DocumentCode :
1139067
Title :
Performance analysis of ad hoc wireless LANs for real-time traffic
Author :
Eshghi, Farshad ; Elhakeem, Ahmed K.
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Canada
Volume :
21
Issue :
2
fYear :
2003
fDate :
2/1/2003 12:00:00 AM
Firstpage :
204
Lastpage :
215
Abstract :
Compelling features of wireless local area networks (WLANs), put a variety of wireless service demands in place. In order to adjust system parameters to fulfill specific needs of different applications, a mathematical description of the system turns to be helpful. The inherent complexity of the wireless access, makes this description very challenging. We propose a new performance model for the IEEE 802.11 WLAN in ad hoc mode. The ad hoc mode has been chosen since we eventually aim at interconnected WLAN clusters where no base station exists. The model is based on the presentation of the system with a pair of one-dimensional state diagrams which can easily accommodate variations of many input parameters. The corresponding state variables are contention window size and buffer occupancy of each user in the system. The input parameters considered are: packet fragmentation factor, buffer size, and maximum allowable number of retransmissions. However, the approach taken is capable of ingesting many other probable parameters of interest. System performance criteria under study are: throughput, delay, and probability of fail to deliver. The last two are crucial for real-time applications.
Keywords :
IEEE standards; ad hoc networks; buffer storage; delays; packet radio networks; performance evaluation; probability; telecommunication standards; telecommunication traffic; wireless LAN; 1D state diagrams; BER; IEEE 802.11 WLAN; ad hoc wireless LAN; base station; buffer occupancy; buffer size; contention window size; delay; delivery failure probability; input parameters; interconnected WLAN clusters; maximum allowable retransmissions; one-dimensional state diagrams; packet fragmentation factor; performance analysis; performance model; real-time applications; real-time traffic; state variables; system parameters; throughput; wireless access; Base stations; Computer networks; Delay; Local area networks; Performance analysis; System performance; Telecommunication traffic; Throughput; Traffic control; Wireless LAN;
fLanguage :
English
Journal_Title :
Selected Areas in Communications, IEEE Journal on
Publisher :
ieee
ISSN :
0733-8716
Type :
jour
DOI :
10.1109/JSAC.2002.807342
Filename :
1177185
Link To Document :
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