Systems and methods for synchronizing time across networks
    1.
    发明授权
    Systems and methods for synchronizing time across networks 有权
    跨网络同步时间的系统和方法

    公开(公告)号:US07573914B2

    公开(公告)日:2009-08-11

    申请号:US11127354

    申请日:2005-05-12

    Abstract: By equipping receiving devices in a network with synchronizable clocks it is possible to periodically send an “impulse” signal that is received by all of the clocks at the same (or relatively the same) instant of time. The accuracy of the impulse clock need not be high, only that its signal reach all the clocks approximately at the same time. In one embodiment, a transmitting device, upon receipt of the synchronizing impulse signal, sends a packet of data bearing the sending device's epoch time-stamp to a receiving device. The data packet makes its way through the network element to the receiving device and the time-stamp is used by the receiving device to calculate the difference between the epoch time of the receiver and the epoch time of the sender. Effectively, this procedure removes the unknown network element transit times from the equation and allows the devices to operate in a synchronized manner.

    Abstract translation: 通过将接收设备配备在具有可同步时钟的网络中,可以周期性地发送在相同(或相对相同)时刻由所有时钟接收的“脉冲”信号。 脉冲时钟的精度不必高,只是它的信号大致同时到达所有时钟。 在一个实施例中,发送设备在接收到同步脉冲信号时,将携带发送设备的时代时间戳的数据包发送到接收设备。 数据包通过网络元件到接收设备,并且接收设备使用时间戳来计算接收机的时代时间与发送者的时代之间的差异。 有效地,该过程从等式中去除未知网络元件传递时间,并允许设备以同步的方式操作。

    Communications system, apparatus for creating a sub-channel and method therefor
    2.
    发明申请
    Communications system, apparatus for creating a sub-channel and method therefor 有权
    通信系统,用于创建子信道的装置及其方法

    公开(公告)号:US20070253441A1

    公开(公告)日:2007-11-01

    申请号:US11412642

    申请日:2006-04-27

    CPC classification number: H04L43/00 H04L43/12

    Abstract: A communications apparatus includes an input for receiving a data stream being transmitted from a first network node to a second network node using a main channel. A processing resource of the communications apparatus identifies data signifying an idle period within the data stream and determines whether the idle period is at least a suitable minimum duration to support initiating transmission of sub-channel data in place of at least part of the data signifying the idle period. Further, the processing resource is arranged to identify when the idle period is not of the suitable minimum duration and a need arises to transmit the sub-channel data within a predetermined period of time. In such circumstances, the processing resource sends a flow control message upstream to the first network node to halt transmissions therefrom, thereby generating the idle period of at least the suitable minimum duration.

    Abstract translation: 通信装置包括用于接收使用主信道从第一网络节点发送到第二网络节点的数据流的输入。 通信装置的处理资源识别表示数据流内的空闲时段的数据,并且确定空闲周期是否至少是适当的最小持续时间以支持发起子信道​​数据的发送,代替表示该信道数据的数据的至少一部分 闲置时间 此外,处理资源被设置为识别空闲周期何时不具有适当的最小持续时间,并且需要在预定时间段内发送子信道数据。 在这种情况下,处理资源向第一网络节点向上游发送一个流控制消息,以停止其上的传输,从而产生至少适当的最小持续时间的空闲时段。

    Communications apparatus, system and method of creating a sub-channel
    3.
    发明申请
    Communications apparatus, system and method of creating a sub-channel 有权
    通信装置,创建子信道的系统和方法

    公开(公告)号:US20070230550A1

    公开(公告)日:2007-10-04

    申请号:US11394750

    申请日:2006-03-31

    CPC classification number: H04L41/0654 H04L43/0817

    Abstract: A communications apparatus is capable of being disposed in-line in a communications link that supports a main communications channel. The communications link connects a first host to a second host. The communications apparatus comprises an application logic that supports a sub-channel within the main channel. When the main channel is potentially faulty, the application logic is arranged to monitor the main channel to determine an error condition and send a message by replacing data reserved for control purposes in order to communicate the error condition as sub-channel data.

    Abstract translation: 通信装置能够在支持主通信信道的通信链路中在线布置。 通信链路将第一主机连接到第二主机。 通信装置包括支持主信道内的子信道的应用逻辑。 当主通道有可能出现故障时,应用逻辑被设置为监视主通道以确定错误状况,并通过替换保留用于控制目的的数据发送消息,以便将错误状况作为子通道数据进行通信。

    Real time monitoring of TCP flows
    4.
    发明申请
    Real time monitoring of TCP flows 有权
    实时监控TCP流

    公开(公告)号:US20070070916A1

    公开(公告)日:2007-03-29

    申请号:US11519483

    申请日:2006-09-12

    CPC classification number: H04L43/18

    Abstract: A method for real time monitoring of at least one TCP flow involves monitoring TCP packets flowing past a particular point in a TCP network. A flow trace including at least source and destination addresses for each TCP packet is determined and a packet record for each monitored TCP packet within a determined flow trace is created. Each of the packet records includes at least a transmitted order number and an actual received sequence number, from which an expected received sequence number for each packet record is determined and stored in the packet record. The difference between the expected received sequence number for each packet record and the expected received sequence number for the previous packet record is used to thereby determine by how much a particular packet was moved out of sequence.

    Abstract translation: 一种用于实时监测至少一个TCP流的方法涉及监测流过TCP网络中特定点的TCP分组。 确定至少包括每个TCP分组的源地址和目标地址的流迹线,并且创建在所确定的流迹线内的每个被监控的TCP分组的分组记录。 每个分组记录至少包括发送的订单号和实际的接收到的序列号,确定每个分组记录的预期接收到的序列号并将其存储在分组记录中。 使用每个分组记录的预期接收序列号与先前分组记录的预期接收序列号之间的差异,由此确定特定分组被多次移出序列。

    Communications apparatus, system and method of creating a sub-channel
    5.
    发明授权
    Communications apparatus, system and method of creating a sub-channel 有权
    通信装置,创建子信道的系统和方法

    公开(公告)号:US07746949B2

    公开(公告)日:2010-06-29

    申请号:US11394750

    申请日:2006-03-31

    CPC classification number: H04L41/0654 H04L43/0817

    Abstract: A communications apparatus is capable of being disposed in-line in a communications link that supports a main communications channel. The communications link connects a first host to a second host. The communications apparatus comprises an application logic that supports a sub-channel within the main channel. When the main channel is potentially faulty, the application logic is arranged to monitor the main channel to determine an error condition and send a message by replacing data reserved for control purposes in order to communicate the error condition as sub-channel data.

    Abstract translation: 通信装置能够在支持主通信信道的通信链路中在线布置。 通信链路将第一主机连接到第二主机。 通信装置包括支持主信道内的子信道的应用逻辑。 当主通道有可能出现故障时,应用逻辑被设置为监视主通道以确定错误状况,并通过替换保留用于控制目的的数据发送消息,以便将错误状况作为子通道数据进行通信。

    Method and apparatus for testing optical network equipment
    7.
    发明申请
    Method and apparatus for testing optical network equipment 审中-公开
    光网络设备测试方法及装置

    公开(公告)号:US20060291857A1

    公开(公告)日:2006-12-28

    申请号:US11040538

    申请日:2005-01-21

    CPC classification number: H04B10/0779

    Abstract: A method of testing optical network equipment involves plugging a tester device into a standard electrical socket on the optical network equipment to be tested. The tester device communicates with the optical network equipment to be tested via the standard electrical socket, appearing to the optical network equipment as though it was an optical transceiver that would be plugged into the standard electrical socket in normal use. The tester device thus has a plug with the same physical and electrical properties as the optical transceiver, and uses the same electrical signaling protocols and or formats that are used by the optical transceiver.

    Abstract translation: 一种测试光网络设备的方法包括将测试设备插入要测试的光网络设备上的标准电插座中。 测试器设备通过标准电源插座与待测试的光网络设备进行通信,如同在正常使用中插入标准电源插座的光收发器一样,光网络设备出现。 因此,测试器设备具有与光收发器相同的物理和电学特性的插头,并且使用由光收发器使用的相同的电信令协议和/或格式。

    Systems and methods for producing random number distributions in devices having limited processing and storage capabilities
    8.
    发明申请
    Systems and methods for producing random number distributions in devices having limited processing and storage capabilities 有权
    在具有有限处理和存储能力的设备中产生随机数分布的系统和方法

    公开(公告)号:US20060256962A1

    公开(公告)日:2006-11-16

    申请号:US11127487

    申请日:2005-05-12

    CPC classification number: G06F7/58

    Abstract: Arbitrary numerical distributions are presented for use in devices having limited processing and storage capabilities by having the device accept strings of arbitrarily distributed numbers from a source outside of the device. In one embodiment, a master controller creates a table of values which follow the desired minimum, maximum, mean, and standard deviation, etc. of the particular desired statistical distribution required. The created table is then communicated to the limited capacity device and can be used whenever a distribution of random values is required. The master controller could have one of several slave devices associated with it in the system. In another embodiment, where the storage capability of the device is large enough to store a table of values with sufficient different entries to create a distribution of satisfactory “randomness” for the particular application, a random number generator within the device is used to select the order of presentation of the table of values.

    Abstract translation: 通过使设备从设备外部的源接收任意分布的数字的字符串,呈现用于具有有限处理和存储能力的设备的任意数值分布。 在一个实施例中,主控制器创建遵循所需的特定所需统计分布的所需最小值,最大值,平均值和标准偏差等的值表。 然后将创建的表传送到有限容量设备,并且可以在需要随机值的分布时使用。 主控制器可以在系统中具有与其相关联的几个从设备中的一个。 在另一个实施例中,其中设备的存储能力足够大以存储具有足够不同条目的值的表以创建针对特定应用的令人满意的“随机性”的分布,该设备内的随机数生成器用于选择 价值表的呈现顺序。

    Communications network elements and methods of monitoring communications networks
    9.
    发明授权
    Communications network elements and methods of monitoring communications networks 有权
    通信网络元素和监控通信网络的方法

    公开(公告)号:US08140662B2

    公开(公告)日:2012-03-20

    申请号:US10972154

    申请日:2004-10-22

    CPC classification number: H04L43/0817 H04L41/082 H04L43/10

    Abstract: A network element is provided with the capability to perform monitoring and/or measurement functions on the element and the network of which it is a part. The monitoring/measurement functionality is implemented by programmable devices to enable the functionality to be modified and updated without removing the network element from service.

    Abstract translation: 网元具有在作为其一部分的元件和网络上执行监视和/或测量功能的能力。 监控/测量功能由可编程设备来实现,以使得能够修改和更新功能,而无需从网络元件中删除服务。

    Real time monitoring of TCP flows
    10.
    发明授权
    Real time monitoring of TCP flows 有权
    实时监控TCP流

    公开(公告)号:US07945661B2

    公开(公告)日:2011-05-17

    申请号:US11519483

    申请日:2006-09-12

    CPC classification number: H04L43/18

    Abstract: A method for real time monitoring of at least one TCP flow involves monitoring TCP packets flowing past a particular point in a TCP network. A flow trace including at least source and destination addresses for each TCP packet is determined and a packet record for each monitored TCP packet within a determined flow trace is created. Each of the packet records includes at least a transmitted order number and an actual received sequence number, from which an expected received sequence number for each packet record is determined and stored in the packet record. The difference between the expected received sequence number for each packet record and the expected received sequence number for the previous packet record is used to thereby determine by how much a particular packet was moved out of sequence.

    Abstract translation: 一种用于实时监测至少一个TCP流的方法涉及监测流过TCP网络中特定点的TCP分组。 确定至少包括每个TCP分组的源地址和目标地址的流迹线,并且创建在所确定的流迹线内的每个被监控的TCP分组的分组记录。 每个分组记录至少包括发送的订单号和实际的接收到的序列号,确定每个分组记录的预期接收到的序列号并将其存储在分组记录中。 使用每个分组记录的预期接收序列号与先前分组记录的预期接收序列号之间的差异,由此确定特定分组被多次移出序列。

Patent Agency Ranking