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。

公开(公告)号：US07835366B2

公开(公告)日：2010-11-16

申请号：US11362697

申请日：2006-02-27

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： H04L12/28 ,  H04J3/06

CPC分类号： H04J3/065 ,  H04J3/0667

摘要： The invention includes a technique for clock recovery in a network having master and slave clocks in respective Time Division Multiplexing (“TDM”) network segments which are interconnected by a non-TDM segment. Master clock timestamps are sent to the slave. The slave measures a master clock timestamp inter-arrival interval, and sends slave clock timestamps to the master. The master measures a slave clock timestamp inter-arrival interval, and sends that slave clock timestamp inter-arrival interval to the slave. The slave then calculates an error signal based at least in-part on the difference between the master clock timestamp inter-arrival interval and the slave clock timestamp inter-arrival interval, and employs the difference to recover the first service clock in the second TDM segment.

摘要翻译： 本发明包括一种用于在通过非TDM分段互连的相应时分复用（“TDM”）网段中的主时钟和从时钟的网络中的时钟恢复技术。 主时钟时间戳被发送到从机。 从站测量主时钟时间戳到达间隔时间，并向主机发送从时钟时间戳。 主机测量从时钟时间戳到达间隔时间，并将从属时钟时间戳到到达间隔发送到从机。 然后，从设备至少部分地基于主时钟间隔到达间隔和从时钟时间戳到达间隔之间的差异来计算误差信号，并且采用差异来恢复第二TDM段中的第一服务时钟 。

公开(公告)号：US20070097902A1

公开(公告)日：2007-05-03

申请号：US11294146

申请日：2005-12-05

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： H04B7/212

CPC分类号： H04J3/0658

摘要： Where a common network clock is available at both a TDM receiver and a TDM transmitter which communicate via a packet network, differential clock recovery can be accomplished by matching the number of service clock pulses in a network reference clock period at the transmitter and receiver. In one embodiment the transmitter need only send a counter value from a counter that is clocked and reset, respectively, by the service clock and network reference clock, thereby allowing use of different types of oscillators, both analog and digital, to be implemented at the transmitter and receiver. The technique is also general enough to be applied in a wide variety of packet networks including but not limited to IP, MPLS and Ethernet. In an alternative embodiment, a faster derived network clock fdnc drives both the transmitter and receiver counters, which in turn are reset, respectively by the slower transmitter service clock fsc and slower receiver service clock frc.

摘要翻译： 在通过分组网络进行通信的TDM接收机和TDM发射机都可以使用公共网络时钟的情况下，差分时钟恢复可以通过在发射机和接收机的网络参考时钟周期内匹配服务时钟脉冲的数量来实现。 在一个实施例中，发射机仅需要通过服务时钟和网络参考时钟分别从计时器发送计数器值并将其复位，从而允许使用不同类型的模拟和数字振荡器来实现 发射机和接收机。 该技术也足以应用于各种分组网络，包括但不限于IP，MPLS和以太网。 在替代实施例中，更快的导出网络时钟fndnc驱动发射机和接收机计数器，发射机和接收机计数器又分别由较慢的发射机业务时钟f SC和 较慢的接收机服务时钟f 。

公开(公告)号：US20060242445A1

公开(公告)日：2006-10-26

申请号：US11394705

申请日：2006-03-31

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 ,  G06F1/12

CPC分类号： H03L7/08 ,  H03L2207/50

摘要： A method and apparatus for designing a PLL enables initial component characteristics and design specifications of the PLL to be specified. Time constants for a loop filter that would be required to create a PLL having the desired design specifications and component characteristics are then computed. The performance or behavior characteristics of the PLL may then be computed for the PLL given the time constants and the initial set of components, to determine whether the performance of the PLL would be considered satisfactory. For example, PLL design software may determine whether a PLL would be sufficiently stable if it was to be created using the particular selected components given the required design specifications. Where the PLL does not meet particular behavior characteristics, the PLL design software may provide guidance as to what component characteristics would improve performance of the PLL. Designed PLLs may be used for timestamp based clock synchronization.

公开(公告)号：US20060056560A1

公开(公告)日：2006-03-16

申请号：US11172100

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： H04L7/00

CPC分类号： H03L7/0992 ,  H04J3/0664

摘要： A first level of control over operation of slave Digitally Controlled Frequency Selectors (DCFSs), such as DCOs or DDSs, may occur by periodic transmission of control words from the master clock to the slave clocks. To allow enhanced control over the output of the slave clocks, the frequency of the local oscillator used to generate the synthesized output of the master clock may also be conveyed to the slave clocks to allow a second level of control to take place. The second level of control allows the local oscillators at the slave clocks to lock onto the frequency of the master local oscillator to thereby allow the slave local oscillators to operate the slave DCFSs using the same local oscillator frequency. The first level of control synchronizes operation of the DCFSs while the second level control prevents instabilities in the local oscillators from causing long term drift between the slave and master clock outputs. Timestamps may be used to synchronize the master and slave local oscillators.

公开(公告)号：US07277391B1

公开(公告)日：2007-10-02

申请号：US10426763

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： G01R31/08

CPC分类号： H04L47/10 ,  H04L47/12 ,  H04L47/32

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 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 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，闭环配置中的比例控制器具有用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。 进一步公开了一种用于计算给定网络的稳定运行获得的增益方案的方法。 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：US07996895B2

公开(公告)日：2011-08-09

申请号：US11277555

申请日：2006-03-27

申请人： Wenfeng Chen ,  Michel Ouellette ,  Delfin Montuno ,  Kent Felske

发明人： Wenfeng Chen ,  Michel Ouellette ,  Delfin Montuno ,  Kent Felske

IPC分类号： G06F11/00

CPC分类号： H04L67/104 ,  H04L63/0227 ,  H04L63/145 ,  H04L67/1085

摘要： A traffic controller is provided which integrates black-box tests of unauthorized applications to extract application characteristics from associated Internet traffic, exploits the networking information learned by host clients, actively scans and controls hosts on the corporate network, and dynamically configures a corporate firewall to block traffic to and from critical application network elements. As a result, the traffic controller effectively manages unauthorized applications and their associated traffic in a corporate environment.

摘要翻译： 提供流量控制器，集成了未经授权的应用程序的黑匣子测试，从相关的Internet流量中提取应用特征，利用主机客户学习的网络信息，主动扫描和控制企业网络上的主机，并动态配置企业防火墙以阻止 来往关键应用网络元件的流量。 因此，流量控制器可有效地管理未经授权的应用程序及其在企业环境中的相关流量。

公开(公告)号：US08230513B2

公开(公告)日：2012-07-24

申请号：US13169627

申请日：2011-06-27

申请人： Wenfeng Chen ,  Michel Ouellette ,  Delfin Montuno ,  Kent Felske

发明人： Wenfeng Chen ,  Michel Ouellette ,  Delfin Montuno ,  Kent Felske

IPC分类号： H04L29/06

CPC分类号： H04L67/104 ,  H04L63/0227 ,  H04L63/145 ,  H04L67/1085

摘要： A traffic controller is provided which integrates black-box tests of unauthorized applications to extract application characteristics from associated Internet traffic, exploits the networking information learned by host clients, actively scans and controls hosts on the corporate network, and dynamically configures a corporate firewall to block traffic to and from critical application network elements. As a result, the traffic controller effectively manages unauthorized applications and their associated traffic in a corporate environment.

摘要翻译： 提供流量控制器，集成了未经授权的应用程序的黑匣子测试，从相关的Internet流量中提取应用特征，利用主机客户学习的网络信息，主动扫描和控制企业网络上的主机，并动态配置企业防火墙以阻止 来往关键应用网络元件的流量。 因此，流量控制器可有效地管理未经授权的应用程序及其在企业环境中的相关流量。

公开(公告)号：US20110320596A1

公开(公告)日：2011-12-29

申请号：US13169627

申请日：2011-06-27

申请人： Wenfeng Chen ,  Michel Ouellette ,  Delfin Montuno ,  Kent Felske

发明人： Wenfeng Chen ,  Michel Ouellette ,  Delfin Montuno ,  Kent Felske

IPC分类号： G06F15/173

CPC分类号： H04L67/104 ,  H04L63/0227 ,  H04L63/145 ,  H04L67/1085

摘要： A traffic controller is provided which integrates black-box tests of unauthorized applications to extract application characteristics from associated Internet traffic, exploits the networking information learned by host clients, actively scans and controls hosts on the corporate network, and dynamically configures a corporate firewall to block traffic to and from critical application network elements. As a result, the traffic controller effectively manages unauthorized applications and their associated traffic in a corporate environment.

摘要翻译： 提供流量控制器，集成了未经授权的应用程序的黑匣子测试，从相关的Internet流量中提取应用特征，利用主机客户学习的网络信息，主动扫描和控制企业网络上的主机，并动态配置企业防火墙以阻止 来往关键应用网络元件的流量。 因此，流量控制器可有效地管理未经授权的应用程序及其在企业环境中的相关流量。