WLAN中隐藏站点和暴露站点问题研究  

Study of Hidden Sites and Exposed Sites in WLAN

作　　者：李馥娟[1] 

机构地区：[1]江苏警官学院公安科技系,讲师江苏南京210012

出　　处：《电脑学习》2009年第5期1-4,共4页Computer Study

摘　　要：MAC层的工作机制是决定局域网整体性能的关键因素。针对WLANMAC层存在的隐藏站点和暴露站点两个主要问题,提出了分布式协调功能(DCF)和点协调功能(PCF)两种有效的解决方法,并结合CSMA/CA介质访问控制协议分别分析了每一种解决方法的实现原理,最后通过一个应用实例说明了其应用特点。The working mechanism of MAC layer is a key element to determine the overall performance of local area network. For the two main issues of the hidden sites and exposed sites in WLAN MAC, the paper first puts forward the two effective solution of distributed coordination and point coordination function, then combined with CSMA/CA medium access control protocol, analyzes the principle of DCF and PCF, finally describes the characteristics of their application with an application instance.

关 键 词：WLAN CSMA/CA DCF PCF 访问节点 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]