Paper Info
Title
Gaussian Approximation Based Admission Control for Variable Bit Rate Traffic in IEEE 802.11e WLANs
Abstract
For QoS requirements of real-time traffic, IEEE 802.11 working group introduces a QoS-aware channel access mechanism, called hybrid coordination function (HCF), which consists of contention-based enhanced distributed channel access (EDCA) and contention-free HCF controlled channel access (HCCA). The TXOP allocation and the admission control units of the HCCA reference scheduler are only appropriate for constant bit rate (CBR) flows. It may result in serious packet loss for variable bit rate (VBR) flows. In this paper, we propose a simple admission control algorithm which adopts Gaussian distribution to approximate VBR traffic. Numerical results obtained from computer simulations show that our proposed algorithm can effectively and efficiently allocate transmission opportunity (TXOP) durations to QoS-enhanced stations (QSTAs) to guarantee a predefined packet loss probability. Moreover, our proposed scheme can easily handle multiple VBR flows of the same QSTA to get the advantage of multiplexing gain.
Year
DOI
Venue
2007
10.1109/WCNC.2007.690
WCNC
Keywords
Field
DocType
wlan,gaussian approximation,approximation theory,variable bit rate traffic,vbr traffic,admission control,gaussian distribution,packet loss probability,qos enhanced stations,telecommunication traffic,ieee 802.11e,wireless lan,packet loss,constant bit rate,working group,variable bit rate,computer simulation,quality of service
Admission control,Computer science,Constant bitrate,Computer network,Packet loss,Communication channel,Quality of service,Real-time computing,IEEE 802,Multiplexing,Variable bitrate
Conference
ISSN
ISBN
Citations 
1525-3511 E-ISBN : 1-4244-0659-5
1-4244-0659-5
2
PageRank 
References 
Authors
0.40
1
3
Name
Order
Citations
PageRank
Yu-Wen Huang120.40
Tsern-Huei Lee224430.63
Jing-Rong Hsieh3203.41