计算机工程Issue(11)：100-104,108,6.DOI:10.3969/j.issn.1000-3428.2013.11.022
实时以太网状态分析及其优化策略
Real-time Ethernet State Analysis and Its Optimization Policy
摘要
Abstract
In order to improve the performance of real-time Ethernet and the transmission efficiency of data frames, an optimal policy for real-time Ethernet transmission is proposed based on stochastic optimization theory. The transmission states of real-time Ethernet are analyzed and transition probability matrix is derived by calculating the transition probabilities among any two different Ethernet states. Subsequently the probability of each Ethernet state is ascertained by solving steady-state equations and then the probabilities that frames retransmit successfully after collision occurred in each time are calculated. The aim of this paper is focused on optimizing the sending rate of nodes by maximizing the objective function of the successful transmission probability. Experimental results show that in the presented policy the maximum amount of improvement in terms of transmission successful rate and throughput of Ethernet is as high as 50.4%and 23.4%respectively in comparison with the existing method, and there is also certain improvement on average time-delay of point-to-point.关键词
实时以太网/传输状态/泊松过程/半马尔科夫链/平稳状态方程/随机优化Key words
real-time Ethernet/transmission state/Poisson process/semi-Markov chain/steady state equation/stochastic optimization分类
信息技术与安全科学引用本文复制引用
金海波,仲崇权..实时以太网状态分析及其优化策略[J].计算机工程,2013,(11):100-104,108,6.基金项目
国家“863”计划基金资助项目(2007AA041407-04,2007AA041301-6) （2007AA041407-04,2007AA041301-6）
