摘要
随着移动设备的增多,基于802.11协议的WLAN系统已经被越来越广泛地使用。由于802.11协议是基于吞吐量相等的设计模式,在这种模式下所有的用户(包括AP)的吞吐量都相等。但是在实际的WLAN系统中,下行吞吐量往往大于上行吞吐量,因此WLAN设计模式在现实应用中会阻塞下行数据包的传输,上下行吞吐量异构已经是需要解决的一个重要问题。文中提出了一种自适应调节AP和STA的最小退避窗口的算法,解决了上下行流量异构问题。
With the number of mobile devices increasing rapidly,wireless local area networks（WLANs）based on 802.11 standard,are becoming more and more popular.All the stations（STA）including access point（AP）have the same traffic load because the 802.11 standard adopts equal throughput design model.But in real life,downlink traffic is almost always larger than uplink traffic.The design model of WLANs will limit downlink packets transmitting,so the asymmetric traffic loads between uplink and downlink is an important problem to solve.This paper gives a solution to solve this problem by adaptively adjusting minimum contention window（CWmin）of AP and STA based on the number of active stations（STAs）.
出处
《电子测量技术》
2016年第8期168-171,共4页
Electronic Measurement Technology
