Hybrid Control of Contention Window and Frame Aggregation for Performance Enhancement in Multirate WLANs
Joint Authors
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-03-18
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Telecommunications Engineering
Abstract EN
The IEEE 802.11 standard has been evolved to support multiple transmission rates in wireless local area networks (WLANs) to cope with diverse channel conditions and to increase throughput.
However, when stations with different transmission rates coexist, the basic channel access mechanism of WLAN, distributed coordination function (DCF), not only fails to assure airtime fairness among competing stations but also decreases overall network throughput, because DCF was designed to provide fair opportunity of channel access, regardless of transmission rate.
As an effective solution to this problem, we propose a hybrid control mechanism that integrates contention window control and frame aggregation.
The former adjusts the size of contention window and differentiates the channel access opportunity depending on the transmission rates of stations.
The latter controls the number of packets in the aggregated frame to tightly assure per-station airtime fairness with the reduced channel access overheads.
Moreover, we derive an analytical model to evaluate the performance of the proposed mechanism in terms of throughput and fairness.
Along with the analysis results, the extensive simulation results confirm that the proposed mechanism significantly increases the overall throughput by about three times compared to the conventional DCF, while assuring airtime fairness strictly.
American Psychological Association (APA)
Adnan, Muhammad& Park, Eun-Chan. 2015. Hybrid Control of Contention Window and Frame Aggregation for Performance Enhancement in Multirate WLANs. Mobile Information Systems،Vol. 2015, no. 2015, pp.1-16.
https://search.emarefa.net/detail/BIM-1072734
Modern Language Association (MLA)
Adnan, Muhammad& Park, Eun-Chan. Hybrid Control of Contention Window and Frame Aggregation for Performance Enhancement in Multirate WLANs. Mobile Information Systems No. 2015 (2015), pp.1-16.
https://search.emarefa.net/detail/BIM-1072734
American Medical Association (AMA)
Adnan, Muhammad& Park, Eun-Chan. Hybrid Control of Contention Window and Frame Aggregation for Performance Enhancement in Multirate WLANs. Mobile Information Systems. 2015. Vol. 2015, no. 2015, pp.1-16.
https://search.emarefa.net/detail/BIM-1072734
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1072734