NDLI: Collision Detection based on RE Energy Duration in IEEE 802.11 Wireless LAN

Content Provider	IEEE Xplore Digital Library
Author	Ji-Hoon Yun Seung-Woo Seo
Copyright Year	2006
Description	Author affiliation: EECS, Seoul Nat. Univ. (Ji-Hoon Yun; Seung-Woo Seo)
Abstract	The standard backoff mechanism of 802.11 wireless LAN (WLAN) increases the contention window when a transmission failure occurs in order to alleviate contentions in a WLAN. In addition, many proposed schemes for 802.11 WLAN behave adaptively to transmission failures. Transmission failures in WLANs occur mostly by two causes: collision and channel noise. However, in 802.11 WLAN, a station cannot know the cause of a transmission failure, thus the adaptive schemes assume the ideal situation in which all transmission failures occur by only one of two causes. For this reason, they may behave erroneously in a real world where transmission failures occur by both causes. In this paper, we propose a novel scheme to detect collision, which utilizes transmission time information and RF energy duration on the channel. By detecting collisions, a station can differentiate the causes of transmission failures and the adaptive schemes can operate correctly by using the detection information. We also model the bandwidth overhead and detection probability of the proposed scheme mathematically. Through the simulation, we show that the performance of the automatic rate fallback link adaptation algorithm can be improved by more than 500% with the proposed scheme when the number of stations in a basic service set is 10
Starting Page	1
Ending Page	6
File Size	2793458
Page Count	6
File Format	PDF
ISBN	0780395751
DOI	10.1109/COMSWA.2006.1665235
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-01-08
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless LAN Local area networks Bandwidth Collision avoidance Radio frequency Mathematical model Wireless communication Media Access Protocol Multiaccess communication Propagation losses collision detection wireless LAN 802.11
Content Type	Text
Resource Type	Article

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