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基于内模补偿的网络拥塞控制新算法:IC-AQM
引用本文:陆锦军,王执铨.基于内模补偿的网络拥塞控制新算法:IC-AQM[J].南京理工大学学报(自然科学版),2006,30(2):162-166.
作者姓名:陆锦军  王执铨
作者单位:南京理工大学,自动化学院,江苏,南京,210094;南通职业大学,现代教育技术中心,江苏,南通,226007;南京理工大学,自动化学院,江苏,南京,210094
基金项目:中国科学院资助项目;江苏省自然科学基金;南京理工大学校科研和校改项目
摘    要:已有的AQM算法都没有充分考虑到长时滞对算法性能的影响,该文利用频率域模型降价拟合方式建立了TCP流量控制中主动队列管理AQM系统的等效模型,应用控制理论中的内模补偿原理设计鲁棒的时滞补偿AQM算法(IC—AQM),克服了长时滞给对队列稳定造成的不利影响,仿真结果表明,这种新算法在长时滞小期望队列综合性能明显优于已有的RED、REM、PI等算法,链路利用率大大提高。

关 键 词:内模补偿  网络拥塞  长时滞控制
文章编号:1005-9830(2006)02-0162-05
收稿时间:2005-11-10
修稿时间:2006-01-16

IC-AQM: New Congestion Network Control Scheme Based on Internal Model Compensation
LU Jin-jun,WANG Zhi-quan.IC-AQM: New Congestion Network Control Scheme Based on Internal Model Compensation[J].Journal of Nanjing University of Science and Technology(Nature Science),2006,30(2):162-166.
Authors:LU Jin-jun  WANG Zhi-quan
Institution:1. School of Automation, NUST, Nanjing 210094, China; 2. Center of Education and Technology, Nantong Vocational College, Nantong 226007, China
Abstract:The present active queue management(AQM) schemes neglect the impact on the performance caused by large delay.Based on the model reduction theory in frequency-domain,TCP AQM system model are proposed,and a robust delay compensation AQM scheme(IC-AQM) applying the principle of internal mode compensation in control theory is designed.The new scheme restricts the negative impact on the queue stability caused by the large delay.The simulation results show that this new scheme is superior to that of the present RED,REM and PI schemes when the network is in large delay and small queue length,and the link utilization is increased.
Keywords:internal model compensation  network congestion  large delay control
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