NDLI: A Multichain Backoff Mechanism for IEEE 802.11 WLANs

Content Provider	IEEE Xplore Digital Library
Author	Shiang-Rung Ye Yu-Chee Tseng
Copyright Year	1967
Abstract	The distributed coordination function (DCF) of IEEE 802.11 standard adopts the binary exponential backoff (BEB) for collision avoidance. In DCF, the contention window is reset to an initial value, i.e., CWmin, after each successful transmission. Much research has shown that this dramatic change of window size may degrade the network performance. Therefore, backoff algorithms, such as gentle DCF (GDCF), multiplicative increase-linear decrease (MILD), exponential increase-exponential decrease (EIED), etc., have been proposed that try to keep the memory of congestion level by not resetting the contention window after each successful transmission. This paper proposes a multichain backoff (MCB) algorithm, which allows stations to adapt to different congestion levels by using more than one backoff chain together with collision events caused by stations themselves as well as other stations as indications for choosing the next backoff chain. The performance of MCB is analyzed and compared with those of 802.11 DCF, GDCF, MILD, and EIED backoff algorithms. Simulation results show that, with multiple backoff chains and collision events as reference for chain transition, MCB can offer a higher throughput while still maintaining fair channel access than the existing backoff algorithms
Sponsorship	IEEE Vehicular Technology Society
Starting Page	1613
Ending Page	1620
Page Count	8
File Size	351781
File Format	PDF
ISSN	00189545
Volume Number	55
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-09-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless LAN Multiaccess communication Media Access Protocol Collision avoidance Throughput Access protocols Road accidents Wireless sensor networks Degradation Performance analysis wireless local area networks (WLANs) Backoff algorithms medium access control (MAC) multichain backoff (MCB)
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Automotive Engineering Computer Networks and Communications Electrical and Electronic Engineering Aerospace Engineering

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