基于随机网络演算的无线网络TCP性能上界分析  

Analysis on the upper bound of the TCP performance of wireless networks based on stochastic network calculus

作　　者：漆华妹[1] 陈志刚[1] 

机构地区：[1]中南大学信息科学与工程学院,长沙410083

出　　处：《高技术通讯》2015年第2期111-117,共7页Chinese High Technology Letters

基　　金：湖南省自然科学基金(11JJ6049)资助项目

摘　　要：为了准确地分析、判断无线网络传输控制协议(TCP)性能上界,以提高无线网络在数据传输上的服务质量(QoS),在综合分析无线网络特性的基础上,运用马尔科夫理论对无线网络TCP数据流的随机延迟上界、随机延迟抖动上界以及随机吞吐量理论上界进行了建模,并提出了一种基于随机网络演算的无线网络TCP性能上界的模型。该模型可以简化无线网络流量复杂性分析,而且能够给出网络数据流到达曲线、服务曲线、延迟上界、延迟抖动上界及吞吐量上界。研究表明,用这一模型,可以准确地预测无线网络TCP性能边界情况,这对进行无线网络TCP性能分析有重要意义。To accurately analyse and determine the upper bound of the transmission control protocol （TCP） performance of wireless networks to improve their quality of service （QoS） in data transmission, the upper bound modelling for TCP data flows＇ stochastic delay, stochastic delay jitter and throughput in wireless networks was conducted by using the Markov theories based on the general analysis of wireless networks＇ specific properties, and a model for the upper bound of wireless networks＇ TCP performance based on stochastic network calculus was proposed. The model can simplify the analysis of the complexity of traffic flowing scenarios and is capable of deriving the the data flow＇ s arrival curve, service curve, upper delay bound, upper delay jitter bound and upper throughput bound for wireless networks. The study proves that the model can accurately estimate the probability distribution of the TCP bound. This is of great importance to analysis of wireless networks＇ TCP performance.

关 键 词：无线网络 传输控制协议(TCP) 随机网络演算 性能分析 

分 类 号：TN915.04[电子电信—通信与信息系统]