NDLI: Distributed flexible channel assignment in WLANs

Content Provider	IEEE Xplore Digital Library
Author	Chih-Cheng Hsu Yi-An Liang Gomez, J.L.G. Cheng-Fu Chou Ching-Ju Lin
Copyright Year	2013
Description	Author affiliation: Dept. of Comput. Sci. & Inf. Eng., Nat. Taiwan Univ., Taipei, Taiwan (Chih-Cheng Hsu; Yi-An Liang; Gomez, J.L.G.; Cheng-Fu Chou) \|\| Res. Center for IT Innovation, Acad. Sinica, Taipei, Taiwan (Ching-Ju Lin)
Abstract	Flexible channels enable Access Points (AP) and clients to determine channel widths and their center frequencies. The key challenge in flexible channels is how to determine proper channel width and center frequency for each link demands such that the overall system throughput could be improved. In this work, we introduce a distributed flexible channel assignment algorithm, DFCA. Different from prior researches, DFCA does link-based channel assignment instead of AP-based or packet-based. This is because that the packet-based method could incur heavy overhead, while the AP-based method is not able to determine the interfering relation between links precisely. In addition, the transmission weight of a link is proposed; with the help of the transmission weight, channel width, center frequency and interference relation to neighboring nodes, DFCA is able to accurately predict that link throughput prior to the channel assignment. Results show that DFCA could outperform traditional fixed channel assignment approaches and the AP-based flexible channel assignment algorithm. Even compared with FLUID[1], which is a packet-based channel assignment approach with assist of a central controller, DFCA is able to achieve comparable (at least 93%) throughput by using only local information rather than global knowledge.
Starting Page	493
Ending Page	498
File Size	295530
Page Count	6
File Format	PDF
ISBN	9781467359382
ISSN	15253511
e-ISBN	9781467359399
e-ISBN	9781467359375
DOI	10.1109/WCNC.2013.6554613
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-04-07
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Throughput Interference Fluids Channel estimation Algorithm design and analysis Prediction algorithms Wireless LAN wireless LANs flexible channel adaptive channel width channel assignment
Content Type	Text
Resource Type	Article

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