公开(公告)号：US20140237328A1

公开(公告)日：2014-08-21

申请号：US14263553

申请日：2014-04-28

申请人： Invensys Systems, Inc.

发明人： Alan A. Gale ,  Andrew L. Kling ,  Mark E. Timperley ,  Lawrence T. Bass ,  John J. Lavallee ,  George W. Cranshaw ,  Alan M. Foskett

IPC分类号： G06F11/10 ,  G06F9/48

CPC分类号： G06F11/1004 ,  G06F9/4843 ,  G06F11/1008 ,  G06F11/1076 ,  G06F11/1633 ,  G06F11/165 ,  G06F11/1658 ,  G06F11/1679 ,  G06F11/1683 ,  H03M13/15 ,  H03M13/151 ,  H04L1/0057 ,  H04L1/0061 ,  H04L1/22

摘要： A dual redundant process controller is provided. The controller comprises a process control application that executes on a first and a second module. When executed by the first module, a first application instance writes a first synchronization information to the second module, reads a second synchronization information from the first module, and, when the second disagrees with the first synchronization information after passage of a time-out interval, performs a resynchronization function; and wherein, when executed by the second module, the second application instance writes the second synchronization information to the first module, reads the first synchronization information from the second module, and, when the first disagrees with the second synchronization information after passage of the time-out interval, performs the resynchronization function. The first application instance calls the synchronization function provided by the multitasking real-time operating system before invoking a set events function provided by a multitasking real-time operating system.

摘要翻译： 提供双冗余过程控制器。 控制器包括在第一和第二模块上执行的过程控制应用程序。 当由第一模块执行时，第一应用实例将第一同步信息写入第二模块，从第一模块读取第二同步信息，并且当第二应用实例在超时间隔之后不同意第一同步信息时 ，执行重新同步功能; 并且其中，当由所述第二模块执行时，所述第二应用实例将所述第二同步信息写入所述第一模块，从所述第二模块读取所述第一同步信息，并且当所述第一同步信息在所述时间过后时不同意所述第二同步信息 -out间隔，执行重新同步功能。 第一个应用实例在调用由多任务实时操作系统提供的集合事件功能之前调用多任务实时操作系统提供的同步功能。

公开(公告)号：US08811151B2

公开(公告)日：2014-08-19

申请号：US13908611

申请日：2013-06-03

申请人： AT&T Intellectual Property I, L.P.

发明人： Chaoxin Qiu ,  Robert Dailey ,  Arshad Khan ,  Jeffrey Scruggs

IPC分类号： H04L1/22 ,  H04J1/16 ,  H04J3/14 ,  H04L29/06

CPC分类号： H04L65/1046 ,  H04L1/22

摘要： According to one method for preserving stable calls during failover, during a dialog between two user endpoints, a determination is made whether a standby call processor has become operational, such as when a corresponding primary call processor is in fault. Responsive to determining that the standby call processor has become operational, a signaling protocol message is received from a requester. A determination is made whether the message includes an in-dialog signaling protocol request. Responsive to determining that the message includes the in-dialog request, a determination is made whether a call state associated with the dialog is found in memory. Responsive to determining that the call state associated with the dialog is not found in memory, a non-call terminating error response is made responding to the in-dialog request. The non-call terminating error response may cause the requester to terminate the in-dialog request but not terminate the dialog.

摘要翻译： 根据用于在故障切换期间保持稳定呼叫的一种方法，在两个用户端点之间的对话期间，确定备用呼叫处理器是否变得可操作，例如当相应的主呼叫处理器处于故障时。 响应于确定备用呼叫处理器已经可操作，从请求者接收到信令协议消息。 确定消息是否包括对话信令协议请求。 响应于确定消息包括对话请求，确定是否在存储器中找到与对话相关联的呼叫状态。 响应于确定与存储器中没有找到与对话相关联的呼叫状态，响应对话请求而产生非呼叫终止错误响应。 非呼叫终止错误响应可能导致请求者终止对话请求，但不终止该对话。

公开(公告)号：US08804496B2

公开(公告)日：2014-08-12

申请号：US13315948

申请日：2011-12-09

申请人： Jim Guichard ,  Luca Martini ,  Keyur Patel ,  Thomas David Nadeau

发明人： Jim Guichard ,  Luca Martini ,  Keyur Patel ,  Thomas David Nadeau

IPC分类号： G01R31/08

CPC分类号： H04L45/04 ,  H04L1/22 ,  H04L45/22 ,  H04L45/28 ,  H04L45/42 ,  H04L45/44 ,  H04L45/50 ,  H04L45/68

摘要： The protection of multi-segment pseudowires by utilizing backup paths is disclosed herein. Disclosed embodiments include methods that establish at least one backup path for multi-segment pseudowires, the establishing being performed prior to detection of failure in the primary path. Upon detecting a path failure, the detected failure is signaled to the head-end, a backup path is chosen, and reachability information associated with the chosen backup path is signaled across the backup path before reverse traffic is switched to the backup path. In other disclosed embodiments, apparatus are configured to establish, prior to detection of failure in the primary path, at least one backup path for the multi-segment pseudowire.

摘要翻译： 本文公开了通过利用备用路径保护多段伪线。 公开的实施例包括为多段伪线建立至少一个备用路径的方法，该建立是在检测到主路径中的故障之前执行的。 在检测到路径故障时，将检测到的故障信号发送到前端，选择备份路径，并且在将反向流量切换到备份路径之前通过备份路径发信号通知所选备份路径的可达性信息。 在其他公开的实施例中，设备被配置为在检测到主路径中的故障之前建立用于多段伪线的至少一个备用路径。

公开(公告)号：US08788914B2

公开(公告)日：2014-07-22

申请号：US13639675

申请日：2011-03-07

申请人： Hiroaki Kataoka ,  Shinya Kamada

发明人： Hiroaki Kataoka ,  Shinya Kamada

IPC分类号： H03M13/00

CPC分类号： H04L1/22 ,  H04L1/0045 ,  H04L1/203 ,  H04L29/04 ,  H04L49/557 ,  H04L69/14 ,  H04L69/40

摘要： When a first communication device receives a predetermined message from a second communication device via a third line (L3) in a state of transmitting frames to a first line (L1) while performing error-correction coding on the frames, the first communication device switches the line used for transmission from L1 to the second line (L2), then transmits a frame of a post-switching message to L1 . The second communication device receives frames from L1 and L2 and performs error correction, stores the frames, on which error correction has been performed, in first and second buffers (B1, B2), and when determining that it is necessary to perform line switching based on the status of error correction with respect to the frames received from L1, transmits a predetermined message to L3, and when receiving the frame of the post-switching message from L1, starts reading frames from B2 after reading all frames stored in B1.

摘要翻译： 当第一通信设备在对第一线路（L1）发送帧的状态下经由第三线路（L3）从第二通信设备接收到预定消息，同时对帧执行纠错编码时，第一通信设备切换 用于从L1传输到第二线路（L2）的线路，然后将切换后消息的帧发送到L1。 第二通信装置从L1和L2接收帧并执行纠错，将执行了错误校正的帧存储在第一和第二缓冲器（B1，B2）中，并且当确定需要执行基于线路切换 关于从L1接收到的帧的纠错状态，向L3发送预定消息，并且当从L1接收到切换后消息的帧时，在读取存储在B1中的所有帧之后开始从B2读取帧。

公开(公告)号：US20140195871A1

公开(公告)日：2014-07-10

申请号：US13736431

申请日：2013-01-08

申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION

发明人： Nicolas M. CLAYTON ,  Theodore T. HARRIS, JR. ,  Gail A. SPEAR

IPC分类号： H04L1/08

CPC分类号： H04L1/08 ,  H04L1/22

摘要： Systems and methods are provided to improve performance in backup data storage systems by improving response to errors. The system and method provide for transferring data from a primary storage controller to a secondary storage controller, where the secondary storage controller is linked to the primary storage controller by a plurality of links. The system and method includes transmitting a first transaction from the primary storage controller to the secondary storage controller using a first of a plurality of links. Then, in response to the first transaction crossing a first timeout boundary without completing, the system and method includes transmitting a second transaction from the primary storage controller to the secondary storage controller using a second of the plurality of links, the second of the plurality of links preferentially selected to be on a different network failure boundary from the first of the plurality of links.

摘要翻译： 提供系统和方法，通过改进对错误的响应来提高备份数据存储系统的性能。 该系统和方法提供将数据从主存储控制器传送到辅助存储控制器，其中辅助存储控制器通过多个链路链接到主存储控制器。 该系统和方法包括使用多个链路中的第一个从第一存储控制器向第二存储控制器发送第一事务。 然后，响应于第一个事务跨越第一超时边界而不完成，该系统和方法包括使用多个链路中的第二个从主存储控制器向第二存储控制器发送第二事务，多个 优先选择在与多个链路中的第一个链路不同的网络故障边界上的链路。

公开(公告)号：US08761003B2

公开(公告)日：2014-06-24

申请号：US10445963

申请日：2003-05-28

申请人： Yasuharu Yoshida

发明人： Yasuharu Yoshida

IPC分类号： H04J3/14

CPC分类号： H04L1/22

摘要： A transmission capacity of a transmitter is controlled by a signal input from a receiver through a propagation path. The receiver produces a control signal for controlling a system at the optimum transmission capacity which is obtained from monitored information such as transmission quality or reception C/N and the like, and outputs the control signal to the transmitter and a judging circuit. The judging circuit compares the transmission capacity of each line. When the transmission capacity of a first regular line is the lowest transmission capacity, a switching signal is output from the judging circuit. Then a transmission switching device and a reception switching device operate and the input signal on the first regular line is output through the spare line. The transmission capacity of the signal is that of the spare line.

摘要翻译： 发射机的传输容量由接收机通过传播路径输入的信号控制。 接收机产生用于控制系统的控制信号，该控制信号以从发送质量或接收C / N等等监视信息获得的最佳传输容量进行控制，并将控制信号输出到发射机和判断电路。 判断电路比较每行的传输容量。 当第一规则行的传输容量是最低传输容量时，从判断电路输出切换信号。 然后，传输切换装置和接收切换装置工作，并且通过备用线路输出第一常规线路上的输入信号。 信号的传输容量是备用线路的传输容量。

公开(公告)号：US08711690B2

公开(公告)日：2014-04-29

申请号：US13799110

申请日：2013-03-13

申请人： LiveQoS Inc.

发明人： Matthew Robert Williams ,  Mohan Krishna Vemulapali ,  Uri Nebogatov ,  Miika Anttoni Klemetti ,  Vijayendran Mahendran

IPC分类号： G01R31/08

CPC分类号： H04L47/12 ,  H04L1/1867 ,  H04L1/188 ,  H04L1/203 ,  H04L1/205 ,  H04L1/22 ,  H04L47/11 ,  H04L47/193 ,  H04L47/50 ,  H04L69/163

摘要： A system for congestion control of traffic in a network that uses Transmission Control Protocol (TCP) includes a plurality of TCP congestion control programs having one or more parameters, a plurality of TCP congestion control units running the TCP congestion control programs, and a TCP mapper adapted to map incoming TCP traffic flow from a plurality of incoming TCP traffic flows to the TCP congestion control units based on at least one of (a) the type of application program from which the incoming TCP traffic flow originated (b) the type of network for which the incoming TCP traffic flow is destined, (c) parameters related to network performance (d) network constraints (e) source of the incoming TCP traffic flow, and (f) destination of the incoming TCP traffic flow.

摘要翻译： 用于使用传输控制协议（TCP）的网络中的业务的拥塞控制的系统包括具有一个或多个参数的多个TCP拥塞控制程序，运行所述TCP拥塞控制程序的多个TCP拥塞控制单元和TCP映射器 适于将来自多个传入TCP业务流的传入TCP流量流映射到所述TCP拥塞控制单元，所述TCP拥塞控制单元基于以下中的至少一个：（a）来自所述传入TCP业务流的应用程序的类型（b）所述网络的类型 （c）与网络性能相关的参数（d）网络约束（e）进入的TCP流量的来源，以及（f）进入的TCP流量的目的地。

公开(公告)号：US08693314B1

公开(公告)日：2014-04-08

申请号：US13218127

申请日：2011-08-25

申请人： Josh Matthew Horton ,  Richard Paul King

发明人： Josh Matthew Horton ,  Richard Paul King

IPC分类号： H04L1/22

CPC分类号： H04L1/22

摘要： A communication system comprises a plurality of subscriber lines that are bonded to provide a bonding group, referred to as the “primary bonding group.” A data stream comprising a plurality of data packets is transmitted to a port, referred to as the “primary port,” of a network termination unit (NTU) coupled to each subscriber line of the primary bonding group, and a bonding engine of the NTU fragments the data packets for transmission across the bonding group. Logic, referred to as “link state awareness (LSA) logic,” is configured to monitor at least one communication parameter indicative of the communication performance of the bonding group. If the measured communication performance is within a specified range, the LSA logic disables the primary port. Such action signals a switching element to switch communication to another NTU that is coupled to one or more other subscriber lines for backing up the primary bonding group. Thus, communication is switched to a backup channel based on the measured performance parameter before a complete failure of the primary bonding group occurs.

摘要翻译： 通信系统包括多个用户线路，其被绑定以提供称为“主要绑定组”的绑定组。包括多个数据分组的数据流被发送到被称为“主端口”的端口 ，“耦合到主键合组的每个用户线的网络终端单元（NTU），并且NTU的绑定引擎将数据分组分段跨越绑定组进行传输。 被称为“链路状态感知（LSA）逻辑”的逻辑被配置为监视指示绑定组的通信性能的至少一个通信参数。 如果测量的通信性能在指定范围内，LSA逻辑将禁用主端口。 这样的动作用信号通知交换单元将通信切换到与一个或多个其他用户线路耦合的另一个NTU，用于备份主要绑定组。 因此，在发生主接合组的完全故障之前，基于测量的性能参数将通信切换到备用信道。

公开(公告)号：US20140092872A1

公开(公告)日：2014-04-03

申请号：US14120000

申请日：2012-06-06

申请人： Markus Rentschler

发明人： Markus Rentschler

IPC分类号： H04W36/00

CPC分类号： H04W36/0011 ,  H04L1/22 ,  H04L67/12 ,  H04L69/14 ,  H04L69/40 ,  H04W24/04 ,  H04W36/026 ,  H04W76/15 ,  H04W92/12 ,  H04W92/14

摘要： Apparatus for securely transmitting data between a mobile subscriber (1) having at least one transmission apparatus (2) and a stationary receiver (3), wherein the mobile subscriber (1) can change between a plurality of radio cells (Cell 1, Cell 2, Cell 3) and each radio cell (Cell 1, Cell 2, Cell 3) has at least one transmission apparatus (AP1, AP2, AP3), wherein the at least one transmission apparatus (AP1 to AP3) is also connected in a wired manner to at least one network (LAN A, LAN B), wherein the stationary receiver (3) is likewise connected in a wired manner to the at least one network (LAN A, LAN B), and both the wireless transmission between the mobile subscriber (1) and the transmission apparatus (AP1 to AP3) respectively associated with the latter and the wired data transmission between the transmission apparatus (AP1 to AP3) and the at least one associated network (LAN A, LAN B) are carried out redundantly, and the stationary receiver (3) is redundantly connected in a wired manner to the network (LAN A, LAN B).

摘要翻译： 一种用于在具有至少一个传输设备（2）和固定接收机（3）的移动用户（1）之间安全传输数据的设备，其中所述移动用户（1）可以在多个无线电小区（小区1，小区2 ，小区3）和每个无线电小区（小区1，小区2，小区3）具有至少一个发送装置（AP1，AP2，AP3），其中至少一个发送装置（AP1至AP3）也连接在有线 至少一个网络（LAN A，LAN B）的方式，其中所述固定接收机（3）同样以有线方式连接到所述至少一个网络（LAN A，LAN B），以及所述移动 分别与后者相关联的发送装置（AP1〜AP3）和发送装置（AP1〜AP3）与至少一个关联网络（LAN A，LAN B）之间的有线数据传输被冗余地执行 ，并且固定式接收器（3）以有线方式冗余连接 方式到网络（LAN A，LAN B）。

公开(公告)号：US08625414B1

公开(公告)日：2014-01-07

申请号：US13360867

申请日：2012-01-30

申请人： Rajesh Saluja

发明人： Rajesh Saluja

IPC分类号： H04L1/00

CPC分类号： H04L41/0668 ,  H04L1/22 ,  H04L12/4633 ,  H04L12/4641 ,  H04L45/22 ,  H04L45/28 ,  H04L45/50 ,  H04L45/64 ,  H04L69/40

摘要： Failover of VPN traffic between MPLS tunnels may be accelerated by determining a main and a standby MPLS tunnel for each VPN and passing both the main and standby MPLS tunnel information to the forwarding plane of a network element configured to implement the VPN. In the event of failover of a main MPLS tunnel interface, the forwarding plane may be instructed to use the standby MPLS tunnel instead of the main MPLS tunnel. Since the standby MPLS tunnel has already been determined, and information associated with the standby MPLS tunnel has already been provided to the forwarding plane, it is not necessary to recompute a new MPLS tunnel or reprogram the forwarding plane using the new MPLS tunnel information. By removing control plane operations and control plane-forwarding plane interaction from the handling of failovers, the failover recovery time may be accelerated to under 50 ms, to thereby enable VPN connections to handle time sensitive traffic.

摘要翻译： MPLS隧道之间的VPN流量故障转移可以通过为每个VPN确定主备MPLS通道，并将主MPLS和MPLS备用MPLS隧道信息传递给配置为实现VPN的网元的转发平面，从而加速VPN通道的故障转移。 在主MPLS隧道接口故障转移的情况下，可以指示转发平面使用备用MPLS隧道而不是主MPLS隧道。 由于备用MPLS隧道已经确定，并且与备用MPLS隧道相关联的信息已经提供给转发平面，因此不需要重新计算新的MPLS隧道，或者使用新的MPLS隧道信息重新编程转发平面。 通过从处理故障转移中移除控制平面操作和控制平面转发平面交互，故障转移恢复时间可能会加速到50 ms以下，从而使VPN连接能够处理时间敏感的流量。