公开(公告)号：US08539100B2

公开(公告)日：2013-09-17

申请号：US12955658

申请日：2010-11-29

申请人： Ya Liu ,  Xiaohu Xu

发明人： Ya Liu ,  Xiaohu Xu

IPC分类号： G06F15/173

CPC分类号： H04L45/04 ,  H04L45/00 ,  H04L45/02 ,  H04L45/46 ,  H04L63/0823 ,  H04L63/126

摘要： The present invention discloses a method, a device, and a communications system for managing and querying mapping information. The method for managing mapping information includes: signing a mapping information pair by using a private key of a certificate corresponding to a prefix in the mapping information pair to generate a signed mapping pair; submitting the signed mapping pair to a registration agent (RA) in a transit network; and sharing, by the RA, the signed mapping pair with other RAs through data synchronization. With the mapping information management method, data transmission method, devices and communications system provided by the present invention, the security of mapping information in registration, query, and synchronization operations is guaranteed.

摘要翻译： 本发明公开了一种用于管理和查询映射信息的方法，设备和通信系统。 用于管理映射信息的方法包括：通过使用与映射信息对中的前缀相对应的证书的私钥对映射信息对进行签名，以生成签名映射对; 将签名的映射对提交到转接网络中的注册代理（RA）; 并通过数据同步与RA与其他RA共享签名的映射对。 利用本发明提供的映射信息管理方法，数据传输方法，设备和通信系统，保证了注册，查询和同步操作中映射信息的安全性。

公开(公告)号：US20110072157A1

公开(公告)日：2011-03-24

申请号：US12955658

申请日：2010-11-29

申请人： Ya Liu ,  Xiaohu Xu

发明人： Ya Liu ,  Xiaohu Xu

IPC分类号： G06F15/16

CPC分类号： H04L45/04 ,  H04L45/00 ,  H04L45/02 ,  H04L45/46 ,  H04L63/0823 ,  H04L63/126

摘要： The present invention discloses a method, a device, and a communications system for managing and querying mapping information. The method for managing mapping information includes: signing a mapping information pair by using a private key of a certificate corresponding to a prefix in the mapping information pair to generate a signed mapping pair; submitting the signed mapping pair to a registration agent (RA) in a transit network; and sharing, by the RA, the signed mapping pair with other RAs through data synchronization. With the mapping information management method, data transmission method, devices and communications system provided by the present invention, the security of mapping information in registration, query, and synchronization operations is guaranteed.

摘要翻译： 本发明公开了一种用于管理和查询映射信息的方法，设备和通信系统。 用于管理映射信息的方法包括：通过使用与映射信息对中的前缀相对应的证书的私钥对映射信息对进行签名，以生成签名映射对; 将签名的映射对提交到转接网络中的注册代理（RA）; 并通过数据同步与RA与其他RA共享签名的映射对。 利用本发明提供的映射信息管理方法，数据传输方法，设备和通信系统，保证了注册，查询和同步操作中映射信息的安全性。

公开(公告)号：US08787206B2

公开(公告)日：2014-07-22

申请号：US12425672

申请日：2009-04-17

申请人： Xiaohu Xu

发明人： Xiaohu Xu

IPC分类号： G06F15/177 ,  H04L12/24 ,  G06F15/173

CPC分类号： G06F15/17331 ,  H04L29/12066 ,  H04L41/12 ,  H04L61/1511

摘要： A multi-address space mobile network architecture is disclosed, in which edge networks (ENs) are connected to a core network (CN) through core edge routers (CERs). A distributed hash table (DHT) set in the CN is adapted to not only store or update a mapping relation between a CER ID and CER location information in the CN, but also receive registration information sent from a host through the CER, and store or update mapping relations between a host ID host identifier (HI) and the CER ID and between the HI and host location information. A method for registering host information includes the steps as follows. The host acquires routable host location information in an EN to which the host currently added and information of the CER in the EN. The host sends registration information to the CN through the CER in the EN. Further, a method for sending data is described. The network architecture and methods of the present invention may improve update and query efficiency of the registration information from the host.

摘要翻译： 公开了一种多地址空间移动网络架构，其中边缘网络（EN）通过核心边缘路由器（CER）连接到核心网络（CN）。 在CN中设置的分布式哈希表（DHT）适于不仅存储或更新CN中的CER ID和CER位置信息之间的映射关系，而且还接收通过CER发送的主机的注册信息，并存储或 更新主机ID主机标识符（HI）和CER ID之间以及HI与主机位置信息之间的映射关系。 用于登记主机信息的方法包括以下步骤。 主机在当前添加的主机和EN中的CER信息中获取可路由的主机位置信息。 主机通过EN中的CER向CN发送注册信息。 此外，描述了用于发送数据的方法。 本发明的网络架构和方法可以提高来自主机的注册信息的更新和查询效率。

公开(公告)号：US20120307841A1

公开(公告)日：2012-12-06

申请号：US13570894

申请日：2012-08-09

申请人： Dayong Guo ,  Xiaohu Xu

发明人： Dayong Guo ,  Xiaohu Xu

IPC分类号： H04L12/66

CPC分类号： H04L41/0853 ,  H04L61/1511 ,  H04L61/2015 ,  H04L61/251 ,  H04L61/2525 ,  H04L61/2592

摘要： The present invention discloses a method for obtaining IPv6 configuration information in an IPv6 transition network. The network includes an IPv4 network and an IPv6 network. An apparatus for providing IPv6 configuration information in the IPv4 network receives an IPv6 configuration information obtaining request packet sent by a user side device. In response, the apparatus sends a response packet to the user side device, where the response packet is a DHCPv4 packet, and carries the requested IPv6 configuration information. Some of the advantages of the present invention are that automatic configuration for a user side device which needs to traverse the IPv4 network to access the IPv6 network is implemented, and efficiency is greatly improved compared with a manual configuration method in the prior art.

摘要翻译： 本发明公开了一种在IPv6过渡网络中获取IPv6配置信息的方法。 该网络包括IPv4网络和IPv6网络。 在IPv4网络中提供IPv6配置信息的装置接收由用户侧设备发送的IPv6配置信息获取请求包。 作为响应，设备向用户侧设备发送响应分组，响应分组是DHCPv4分组，并携带所请求的IPv6配置信息。 本发明的一些优点是实现了需要遍历IPv4网络以访问IPv6网络的用户侧设备的自动配置，并且与现有技术中的手动配置方法相比，效率大大提高。

公开(公告)号：US08050264B2

公开(公告)日：2011-11-01

申请号：US11956387

申请日：2007-12-14

申请人： Xiaohu Xu

发明人： Xiaohu Xu

IPC分类号： H04L12/56

CPC分类号： H04L45/00 ,  H04L45/16 ,  H04L45/22

摘要： A method and system for re-routing a multicast stream is provided. The method for re-routing a multicast stream includes: providing a prior multicast forwarding path corresponding to a first route; establishing a new multicast forwarding path between a downstream router and a second upstream router corresponding to a second route; re-routing a multicast stream from said prior multicast forwarding path to said new multicast forwarding path, wherein said multicast stream utilizes said prior multicast forwarding path until said new multicast forwarding path is operational; and pruning said prior multicast forwarding path when said new multicast forwarding path is operational. Therefore, the multicast stream transmitting will not be interrupted during the switchover process of the multicast forwarding path caused by that a unicast route to a multicast source or a rendezvous point has changed.

摘要翻译： 提供了一种用于重新路由多播流的方法和系统。 重新路由组播流的方法包括：提供对应于第一路由的先前的组播转发路径; 在对应于第二路由的下游路由器和第二上游路由器之间建立新的多播转发路径; 将来自所述先前的多播转发路径的多播流重新路由到所述新的多播转发路径，其中所述多播流利用所述先前的多播转发路径，直到所述新的多播转发路径可操作为止; 并且当所述新的多播转发路径可操作时，修剪所述先前的组播转发路径。 因此，由组播源或会合点的单播路由发生变化的组播转发路径的切换过程中，组播流的发送不会中断。

公开(公告)号：US07876755B2

公开(公告)日：2011-01-25

申请号：US12212300

申请日：2008-09-17

申请人： Wei Cao ,  Xiaohu Xu

发明人： Wei Cao ,  Xiaohu Xu

IPC分类号： H04L12/28 ,  H04L12/56

CPC分类号： H04L45/16 ,  H04L45/02 ,  H04L45/023 ,  H04L45/28 ,  H04L45/50

摘要： A method and system for improving a quality of communication based on a label distribution protocol is provided. The method includes the following: When a local label switching router (LSR) finds out a change of a route at an upstream node in a multicast label switching path (LSP), it calculates and sets up a new optimized multicast LSP according to the label distribution protocol (LDP), and delays to send a withdraw request to the upstream node in the former multicast LSP. An interruption of the data stream in the multicast LSP reconstruction procedures can be avoided or reduced, so that the loss of data packets caused by the multicast LSP adjustment is reduced, and the quality of communication of the multicast is improved.

摘要翻译： 提供了一种基于标签分发协议提高通信质量的方法和系统。 该方法包括：当本地标签交换路由器（LSR）发现组播标签交换路径（LSP）上游节点的路由发生变化时，根据标签计算并建立新的优化组播LSP 分发协议（LDP），并将延迟发送到前一个组播LSP中的上游节点。 可以避免或减少组播LSP重建过程中的数据流的中断，从而降低由组播LSP调整引起的数据包丢失，提高组播通信质量。

公开(公告)号：US20100329153A1

公开(公告)日：2010-12-30

申请号：US12880948

申请日：2010-09-13

申请人： Xiaohu Xu

发明人： Xiaohu Xu

IPC分类号： H04L12/28 ,  H04L12/56

CPC分类号： H04L45/04 ,  H04L41/082 ,  H04L45/02 ,  H04L45/7457

摘要： A method and device for installing and distributing routes are disclosed. The routes are classified and installed respectively according to route types. Therefore, the distributed storage of a Forwarding Information Base (FIB) is automated, massive manual configuration work is avoided, and the problem of oversized FIB of the router as a result of fast growth of the routing table is solved.

摘要翻译： 公开了一种用于安装和分配路线的方法和装置。 路由根据路由类型分类安装。 因此，转发信息库（FIB）的分布式存储是自动化的，避免了大量的手工配置工作，解决了路由表快速增长导致路由器超大FIB的问题。

公开(公告)号：US20090238188A1

公开(公告)日：2009-09-24

申请号：US12476669

申请日：2009-06-02

申请人： Xiaohu Xu ,  Dayong Guo

发明人： Xiaohu Xu ,  Dayong Guo

IPC分类号： H04L12/56

CPC分类号： H04L45/04

摘要： An information forwarding method includes obtaining data information to be forwarded which carries a route indicator indicating a destination edge network, obtaining route information to a border router in the destination edge network according to the route indicator, and sending the data information to the border router in the destination edge network for forwarding. An information forwarding device is also provided.

摘要翻译： 一种信息转发方法，包括获取携带指示目的边缘网络的路由指示符的数据信息，根据该路由指示符向目的边缘网络中的边界路由器获取路由信息，并将数据信息发送到边界路由器 目的边缘网络进行转发。 还提供了一种信息转发设备。

公开(公告)号：US08149852B2

公开(公告)日：2012-04-03

申请号：US12470160

申请日：2009-05-21

申请人： Xiaohu Xu

发明人： Xiaohu Xu

IPC分类号： H04L12/28 ,  H04J1/16 ,  G08C15/00 ,  G06F11/00 ,  G01R31/08

CPC分类号： H04L45/04 ,  H04L45/18 ,  H04L45/22 ,  H04L45/28 ,  H04L45/50

摘要： A transmission method, system, and router based on a border gateway protocol (BGP) are provided. The method includes: notifying a standby route and a data packet ID corresponding to the standby route to a peer autonomous system (AS); receiving a data packet carrying a data packet ID from the peer AS; and forwarding the data packet via a standby route corresponding to the data packet ID carried in the data packet. The transmission performance based on the BGP can be improved by applying the present invention.

摘要翻译： 提供了基于边界网关协议（BGP）的传输方法，系统和路由器。 该方法包括：将备用路由和对应于备用路由的数据包ID通知给对等自主系统（AS）; 从对等体AS接收携带数据包ID的数据包; 并经由与数据包中携带的数据包ID相对应的备用路由转发数据包。 通过应用本发明可以提高基于BGP的传输性能。

公开(公告)号：US20110051738A1

公开(公告)日：2011-03-03

申请号：US12863103

申请日：2008-09-02

申请人： Xiaohu Xu

发明人： Xiaohu Xu

IPC分类号： H04L12/56

CPC分类号： H04L45/04 ,  H04L45/02 ,  H04L45/021 ,  H04L2212/00

摘要： A method, system, and device for maintaining routes are provided. A communications network includes multiple point of presence (PoP) groups, where each of the PoP groups includes one or more PoP nodes. PoP nodes within the same PoP group issue routing information of the same super prefix. PoP nodes within different PoP groups issue routing information of different super prefixes. The method further includes the following steps. A PoP node acquires routing information of a detailed prefix covered by a super prefix issued by the PoP node and synchronizes the routing information of the detailed prefix with other PoP nodes within the same PoP group. The method, system, and device reduce flow of data forwarded by each PoP node.

摘要翻译： 提供了一种用于维护路由的方法，系统和设备。 通信网络包括多个存在点（PoP）组，其中每个PoP组包括一个或多个PoP节点。 同一PoP组内的PoP节点发出同一超前缀的路由信息​​。 不同PoP组内的PoP节点发出不同超前缀的路由信息​​。 该方法还包括以下步骤。 PoP节点获取由PoP节点发布的超级前缀所覆盖的详细前缀的路由信息​​，并将详细前缀的路由信息​​与同一PoP组内的其他PoP节点同步。 方法，系统和设备减少每个PoP节点转发的数据流。