公开(公告)号：US20060056563A1

公开(公告)日：2006-03-16

申请号：US11172335

申请日：2005-06-30

申请人： James Aweya ,  Delfin Montuno ,  Michel Ouellette ,  Kent Felske

发明人： James Aweya ,  Delfin Montuno ,  Michel Ouellette ,  Kent Felske

IPC分类号： H03D3/24 ,  H04L7/00

CPC分类号： H03L7/0805 ,  H03D13/002 ,  H03L7/085 ,  H03L7/093 ,  H03L7/0992 ,  H03L7/10 ,  H03L2207/50 ,  H04J3/0658 ,  H04J3/0664

摘要： Network elements may be synchronized over an asynchronous network by implementing a master clock as an all digital PLL that includes a Digitally Controlled Frequency Selector (DCFS), the output frequency of which may be directly controlled through the input of a control word. The PLL causes the control word input to the master DCFS to be adjusted to cause the output of the master DCFS to lock onto a reference frequency. Information associated with the control word is transmitted from the master clock to the slave clocks which are also implemented as DCFSs. By using the transmitted information to recreate the master control word, the slaves may be made to assume the same state as the master DCFS without requiring the slaves to be implemented as PLLs. The DCFS may be formed as a digitally controlled oscillator (DCO) or as a Direct Digital Synthesizer (DDS).

摘要翻译： 网络元件可以通过将主时钟实现为包括数字控制频率选择器（DCFS）的全数字PLL的主时钟同步，其输出频率可以通过控制字的输入直接控制。 PLL会导致对主DCFS的输入控制字进行调整，使主DCFS的输出锁定在参考频率上。 与控制字相关的信息从主时钟发送到也被实现为DCFS的从时钟。 通过使用所发送的信息来重建主控制字，可以使从属设备呈现与主DCFS相同的状态，而不需要将从机实现为PLL。 DCFS可以形成为数字控制振荡器（DCO）或直接数字合成器（DDS）。

公开(公告)号：US06961307B1

公开(公告)日：2005-11-01

申请号：US09900146

申请日：2001-07-09

申请人： James Aweya ,  Michel Ouellette ,  Delfin Y. Montuno

发明人： James Aweya ,  Michel Ouellette ,  Delfin Y. Montuno

IPC分类号： H04L12/56 ,  H04L12/26

CPC分类号： H04L47/30 ,  H04L47/10 ,  H04L47/263 ,  H04L47/32

摘要： A technique for managing a queue so as to distribute losses among different service classes is disclosed. In one embodiment, the technique is realized by classifying an incoming packet into one of a plurality of classes. Each class has an associated weighting factor. The system continuously monitors a queue size and determines an overall packet drop probability based on the actual queue size and a target queue size and calculates a target class drop probability based on the overall packet drop probability and the weighting factor. Finally, the system makes a comparison based on the target class drop probability and a selected value and decides whether to drop the incoming packet based on a result of the comparison. If losses are unavoidable in the system, the technique ensures that the losses will be distributed among the different service classes in inverse proportion to the service price of each class.

摘要翻译： 公开了一种用于管理队列以便在不同服务类别之间分配丢失的技术。 在一个实施例中，该技术通过将输入分组分类为多个类中的一个来实现。 每个类都有相关的加权因子。 系统连续监视队列大小，并根据实际队列大小和目标队列大小确定整体分组丢弃概率，并根据整体分组丢弃概率和权重因子计算目标类丢弃概率。 最后，系统根据目标类丢弃概率和选定值进行比较，并根据比较结果决定是否丢弃传入的数据包。 如果系统中的损失是不可避免的，则该技术可以确保不同服务类别之间的损失与每个类的服务价格成反比。

公开(公告)号：US09064093B1

公开(公告)日：2015-06-23

申请号：US10745065

申请日：2003-12-22

申请人： Kent Felske ,  James Aweya ,  Delfin Montuno ,  Michel Ouellette

发明人： Kent Felske ,  James Aweya ,  Delfin Montuno ,  Michel Ouellette

IPC分类号： G06F21/00

CPC分类号： G06F21/00 ,  G06F21/16 ,  G06F2221/0788

摘要： A system in which data signatures are used to identify copyrighted content passing through a network. The data signatures are derived from files containing copyrighted content to be identified. The signatures are used to search within peer-to-peer data streams flowing through one or more network nodes in a communications network. Any specific technique may be used for pattern recognition between the signatures and the monitored traffic. When a particular file of interest is identified, the system may operate to perform one or more of several possible actions, including stopping the transmission, allowing the transmission but recording the event, making an offer to the recipient allowing them to legally purchase the file, or sending alternative information or intentionally corrupting the information to render it useless to the recipient.

摘要翻译： 使用数据签名来识别经过网络的受版权保护的内容的系统。 数据签名是从包含要识别的受版权保护的内容的文件导出的。 这些签名用于在流经通信网络中的一个或多个网络节点的对等数据流中搜索。 任何具体技术可用于签名和被监视业务之间的模式识别。 当识别出感兴趣的特定文件时，系统可以操作以执行几种可能的动作中的一种或多种，​​包括停止传输，允许传输但记录事件，向接收者提供允许他们合法购买文件的提议， 或发送替代信息或故意破坏信息，使其对接收者无效。

公开(公告)号：US08467418B2

公开(公告)日：2013-06-18

申请号：US12268008

申请日：2008-11-10

申请人： James Aweya ,  Michel Ouellette ,  Delfin Y. Montuno

发明人： James Aweya ,  Michel Ouellette ,  Delfin Y. Montuno

IPC分类号： H04J3/06

CPC分类号： H04L7/0079 ,  G06F1/0328 ,  H03L7/0805 ,  H03L7/085 ,  H03L7/089 ,  H03L2207/50 ,  H04J3/0632 ,  H04J3/0658

摘要： A method, system and master service interface transfer differential timing over a packet network. The transmitting service interface receives a service clock and is coupled to a receiving service interface through a network backplane. A primary reference clock is provided to time the network backplane. The primary reference clock and the service clock are used to synthesize a copy of the service clock connected to the transmitting service interface. A first control word containing an error differential between the service clock and the synthesized copy of the service clock is generated and transmitted through the network backplane via a packet. The first control word, together with the primary reference clock, is used to recreate the service clock for timing the receiving service interface.

摘要翻译： 一种方法，系统和主服务接口通过分组网络传输差分定时。 发送业务接口接收业务时钟，通过网络背板耦合到接收业务接口。 提供主参考时钟来对网络背板进行时间。 主参考时钟和服务时钟用于合成连接到发送服务接口的业务时钟的副本。 生成服务时钟和服务时钟的合成副本之间的误差的第一个控制字，并经由分组通过网络背板发送。 第一个控制字与主参考时钟一起用于重新创建用于定时接收服务接口的服务时钟。

公开(公告)号：US20120182863A1

公开(公告)日：2012-07-19

申请号：US13362319

申请日：2012-01-31

申请人： Michel Ouellette ,  James Aweya ,  Delfin Y. Montuno ,  Kent Felske ,  Michael George Mayer

发明人： Michel Ouellette ,  James Aweya ,  Delfin Y. Montuno ,  Kent Felske ,  Michael George Mayer

IPC分类号： H04L12/44 ,  H04L12/26

CPC分类号： H04L41/12 ,  H04J3/0679

摘要： In response to a network topology change, a clock root node calculates a new clock path for each affected node by building a clock source topology tree, and identifying from that tree a path to the network node from a clock source of higher or equal stratum relative to that network node. The root node then sends a network message to each node indicating the new path that the node should use. Each node receives the message and compares the new path with the existing path. If the paths are different then the node acquires the new path just received in the message. If the paths are the same then the node does nothing and discards the message.

摘要翻译： 响应于网络拓扑变化，时钟根节点通过构建时钟源拓扑树来为每个受影响的节点计算新的时钟路径，并且从该树中识别来自较高或相等层次的时钟源的网络节点的路径 到该网络节点。 根节点然后向每个节点发送一个网络消息，指示节点应该使用的新路径。 每个节点接收消息，并将新路径与现有路径进行比较。 如果路径不同，则节点获取刚刚在消息中接收到的新路径。 如果路径相同，则节点不执行任何操作并丢弃该消息。

公开(公告)号：US07656985B1

公开(公告)日：2010-02-02

申请号：US11279431

申请日：2006-04-12

申请人： James Aweya ,  Michel Ouellette ,  Delfin Y. Montuno ,  Kent Felske

发明人： James Aweya ,  Michel Ouellette ,  Delfin Y. Montuno ,  Kent Felske

IPC分类号： H03D3/24

CPC分类号： H03L7/093 ,  H03L7/0992 ,  H03L7/18 ,  H04J3/0632 ,  H04J3/0664

摘要： A timestamp-based all digital phase locked loop is utilized for clock synchronization for Circuit Emulation Service (“CES”) over packet networks. The all digital phase locked loop at a CES receiver includes a phase detector, a loop filter, a digital oscillator and a timestamp counter. The all digital phase locked loop enables the CES receiver to synchronize a local clock at the receiver with a clock at a CES transmitter, where indications of transmitter clock signals are communicated to the receiver as timestamps. The phase detector is operable to compute an error signal indicative of differences between the timestamps and a local clock signal. The loop filter is operable to reduce jitter and noise in the error signal, and thereby produce a control signal. The digital oscillator is operable to oscillate at a frequency based at least in-part on the control signal, and thereby produce a digital oscillator output signal. The timestamp counter operable to count pulses in the digital oscillator output signal, and output the local clock signal.

摘要翻译： 基于时间戳的全数字锁相环用于通过分组网络进行电路仿真服务（“CES”）的时钟同步。 CES接收机的全数字锁相环包括相位检测器，环路滤波器，数字振荡器和时间戳计数器。 全数字锁相环使得CES接收机能够使接收机处的本地时钟与CES发射机的时钟同步，其中发射机时钟信号的指示作为时间戳传送到接收机。 相位检测器可用于计算指示时间戳与本地时钟信号之间的差异的误差信号。 环路滤波器可操作以减少误差信号中的抖动和噪声，从而产生控制信号。 数字振荡器可操作以至少部分地基于控制信号以频率振荡，从而产生数字振荡器输出信号。 时间戳计数器可用于对数字振荡器输出信号中的脉冲进行计数，并输出本地时钟信号。

公开(公告)号：US07424546B1

公开(公告)日：2008-09-09

申请号：US10426286

申请日：2003-04-30

申请人： James Aweya ,  Michel Ouellette ,  Delfin Montuno ,  Kent Felske

发明人： James Aweya ,  Michel Ouellette ,  Delfin Montuno ,  Kent Felske

IPC分类号： G06F15/16 ,  G06F15/173 ,  G06F11/00

CPC分类号： H04L47/10 ,  H04L43/0894 ,  H04L43/16 ,  H04L47/12 ,  H04L47/193 ,  H04L47/31 ,  H04L47/32 ,  H04L69/02 ,  H04L69/28

摘要： Disclosed is an Active Queue Management method and apparatus which uses traffic rate information for congestion control. Using a nonlinear fluid-flow model of Traffic Control Protocol, a proportional-integral controller in a closed loop configuration with gain settings characterized for stable operation allows a matching of the aggregate rate of the active TCP connections to the available capacity. Further disclosed is a method for calculation of the regime of gain settings for which stable operation of a given network obtains. This approach allows for capacity matching while maintaining minimal queue size and high link utilization.

摘要翻译： 公开了一种使用业务速率信息进行拥塞控制的活动队列管理方法和装置。 使用流量控制协议的非线性流体流模型，闭环配置中的比例积分控制器，其特征在于稳定操作的增益设置允许活动TCP连接的总速率与可用容量的匹配。 还公开了一种用于计算给定网络的稳定操作获得的增益设置的方案的方法。 这种方法允许容量匹配，同时保持最小的队列大小和高的链路利用率。

公开(公告)号：US07359324B1

公开(公告)日：2008-04-15

申请号：US10796321

申请日：2004-03-09

申请人： Michel Ouellette ,  Delfin Montuno ,  James Aweya ,  Kent Felske

发明人： Michel Ouellette ,  Delfin Montuno ,  James Aweya ,  Kent Felske

IPC分类号： H04L12/26

CPC分类号： H04L43/087 ,  H04L43/0852

摘要： A method for dynamically adjusting jitter buffer size according to buffer fill dynamics is disclosed. In one embodiment, an upper threshold and lower threshold for the jitter buffer are identified, wherein the lower buffer threshold identifies a minimum desirable number of packets in the jitter buffer, and the upper buffer threshold identifies a maximum desirable number of packets in the jitter buffer. Operating characteristics of the jitter buffer are monitored to identify instances when the jitter buffer size falls below or exceeds the desired thresholds. When a threshold is crossed, the adaptive algorithm alters the playback offset time, by introducing or deleting packets into the transmission path, to allow the jitter buffer size to return to a desirable target size within the threshold boundaries.

摘要翻译： 公开了一种根据缓冲区填充动态动态调整抖动缓冲区大小的方法。 在一个实施例中，识别抖动缓冲器的上阈值和下阈值，其中下缓冲器阈值标识抖动缓冲器中最小期望数量的分组，并且高缓冲器阈值识别抖动缓冲器中的最大期望数量的分组 。 当抖动缓冲区大小低于或超过所需阈值时，监视抖动缓冲区的操作特性以识别实例。 当超过阈值时，自适应算法通过将分组引入或删除到传输路径来改变播放偏移时间，以允许抖动缓冲器大小在阈值边界内返回到期望的目标大小。

公开(公告)号：US07336611B1

公开(公告)日：2008-02-26

申请号：US10633459

申请日：2003-08-01

申请人： James Aweya ,  Michel Ouellette ,  Delfin Montuno ,  Kent Felske

发明人： James Aweya ,  Michel Ouellette ,  Delfin Montuno ,  Kent Felske

IPC分类号： H04J1/16

CPC分类号： H04L47/10 ,  H04L47/193 ,  H04L47/2408 ,  H04L47/263 ,  H04L47/31 ,  H04L47/32

摘要： Disclosed is a rate-based multi-level Active Queue Management with drop precedence differentiation method and apparatus which uses traffic rate information for congestion control. Using a nonlinear fluid-flow model of Traffic Control Protocol, an integral controller in a closed-loop configuration with gain settings characterized for stable operation allows a matching of the aggregate rate of the active TCP connections to the available capacity. Further disclosed is a method for calculation of the regime of gains over which stable operation of a given network obtains. An enhancement of the basic algorithm provides the ability to drop low-precedence packets in preference to higher precedence packets. This approach allows for a rate-based AQM approach for application in a differentiated service environment.

摘要翻译： 公开了一种基于速率的多级活动队列管理，其具有使用流量信息进行拥塞控制的丢弃优先级分化方法和装置。 使用流量控制协议的非线性流体流模型，闭环配置的集成控制器具有以稳定操作为特征的增益设置，可以将活动TCP连接的总速率与可用容量进行匹配。 进一步公开的是一种用于计算给定网络获得的稳定运行的增益方案的方法。 基本算法的增强提供了优先级较低的优先级报文丢弃能力。 这种方法允许基于速率的AQM方法在差异化服务环境中应用。

公开(公告)号：US07286485B1

公开(公告)日：2007-10-23

申请号：US10680654

申请日：2003-10-07

申请人： Michel Ouellette ,  James Aweya ,  Abel Dasylva ,  Delfin Montuno

发明人： Michel Ouellette ,  James Aweya ,  Abel Dasylva ,  Delfin Montuno

IPC分类号： H04J1/16 ,  H04J3/16 ,  H04L1/00 ,  H04L12/26 ,  H04L12/54

CPC分类号： H04L47/30 ,  H04L47/10 ,  H04L47/263 ,  H04L47/32

摘要： Disclosed is a queue based multi-level Active Queue Management with drop precedence differentiation method and apparatus which uses queue size information for congestion control. The method provides for a lower complexity in parameter configuration and greater ease of configuration over a wide range of network conditions. A key advantage is a greater ability to maintain stabilized network queues, thereby minimizing the occurrences of queue overflows and underflows, and providing high system utilization.

摘要翻译： 公开了一种基于队列的多级活动队列管理，具有使用队列大小信息进行拥塞控制的丢弃优先级微分方法和装置。 该方法提供了参数配置的较低复杂度，并且在广泛的网络条件下更易于配置。 一个关键的优点是维持稳定的网络队列的更大能力，从而最大限度地减少队列溢出和下溢的发生，并提供高系统利用率。