Voice capacity analysis of WLAN with unbalanced traffic

被引：130

作者：

Cai, Lin X. ^{[1
]}

Shen, Xuemin

Mark, Jon W.

Cai, Lin ^{[1
]}

Xiao, Yang

机构：

[1] Univ Waterloo, Fac Engn, Dept Elect & Comp Engn, Ctr Wireless Commun, Waterloo, ON N2L 3G1, Canada

[2] Univ Victoria, Dept Elect & Comp Engn, Victoria, BC V8P 5C2, Canada

[3] Univ Memphis, Dept Comp Sci, Memphis, TN 38152 USA

来源：

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY | 2006年 / 55卷 / 03期

基金：

加拿大自然科学与工程研究理事会;

关键词：

IEEE; 802.11; DCF; unbalanced traffic; voice capacity;

D O I：

10.1109/TVT.2006.874145

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：

An analytical model to study the performance of wireless local area networks (WLANs) supporting asymmetric nonpersistent traffic using the IEEE 802.11 distributed coordination function mode for medium access control (MAC) is developed. Given the parameters of the MAC protocol and voice codecs, the voice capacity of an infrastructure-based WLAN, in terms of the maximum number of voice connections that can be supported with satisfactory user-perceived quality, is obtained. In addition, voice capacity analysis reveals how the overheads from different layers, codec rate, and voice packetization interval affect voice traffic performance in WLANs, which provides an important guideline for network planning and management. The analytical results can be used for effective call admission control to guarantee the quality of voice connections. Extensive simulations have been performed to validate the analytical results.

引用

页码：752 / 761

页数：10

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