公开(公告)号：US20100057917A1

公开(公告)日：2010-03-04

申请号：US12614074

申请日：2009-11-06

申请人： Wenhua Xu ,  Xiaomin Shi ,  Jianfeng Liu ,  Yan Li

发明人： Wenhua Xu ,  Xiaomin Shi ,  Jianfeng Liu ,  Yan Li

IPC分类号： G06F15/173

CPC分类号： H04L41/50 ,  G06F9/5055 ,  H04L67/02 ,  H04L67/16 ,  H04L67/32

摘要： The present invention relates to a method for handling and replacing a service. The method for handling a composite service may include obtaining a concrete service corresponding to a service invocation segment description in a composite service logic, wherein the service invocation segment is an abstract service invocation segment or a service template invocation segment; triggering a service replacement, requesting to replace the service invocation segment with a concrete service invocation segment of the obtained concrete service; or, triggering a service invocation, requesting to generate a service invocation based on the concrete service. Accordingly, a concrete service can be dynamically selected when the composite service logic is being executed.

摘要翻译： 本发明涉及一种处理和更换服务的方法。 用于处理复合服务的方法可以包括获得与组合服务逻辑中的服务调用段描述相对应的具体服务，其中服务调用段是抽象服务调用段或服务模板调用段; 触发服务替换，请求用所获得的具体服务的具体服务调用段替换服务调用段; 或者，触发服务调用，请求基于具体服务生成服务调用。 因此，当正在执行组合服务逻辑时，可以动态地选择具体的服务。

公开(公告)号：US07502461B2

公开(公告)日：2009-03-10

申请号：US10883666

申请日：2004-07-06

申请人： Jianfeng Liu

发明人： Jianfeng Liu

IPC分类号： H04M9/08

CPC分类号： H04B3/23

摘要： A method of canceling an echo in a signal of a communication network may include filtering an input signal and a corresponding reference signal of an echo path so as to produce vectors of N subband signals corresponding to the input signal and N subband reference echo signals corresponding to the reference signal. Vectors corresponding to a subset of the N subband signals may be adaptively adjusted to form modified vectors of the subset which approximate the corresponding N subband reference echo signals. Based on the modified vectors, subband errors related to a residual echo for each of the subband signals of the subset may be determined. The subband errors may be synthesized to generate a full-band signal with a synthesized residual echo.

摘要翻译： 消除通信网络的信号中的回波的方法可以包括对输入信号和回波路径的相应参考信号进行滤波，以便产生对应于输入信号的N个子带信号和对应于N个子带参考回波信号的矢量 参考信号。 可以自适应地调整对应于N个子带信号的子集的向量，以形成近似对应的N个子带参考回波信号的子集的修改向量。 基于修改的矢量，可以确定与子集的每个子带信号的残差回波相关的子带误差。 可以合成子带误差以产生具有合成残差回波的全频带信号。

公开(公告)号：US06792106B1

公开(公告)日：2004-09-14

申请号：US09398016

申请日：1999-09-17

申请人： Jianfeng Liu

发明人： Jianfeng Liu

IPC分类号： H04M908

CPC分类号： H04B3/234

摘要： An echo canceller and a method of echo cancellation using an NLMS algorithm. The NLMS algorithm alternates adaptation between a slow mode, aggressive mode, and inhibition mode, according to the status of the echo canceller. This implementation requires no correlation information. This implementation is simple and not very time consuming. During initial conversation, the NLMS algorithm is in an aggressive mode to ensure fast convergence. After convergence, the NLMS algorithm switches to a slow mode for lower residual echo return. Whenever an abrupt increase of residual echo caused by either double talk or echo path change is detected, the current adaptive filter coefficients are retained and then updated in the aggressive mode. The decision as to which echo estimation (the response of the retained filter or the response of the aggressively adapted filter) is subtracted from the reference echo for echo cancellation within a short detection delay period is determined according to the Geigel algorithm. After the short delay, the NLMS algorithm makes a more accurate determination of double talk or echo path occurrence. If double talk is detected according to the more accurate determination, then the retained filter taps are applied to yield the residual echo and the inhibition mode is chosen and maintained until the error signal again decreases to the pre-changed value range. Otherwise, the aggressively adapted filter taps are applied to yield the residual echo and the system switches to aggressive mode adaptation until a new convergence is achieved. This implementation also has high convergence rate, high stability, and a small detection delay.

摘要翻译： 回波消除器和使用NLMS算法的回波消除方法。 根据回波消除器的状态，NLMS算法在慢速模式，积极模式和抑制模式之间交替适配。 该实现不需要相关信息。 这个实现是简单的并且不是很耗时。 在初始会话期间，NLMS算法处于积极的模式，以确保快速收敛。 收敛后，NLMS算法切换到较低的残差回波回波模式。 每当检测到双向通话或回波路径变化引起的残余回波的突然增加时，保持当前的自适应滤波器系数，然后以积极的方式更新。 根据Geigel算法确定在短检测延迟时间内从用于回波消除的参考回波中减去哪个回波估计（保留滤波器的响应或积极适应滤波器的响应）的决定。 在短时间延迟之后，NLMS算法可以更准确地确定双通道或回波路径的发生。 如果根据更准确的确定检测到双方通话，则应用保留的滤波器抽头以产生残余回波，并且选择并保持抑制模式，直到误差信号再次降低到预先改变的值范围。 否则，应用积极适应的滤波器抽头以产生残余回波，并且系统切换到积极模式适应，直到实现新的收敛。 该实现也具有收敛速度快，稳定性高，检测延迟小的优点。

公开(公告)号：US09036561B2

公开(公告)日：2015-05-19

申请号：US14348555

申请日：2012-09-06

申请人： Xiangqing Chang ,  Jianfeng Liu ,  Min Yao ,  Zhonghua Gao ,  Liyao Zhao

发明人： Xiangqing Chang ,  Jianfeng Liu ,  Min Yao ,  Zhonghua Gao ,  Liyao Zhao

IPC分类号： H04W4/00 ,  H04W60/00 ,  H04L12/24 ,  H04L12/721 ,  H04L12/707 ,  H04L12/703 ,  H04L12/723

CPC分类号： H04W60/005 ,  H04L41/0846 ,  H04L45/22 ,  H04L45/28 ,  H04L45/50 ,  H04L45/68

摘要： Examples of the present disclosure provide a dual-homing protection method and device. In the dual-homing protection method, a forwarding item synchronizing channel and a data transfer channel are established between two Provider Edge (PE) devices in a dual-homing node, a Pseudo Wire (PW) and a Label Switched Path (LSP) protection group bearing the PW are established between a network side peer PE device and the two PE devices in the dual-homing node, which are taken as a logical device, so as to implement LSP protection within a network. The present disclosure may enable the protection within a network to be independent of access link protection. Subsequently, the management is simple.

摘要翻译： 本公开的示例提供了双归属保护方法和装置。 在双归属保护方法中，在双归属节点中的两个提供商边缘（PE）设备，伪线（PW）和标签交换路径（LSP）保护之间建立转发项目同步信道和数据传输信道 在网络侧对端PE设备与作为逻辑设备的双归属节点中的两个PE设备之间建立携带PW的组，以实现网络内的LSP保护。 本公开可以使网络内的保护能够独立于接入链路保护。 随后，管理很简单。

公开(公告)号：US20130010614A1

公开(公告)日：2013-01-10

申请号：US13387319

申请日：2011-03-29

申请人： Tao Lin ,  Jianfeng Liu

发明人： Tao Lin ,  Jianfeng Liu

IPC分类号： H04L12/56 ,  H04L12/26

CPC分类号： H04L12/2898 ,  H04L29/12226 ,  H04L29/12358 ,  H04L29/12575 ,  H04L61/2015 ,  H04L61/251 ,  H04L61/2592 ,  H04L69/08 ,  H04L69/16 ,  H04L69/161 ,  H04L69/167 ,  H04L69/22

摘要： Disclosed is a method and apparatus for processing packets in an IPv6 network. A CPE (Customer-Premises Equipment) replaces source address information in an IP packet with external address information after receiving the IP packet from a user terminal, stores a mapping relation between the source address information and the external address information; converts the IP packet into an IPv6 packet, and transmits the IPv6 packet to an NPE (Network-Premises Equipment) via an IPv6 tunnel between the CPE and the NPE; receives a second IP packet from the NPE via the IPv6 tunnel, converts the second IP packet according to destination address information in the second IP packet, replaces the destination address information in the converted second IP packet with the source address information corresponding to the destination address information in the mapping relation, and transmits the second IP packet to the user terminal.

摘要翻译： 公开了一种在IPv6网络中处理分组的方法和装置。 CPE（客户驻地设备）在从用户终端接收到IP分组之后，用IP地址信息替换IP分组中的源地址信息，存储源地址信息和外部地址信息之间的映射关系; 将IP数据包转换为IPv6数据包，并通过CPE与NPE之间的IPv6隧道将IPv6数据包发送到NPE（网络驻地设备）; 通过IPv6隧道从NPE接收第二个IP包，根据第二个IP包中的目的地址信息转换第二个IP包，用转换后的第二个IP包中的目的地址信息替换与目的地址对应的源地址信息 映射关系中的信息，并将第二IP分组发送到用户终端。

公开(公告)号：US08181525B2

公开(公告)日：2012-05-22

申请号：US12689785

申请日：2010-01-19

申请人： Jianfeng Liu ,  Heping Xie ,  Jin Xu

发明人： Jianfeng Liu ,  Heping Xie ,  Jin Xu

IPC分类号： G01N29/14

CPC分类号： G01N33/38 ,  G01N29/14 ,  G01N29/223 ,  G01N2291/0232 ,  Y10T29/49826

摘要： A universal acoustic emission test sensor fixing device includes a radial positioning mechanism, supporting mechanisms, bases, acoustic emission test sensor mounting mechanisms, and parallelism adjusting members, in which the supporting mechanism includes a main supporting arm and an auxiliary supporting arm, with one end of the auxiliary supporting arm fixedly connected to or hinged with the main supporting arm and the other end being provided with a ball head, and a parallelism adjusting member mounting mechanism is provided at the joint of the main supporting arm and the auxiliary supporting arm, and the base is provided with a spherical hole.

摘要翻译： 通用声发射测试传感器固定装置包括径向定位机构，支撑机构，底座，声发射测试传感器安装机构和平行度调节构件，其中支撑机构包括主支撑臂和辅助支撑臂，一端 辅助支撑臂固定地连接到主支撑臂或与主支撑臂铰接，另一端设置有球头，并且平行调节构件安装机构设置在主支撑臂和辅助支撑臂的接头处，并且 基部设有球形孔。

公开(公告)号：US20060007872A1

公开(公告)日：2006-01-12

申请号：US10883666

申请日：2004-07-06

申请人： Jianfeng Liu

发明人： Jianfeng Liu

IPC分类号： H04B3/20 ,  H04M9/08

CPC分类号： H04B3/23

摘要： A method of canceling an echo in a signal of a communication network may include filtering an input signal and a corresponding reference signal of an echo path so as to produce vectors of N subband signals corresponding to the input signal and N subband reference echo signals corresponding to the reference signal. Vectors corresponding to a subset of the N subband signals may be adaptively adjusted to form modified vectors of the subset which approximate the corresponding N subband reference echo signals. Based on the modified vectors, subband errors related to a residual echo for each of the subband signals of the subset may be determined. The subband errors may be synthesized to generate a full-band signal with a synthesized residual echo.