Evaluation of quality of service schemes for IEEE 802.11 wireless LANs

被引：55

作者：

Lindgren, A ^{[1
]}

Almquist, A ^{[1
]}

Schelén, O ^{[1
]}

机构：

[1] Lulea Univ Technol, Dept Comp Sci & Elect Engn, Div Comp Sci & Networking, S-95187 Lulea, Sweden

来源：

LCN 2001: 26TH ANNUAL IEEE CONFERENCE ON LOCAL COMPUTER NETWORKS, PROCEEDINGS | 2001年

关键词：

D O I：

10.1109/LCN.2001.990806

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper evaluates four mechanisms for providing service differentiation in IEEE 802.11 wireless LANs, the Point Coordinator Function (PCF) of IEEE 802.11, the Enhanced Distributed Coordinator Function (EDCF) of the proposed IEEE 802.11 e extension to IEEE 802.11, Distributed Fair Scheduling (DFS), and Blackburst using the ns-2 simulator The metrics used in the evaluation are throughput, medium utilization, collision rate, average access delay, and delay distribution for a variable load of real time and background traffic. PCF performance is comparably low, while EDCF performs much better The best performance is achieved by Blackburst. DFS provides relative differentiation and consequently avoids starvation of low priority traffic.

引用

页码：348 / 351

页数：4