王俊峰
空间信息网络、智能交通网络、网络管理与优化等
个性化签名
- 姓名:王俊峰
- 目前身份:
- 担任导师情况:
- 学位:
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学术头衔:
博士生导师
- 职称:-
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学科领域:
计算机科学技术
- 研究兴趣:空间信息网络、智能交通网络、网络管理与优化等
王俊峰:男,博士、教授、博士生导师。2004年6月毕业于电子科技大学计算机应用技术专业,获工学博士学位;2004年7月~2006年8月在中国科学院软件研究所从事博士后研究工作;2006年8月到四川大学从事科研教学工作。目前主要研究方向为空间信息网络、智能交通网络、网络管理与优化等。作为项目主持人承担国家/国防863计划项目、装备预研基金项目等国家和部省级科研项目10余项。在国内外知名刊物和国际学术会议上发表学术论文50余篇,其中SCI/EI收录论文40余篇次;申请国家发明专利5项,部分成果实现产业化推广,取得了良好的效益。
研究方向: 空间信息网络、智能交通网络、网络管理与优化等
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主页访问
1777
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关注数
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成果阅读
1519
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成果数
18
【期刊论文】Topological dynamics characterization for LEO satellite networks
王俊峰, Junfeng Wang a, b, *, Lei Li b, Mingtian Zhou a
Computer Networks 51 (2007) 43-53,-0001,():
-1年11月30日
The highly topological dynamics characterizes the most fundamental property of satellite networks with respect to terrestrial ones. The manifest feature directs the researches on various aspects of satellite networks, including protocol architecture investigations, routing protocol and reliable transmission control protocol design and enhancement, etc. This paper systematically quantifies the dynamical activities of regular low earth orbit (LEO) satellite network topologies. The number and length of network snapshots are formulated concisely. With this work, it compensates for the simplified topological assumptions in many LEO satellite network related researches. The thorough understanding of this basic feature not only provides for an accurate quantification of network behavior for researchers on satellite network community, but also could act as a guidance for future satellite constellation design and optimization.
Low earth orbit (, LEO), , Satellite networks, Topological dynamics, Snapshots characterization
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【期刊论文】A general model for long-tailed network traffic approximation∗
王俊峰, Junfeng Wang • Hongxia Zhou • Mingtian Zhou • Lei Li
J Supercomput (2006) 38: 155-172,-0001,():
-1年11月30日
The long-tailed distribution characterizes many Internet traffic properties which are often modeled by Lognormal distribution, Weibull or Pareto distribution theoretically. However, it is rather difficult to directly apply these models in traffic analysis and performance evaluation studies due to their complex representations and theoretical properties. This paper proposes a Hyper-Erlang Model (Mixed Erlang distribution) for such longtailed network traffic approximation. It fits network traffic with long-tailed characteristic into a mixed Erlang distribution directly to facilitate our further analysis. Compared with the wellknown hyperexponential based method, the mixed Erlang model is more accurate in fitting the tail behavior and also computationally efficient. Further investigations on the M/G/1 queueing behavior also prove the efficiency of the Mixed Erlang based approximation.
Network measurements•Hyper-erlang distribution•Network traffic•Queueing analysis • Expectation maximization (, EM), algorithm
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57浏览
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【期刊论文】A probability-guaranteed adaptive timeout algorithm for high-speed network flow detection
王俊峰, Junfeng Wang a, c, *, Lei Li a, Fuchun Sun b, Mingtian Zhou c
Computer Networks 48 (2005) 215-233,-0001,():
-1年11月30日
Collecting network traffic is becoming a more challenging task in passive network measurement due to the rapid growth of link speed. Flow-based network traffic capture and storage provides an efficient way for high-speed network measurement. The paper concentrates on the flow detection issue which is also the premise for further flow-based traffic analysis and modeling in such challenging environment. Based on the statistical investigation of the correlations between flow size and the maximum packet interarrival time within a flow, we obtain the empirical conditional distribution functions for some popular TCP protocol-based application flows, and then propose a Probability-Guaranteed Adaptive Timeout algorithm (PGAT) for flow termination decision. The assessment criteria for flow termination decision algorithm is systematically developed. Comparisons on flow generation ratio, flow intact ratio, and mean flow extra retaining time metrics indicate that the PGAT algorithm can obtain more attractive performance than other related works.
Passive network measurement, Flow termination decision, Flow compression
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35浏览
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【期刊论文】Clock synchronization for Internet measurements: a clustering algorithm
王俊峰, Junfeng Wang a, *, Mingtian Zhou a, Hongxia Zhou b
Computer Networks 45 (2004) 731-741,-0001,():
-1年11月30日
Clock synchronization is a crucial issue for scalable and accurate network performance measurements, especially when no external time sources are introduced. The paper presents a clustering based efficient and robust algorithm Optimized Top-Down Time series Segmentation (OTDTS) for clock synchronization between end-to-end systems. The computational complexity of OTDTS is of order OðKN2Þ. Based on the one-way probe delay traces, the algorithm segments the delay time series at proper points, at which clock dynamics occur. End systems could achieve relative clock synchronization by estimating and removing the clock skew of each segment. Simulations on artificial data set and practical Internet measurement illustrate the availability and efficiency of OTDTS.
Clock dynamics, Network measurements, Time series segmentation, One-way metrics
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34浏览
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88下载
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【期刊论文】Hyper-Erlang Based Model for Network Traffic Approximation*
王俊峰, Junfeng Wang, Hongxia Zhou, Fanjiang Xu, and Lei Li
,-0001,():
-1年11月30日
The long-tailed distribution characterizes many properties of Internet traffic. The property is often modeled by Lognormal distribution, Weibull or Pareto distribution theoretically. However, it hinders us in traffic analysis and evaluation studies directly from these models due to their complex representations and theoretical properties. This paper proposes a Hyper-Erlang Model (Mixed Erlang distribution) for such long-tailed network traffic approximation. It fits network traffic with long-tailed characteristic into a mixed Erlang distribution directly to facilitate our further analysis. Compared with the well-known hyperexponential based method, the mixed Erlang model is more accurate in fitting the tail behavior and also computationally efficient.
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34浏览
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192下载
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【期刊论文】Survey on the End-to-End Internet Delay Measurements
王俊峰, Junfeng Wang, , Mingtian Zhou, and Yuxia Li
,-0001,():
-1年11月30日
The end-to-end delay of Internet is a fundamental indicator for network performance evaluation and has been becoming a hot issue in network measurements in recent years. There are two kinds of metrics related to the end-to-end latency, i.e., Round Trip Delay and One-way Delay metric. In the paper, we survey the recent progresses on these two types of metrics measurement. Special concerns are on the clock synchronization issue in one-way delay measurement. The problems in deploying end-to-end delay measurement and the timestamping issue are also summarized. The potential new research directions in delay measurement and analysis are discussed.
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41浏览
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121下载
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王俊峰, +, 杨建华, 周虹霞, 谢高岗, 周明天
软件学报,2004,15(8):1227~1236,-0001,():
-1年11月30日
抽样方法广泛地应用于网络测量与其他领域对被测总体的指标进行估计研究表明,多种网络指标呈现重尾分布或自相似的特征这些特性为准确估计总体指标带来了诸多困难但同时对被测网络指标进行建模也有着重要的应用。然而,建立精确网络模型是困难的从时间序列拟合角度出发,提出了一种基于拟合的自适应抽样方法,对被测指标进行基于测量的建模工作主要体现在:(1)采用分段线性函数对被测指标进行逼近建立基于测量的模型,(2)与常用的抽样方法相比,在相同的样本数情况下,由拟合模型对指标进行的估计更准确、更稳定通过对两个测量记录的分析表明,在与常用抽样方法保持相同的拟合误差时,自适应抽样方法明显地减少了所需采集的样本数量,(3)与其他概率抽样方法相比,自适应抽样最终抽取的样本数更稳定、更可靠,并给出了最终样本数的概率分布
自适应抽样, 分段线性拟合, 网络测量
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54浏览
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王俊峰, 王俊峰+, 杨建华, 周虹霞, 谢高岗, 周明天
软件学报,2004,15(4);584~593,-0001,():
-1年11月30日
延迟是评价网络性能的重要指标,也是进行其他网络性能指标测量的基础基于全球定位系统(GPS)的端到端(end-to-end)时钟同步是测量网络单向指标的常用方法,但是其代价昂贵且缺乏灵活性在无端到端时钟同步机制下进行网络单向延迟指标测量的关键是消除时钟偏差效应的影响基于对时间序列分段技术的分析,提出了一种新的时间序列分段标准与改进的分段算法,买现序列的自动聚类,其时间复杂度为O(N2)将该算法应用于检测端到端时钟的动态性,识别测量过程中时钟跳变和时钟频率调整位置,买现对网络单向延迟的测量,弱化了同类工作中对时钟动态性的严格假设同时提出了基于滑动窗的在线买时时钟动态性检测算法买际测试买验表明,该算法是行之有效的
单向指标, 时钟动态性, 网络测量, 时间序列分段
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91浏览
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56下载
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王俊峰, 周明天
计算机科学,2004,31(9):66~71,-0001,():
-1年11月30日
近年来。随着网络技术的迅猛发展和互联网(Internet)应用的日益广泛,网络性能测量技术成为网络研究领域的热点。网络测量的研究成果对网络的发展具有重要的指导作用。本文综述了网络测量的重要意义、测量指标体系与常用性能指标;回顾国际上在网络性能测量领域所做的工作及取得的进展;对性能测量方法进行分类,总结有效网络测量方法的评价准则;阐述了高速网络环境下进行性能测量的关键技术与难点。最后时进一步的研究工作进行初步探讨。
网络测量,, 性能评价,, 主动测量,, 被劝测量,, 端到端指标
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41浏览
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王俊峰, 余春东, 刘立祥, , 周明天
通信学报,2006,27(8):45~51,-0001,():
-1年11月30日
对低轨道(LEO)、walker星座类型的卫星网络拓扑结构动态变化特征进行量化,给出了精确计算系统周期内网络时司片数量和时司片长度的公式。通过研究,一方面弥补了卫星网络研究中对拓扑结构时司片特征的简单假设,另一方面也为未来卫星网络星座的设计提供一定的指导。
LEO, 卫星网络, walker星座, 拓扑动态性, 时司片
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