基于Pythagor的无线局域网延时分析  

Delay Analysis of Wireless LAN Based on Pythagor

作　　者：叶飞鹏[1] 云利军[1] 王春林[2] 

机构地区：[1]云南师范大学信息学院,云南昆明650500 [2]楚雄师范学院计算机科学系,云南楚雄675000

出　　处：《云南师范大学学报（自然科学版）》2013年第3期43-47,共5页Journal of Yunnan Normal University:Natural Sciences Edition

基　　金：国家自然科学基金资助项目(60963020;60963021);云南省学术带头人后备人才培养项目(2010CI038)

摘　　要：隐藏节点问题是WLAN中一个比较突出的问题,在802.11g协议中一般使用RTS/CTS与CTS To Self两种访问机制来改善隐藏节点问题,但是在特定的环境中,这两种访问机制所得到的效果并不相同。在对这两种访问机制进行深入分析的基础上,使用Pythagor仿真软件对两种访问机制实际运行过程中的时延情况进行仿真对比,结果表明,CTS-To-Self访问机制在抖动延时与媒体访问延时方面明显优于RTS/CTS访问机制。Hidden node has become a prominent problem in WLAN, and in order to improve this problem RTS/CTS and CTS To Self are two widely used access mechanisms in 802. 11g agreement. But in particular environment, the effects of these two access mechanism are not same. In this study, the delay case of these two access mechanism in their actual operation were simulated and compared using Pythagor simulation software. And results showed that both the jitter delay and media access delay of CTS-TO-Self were significant lower than RTS/CTS.

关 键 词：时延分析 无线局域网 Pythagor 访问机制 

分 类 号：TP393.01[自动化与计算机技术—计算机应用技术]