NDLI: Call Admission Control in IEEE 802.11 WLANs Using QP-CAT

Content Provider	IEEE Xplore Digital Library
Author	Sangho Shin Schulzrinne, H.
Copyright Year	2008
Description	Author affiliation: Dept. of Comput. Sci., Columbia Univ., New York, NY (Sangho Shin; Schulzrinne, H.)
Abstract	As IEEE 802.11 networks in a BSS are increasingly used to carry VoIP, concerns about QoS arise. The overall delay of all VoIP flows drastically increases when the number of VoIP sources approaches the capacity, due to the characteristics of CSMA/CA. We propose a novel call admission control with the Queue size Prediction using Computation of Additional Transmission (QP-CAT) to avoid admitting an excessive number of simultaneous calls. In QP-CAT, an AP can accurately predict the effect of new VoIP flows on the delay of existing VoIP flows by predicting its queue size, before the new VoIP flow is actually admitted. It can be easily extended to support 802.11e so that the AP can predict the effect even when background traffic exists with VoIP traffic under 802.11e.
Starting Page	726
Ending Page	734
File Size	838158
Page Count	9
File Format	PDF
ISBN	9781424420254
ISSN	0743166X
DOI	10.1109/INFOCOM.2008.123
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-04-13
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Call admission control Quality of service Downlink Traffic control Wireless networks Telecommunication traffic Delay estimation Delay effects Protection Admission control
Content Type	Text
Resource Type	Article
Subject	Computer Science Electrical and Electronic Engineering

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