专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US11138163B2 Automatic root cause diagnosis in networks based on hypothesis testing 有权
公开(公告)号：US11138163B2
公开(公告)日：2021-10-05
申请号：US16669033
申请日：2019-10-30
申请人： EXFO Inc.
发明人： Maha Mdini , Justin Whatley , Sylvain Nadeau
IPC分类号： G06F16/00 , G06F16/21 , G06F16/22 , H04L12/24
摘要： An embodiment may involve obtaining a set of data records including features characterizing operational aspects of a communication network. Each data record may include a feature vector and performance metrics of the communication network. Each feature vector may include a multiple elements corresponding to feature-value pairs. A first statistical analysis may be applied to the set of data records and their performance metrics to identify major contributors to degraded network performance. A second statistical analysis may be applied to identify elements that negatively influence the major contributors, and to discriminate between additive effects and incompatibilities as the source of negative influence. For each major contributor, a hierarchical dependency tree may be constructed with the major contributor as the root node and influencer elements as other nodes. Redundant dependencies may be removed, mutually dependent influencer elements grouped, and only the longest edges retained, in order to create dependency graph.

2. 发明申请

US20220247620A1 Identification of Clusters of Elements Causing Network Performance Degradation or Outage 有权
公开(公告)号：US20220247620A1
公开(公告)日：2022-08-04
申请号：US17649219
申请日：2022-01-28
申请人： EXFO Inc.
发明人： Hai Hong Phan Vu , Justin Whatley , Brigitte Jaumard , Tristan Glatard , Sylvain Nadeau
IPC分类号： H04L41/08
摘要： An embodiment involves obtaining a tabular data set with columns that characterize items relating to behavior of components of a communication network; constructing a frequent-pattern tree, each node being associated with: (i) an item-name for representing an item, (ii) a count of transactions from a root node of the tree to the respective node, and (iii) node-links that refer to other nodes in the tree that represent items having the same item-name; traversing the tree to identify a set of nodes with counts greater than a predefined support threshold; generating, from the nodes, association-rules that are based on antecedent items associated with a target item; reducing the association-rules by (i) removing the association-rules in which the antecedent items thereof are a superset or subset of the antecedent items of a further association-rule, or (ii) combining the association-rules that have antecedent items that are at least partially disjoint and conditionally dependent.

3. 发明授权

US09450854B2 Pass-through test device 有权
标题翻译：通过测试设备
公开(公告)号：US09450854B2
公开(公告)日：2016-09-20
申请号：US14212144
申请日：2014-03-14
申请人： EXFO INC.
发明人： Sylvain Nadeau , Sébastien Prieur , Dominic Lapierre
IPC分类号： H04L12/26
CPC分类号： H04L43/50 , H04L43/12
摘要： Method and test device for performing testing in a network conveying a plurality of traffic flows. At the test device, receiving traffic flows through a first interface of the test device on a first segment and forwarding the received plurality of traffic flows towards a second segment of the network through a second interface. At the test device, receiving a test request directed to an address of a test module and, in response to the test request, causing a sequence of proprietary traffic to be injected on the second segment. A reprogrammable test device comprising a networked test module at least in part on a reprogrammable partition of a programmable logic device and a reprogramming module, on a static partition of the programmable logic device, for reprogramming at least a portion of the reprogrammable partition implementing the test module in accordance with reprogramming data received at the test device.
摘要翻译：用于在传送多个业务流的网络中执行测试的方法和测试设备。在测试设备处，接收业务流经第一段的测试设备的第一接口，并通过第二接口将接收的多个业务流转发到网络的第二段。在测试设备处，接收针对测试模块的地址的测试请求，并且响应于测试请求，导致专用流量序列被注入到第二段上。一种可再编程测试装置，其包括至少部分地在可编程逻辑器件的静态分区上的可编程逻辑器件和重新编程模块的可重新编程分区的网络测试模块，用于重新编程实现测试的可重编程分区的至少一部分模块根据在测试设备接收到的重新编程数据。

4. 发明授权

US11025524B2 Telecommunications network and services QOE assessment 有权
公开(公告)号：US11025524B2
公开(公告)日：2021-06-01
申请号：US16543803
申请日：2019-08-19
申请人： EXFO Inc.
发明人： Sylvain Nadeau
IPC分类号： G06F15/173 , H04L12/26 , H04L29/06
摘要： A telecommunications network and service QoE assessment method and system comprising calculating a service score; calculating a network score; calculating a global score by combining the service score and the network score, the global score being for a quality of experience of a user on the network.

5. 发明授权

US09858137B2 Network test system 有权
公开(公告)号：US09858137B2
公开(公告)日：2018-01-02
申请号：US14558773
申请日：2014-12-03
申请人： EXFO INC.
发明人： Dominic Lapierre , Bruno Giguere , Sylvain Nadeau , Gilles Buteau
IPC分类号： G06F11/00 , G06F11/07 , G06F11/22
CPC分类号： G06F11/079 , G06F11/2294 , H04L43/50
摘要： A test system and a related method, the system comprising a test processing agent and local test device(s). The test processing agent processes test measurements related to a network-under-test into test results. The test processing agent is decoupled from the network-under-test, e.g., by being reachable through a network communication link distinct from the network-under-test. The local test device comprises a firmware module and a network interface (NI) module. The firmware module depends on external instructions for initiating a test sequence on the network-under-test. The NI module comprises at least one physical port connectable to the network-under-test. The physical port is used for initiating the test sequence. The test processing agent receives the test measurements following the initiation of the test sequence by the local test device and allows access to the test results.

6. 发明授权

US11522939B2 Over-the-top media service testing and QoE issues isolation 有权
公开(公告)号：US11522939B2
公开(公告)日：2022-12-06
申请号：US17351368
申请日：2021-06-18
申请人： EXFO Inc.
发明人： Sylvain Nadeau , Kevin Corre
IPC分类号： H04L65/80 , H04L67/02 , H04L65/61
摘要： A method for Over-The-Top (OTT) media service monitoring and testing including deploying multiple test agents throughout the network and orchestrating them together to create a single OTT media service delivery path with coherent measurement points. The method includes selecting and configuring all test agents forming an OTT media service delivery path in a network, wherein the test agents are deployed on devices in the network with pairs of agents in a client-server relationship; for each selected test agent, simulating a Hyper Text Transport Protocol (HTTP) Adaptive Streaming (HAS) media playback using a pair test agent as a HAS server; for each selected test agent, monitoring the HAS media playback via a Quality of Experience (QoE) model to collect metrics, influence factors, and QoE scores; and reporting collected metrics, influence factors and QoE scores, wherein the QoE scores are compared to isolate any performance degradation.

7. 发明申请

US20210011890A1 Automatic Root Cause Diagnosis in Networks Based on Hypothesis Testing 有权
公开(公告)号：US20210011890A1
公开(公告)日：2021-01-14
申请号：US16669033
申请日：2019-10-30
申请人： EXFO Inc.
发明人： Maha Mdini , Justin Whatley , Sylvain Nadeau
IPC分类号： G06F16/21 , G06F16/22 , H04L12/24
摘要： An embodiment may involve obtaining a set of data records including features characterizing operational aspects of a communication network. Each data record may include a feature vector and performance metrics of the communication network. Each feature vector may include a multiple elements corresponding to feature-value pairs. A first statistical analysis may be applied to the set of data records and their performance metrics to identify major contributors to degraded network performance. A second statistical analysis may be applied to identify elements that negatively influence the major contributors, and to discriminate between additive effects and incompatibilities as the source of negative influence. For each major contributor, a hierarchical dependency tree may be constructed with the major contributor as the root node and influencer elements as other nodes. Redundant dependencies may be removed, mutually dependent influencer elements grouped, and only the longest edges retained, in order to create dependency graph.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式