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1. 发明申请

US20130262656A1 SYSTEM AND METHOD FOR ROOT CAUSE ANALYSIS OF MOBILE NETWORK PERFORMANCE PROBLEMS 审中-公开
标题翻译：用于移动网络性能问题的根源分析的系统和方法
公开(公告)号：US20130262656A1
公开(公告)日：2013-10-03
申请号：US13436212
申请日：2012-03-30
申请人： Jin Cao , Li Erran Li , Tian Bu , Susan Wu Sanders
发明人： Jin Cao , Li Erran Li , Tian Bu , Susan Wu Sanders
IPC分类号： G06F15/173
CPC分类号： H04L41/142 , H04L41/5009
摘要： A method and system for identifying causes of performance metric changes in a network by selecting, from a pool of network event counters, a plurality of candidate counters relevant to a performance metric; grouping the candidate counters into clusters of similar counters; selecting, from each cluster, one or more representative counters; and fitting the selected representative counters to a model of the performance metric to determine thereby a set of representative counters most relevant to the performance metric.
摘要翻译：一种用于通过从网络事件计数器池中选择与性能度量相关的多个候选计数器来识别网络中性能度量变化的原因的方法和系统; 将候选计数器分组成类似计数器的集群; 从每个集群中选择一个或多个代表性计数器; 以及将所选择的代表计数器拟合到性能度量的模型，从而确定与性能度量最相关的一组代表性计数器。

2. 发明授权

US09781040B2 Congestion detection based on resource utilization information and user quality-of-experience indicators 有权
公开(公告)号：US09781040B2
公开(公告)日：2017-10-03
申请号：US13963204
申请日：2013-08-09
申请人： Scott Corey Miller , Susan Wu Sanders , Jin Cao
发明人： Scott Corey Miller , Susan Wu Sanders , Jin Cao
IPC分类号： H04L12/801 , H04W28/02 , H04L12/803 , H04L12/851
CPC分类号： H04L47/122 , H04L47/11 , H04L47/24 , H04W28/0284
摘要： A capability is provided for detecting congestion in a communication network. A congestion condition is detected for the network based on resource utilization information associated with the network and a set of user quality-of-experience (QoE) indicators associated with the network. An indication of congestion in the network is detected based on resource utilization information associated with the network and a determination as to whether or not to generate detect a congestion condition for the network is made based on one or more user QoE indicators associated with the network. An indication of congestion in the network is detected based on resource utilization information associated with the network and a determination as to whether or not to generate a congestion alert for the indication of congestion in the network is made based on one or more user QoE indicators associated with the network.

3. 发明申请

US20150043346A1 CONGESTION DETECTION BASED ON RESOURCE UTILIZATION INFORMATION AND USER QUALITY-OF-EXPERIENCE INDICATORS 有权
标题翻译：基于资源利用信息和用户质量指标的招标检测
公开(公告)号：US20150043346A1
公开(公告)日：2015-02-12
申请号：US13963204
申请日：2013-08-09
申请人： Scott Corey Miller , Susan Wu Sanders , Jin Cao
发明人： Scott Corey Miller , Susan Wu Sanders , Jin Cao
IPC分类号： H04L12/803 , H04L12/851 , H04L12/801
CPC分类号： H04L47/122 , H04L47/11 , H04L47/24 , H04W28/0284
摘要： A capability is provided for detecting congestion in a communication network. A congestion condition is detected for the network based on resource utilization information associated with the network and a set of user quality-of-experience (QoE) indicators associated with the network. An indication of congestion in the network is detected based on resource utilization information associated with the network and a determination as to whether or not to generate detect a congestion condition for the network is made based on one or more user QoE indicators associated with the network. An indication of congestion in the network is detected based on resource utilization information associated with the network and a determination as to whether or not to generate a congestion alert for the indication of congestion in the network is made based on one or more user QoE indicators associated with the network.
摘要翻译：提供了用于检测通信网络中的拥塞的能力。基于与网络相关联的资源利用信息以及与网络相关联的一组用户体验质量（QoE）指标，针对网络检测到拥塞状况。基于与网络相关联的资源利用信息检测网络中的拥塞的指示，并且基于与网络相关联的一个或多个用户QoE指示符进行关于是否生成检测到网络的拥塞状况的确定。基于与网络相关联的资源利用信息来检测网络中的拥塞的指示，并且基于与一个或多个用户QoE指示符相关联来确定是否生成用于网络中的拥塞指示的拥塞警报的确定与网络。

4. 发明申请

US20100292995A1 METHOD AND APPARATUS FOR INCREMENTAL QUANTILE ESTIMATION 审中-公开
标题翻译：用于增量数量估计的方法和装置
公开(公告)号：US20100292995A1
公开(公告)日：2010-11-18
申请号：US12467374
申请日：2009-05-18
申请人： Tian Bu , Jin Cao , Li Li
发明人： Tian Bu , Jin Cao , Li Li
IPC分类号： G06Q99/00
CPC分类号： G06Q30/02
摘要： A method and apparatus for incremental quantile estimation is provided. A method for performing incremental quantile estimation using an estimated cumulative distribution function includes receiving a record, identifying an entity with which the received record is associated, determining a record type of the received record based at least in part on the entity with which the received record is associated, updating the estimated cumulative distribution function based on the record type of the received record, and storing the estimated cumulative distribution function. The record type of the received record is indicative of whether the received record is an insertion record, an update record, or a deletion record. The estimated cumulative distribution function may be used to respond to quantile query requests in real-time or near-real-time.
摘要翻译：提供了一种用于增量分位数估计的方法和装置。使用估计的累积分布函数来执行增量分位数估计的方法包括：接收记录，识别与所接收的记录相关联的实体;至少部分地基于所接收记录的实体来确定所接收的记录的记录类型相关联，基于接收到的记录的记录类型来更新估计的累积分布函数，并存储估计的累积分布函数。接收到的记录的记录类型表示所接收的记录是插入记录，更新记录还是删除记录。估计的累积分布函数可以用于实时或接近实时地响应分位数查询请求。

5. 发明授权

US07779143B2 Scalable methods for detecting significant traffic patterns in a data network 有权
标题翻译：用于检测数据网络中重要流量模式的可扩展方法
公开(公告)号：US07779143B2
公开(公告)日：2010-08-17
申请号：US11770430
申请日：2007-06-28
申请人： Tian Bu , Jin Cao , Aiyou Chen , Pak-Ching Lee
发明人： Tian Bu , Jin Cao , Aiyou Chen , Pak-Ching Lee
IPC分类号： G06F15/16
CPC分类号： H04L43/028 , H04L43/0876 , H04L45/745 , H04L49/552 , H04L63/1408 , H04L63/1458
摘要： Methods and apparatuses are provided for detecting traffic patterns in a data network. A sequential hashing scheme can be utilized that has D hash arrays. Each hash array i, wherein 1≦i≦D, includes Mi independent hash tables each having K buckets, with each of the buckets having an associated traffic total. Each of the keys corresponds with a single bucket of each of the Mi independent hash tables of each hash array i. The keys of the data network are partitioned into D words. As traffic is received for a key, a traffic total of each bucket that corresponds with a key is updated. The hash arrays can then be utilized to identify high traffic buckets of the independent hash tables having a traffic total greater than a threshold value. The high traffic buckets can be used to detect significant traffic patterns of the data network.
摘要翻译：提供了用于检测数据网络中的流量模式的方法和装置。可以使用具有D个散列数组的顺序散列方案。每个散列数组i，其中1＆nlE; i＆nlE; D包括每个具有K个桶的独立的独立哈希表，其中每个桶具有相关联的业务量。每个密钥对应于每个散列数组i的每个Mi独立哈希表的单个桶。数据网络的密钥分为D个字。当一个密钥接收到流量时，更新与密钥对应的每个桶的流量总和。然后可以使用散列数组来识别具有大于阈值的流量总和的独立散列表的高流量桶。高流量桶可用于检测数据网络的重要流量模式。

6. 发明申请

US20090268623A1 EFFICIENT PROBABILISTIC COUNTING SCHEME FOR STREAM-EXPRESSION CARDINALITIES 有权
标题翻译：流动表达方式的有效概念计数方案
公开(公告)号：US20090268623A1
公开(公告)日：2009-10-29
申请号：US12110380
申请日：2008-04-28
申请人： Tian Bu , Jin Cao , Aiyou Chen
发明人： Tian Bu , Jin Cao , Aiyou Chen
IPC分类号： G06F11/00
CPC分类号： H04L41/142 , H04L43/026
摘要： In one embodiment, a method of monitoring a network. The method includes, at each node of a fixed set, constructing a corresponding vector of M components based on data packets received at the node during a time period, M being an integer greater than 1, the fixed set being formed of some nodes of the network; and, based on the constructed vectors, estimating how many of the received data packets have been received by all of the nodes of the set or estimating how many flows of the received data packets have data packets that have passed through all of the nodes of the set. The constructing includes updating a component of the vector of one of the nodes in response to the one of the nodes receiving a data packet. The updating includes selecting the component for updating by hashing a property of the data packet received by the one of the nodes.
摘要翻译：在一个实施例中，一种监视网络的方法。该方法包括：在固定集合的每个节点处，基于在一段时间内在节点处接收到的数据分组来构造M个分量的相应向量，M是大于1的整数，该固定集合由网络; 并且基于所构建的向量，估计所集合的所有节点已经接收到多少接收到的数据分组，或者估计接收到的数据分组的多少流具有已经通过所有节点的数据分组组。所述构造包括响应于接收到数据分组的所述节点之一更新所述节点之一的向量的分量。该更新包括通过对由该节点之一接收到的数据分组的属性进行哈希来选择用于更新的分量。

7. 发明申请

US20100299287A1 Monitoring time-varying network streams using state-space models 审中-公开
标题翻译：使用状态空间模型监控时变网络流
公开(公告)号：US20100299287A1
公开(公告)日：2010-11-25
申请号：US12453815
申请日：2009-05-22
申请人： Jin Cao , Aiyou Chen , Tian Bu
发明人： Jin Cao , Aiyou Chen , Tian Bu
IPC分类号： G06F15/18 , G06F17/10 , G06F11/00 , G06F17/14 , G06N5/02
CPC分类号： H04L41/147 , H04L41/06 , H04L41/142 , H04L41/145 , H04W24/08
摘要： In one embodiment, a statistical model is generated based on observed data, the observed data being associated with a network device, online parameter fitting is performed on parameters of the statistical model, and for each newly observed data value, a forecast value is generated based on the statistical model, the forecast value being a prediction of a next observed data value, a forecasting error is generated based on the forecast value and the newly observed data value, and whether the data of the network stream is abnormal is determined based on a log likelihood ratio test of the forecasting errors and a threshold value.
摘要翻译：在一个实施例中，基于观察数据生成统计模型，观察到的数据与网络设备相关联，对统计模型的参数进行在线参数拟合，并且对于每个新观察的数据值，基于在统计模型中，预测值是对下一观察数据值的预测，基于预测值和新观测数据值生成预测误差，以及基于网络流的网络流的数据是否异常来确定预测误差的对数似然比检验和阈值。

8. 发明申请

US20070091937A1 System and method for estimating network tomography 审中-公开
标题翻译：网络断层扫描的系统和方法
公开(公告)号：US20070091937A1
公开(公告)日：2007-04-26
申请号：US11256122
申请日：2005-10-21
申请人： Tian Bu , Jin Cao , Aiyou Chen
发明人： Tian Bu , Jin Cao , Aiyou Chen
IPC分类号： H04J3/06
CPC分类号： H04L41/00 , H04L43/0852
摘要： There is provided a system and method for estimating network tomography. More specifically, there is provided a computer system configured to measure the transmission delay along a path from a source endpoint of a computer network to a plurality of destination endpoints of the computer network, wherein the path includes at least two data links and wherein at least one of the data links is shared by the plurality of destination endpoints for transmissions from the source endpoint, to calculate a characteristic function of the measured transmission delay, and to calculate a performance parameter of one of the data links based on the characteristic function.
摘要翻译：提供了一种用于估计网络层析成像的系统和方法。更具体地，提供了一种被配置为测量沿着从计算机网络的源端点到计算机网络的多个目的地端点的路径的传输延迟的计算机系统，其中该路径包括至少两个数据链路，并且其中至少数据链接中的一个由多个目的地端点共享用于来自源端点的传输，以计算所测量的传输延迟的特征函数，并且基于特征函数来计算数据链路之一的性能参数。

9. 发明授权

US08589329B2 Method and apparatus for incremental tracking of multiple quantiles 有权
标题翻译：多个分位数增量跟踪的方法和装置
公开(公告)号：US08589329B2
公开(公告)日：2013-11-19
申请号：US12546255
申请日：2009-08-24
申请人： Tian Bu , Jin Cao , Aiyou Chen , Li Li
发明人： Tian Bu , Jin Cao , Aiyou Chen , Li Li
IPC分类号： G06F17/00 , G06F7/00 , G06F7/60 , G06Q10/00
CPC分类号： G06F17/18
摘要： A capability for incremental tracking of multiples quantiles is provided. A method for performing an incremental quantile update using a data value of a received data record includes determining an initial distribution function, updating the initial distribution function to form a new distribution function based on the received data value, generating an approximation of the new distribution function, and determining new quantile estimates from the approximation of the new distribution function. The initial distribution function includes a plurality of initial quantile estimates and a respective plurality of initial probabilities. The new distribution function includes a plurality of quantile points identifying the respective initial quantile estimates and a respective plurality of new probabilities associated with the initial quantile estimates. The approximation of the new distribution function is generated by connecting pairs of adjacent quantile points using linear approximations of regions between the pairs of adjacent quantile points.
摘要翻译：提供了增量跟踪多个分位数的能力。使用接收到的数据记录的数据值来执行增量分位数更新的方法包括确定初始分布函数，基于接收到的数据值更新初始分布函数以形成新的分布函数，生成新分布函数的近似值，并根据新分布函数的近似来确定新的分位数估计。初始分布函数包括多个初始分位数估计和相应的多个初始概率。新的分布函数包括多个分位点，其分别标识相应的初始分位数估计和与初始分位数估计相关联的相应多个新概率。通过使用相邻分位点对之间的区域的线性近似来连接相邻分位点对来产生新分布函数的近似。

10. 发明申请

US20110010337A1 METHOD AND APPARATUS FOR INCREMENTAL QUANTILE TRACKING OF MULTIPLE RECORD TYPES 有权
标题翻译：用于多记录类型的增量数量跟踪的方法和装置
公开(公告)号：US20110010337A1
公开(公告)日：2011-01-13
申请号：US12546344
申请日：2009-08-24
申请人： Tian Bu , Jin Cao , Aiyou Chen , Li Li
发明人： Tian Bu , Jin Cao , Aiyou Chen , Li Li
IPC分类号： G06F17/30 , G06F17/10
CPC分类号： G06F17/18
摘要： A method and apparatus are provided for incrementally tracking quantiles in the presence of multiple record types. A method for performing incremental quantile tracking includes receiving a first data record of a first record type having a first data value, determining whether a second data record of a second record type is received, determining an initial distribution function, updating the initial distribution function to form a new distribution function based on the first data value and whether a second data record is received, generating an approximation of the new distribution function, determining at least one new quantile estimate associated with at least one new probability of the new distribution function using the approximation of the new distribution function, and storing the at least one new quantile estimate and the at least one new probability associated with the at least one new quantile estimate.
摘要翻译：提供了一种用于在存在多种记录类型的情况下递增跟踪分位数的方法和装置。一种用于执行增量分位数跟踪的方法包括接收具有第一数据值的第一记录类型的第一数据记录，确定是否接收到第二记录类型的第二数据记录，确定初始分布函数，将初始分布函数更新为基于第一数据值形成新的分配函数，以及是否接收到第二数据记录，生成新分布函数的近似，使用所述新分布函数确定与新分布函数的至少一个新概率相关联的至少一个新的分位数估计值并且存储至少一个新的分位数估计和与该至少一个新的分位数估计相关联的至少一个新概率。

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