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General Information
    • ISSN: 1793-8244
    • Frequency: Semiyearly
    • DOI: 10.18178/JACN
    • Editor-in-Chief: Dr. Ka Wai Gary Wong
    • Executive Editor: Ms. Nina Lee
    • Abstracting/ Indexing: EI (INSPEC, IET),  Electronic Journals Library, Ulrich's Periodicals Directory, International Computer Science Digital Library (ICSDL), ProQuest, and Google Scholar.
    • E-mail: jacn@ejournal.net
Dr. Ka Wai Gary Wong
Division of Information and Technology Studies, Faculty of Education, The University of Hong Kong.
It's a honor to serve as the editor-in-chief of JACN. I'll work together with the editors and reviewers to help the journal progress
JACN 2015 Vol.3(2): 106-113 ISSN: 1793-8244
DOI: 10.7763/JACN.2015.V3.150

Improving Throughput and QoS with IEEE 802.11e

Takumi Sanada, Xuejun Tian, Takashi Okuda, and Tetsuo Ideguchi
Abstract—WLANs have become increasingly popular and widely deployed. The MAC protocol is one of the important technology of the WLAN and affects communication efficiency directly. In this paper, focusing on MAC protocol, we propose a novel protocol that network nodes dynamically optimize their backoff process to achieve high throughput while supporting satisfied QoS. The total throughput decreases heavily and cannot guarantee QoS under a high traffic load, which needs to be improved. Through theoretical analysis, we find that the average idle interval can represent current network traffic load and can be used together with estimated number of nodes for setting optimal CW. Since necessary indexes can be obtained through direct measurement from channel, our scheme will not increase any added load to networks. Through simulation comparison with conventional method, we show that our scheme can greatly enhance the throughput and the QoS no matter the network is in saturated or non-saturated case, while maintaining good fairness.

Index Terms—WLANs, MAC, EDCA, throughput.

The authors are with the School of Information Science and Technology, Aichi Prefectural University, Japan (e-mail: im141008@cis.aichi-pu.ac.jp, tan@ist.aichi-pu.ac.jp, okuda@ist.aichi-pu.ac.jp, ideguchi@ist.aichi-pu.ac.jp).


Cite:Takumi Sanada, Xuejun Tian, Takashi Okuda, and Tetsuo Ideguchi, "Improving Throughput and QoS with IEEE 802.11e," Journal of Advances in Computer Networks vol. 3, no. 2, pp. 106-113, 2015.

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