dc.date.issued2018-07-04
dc.identifier.urihttp://hdl.handle.net/1842/31055
dc.description.abstractOver the past few decades, wireless local area networks (WLANs) have been widely deployed for data communication in indoor environments such as offices, houses, and airports. In order to fairly and efficiently use the unlicensed frequency band that Wi-Fi devices share, the devices follow a set of channel access rules, which is called a wireless medium access control (MAC) protocol. It is known that wireless devices following the 802.11 standard MAC protocol, i.e. the distributed coordination function (DCF), suffer from packet collisions when multiple nodes simultaneously transmit. This significantly degrades the throughput performance. Recently, several studies have reported access techniques to reduce the number of packet collisions and to achieve a collision free WLAN. Although these studies have shown that the number of collisions can be reduced to zero in a simple way, there have been a couple of remaining issues to solve, such as dynamic parameter adjustment and fairness to legacy DCF nodes in terms of channel access opportunity. Recently, In-Band Full Duplex (IBFD) communication has received much attention, because it has significant potential to improve the communication capacity of a radio band. IBFD means that a node can simultaneously transmit one signal and receive another signal in the same band at the same time. In order to maximize the performance of IBFD communication capability and to fairly share access to the wireless medium among distributed devices in WLANs, a number of IBFD MAC protocols have been proposed. However, little attention has been paid to fairness issues between half duplex nodes (i.e. nodes that can either transmit or receive but not both simultaneously in one time-frequency resource block) and IBFD capable nodes in the presence of the hidden node problem.en
dc.language.isoenen
dc.publisherThe University of Edinburghen
dc.relation.hasversionJ. Kim, D. Laurenson, and J. Thompson. Centralized random backoff for collision resolution in Wi-Fi networks. IEEE Transactions on Wireless Communications, 16(9):5838-5852, September 2017.en
dc.relation.hasversionJ. Kim, D. Laurenson, and J. Thompson. Fair and efficient full duplex MAC protocol based on the IEEE 802.11 DCF. IEEE International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), 90:538-548, March 2016.en
dc.relation.hasversionJ. Kim. Source codes of the network simulator for centralized random backoff in Wi-Fi networks. University of Edinburgh, June 2017. available at http://dx.doi.org/10.7488/ds/2068.en
dc.subjectWi-Fien
dc.subjectdistribution network operatorsen
dc.subjectrandom accessen
dc.subjectcentralized random backoffen
dc.subjectDCFen
dc.subjectdistributed coordination functionen
dc.subject802.11en
dc.subjectmedium access controlen
dc.subjectmultiple accessen
dc.subjectcollisionen
dc.subjectcollision resolutionen
dc.subjectcollision avoidanceen
dc.subjectfairnessen
dc.subjectdeterministic backoffen
dc.titleCentralized random backoff for collision free wireless local area networksen
dc.typeThesis or Dissertationen
dc.type.qualificationlevelDoctoralen
dc.type.qualificationnamePhD Doctor of Philosophyen
dc.rights.embargodate04/07/2019en
dcterms.accessRightsRestricted Accessen


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