Performance Study of Block ACK and Reverse Direction in IEEE 802.11n Using a Markov Chain Model

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aut.relation.endpage179
aut.relation.journalJournal of Network and Computer Applicationsen_NZ
aut.relation.startpage170
aut.relation.volume78en_NZ
aut.researcherGutierrez, Jairo
dc.contributor.authorHossain, MAen_NZ
dc.contributor.authorSarkar, NIen_NZ
dc.contributor.authorGutierrez, Jen_NZ
dc.contributor.authorLiu, Wen_NZ
dc.date.accessioned2017-06-06T03:14:32Z
dc.date.available2017-06-06T03:14:32Z
dc.date.copyright2017-01-15en_NZ
dc.date.issued2017-01-15en_NZ
dc.description.abstractIEEE 802.11n networks are widely used in home and corporate network environments because they offer high-speed wireless Internet access at relatively low-cost. The 802.11n standard introduced several key features including Block acknowledgement (ACK) and reverse direction (RD) data transmission for enhanced system performance. An in-depth study of 802.11n system capacity for Block ACK mechanisms (both protected and unprotected) and RD data flows is required to assist optimum planning and design of such systems in view of the limited wireless channel capacity. In this paper we study the interdependencies of Block ACK and RD mechanisms using a discrete bi-directional Markov chain model under non-saturated traffic loads. We present a mathematical model to derive throughput, delay, and packet loss probability for both protected and unprotected Block ACKs under varying loads. We validate the model using MATLAB based numerical studies. Results obtained show that the combined effect of protected Block ACK and RD flows has a positive impact on system performance. However, unprotected Block ACK wastes transmission opportunity (TXOP) especially in collisions and therefore degrades the system performance. Our findings reported in this paper provide some insights into the performance of 802.11n with respect to Block ACK and RD methods. This study may help network researchers and engineers in their contribution to the development of next generation wireless LANs such as IEEE 802.11ac.en_NZ
dc.identifier.doi10.1016/j.jnca.2016.11.029en_NZ
dc.identifier.issn1084-8045en_NZ
dc.identifier.issn1095-8592en_NZ
dc.identifier.urihttps://hdl.handle.net/10292/10521
dc.languageengen_NZ
dc.publisherElsevieren_NZ
dc.relation.urihttp://www.sciencedirect.com/science/article/pii/S108480451630296X
dc.rightsCopyright © 2017 Elsevier Ltd. All rights reserved. This is the author’s version of a work that was accepted for publication in (see Citation). Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. The definitive version was published in (see Citation). The original publication is available at (see Publisher's Version).
dc.rights.accessrightsOpenAccessen_NZ
dc.subjectBlock ACKen_NZ
dc.subjectDistributed coordination functionen_NZ
dc.subjectMarkov chainen_NZ
dc.subjectMedium access controlen_NZ
dc.subjectReverse directionen_NZ
dc.titlePerformance Study of Block ACK and Reverse Direction in IEEE 802.11n Using a Markov Chain Modelen_NZ
dc.typeJournal Article
pubs.elements-id217537
pubs.organisational-data/AUT
pubs.organisational-data/AUT/Design & Creative Technologies
pubs.organisational-data/AUT/Design & Creative Technologies/Engineering, Computer & Mathematical Sciences
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