公开(公告)号：US20160182275A1

公开(公告)日：2016-06-23

申请号：US14581300

申请日：2014-12-23

Applicant: Infinera Corporation

Inventor： Pydi Kasi VISWANADHAM ,  Lam D. HOANG ,  Naveen Narasimha HEGDE ,  Pankaj SAJNANI ,  Rajasekar VENKATESAN ,  Yashpal KUMAR

IPC: H04L12/24 ,  H04Q11/00 ,  H04L12/26 ,  H04B10/03 ,  H04B10/077

CPC classification number: H04Q11/0066 ,  H04B10/0771 ,  H04B10/0773 ,  H04J3/14 ,  H04L41/0672 ,  H04L41/0677 ,  H04L43/0811 ,  H04L43/16 ,  H04Q11/0062 ,  H04Q2011/0081 ,  H04Q2011/0083

Abstract: A device may receive health information associated with a network circuit included in an optical network. The device may determine, based on the health information and network circuit information associated with the network circuit, that the network circuit is experiencing a health issue. The device may identify a diagnostic technique to be applied to the network circuit based on determining that the network circuit is experiencing the health issue. The device may automatically and iteratively apply the identified diagnostic technique to the network circuit in order to identify a fault location. The device may determine a corrective action, associated with the network circuit, based on the fault location and the health issue. The device may provide information associated with the corrective action to cause the corrective action to be taken.

Abstract translation: 设备可以接收与包括在光网络中的网络电路相关联的健康信息。 该设备可以基于与网络电路相关联的健康信息和网络电路信息来确定网络电路正在经历健康问题。 该装置可以基于确定网络电路正在经历健康问题来识别要应用于网络电路的诊断技术。 该装置可以自动并迭代地将所识别的诊断技术应用于网络电路，以便识别故障位置。 该设备可以基于故障位置和健康问题来确定与网络电路相关联的校正动作。 设备可以提供与纠正措施相关联的信息，以引起纠正措施。

公开(公告)号：US20160173352A1

公开(公告)日：2016-06-16

申请号：US14965068

申请日：2015-12-10

Applicant: NET INSIGHT INTELLECTUAL PROPERTY AB

Inventor： Magnus DANIELSSON

IPC: H04L12/26 ,  H04L29/06 ,  H04L12/24

CPC classification number: H04L43/0864 ,  H04J3/0641 ,  H04J3/0644 ,  H04J3/0676 ,  H04J3/0682 ,  H04J3/14 ,  H04L41/064 ,  H04L63/1408

Abstract: A method to provide a cyber attack resistant and fault tolerant precision clocking scheme for wide area critical infrastructure networks through what is called Distributed Time Source Validation, DTSV, is provided, which is a distributed algorithm and signaling mechanism for a network to detect a compromised time source or sources in a multiple master clock system. The method includes providing a local clock signal, receiving in a node R1 an external clock signal from an external source, C or S1, estimating based on the local clock signal and the external clock signal timing parameters associated with the first node and the external source, comparing the timing parameters to detect any Mutual Clock Discrepancy (MCD) between the first node and the external source, and distributing any detected MCD in the network.

Abstract translation: 提供了一种通过所谓的分布式时间源验证（DTSV）为广域关键基础设施网络提供网络抗攻击和容错精确计时方案的方法，该方法是网络检测受损时间的分布式算法和信令机制 多主时钟系统中的源或源。 该方法包括提供本地时钟信号，在节点R1中接收来自外部源C或S1的外部时钟信号，基于本地时钟信号和与第一节点和外部源相关联的外部时钟信号定时参数进行估计 比较定时参数以检测第一节点和外部源之间的任何相互时钟差异（MCD），并在网络中分发任何检测到的MCD。

公开(公告)号：US09356853B2

公开(公告)日：2016-05-31

申请号：US14446643

申请日：2014-07-30

Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.

Inventor： Arvind R. Mallya

IPC: H04J3/07 ,  H04L12/26 ,  H04J3/14 ,  H04N21/434 ,  H04L12/54

CPC classification number: H04L43/0882 ,  H04J3/07 ,  H04J3/14 ,  H04L12/56 ,  H04L43/0894 ,  H04N21/4341

Abstract: A device is disclosed including a memory configured to store a user data frame. The user data frame includes a first portion that includes traffic data. The user data frame also includes a second portion that includes a set of stuff bits arranged in a detectible pattern wherein a count of the set of stuff bits is associated with a measure of transport utilization of a data communication channel over which the user data frame is transported.

Abstract translation: 公开了一种设备，其包括被配置为存储用户数据帧的存储器。 用户数据帧包括包括业务数据的第一部分。 用户数据帧还包括第二部分，其包括以可检测模式排列的一组填充比特，其中填充比特集合的计数与用户数据帧所在的数据通信信道的传输利用率的度量相关联 运输

公开(公告)号：US09331837B2

公开(公告)日：2016-05-03

申请号：US14356205

申请日：2012-04-18

Applicant: Jianxin Xu ,  Li He

Inventor： Jianxin Xu ,  Li He

IPC: G01R31/08 ,  H04L7/00 ,  H04J3/14 ,  H04L12/26 ,  H04L12/24 ,  H04J3/06

CPC classification number: H04L7/0016 ,  H04J3/0667 ,  H04J3/14 ,  H04L41/064 ,  H04L43/106

Abstract: A method and a device for detecting a 1588 time error between network elements are disclosed. The method includes: a 1588 time network is established for an entire network; when it is required to detect a 1588 time error between a network element and its opposite network element, the network elements transmit, probe packets, each including a local timestamp to each other; and the network element receiving a probe packet calculates, according to a preset time difference algorithm, a time difference between the local timestamp and the timestamp in the probe packet, determines, according to the time difference, whether there is a failure in a detection path, and reports an alarm when there is a failure in the detection path. The disclosure prevents erroneous time transmission due to the time error, thus ensuring the network stability.

Abstract translation: 公开了一种用于检测网络元件之间的1588时间误差的方法和装置。 该方法包括：为整个网络建立1588时间网络; 当需要检测网元与其相对网元之间的1588时间误差时，网元将每个包含本地时间戳的探测包发送给彼此; 并且接收探测分组的网络单元根据预设的时差算法，计算探测分组中的本地时间戳与时间戳之间的时间差，根据时差确定检测路径中是否存在故障 ，并在检测路径出现故障时报告。 本公开防止由于时间错误而导致错误的时间传输，从而确保网络的稳定性。

公开(公告)号：US09300526B2

公开(公告)日：2016-03-29

申请号：US13898409

申请日：2013-05-20

Applicant: Telecommunications Research Laboratories

Inventor： Wayne D. Grover ,  Adil Kodian

IPC: G01R31/08 ,  H04L12/24 ,  H04L12/701 ,  H04L12/707 ,  H04L12/703 ,  H04J3/14

CPC classification number: H04L41/0654 ,  H04J3/14 ,  H04L45/00 ,  H04L45/22 ,  H04L45/28

Abstract: A telecommunications network, comprising plural nodes connected by plural spans and arranged to form a mesh network. There is at least one pre-configured cycle of spare capacity established in the mesh network, the pre-configured cycle including plural nodes of the mesh network. The plural nodes of the pre-configured cycle are configured to protect a set of plural mutually disjoint working paths end to end.

公开(公告)号：US20160056887A1

公开(公告)日：2016-02-25

申请号：US14780855

申请日：2013-05-17

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Hidenori SHIMIZU ,  Yoshiaki KONISHI

IPC: H04B10/032 ,  H04Q11/00

CPC classification number: H04B10/032 ,  H04J3/14 ,  H04J3/1652 ,  H04Q11/0066 ,  H04Q2011/0081

Abstract: An optical transport system includes: uplink transponders opposed to construct an uplink transport path, to transport an OTU frame, redundant uplink transponders opposed to construct a redundant system uplink transport path, to transport the OTU frame, downlink transponders opposed to construct a downlink transport path, to store maintenance information in the OTU overhead of the OTU frame and transport this OTU frame when a failure occurs in the uplink transport path; optical switches to connect between client transport devices, and the uplink transport path and the redundant system uplink transport path such that switching between these uplink transport paths can be performed, to switch from the uplink transport path to the redundant system uplink transport path on the basis of the maintenance information.

Abstract translation: 光传输系统包括：与构建上行链路传输路径相反的上行链路转发器，传输OTU帧，与构成冗余系统上行链路传输路径相反的冗余上行链路转发器，传输OTU帧，与构建下行链路传输路径相反的下行链路转发器 将维护信息存储在OTU帧的OTU开销中，并且在上行链路传输路径中发生故障时传送该OTU帧; 连接在客户端传输设备之间的光交换机，以及上行链路传输路径和冗余系统上行链路传输路径，使得可以执行这些上行链路传输路径之间的切换，从而从基站的上行链路传输路径切换到冗余系统上行链路传输路径 的维护信息。

公开(公告)号：US09270396B2

公开(公告)日：2016-02-23

申请号：US13861187

申请日：2013-04-11

Applicant: Tellabs Operations, Inc.

Inventor： Anthony Leonard Sasak ,  Christopher V O'Brien

IPC: H04J3/06 ,  H04J3/14 ,  H04L12/26 ,  H04L12/24

CPC classification number: H04L47/283 ,  H04J3/0632 ,  H04J3/065 ,  H04J3/14 ,  H04L41/064 ,  H04L43/106 ,  H04L47/621 ,  H04L47/6245

Abstract: A network device such as a router or switch, in one embodiment, includes a timing analyzer which is capable of providing timing analysis over one or more network circuits. The timing analyzer, in one aspect, receives a data packet traveling across a circuit emulation service (“CES”) circuit such as T1 or E1 circuit. Upon obtaining an arrival timestamp associated with the data packet, the arrival timestamp is stored in a timestamp buffer in accordance with a first-in first-out (“FIFO”) storage sequence. After identifying the oldest arrival timestamp in the timestamp buffer, an offset is generated based on the result of comparison between the arrival timestamp and the oldest timestamp. The timing analyzer can also be configured to generate timing reports on-demand based on generated offset(s).

Abstract translation: 在一个实施例中，诸如路由器或交换机之类的网络设备包括能够在一个或多个网络电路上提供定时分析的定时分析器。 定时分析器在一个方面接收跨越诸如T1或E1电路的电路仿真服务（“CES”）电路行进的数据分组。 在获得与数据分组相关联的到达时间戳时，根据先进先出（“FIFO”）存储顺序将到达时间戳存储在时间戳缓冲器中。 在识别时间戳缓冲区中最早到达时间戳之后，基于到达时间戳和最早时间戳之间的比较结果生成偏移量。 定时分析器还可以被配置为基于生成的偏移来按需生成定时报告。

公开(公告)号：US20160043797A1

公开(公告)日：2016-02-11

申请号：US14489838

申请日：2014-09-18

Applicant: Jatin SAREEN ,  Waseem Reyaz KHAN ,  Kapil JUNEJA ,  Rajagopalan KANNAN

Inventor： Jatin SAREEN ,  Waseem Reyaz KHAN ,  Kapil JUNEJA ,  Rajagopalan KANNAN

IPC: H04B10/038 ,  H04Q11/00

CPC classification number: H04Q11/0005 ,  H04J3/14 ,  H04J2203/006

Abstract: Systems and methods for fast restoration in a network using a control plane include detecting a failure on a link associated with the node; and providing failure information through in-band data path overhead of an affected connection, wherein the in-band data path overhead is sent over a fast path, wherein the failure information is received at an originating node of the affected connection via the fast path, prior to the originating node receiving control plane signaling via a slow path relative to the fast path.

Abstract translation: 使用控制平面在网络中快速恢复的系统和方法包括检测与节点相关联的链路上的故障; 以及通过所述受影响的连接的带内数据路径开销提供故障信息，其中所述带内数据路径开销通过快速路径发送，其中所述故障信息经由所述快速路径在所述受影响的连接的始发节点处被接收， 在起始节点之前经由相对于快速路径的慢路径接收控制平面信令。

公开(公告)号：US20160037242A1

公开(公告)日：2016-02-04

申请号：US14880044

申请日：2015-10-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wei Su ,  Qiuyou Wu ,  Limin Dong

IPC: H04Q11/00

CPC classification number: H04Q11/0071 ,  H04J3/14 ,  H04J3/1652 ,  H04J14/025 ,  H04J2203/006 ,  H04J2203/0066 ,  H04J2203/0094 ,  H04L41/00 ,  H04Q2011/0086

Abstract: The present invention provides a method, which including: determining, by a first node, an adjustment requirement for a line interface rate; and according to the adjustment requirement for the line interface rate, adjusting, by the first node, a transport bandwidth of an optical channel (OCh) link, adjusting the number of optical channel transport lanes (OTLs) in an optical channel transport unit (OTUCn) link, and adjusting the number of optical channel data lanes (ODLs) in an optical channel data unit (ODUCn) link, where the OTL is in one-to-one correspondence with the ODL. In embodiments of the present invention, according to an adjustment requirement for a line interface rate, a transport bandwidth of an OCh link is adjusted, the number of OTLs in an OTUCn link is adjusted, and the number of ODLs in an ODUCn link is adjusted, so that the line interface rate can be dynamically adjusted.

Abstract translation: 本发明提供一种方法，其包括：由第一节点确定线路接口速率的调整要求; 根据线路接口速率的调整要求，通过第一节点调整光信道（OCh）链路的传输带宽，调整光信道传输单元（OTUCn）中的光信道传输通道数（OTL） ）链路，并且调整光信道数据单元（ODUCn）链路中的光信道数据通路（ODL）的数量，其中OTL与ODL一一对应。 在本发明的实施例中，根据对线路接口速率的调整要求，调整OCh链路的传输带宽，调整OTUCn链路中的OTL的数量，并调整ODUCn链路中的ODL的数目 ，使线路接口速率可以动态调整。

公开(公告)号：US20160006502A1

公开(公告)日：2016-01-07

申请号：US14760757

申请日：2013-04-25

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

Inventor： Annamaria FULIGNOLI ,  Andrea CORTI ,  Sergio LANZONE

IPC: H04B10/032

CPC classification number: H04B10/032 ,  H04B10/27 ,  H04J3/14 ,  H04J2203/0028 ,  H04J2203/006

Abstract: For protecting traffic from a source client entity (CE1) to a destination client entity (CE2) via an optical transport network and attachment circuits at ingress (A,B) and egress (C,D) nodes, there are multiple paths within the OTN, and the attachment circuits are dual homed. By sending (120) an indication of operational status of the dual homed attachment circuits within overhead associated with the traffic and sent with the traffic through the network, a selection can be made (130) of which of the provided paths and attachment circuits to use for the traffic, based on the indicated operational status, and on OTN fault detection, to protect against a fault. Thus protection can extend across the edge nodes without interworking of separate protection schemes and without a control plane. Traffic flows can be multiplexed at the ingress, with the indication in the overhead having separate indications for each of the traffic flows.

Abstract translation: 为了通过光传输网络和进入（A，B）和出口（C，D）节点处的连接电路来保护来自源客户端实体（CE1）到目的客户端实体（CE2）的业务，在OTN内有多条路径 ，并且附件电路是双归位的。 通过在与业务相关的开销内发送（120）双归属连接电路的操作状态的指示并通过网络与业务一起发送（120），可以选择（130）所提供的路径和附件电路中的哪一个使用 对于流量，根据指示的运行状态，以及OTN故障检测，防止出现故障。 因此，保护​​可以跨越边缘节点延伸，而不需要分离的保护方案并且没有控制平面。 业务流可以在入口处多路复用，开销中的指示具有针对每个业务流的单独指示。