公开(公告)号：US07191355B1

公开(公告)日：2007-03-13

申请号：US10888421

申请日：2004-07-09

申请人： Michel Ouellette ,  Jeganathan Markandu ,  James Aweya ,  Delfin Montuno

发明人： Michel Ouellette ,  Jeganathan Markandu ,  James Aweya ,  Delfin Montuno

IPC分类号： G06F1/12 ,  H04L12/28

CPC分类号： G06F1/12 ,  H04J3/0632 ,  H04L2012/6489

摘要： A clock synchronization backup mechanism is disclosed for maintaining clock synchronization during periods of degraded synchronization. The clock synchronization backup mechanism includes a jitter buffer having a fill value at a given sample time which is compared with a threshold. When the jitter buffer fill value exceeds the threshold, a non-normal condition is registered and the local clock frequency is set to a combination of a long-term frequency setting plus a threshold sensitive frequency adjustment. The clock synchronization backup mechanism is particularly useful for overcoming residual errors accumulated due to temperature change, oscillator degradation, and a variety of other system perturbations problematical for clock synchronization mechanisms known in the art.

摘要翻译： 公开了一种时钟同步备份机制，用于在降级同步期间维持时钟同步。 时钟同步备份机制包括抖动缓冲器，该抖动缓冲器在给定采样时间具有与阈值进行比较的填充值。 当抖动缓冲区填充值超过阈值时，注册非正常条件，并将本地时钟频率设置为长期频率设置加阈值敏感频率调整的组合。 时钟同步备份机制对于克服由于温度变化，振荡器衰减以及本领域已知的时钟同步机制的各种其他系统扰动而累积的残余误差特别有用。

公开(公告)号：US07492732B2

公开(公告)日：2009-02-17

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fdnc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被较慢的发射机业务时钟fsc和较慢的接收机业务时钟frc复位。

公开(公告)号：US20070097947A1

公开(公告)日：2007-05-03

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： 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站。 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：US07684333B1

公开(公告)日：2010-03-23

申请号：US11191485

申请日：2005-07-28

申请人： Abel Clement Dasylva ,  Zhonghui Yao ,  Delfin Montuno ,  Michel Ouellette ,  James Aweya ,  Wenfeng Chen ,  Kent Felske

发明人： Abel Clement Dasylva ,  Zhonghui Yao ,  Delfin Montuno ,  Michel Ouellette ,  James Aweya ,  Wenfeng Chen ,  Kent Felske

IPC分类号： H04L5/12 ,  G01R3/08 ,  G06F11/00 ,  G08C15/00

CPC分类号： H04L5/0037 ,  H04L5/0064

摘要： A method and system for allocating bandwidth of a wireless channel to different types of traffic includes partitioning the bandwidth of the wireless channel into a plurality of contention periods. Traffic flows are associated with access categories, and one or more of the access categories are assigned to each contention period. During at least one of the contention periods, traffic flows associated with a proper subset of the access categories contend for access to the wireless channel.

摘要翻译： 将无线信道的带宽分配给不同类型的业务的方法和系统包括将无线信道的带宽划分成多个争用周期。 业务流与访问类别相关联，并且一个或多个访问类别被分配给每个争用期。 在至少一个竞争时段期间，与访问类别的适当子集相关联的业务流竞争访问无线信道。

公开(公告)号：US07409020B1

公开(公告)日：2008-08-05

申请号：US10732532

申请日：2003-12-11

申请人： Aneta Wyrzykowska ,  Kah Ming Soh ,  James Aweya ,  Delfin Montuno ,  Michel Ouellette

发明人： Aneta Wyrzykowska ,  Kah Ming Soh ,  James Aweya ,  Delfin Montuno ,  Michel Ouellette

IPC分类号： H04B1/10

CPC分类号： H03L7/093 ,  H04J3/0632

摘要： A technique for filter-enhanced clock synchronization is disclosed. In one particular exemplary embodiment, the technique may be realized by/as a method for filter-enhanced clock synchronization. The method comprises subjecting a clock error signal to a first exponentially weighted moving average (EWMA) filter to generate a first output signal, where the first EWMA filter comprises a first gain element. And the method further comprises subjecting the first output signal to a second EWMA filter to generate a second output signal, where the second EWMA filter comprises a second gain element and the second EWMA filter is coupled with a feedback loop having a delay element and a summing junction.

摘要翻译： 公开了一种用于滤波器增强时钟同步的技术。 在一个特定的示例性实施例中，该技术可以通过/作为滤波器增强时钟同步的方法来实现。 该方法包括使时钟误差信号经受第一指数加权移动平均（EWMA）滤波器以产生第一输出信号，其中第一EWMA滤波器包括第一增益元件。 并且该方法还包括使第一输出信号经受第二EWMA滤波器以产生第二输出信号，其中第二EWMA滤波器包括第二增益元件，而第二EWMA滤波器与具有延迟元件的反馈回路耦合， 交界处

公开(公告)号：US07298699B1

公开(公告)日：2007-11-20

申请号：US10426289

申请日：2003-04-30

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

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

IPC分类号： H04L12/26

CPC分类号： H04L47/31 ,  H04L41/142 ,  H04L43/00 ,  H04L43/022 ,  H04L43/0894 ,  H04L43/16 ,  H04L47/10 ,  H04L47/18

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, 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 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，具有以稳定操作为特征的增益设置的闭环配置中的集成控制器允许活动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：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：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：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。