NDLI: Network congestion control in ad hoc IEEE 802.11 wireless LAN

Content Provider	IEEE Xplore Digital Library
Author	Dong, Y. Makrakis, D. Sullivan, T.
Copyright Year	2003
Description	Author affiliation: Broadband Wireless & Internetworking Res. Lab., Ottawa Univ., Ont., Canada (Dong, Y.; Makrakis, D.)
Abstract	An IEEE 802.11 based ad hoc wireless LAN (WLAN) is formed by a set of wireless stations communicating directly with each other without using centralized administration. Ad hoc WLANs are prone to network congestion due to the bursty nature of the data traffic, synchronization difficulties in self-coordination, and the dynamics of the wireless channel. Therefore, wireless stations may experience low throughput and long latency under the circumstance of network congestion, which is especially harmful for real-time traffic. In this paper, a set of preliminary simulations and analysis are conducted to obtain a thorough understanding on the origin of network congestion. We then discuss how to capture the syndrome of network congestion. Note that the occupation rate on buffer, which is employed in active queue management (AQM) algorithms such as random early drop (RED) to predict network congestion, is not appropriate in ad hoc WLANs. New mechanisms suitable for a distributed and contention-based wireless networks are needed. We provide some alternative new designs. We use the optimized network (OPNET) simulator to evaluate the performance of the proposed algorithms and assess their ability in terms of supporting the QoS level set by the applications.
Starting Page	1667
Ending Page	1670
File Size	314923
Page Count	4
File Format	PDF
ISBN	0780377818
ISSN	08407789
DOI	10.1109/CCECE.2003.1226229
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-05-04
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless LAN Traffic control Wireless communication Communication system traffic control Throughput Delay Telecommunication traffic Analytical models Wireless networks Level set
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Hardware and Architecture

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