摘要
目前VoIP技术逐步转向无线组网的方向发展,但是VoIP技术在无线局域网(Wireless Local Area Networks,WLAN)中的应用需要满足特定的要求,并且在基于802.11协议的MAC层PCF与DCF的接入方式上存在缺陷.通过对802.11e协议的MAC层EDCF接入方式以及802.11协议的PCF及DCF接入方式进行对比研究,并使用计算机仿真证明VoIP节点使用802.11e的EDCF能更好的满足语音数据高服务质量的需求,通过结果解决了组建VoIP无线局域网时的VoIP接入站点数量与使用何种接入方式的选择问题.
At present,VoIP technology has gradually shifted to the direction of wireless network development,but the application of VoIP technology in WALN needs the special demand,and there are some defects in the MAC layer of PCF and DCF access mode based on 802.11 protocol. This paper researches and compares EDCF access mode of MAC layer based on 802.11e protocol with PCF and DCF access mode of MAC layer based on 802.11 protocol,and through computer simulation it also proves the VoIP points can better meet the voice data＇s high Quality of Service（QOS）which uses the EDCF access mode based on 802.11e,The results show how to choose the access mode and determine the number of VoIP access stations and nodes in building a VoIP wireless local area networks.
出处
《四川师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2009年第5期703-706,共4页
Journal of Sichuan Normal University（Natural Science）
基金
四川省教育厅自然科学重点基金(07ZA011)资助项目
