Throughput and Delay Performance of Voice over Wireless LAN: Analysis and Enhancement

被引：0
|
作者：
Zhang, Lin [1 ]
Du, Yingtian [1 ]
Yu, Ke [1 ]
机构：
[1] Beijing Univ Posts & Telecommun, Beijing 100088, Peoples R China
来源：
INFORMATION-AN INTERNATIONAL INTERDISCIPLINARY JOURNAL | 2010年 / 13卷 / 04期
关键词：
Markov model; Throughput; Delay; Wireless Lan; IEEE-802.11; CAPACITY; 802.11B;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The QoS and capacity of Voice over Wireless Local Area Networks (VoWLAN) is becoming an obstacle for network planners. In this paper, we proposed and validated an improved Markov analytical model to study the performance of WLAN. A novel method to analyze the delay was further developed with the M/G/1 queuing model. Based on the mentioned model, we analyzed the 802.11e-based VoWLAN and found the paradox of low bandwidth usage and high blocking rate. Moreover, a joint optimized solution to this problem was brought forward. The solution consisted of two parts: Device Differentiation Configuration and Queue-tail Aggregation. The effects of the proposed approach were demonstrated through extensive simulations. The results were very promising: the number of sustainable two-way VoWLAN connection was improved from 5 to 19.
引用
收藏
页码：1393 / 1411
页数：19
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