DSpace
 

DSpace at IIT Bombay >
IITB Publications >
Proceedings papers >

Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/100/2326

Title: Feedback based distributed admission control in 802.11 WLANs
Authors: PATIL, P
MATHUR, V
APTE, V
MOUDGALYA, K
Keywords: mac
Issue Date: 2009
Publisher: IEEE
Citation: 2009 IEEE 34TH CONFERENCE ON LOCAL COMPUTER NETWORKS (LCN 2009),293-296
Abstract: A distributed connection admission control (CAC) scheme where stations independently admit or reject flows based on channel utilization threshold is easy to implement for WLANs. However, owing to variable protocol capacity, the advisable threshold also is variable, limiting the efficacy of fixed threshold based CAC. If the admission threshold is tuned to reflect the current protocol capacity, better throughput can be obtained while avoiding WLAN overload. In this paper, we propose a feedback based scheme to tune the utilization threshold for admission. We select he performance metric used for feedback, derive the system model from empirical data, and use control theory to design a feedback controller. Further, we present an analytical model and heuristics using which the controller can be adapted to work under diverse operating scenarios. Simulation results of proportional and proportional-integral controllers in OPNET suggest that the feedback based CAC is able to avoid WLAN overload and achieve high throughput despite large changes in protocol capacity.
URI: http://dx.doi.org/10.1109/LCN.2009.5355091
http://dspace.library.iitb.ac.in/xmlui/handle/10054/15560
http://hdl.handle.net/100/2326
ISBN: 978-1-4244-4488-5
ISSN: 0742-1303
Appears in Collections:Proceedings papers

Files in This Item:

File Description SizeFormat
Feedback based distributed .pdf243.93 kBAdobe PDFView/Open
View Statistics

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback