文章基本信息

标题：DDFC: Decentralized Delay Fluctuation Control Algorithm for IEEE802.11-based Wireless LANs
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作者：Hiroyuki Yamada ; Hiroyuki Morikawa ; Tomonori Aoyama 等
期刊名称：Information and Media Technologies
电子版ISSN：1881-0896
出版年度：2006
卷号：1
期号：1
页码：533-544
DOI：10.11185/imt.1.533
出版社：Information and Media Technologies Editorial Board
摘要：Our target is to support both small delay and small delay fluctuation of real-time traffic in IEEE802.11-based wireless LANs by using a decentralized manner. Several previous researches which aimed at supporting real-time traffic in IEEE802.11 wireless LANs developed decentralized control mechanisms achieving small delay of real-time traffic by differentiating real-time traffic from non-real-time traffic, but they cannot achieve small delay fluctuation because of the burst feature of the IEEE802.11 backoff mechanism. We propose a decentralized control mechanism for suppressing delay fluctuation in IEEE802.11-based wireless LANs. Our main proposal is a new backoff algorithm, called decentralized delay fluctuation control (DDFC), which can suppress delay fluctuation in a fully decentralized manner. DDFC can be easily used in IEEE802.11-based wireless LANs by replacing the current backoff algorithm of IEEE802.11 with DDFC. We examine the performance of DDFC, which is assumed to be used for real-time traffic in an IEEE802.11-based wireless LAN, by simulation. The results of computer simulation confirm that we can achieve not only small delay but also small delay fluctuation of real-time traffic in IEEE802.11-based wireless LANs by controlling real-time traffic according to DDFC.