Performance of rate-adaptive wireless-LAN

被引：1
|
作者：
Burmeister, Carsten
Killat, Ulrich
Bachmann, Jens
机构：
[1] Tech Univ Hamburg, Comm Networks Dept, D-21073 Hamburg, Germany
[2] Panasonic Res & Dev Ctr, Germany GmbH, D-63225 Langen, Germany
来源：
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS | 2007年 / 61卷 / 08期
关键词：
wireless LAN; performance evaluation; TCP; voice over IP;
D O I：
10.1016/j.aeue.2006.08.005
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The quality of different applications over rate-adaptive Wireless Local Area Networks (WLAN) is investigated. Therefore, we extend an analytical model of rate-adaptive WLAN at bit and packet level from previous work by including TCP flows and voice over IP applications at flow level. The stations are modelled as M/G/1/B queueing systems. The final model results in a set of non-linear equations, which are solved to calculate performance metrics of these applications, such as loss rate and delay. We will show that links over WLAN are highly asymmetric in terms of delay and loss rate and that the performance depends mainly on the locations of the users and the number of these. Further we show that collisions do not play a significant role in the overall packet loss rates. We verify our findings by means of simulations. (c) 2006 Elsevier GmbH. All rights reserved.
引用
收藏
页码：493 / 503
页数：11
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