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31. 发明授权

US08121599B2 System and method for inferring wireless trajectories in a cellular telephone network 有权
标题翻译：用于推断蜂窝电话网络中的无线轨迹的系统和方法
公开(公告)号：US08121599B2
公开(公告)日：2012-02-21
申请号：US12343877
申请日：2008-12-24
申请人： Alexandre Gerber , Nicholas Duffield , Robert Manzo , William Ramirez
发明人： Alexandre Gerber , Nicholas Duffield , Robert Manzo , William Ramirez
IPC分类号： H04W36/00
CPC分类号： H04W36/0083 , H04M15/00 , H04M15/8038 , H04M2215/204 , H04M2215/7442 , H04W4/24 , H04W24/08
摘要： A device includes a processor configured to determine a number of users in each of a plurality of wireless telephone cells of a trajectory in a wireless telephone network. The processor is also configured to determine handoff data between each adjacent pair of the wireless telephone cells, and to determine a first number of users traveling along the trajectory in the wireless telephone network while on a telephone call. The processor also calculates a total number of users associated with the trajectory in the wireless telephone network based on the handoff data between each adjacent pair of the wireless telephone cells, and based on the first number of users traveling along the trajectory while on the telephone call.
摘要翻译：一种设备包括处理器，其被配置为确定无线电话网络中的轨迹的多个无线电话单元中的每一个中的用户数量。处理器还被配置为确定每个相邻无线电话单元对之间的切换数据，并且确定在电话呼叫期间沿着无线电话网络中的轨迹行进的第一数量的用户。处理器还基于每个相邻无线电话单元对之间的切换数据，并且基于在电话呼叫期间沿着轨迹行进的第一数量的用户，计算与无线电话网络中的轨迹相关联的用户总数。

32. 发明授权

US08073945B2 Method and apparatus for providing a measurement of performance for a network 有权
标题翻译：提供网络性能测量的方法和装置
公开(公告)号：US08073945B2
公开(公告)日：2011-12-06
申请号：US12109743
申请日：2008-04-25
申请人： Joel Sommers , Nicholas Duffield , Paul Barford , Amos Ron
发明人： Joel Sommers , Nicholas Duffield , Paul Barford , Amos Ron
IPC分类号： G06F13/00
CPC分类号： H04L43/12 , H04L43/0829 , H04L43/0852
摘要： A method and an apparatus for providing a measurement of performance for a network are disclosed. For example, the method sends a plurality of multi-objective probes on a path, and receives one or more of said plurality of multi-objective probes for the path. The method then determines a plurality of performance measurements.
摘要翻译：公开了一种提供网络性能测量的方法和装置。例如，该方法在路径上发送多个多目标探测器，并且接收用于路径的所述多个多目标探测器中的一个或多个。该方法然后确定多个性能测量。

33. 发明授权

US08005010B2 Method and apparatus for providing performance measurement for a network tunnel 有权
标题翻译：为网络隧道提供性能测量的方法和装置
公开(公告)号：US08005010B2
公开(公告)日：2011-08-23
申请号：US12022733
申请日：2008-01-30
申请人： Lee Breslau , Nicholas Duffield , Yu Gu , Subhabrata Sen
发明人： Lee Breslau , Nicholas Duffield , Yu Gu , Subhabrata Sen
IPC分类号： H04L12/26
CPC分类号： H04L12/4633 , H04L43/0864
摘要： A method and apparatus for providing performance measurements on network tunnels in packet networks are disclosed. For example, the method establishes two tunnels between a first measurement host and a first router, and establishes a tunnel between the first router and a second measurement host. The method also establishes a multicast group having a plurality of members, and sends one or more packets addressed to the multicast group from the first measurement host. The method measures the frequencies of directly and/or indirectly received responses from the plurality of members of the multicast group, and provides a plurality of estimated values for a plurality of packet transmission rates from measurement of the frequencies for one or more of said tunnels.
摘要翻译：公开了一种用于在分组网络中的网络隧道上提供性能测量的方法和装置。例如，该方法在第一测量主机和第一路由器之间建立两个隧道，并在第一路由器和第二测量主机之间建立隧道。该方法还建立具有多个成员的多播组，并且从第一测量主机发送寻址到多播组的一个或多个分组。该方法测量来自多播组的多个成员的直接和/或间接接收的响应的频率，并从测量一个或多个所述隧道的频率提供多个分组传输速率的多个估计值。

34. 发明授权

US07746808B2 Algorithms and estimators for summarization of unaggregated data streams 失效
标题翻译：用于汇总未分类数据流的算法和估计
公开(公告)号：US07746808B2
公开(公告)日：2010-06-29
申请号：US12136725
申请日：2008-06-10
申请人： Nicholas Duffield , Edith Cohen , Haim Kaplan , Carsten Lund , Mikkel Thorup
发明人： Nicholas Duffield , Edith Cohen , Haim Kaplan , Carsten Lund , Mikkel Thorup
IPC分类号： H04L12/26
CPC分类号： H04L43/024
摘要： The invention relates to streaming algorithms useful for obtaining summaries over unaggregated packet streams and for providing unbiased estimators for characteristics, such as, the amount of traffic that belongs to a specified subpopulation of flows. Packets are sampled from a packet stream and aggregated into flows and counted by implementation of Adaptive Sample-and-Hold (ASH) or Adaptive NetFlow (ANF), adjusting the sampling rate based on a quantity of flows to obtain a sketch having a predetermined size, the sampling rate being adjusted in steps; and transferring the count of aggregated packets from SRAM to DRAM and initializing the count in SRAM following adjustment of the sampling rate.
摘要翻译：本发明涉及用于在未分组的分组流上获得摘要的用于提供用于特征的无偏估计器的流式传输算法，例如属于指定的流量子群的业务量。分组从分组流中采样并聚合成流，并通过实施自适应采样保持（ASH）或自适应净流（ANF）进行计数，根据流量调整采样率，以获得具有预定尺寸的草图采样率逐步调整; 并将汇总数据包从SRAM传输到DRAM，并在采样率调整后初始化SRAM中的计数。

35. 发明申请

US20100157809A1 SYSTEM AND METHOD FOR SPATIALLY CONSISTENT SAMPLING OF FLOW RECORDS AT CONSTRAINED, CONTENT-DEPENDENT RATES 有权
标题翻译：流量记录的空间一致采样的系统和方法在受约束的内容依赖率
公开(公告)号：US20100157809A1
公开(公告)日：2010-06-24
申请号：US12343007
申请日：2008-12-23
申请人： Nicholas Duffield , Lee M. Breslau , Cheng Ee , Alexandre Gerber , Carsten Lund , Subhabrata Sen
发明人： Nicholas Duffield , Lee M. Breslau , Cheng Ee , Alexandre Gerber , Carsten Lund , Subhabrata Sen
IPC分类号： G06F11/30
CPC分类号： H04L43/026 , H04L43/024 , Y02D50/30
摘要： Disclosed herein are systems, computer-implemented methods, and computer-readable media for sampling network traffic. The method includes receiving a desired quantity of flow record to sample, receiving a plurality of network flow record each summarizing a network flow of packets, calculating a hash for each flow record of based on one or more invariant part of a respective flow, generating a quasi-random number from the calculated hash for each respective flow record, generating a priority from the calculated hash for each respective flow record, and sampling exactly the desired quantity of flow records, selecting flow records having a highest priority first. In one aspect, the method further partitions the plurality of flow records into groups based on flow origin and destination, generates an individual priority for each partitioned group, and separately samples exactly the desired quantity of flow records from each partitioned group, selecting flows having a highest individual priority first.
摘要翻译：本文公开了系统，计算机实现的方法和用于对网络业务进行采样的计算机可读介质。该方法包括接收所需数量的流记录到采样中，接收多个网络流记录，每个汇总分组的网络流，基于相应流的一个或多个不变部分计算每个流记录的散列，从每个相应流记录的计算散列中产生准随机数，从每个相应流记录的计算散列生成优先级，并精确地采样所需数量的流记录，首先选择具有最高优先级的流记录。在一个方面，该方法还基于流源和目的地进一步将多个流记录划分为组，为每个分区组生成一个单独的优先级，并且从每个分区组中分别精确地采集所需数量的流记录，选择具有最高个人优先。

36. 发明申请

US20100150005A1 SYSTEM AND METHOD FOR DETERMINATION OF ROUTING INFORMATION IN A NETWORK 有权
标题翻译：用于确定网络中路由信息的系统和方法
公开(公告)号：US20100150005A1
公开(公告)日：2010-06-17
申请号：US12335868
申请日：2008-12-16
申请人： Alexandre Gerber , Lee Breslau , Subhabrata Sen , Nicholas Duffield , Carsten Lund , Cheng Ee , Amogh Dhamdhere
发明人： Alexandre Gerber , Lee Breslau , Subhabrata Sen , Nicholas Duffield , Carsten Lund , Cheng Ee , Amogh Dhamdhere
IPC分类号： H04L12/26 , H04L12/56
CPC分类号： H04L12/56 , H04L41/12 , H04L45/70
摘要： A system and method to use network flow records to generate information about changes in network routing and to understand the impact of these changes on network traffic. The inferences made can be determinative, if sufficient information is available. If sufficient information is not available to make determinative inferences, inferences may be made that narrow the range of possible changes that may have occurred to network traffic and the underlying network.
摘要翻译：一种使用网络流记录生成有关网络路由更改的信息并了解这些更改对网络流量的影响的系统和方法。如果有足够的信息可用，所做的推论可以是决定性的。如果没有足够的信息可用于作出决定性推论，可以推测可能缩小网络流量和底层网络可能发生的可能变化的范围。

37. 发明授权

US07630949B1 System and method for inferring traffic legitimacy through selective impairment 失效
标题翻译：通过选择性障碍推断交通合法性的系统和方法
公开(公告)号：US07630949B1
公开(公告)日：2009-12-08
申请号：US11229156
申请日：2005-09-16
申请人： Nicholas Duffield , Balachaner Krishnamurthy
发明人： Nicholas Duffield , Balachaner Krishnamurthy
IPC分类号： G06N5/02 , G06F17/00
CPC分类号： H04L47/2475 , G06Q10/063 , H04L43/10 , H04L43/50 , H04L67/025
摘要： Described is a system and method for determining a classification of an application that includes initiating a stress test on the application, the stress test including a predetermined number of stress events, wherein the stress events are based on a network impairment. A response by the application to each stress event is identified and the application is classified as a function of the response into one of a first classification and a second classification, the first classification indicative of a normal application and the second classification indicative of an undesired application. If, the application is in the second classification, a network response procedure is executed.
摘要翻译：描述了一种用于确定应用程序分类的系统和方法，包括启动对应用程序的压力测试，压力测试包括预定数量的压力事件，其中应力事件基于网络损伤。识别应用程序对每个压力事件的响应，将应用程序分类为响应于第一分类和第二分类之一的函数，第一分类指示正常应用，第二分类指示不期望的应用。如果应用程序处于第二分类中，则执行网络响应过程。

38. 发明申请

US20090271508A1 METHOD AND APPARATUS FOR PROVIDING A MEASUREMENT OF PERFORMANCE FOR A NETWORK 有权
标题翻译：提供网络性能测量的方法和装置
公开(公告)号：US20090271508A1
公开(公告)日：2009-10-29
申请号：US12109743
申请日：2008-04-25
申请人： Joel Sommers , Nicholas Duffield , Paul Barford , Amos Ron
发明人： Joel Sommers , Nicholas Duffield , Paul Barford , Amos Ron
IPC分类号： G06F15/173
CPC分类号： H04L43/12 , H04L43/0829 , H04L43/0852
摘要： A method and an apparatus for providing a measurement of performance for a network are disclosed. For example, the method sends a plurality of multi-objective probes on a path, and receives one or more of said plurality of multi-objective probes for the path. The method then determines a plurality of performance measurements.
摘要翻译：公开了一种提供网络性能测量的方法和装置。例如，该方法在路径上发送多个多目标探测器，并且接收用于路径的所述多个多目标探测器中的一个或多个。该方法然后确定多个性能测量。

39. 发明授权

US07424489B1 Methods and apparatus for space efficient adaptive detection of multidimensional hierarchical heavy hitters 失效
标题翻译：多维分层重击球员空间有效自适应检测方法与装置
公开(公告)号：US07424489B1
公开(公告)日：2008-09-09
申请号：US11042714
申请日：2005-01-24
申请人： Nicholas Duffield , Carsten Lund , Subhabrata Sen , Yin Zhang
发明人： Nicholas Duffield , Carsten Lund , Subhabrata Sen , Yin Zhang
IPC分类号： G06F17/00 , G06F7/00
CPC分类号： H04L63/1408 , H04L43/022 , H04L43/024 , Y10S707/99945 , Y10S707/99948
摘要： The present invention develops an efficient streaming method for detecting multidimensional hierarchical heavy hitters from massive data streams and enables near real time detection of anomaly behavior in networks.
摘要翻译：本发明开发了一种用于从海量数据流中检测多维分层重击打者的有效流式传输方法，并能实现对网络中异常行为的近实时检测。

40. 发明申请

US20080043636A1 APPARATUS FOR SIZE-DEPENDENT SAMPLING FOR MANAGING A DATA NETWORK 审中-公开
标题翻译：用于管理数据网络的大小依赖性采样的设备
公开(公告)号：US20080043636A1
公开(公告)日：2008-02-21
申请号：US11924329
申请日：2007-10-25
申请人： Nicholas Duffield , Carsten Lund , Mikkel Thorup
发明人： Nicholas Duffield , Carsten Lund , Mikkel Thorup
IPC分类号： H04L12/24 , H04L9/00
CPC分类号： H04L43/00 , H04L12/14 , H04L41/0896 , H04L41/5009 , H04L43/024 , H04L43/026 , H04L43/028 , H04L43/16
摘要： The present invention provides apparatus for sampling data flows in a data network in order to estimate a total data volume in the network. Sampling the data flows in the data network reduces the network resources that must be expended by the network to support the associated activity. The present invention enables the service provider of the data network to control sampled volumes in relation to the desired accuracy. The control can be either static or can be dynamic for cases in which the data volumes are changing as a function of time.
摘要翻译：本发明提供了用于对数据网络中的数据流进行采样以便估计网络中的总数据量的装置。对数据网络中的数据流进行抽样可以减少网络必须花费的网络资源来支持相关的活动。本发明使得数据网络的服务提供商能够相对于期望的精度来控制采样量。控制可以是静态的，也可以是数据卷随着时间的变化而变化的情况。

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