公开(公告)号：US20120314577A1

公开(公告)日：2012-12-13

申请号：US13589890

申请日：2012-08-20

申请人： Tuanhui Sun ,  Defeng Li ,  Hao Su ,  Aijuan Cao ,  Jian Song

发明人： Tuanhui Sun ,  Defeng Li ,  Hao Su ,  Aijuan Cao ,  Jian Song

IPC分类号： H04L12/56

CPC分类号： H04L47/12 ,  H04L47/26 ,  H04L49/3027 ,  H04L49/506 ,  H04L49/552

摘要： A method for implementing flow control in a switch fabric includes: sending, by each input port, request information to a destination output port where no packet congestion occurs; according to respective back pressure information, determining, by the destination output port which receives the request information, whether to return grant information to each input port to establish a matching relationship between each input port and the destination output port which returns the grant information; according to the matching relationship, scheduling, by each input port, a cell to a destination output port that is matched with each input port. Through the embodiments of the present invention, quantity of information transmitted between an input port and an output port is reduced, the design of the switch fabric is simplified, and data processing efficiency in the switch fabric is improved.

摘要翻译： 一种用于在交换结构中实现流控制的方法，包括：通过每个输入端口将请求信息发送到不发生分组拥塞的目的地输出端口; 根据相应的背压信息，通过接收请求信息的目的地输出端口确定是否向每个输入端口返回授权信息，以建立返回授权信息的每个输入端口和目的地输出端口之间的匹配关系; 根据匹配关系，通过每个输入端口将单元调度到与每个输入端口匹配的目的地输出端口。 通过本发明的实施例，减少了在输入端口和输出端口之间传输的信息量，简化了交换结构的设计，提高了交换结构的数据处理效率。

公开(公告)号：US08797860B2

公开(公告)日：2014-08-05

申请号：US13589890

申请日：2012-08-20

申请人： Tuanhui Sun ,  Defeng Li ,  Hao Su ,  Aijuan Cao ,  Jian Song

发明人： Tuanhui Sun ,  Defeng Li ,  Hao Su ,  Aijuan Cao ,  Jian Song

IPC分类号： H04L12/26 ,  H04L12/28 ,  H04L12/56

CPC分类号： H04L47/12 ,  H04L47/26 ,  H04L49/3027 ,  H04L49/506 ,  H04L49/552

摘要： A method for implementing flow control in a switch fabric includes: sending, by each input port, request information to a destination output port where no packet congestion occurs; according to respective back pressure information, determining, by the destination output port which receives the request information, whether to return grant information to each input port to establish a matching relationship between each input port and the destination output port which returns the grant information; according to the matching relationship, scheduling, by each input port, a cell to a destination output port that is matched with each input port. Through the embodiments of the present invention, quantity of information transmitted between an input port and an output port is reduced, the design of the switch fabric is simplified, and data processing efficiency in the switch fabric is improved.

摘要翻译： 一种用于在交换结构中实现流控制的方法，包括：通过每个输入端口将请求信息发送到不发生分组拥塞的目的地输出端口; 根据相应的背压信息，通过接收请求信息的目的地输出端口确定是否向每个输入端口返回授权信息，以建立返回授权信息的每个输入端口和目的地输出端口之间的匹配关系; 根据匹配关系，通过每个输入端口将单元调度到与每个输入端口匹配的目的地输出端口。 通过本发明的实施例，减少了在输入端口和输出端口之间传输的信息量，简化了交换结构的设计，提高了交换结构的数据处理效率。

公开(公告)号：US08570976B2

公开(公告)日：2013-10-29

申请号：US12197412

申请日：2008-08-25

申请人： Xuezeng Pan ,  Jun Guan ,  Lingdi Ping ,  Jiong Chen ,  Defeng Li

发明人： Xuezeng Pan ,  Jun Guan ,  Lingdi Ping ,  Jiong Chen ,  Defeng Li

IPC分类号： H04W4/00 ,  H04L12/66 ,  H04L12/28

CPC分类号： H04W36/0016 ,  H04W8/085 ,  H04W8/26 ,  H04W48/16 ,  H04W80/04

摘要： A method and system for fast handover in hierarchical mobile IPv6 includes: a mobile node which transmits a proxy route request message to a previous access router of the mobile node according to a handover expectation provided by the link layer, the previous access router transmits a network prefix information of a new access router of the mobile node to the mobile node; the mobile node which generates new care-of address according to the network prefix information; after the mobile node moves to a target network, an optimistic duplicate address detection is performed on the care-of address. The disclosure can simplify the handover procedure of hierarchical mobile IPV6 of the mobile node, reduce the signaling interaction in handover process, and shorten handover delay.

摘要翻译： 分级移动IPv6中快速切换的方法和系统包括：根据由链路层提供的切换期望向移动节点的先前接入路由器发送代理路由请求消息的移动节点，先前接入路由器发送网络 移动节点的新接入路由器的前缀信息到移动节点; 所述移动节点根据所述网络前缀信息生成新的转交地址; 在移动节点移动到目标网络之后，对转交地址执行乐观的重复地址检测。 本发明可以简化移动节点的分层移动IPV6的切换过程，减少切换过程中的信令交互，缩短切换延迟。

公开(公告)号：US07650637B2

公开(公告)日：2010-01-19

申请号：US10586604

申请日：2005-01-12

申请人： Defeng Li ,  Guoping Li ,  Bin Li

发明人： Defeng Li ,  Guoping Li ,  Bin Li

IPC分类号： H04L29/00

CPC分类号： H04L12/4641 ,  H04L45/02 ,  H04L45/04 ,  H04L45/50 ,  H04L63/0272

摘要： A system for ensuring quality of service (QoS) in a virtual private network and a method thereof are provided. The system includes a logical bearer network, which is formed by connecting label switch paths configured with preserving bandwidth to routers, and is dedicated to transmit QoS service data; and a bearer control network, which is used to maintain logical bearer network, allocate route, mark service priority, and route service data to opposite end. The method includes the steps of: A. constructing a logical bearer network to transmit QoS service data by configuring label switch paths with preserved bandwidth; B. providing a centralized resource controller to manage resources of the logical bearer network; C. if QoS service data is to be transmitted, marking service priority in QoS field of the routing labels of multi-protocol label switch data packets, and routing service data to the opposite end.

摘要翻译： 提供了一种用于确保虚拟专用网络中的服务质量（QoS）的系统及其方法。 该系统包括通过将配置有保留带宽的标签交换路径连接到路由器而形成的逻辑承载网，专用于传输QoS服务数据; 以及承载控制网络，用于维护逻辑承载网，分配路由，标记业务优先级，并将业务数据路由到对端。 该方法包括以下步骤：A.通过配置带有保留带宽的标签交换路径，构建逻辑承载网，传输QoS业务数据; B.提供集中资源控制器来管理逻辑承载网的资源; C.如果要发送QoS服务数据，则在多协议标签交换机数据包的路由标签的QoS字段中标记服务优先级，并将路由服务数据转发到对端。

公开(公告)号：US20080172732A1

公开(公告)日：2008-07-17

申请号：US10586604

申请日：2005-01-12

申请人： Defeng Li ,  Guoping Li ,  Bin Li

发明人： Defeng Li ,  Guoping Li ,  Bin Li

IPC分类号： H04L12/00

CPC分类号： H04L12/4641 ,  H04L45/02 ,  H04L45/04 ,  H04L45/50 ,  H04L63/0272

摘要： A system for ensuring quality of service (QoS) in a virtual private network and a method thereof are provided. The system includes a logical bearer network, which is formed by connecting label switch paths configured with preserving bandwidth to routers, and is dedicated to transmit QoS service data; and a bearer control network, which is used to maintain logical bearer network, allocate route, mark service priority, and route service data to opposite end. The method includes the steps of: A. constructing a logical bearer network to transmit QoS service data by configuring label switch paths with preserved bandwidth; B. providing a centralized resource controller to manage resources of the logical bearer network; C. if QoS service data is to be transmitted, marking service priority in QoS field of the routing labels of multi-protocol label switch data packets, and routing service data to the opposite end.

摘要翻译： 提供了一种用于确保虚拟专用网络中的服务质量（QoS）的系统及其方法。 该系统包括通过将配置有保留带宽的标签交换路径连接到路由器而形成的逻辑承载网，专用于传输QoS服务数据; 以及承载控制网络，用于维护逻辑承载网，分配路由，标记业务优先级，并将业务数据路由到对端。 该方法包括以下步骤：A.通过配置带有保留带宽的标签交换路径，构建逻辑承载网，传输QoS业务数据; B.提供集中资源控制器来管理逻辑承载网的资源; C.如果要发送QoS服务数据，则在多协议标签交换机数据包的路由标签的QoS字段中标记服务优先级，并将路由服务数据转发到对端。

公开(公告)号：US07733883B2

公开(公告)日：2010-06-08

申请号：US10587538

申请日：2005-01-28

申请人： Bin Li ,  Defeng Li

发明人： Bin Li ,  Defeng Li

IPC分类号： H04L12/28

CPC分类号： H04L12/4633 ,  H04L12/465 ,  H04L47/724 ,  H04L47/825

摘要： A method for implementing a virtual leased line (VLL) is provided. The method includes the steps of: configuring a virtual local area network (VLAN) label stack on the basis of VLAN QinQ technique; configuring a VLAN QinQ switching device and a multi-protocol label switching device to communicate with each other; extending a label distribution protocol (LDP) to support encapsulation of VLAN labels, so as to carry out VLAN label assignment and take the extended LDP as a topology discovery protocol for an L2 virtual private network; setting the range of VLAN labels; implementing a VLL by constructing a VLAN switching path.

摘要翻译： 提供了一种用于实现虚拟专线（VLL）的方法。 该方法包括：基于VLAN QinQ技术配置虚拟局域网（VLAN）标签栈; 配置VLAN QinQ交换设备和多协议标签交换设备进行通信; 扩展标签分发协议（LDP）以支持VLAN标签的封装，从而进行VLAN标签分配，并将扩展LDP作为L2虚拟专网的拓扑发现协议; 设置VLAN标签的范围; 通过构建VLAN交换路径实现VLL。

公开(公告)号：US20070115913A1

公开(公告)日：2007-05-24

申请号：US10587538

申请日：2005-01-28

申请人： Bin Li ,  Defeng Li

发明人： Bin Li ,  Defeng Li

IPC分类号： H04J3/24 ,  H04L12/56

CPC分类号： H04L12/4633 ,  H04L12/465 ,  H04L47/724 ,  H04L47/825

摘要： A method for implementing a virtual leased line (VLL) is provided. The method includes the steps of: configuring a virtual local area network (VLAN) label stack on the basis of VLAN QinQ technique; configuring a VLAN QinQ switching device and a multi-protocol label switching device to communicate with each other; extending a label distribution protocol (LOP) to support encapsulation of VLAN labels, so as to carry out VLAN label assignment and take the extended LOP as a topoloay discovery protocol for an L2 virtual private network; setting the range of VLAN labels; implementing a VLL by constructing a VLAN switching path.

摘要翻译： 提供了一种用于实现虚拟专线（VLL）的方法。 该方法包括：基于VLAN QinQ技术配置虚拟局域网（VLAN）标签栈; 配置VLAN QinQ交换设备和多协议标签交换设备进行通信; 扩展标签分发协议（LOP）以支持VLAN标签的封装，以便进行VLAN标签分配，并将扩展LOP作为L2虚拟专用网络的拓扑发现协议; 设置VLAN标签的范围; 通过构建VLAN交换路径实现VLL。