IEEE80211e EDCA中TXOP机制的分析与改进  

Analysis and improvement of the IEEE802.11e EDCA transmission opportunity(TXOP) mechanism

作　　者：谢信通[1] 宋博[1] 唐红[1] 李新生[1] 

机构地区：[1]空军工程大学工程学院,陕西西安710038

出　　处：《电子技术应用》2011年第12期118-121,共4页Application of Electronic Technique

摘　　要：在对EDCA(Enhanced Distributed Channel Access)的业务分级策略和工作方式进行研究与分析的基础上,提出动态调整TXOP参数设置的控制算法DA-TXOP(dynamic adjust TXOP)。仿真结果表明,与EDCA中TXOP机制相比,改进机制在系统的吞吐量和信道利用率等性能上都有明显提高。Based on research and analysis of EDCA traffic classification strategy and working mode. This paper proposes a control mechanism DA-TXOP（dynamic adjust TXOP）,while adjusting transmission opportunity dynamicly.The simulation resuits show that,compared with EDCA transmission opportunity mechanism,the network＇s throughput and channel utility have been improved a lot by the new mechanism.

关 键 词：IEEE802.11E EDCA DA—TXOP 服务质量 吞吐量 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]