| 无线局域网的DCF机制和EDCA机制的性能比较 |
| |
| 引用本文： | 王振,卢燕飞,唐禹行.无线局域网的DCF机制和EDCA机制的性能比较[J].铁路计算机应用,2011,20(7):32-34. |
| |
| 作者姓名： | 王振 卢燕飞 唐禹行 |
| |
| 作者单位： | 北京交通大学,通信与信息系统北京市重点实验室,北京,100044 |
| |
| 基金项目： | 国家自然科学基金(60772042) |
| |
| 摘 要： | 传统的802.11无线局域网信道接入机制没有提供服务质量保证,限制了许多实时业务在无线局域网中的应用.新的802.11 e协议对不同业务进行了区别,提供QoS保证.本文介绍和对比了802.11分布式协调功能和802.11e增强型分布信道接入2种信道接入机制,通过使用网络仿真软件OPNET,对2种信道接入机制下不同业务的...
|
| 关 键 词： | 无线局域网 服务质量 分布式协调功能 增强型分布信道接入 |
Comparison of performance on DCF mechanism and EDCA mechanism in Wireless LANs |
| |
| WANG Zhen,LU Yan-fei,TANG Yu-xing.Comparison of performance on DCF mechanism and EDCA mechanism in Wireless LANs[J].Railway Computer Application,2011,20(7):32-34. |
| |
| Authors: | WANG Zhen LU Yan-fei TANG Yu-xing |
| |
| Institution: | WANG Zhen,LU Yan-fei,TANG Yu-xing(Beijing Municipality Key Laboratory of Communication and Information System,Beijing Jiaotong University,Beijing 100044,China) |
| |
| Abstract: | The legacy 802.11 WLAN channel access mechanism didn't support QoS,which limited the application of some real time traffic in WLAN.The new 802.11e protocol distinguished different traffic to supported QoS.This paper introduced and compared 802.11 DCF mechanism and 802.11e EDCA mechanism.The throughput and delay of different traffic in both those channel access mechanism were simulated by OPNET.The results showed that the 802.11e EDCA function could effectively provide QoS differentiated service. |
| |
| Keywords: | WLAN QoS DCF EDCA |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
