改进的非理想信道IEEE802.11DCF性能分析模型  

Improved performance analysis model of IEEE802.11DCF for non-ideal channel

作　　者：陈高明[1] 张晓敏[1] 薛俊晗[1] 

机构地区：[1]山东大学信息学院,济南250100

出　　处：《计算机工程与应用》2011年第5期107-110,共4页Computer Engineering and Applications

摘　　要：为了提高分析的精确性,考虑发送成功的站点可能连续发送和重传次数限制的影响,给出了分析非理想信道下IEEE 802.11 DCF性能的改进二维马尔可夫链模型,用该模型对IEEE 802.11 DCF访问机制进行分析,求出饱和吞吐量和平均帧时延表达式。通过仿真进行了验证。In order to improve the accuracy of analysis,this paper,considering impacts of both finite retry limit and successive transmission,proposes an improved bidimensional Markov chains model for estimating the performance of IEEE 802.11 DCF for a non-ideal channel and then,using the improved model,analyzes the performances of IEEE802.11 DCF wireless LANs,deriving the expressions of the saturation throughput and the average frame delay.The results from the model are verified by simulation.

关 键 词：IEEE 802.11分布式协调功能(DCF) 无线局域网 饱和吞吐量 帧时延 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]