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	Distributed real-time measurement scheme for local QoS states
	Jiang Fan ; Xu Mingwei ; Cui Yong ; Xu Ke
	2010-05-06 ; 2010-05-06
关键词	Theoretical or Mathematical/ Internet quality of service real-time systems routing protocols sampling methods/ QoS state quality of service distributed real-time measurement scheme passive sampling active sampling data processing routing protocol Internet/ B6210L Computer communications B6150M Protocols B6150P Communication network design, planning and routing B0240Z Other topics in statistics C5620W Other computer networks C5640 Protocols C1140Z Other topics in statistics
中文摘要	The fluctuating network QoS states for routers supporting quality of service (QoS) routing were measured using a distributed real-time measurement scheme. The scheme directly utilizes existing links to measure one-way available bandwidth, clock offset, delay, and loss rate. Samples are collected by passive sampling and active sampling, which uses stratified random sampling. An exponential moving average and median are used for data processing. The measurement results are propagated to other QoS routers by QoS routing protocols. Analysis and test results show that the scheme provides the desired accuracy without any extra devices. The results reflect the latest network states and gain relative stability. Measurement packets occupy only 2 kb/s of bandwidth on each link, which is not significant relative to the scale of network.
语种	中文 ; 中文
出版者	Tsinghua Univ. Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/10195]
专题	清华大学
推荐引用方式 GB/T 7714	Jiang Fan,Xu Mingwei,Cui Yong,et al. Distributed real-time measurement scheme for local QoS states[J],2010, 2010.
APA	Jiang Fan,Xu Mingwei,Cui Yong,&Xu Ke.(2010).Distributed real-time measurement scheme for local QoS states..
MLA	Jiang Fan,et al."Distributed real-time measurement scheme for local QoS states".(2010).

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