-
公开(公告)号：US20140016457A1
公开(公告)日：2014-01-16
申请号：US14007779
申请日：2012-02-15
IPC分类号： H04L12/703
摘要： A technique of operating a network node of a multicast communication network comprising a plurality of network nodes which are interconnected with each other by communication links is provided, wherein the network node is associate with a common source network node. A method implementation of the technique comprises: determining a first path which connects the network node to the common source network node along a primary network tree, and determining a second path which connects the network node to the common source network node along a secondary network tree, wherein the first path and the second path show redundancy with respect to each other; receiving, at the network node, multicast data from the common source network node via the first path; triggering, by the network node, reception of multicast data from the common source network node via the second path if the network node detects a failure of the first path (e.g., determines that no multicast data is received via the first path).
摘要翻译： 提供了一种操作包括通过通信链路彼此互连的多个网络节点的组播通信网络的网络节点的技术，其中所述网络节点与公共源网络节点相关联。 该技术的方法实现包括：确定沿着主网络树将网络节点连接到公共源网络节点的第一路径，以及确定沿着辅助网络树将网络节点连接到公共源网络节点的第二路径 ，其中所述第一路径和所述第二路径显示相对于彼此的冗余; 在所述网络节点处经由所述第一路径从所述公共源网络节点接收多播数据; 如果网络节点检测到第一路径的故障（例如，确定没有通过第一路径接收到多播数据），则通过网络节点触发从公共源网络节点经由第二路径接收多播数据。
-
22.发明申请公开(公告)号：US20130322231A1
公开(公告)日：2013-12-05
申请号：US13486472
申请日：2012-06-01
IPC分类号： H04L12/26
CPC分类号： H04L45/16
摘要： A failure detection mechanism provides enhancements to PIM-SM based fast re-route techniques. A network node upon detecting a loss of connection determines whether it can re-route multicast data traffic. If the network node does not have a failure-free secondary path, it can originate a notification packet and send it to the downstream parts of a multicast tree. The notification packet can trigger one or more downstream nodes to switch-over to redundant secondary paths to re-route the multicast data traffic.
摘要翻译： 故障检测机制提供了基于PIM-SM的快速重路由技术的增强功能。 检测到连接丢失时的网络节点确定是否可以重新路由组播数据业务。 如果网络节点没有无故障的次要路径，则可以发起通知包并将其发送到组播树的下游部分。 通知包可以触发一个或多个下游节点切换到冗余辅助路径，以重新路由组播数据流量。
-
公开(公告)号：US20130077476A1
公开(公告)日：2013-03-28
申请号：US13453876
申请日：2012-04-23
IPC分类号： G06F11/00
CPC分类号： H04L45/128 , H04L45/48
摘要： A method supports incremental deployment of maximally redundant trees-fast reroute (MRT-FRR) by supporting MRT-FRR within an island of nodes in the network. A destination node and next hop failure selected to calculate detour paths. The clean set of nodes is calculated. The clean set of nodes is expanded with extended island candidate nodes that are reachable by a border node within the island via shortest path first (SPF) to the destination node that does not pass through the failed next hop. The extended island candidate nodes that are reachable by the border node within the island via SPF are part of an extended island. An MRT is calculated for each extended island candidate node. A candidate node is selected from the clean set of nodes according to a configured optimization option to serve as the endpoint of detour path to a destination node.
摘要翻译： 一种方法通过在网络中的一个节点岛内支持MRT-FRR来支持最大限度地冗余的树快速重路由（MRT-FRR）的增量部署。 选择目的地节点和下一跳失败来计算迂回路径。 计算干净的节点集。 通过最短路径优先（SPF）到岛内的边界节点可达到的扩展岛候选节点扩展到不通过故障下一跳的目的地节点的干净的一组节点。 通过SPF可以通过岛内边界节点到达的扩展岛候选节点是扩展岛的一部分。 为每个扩展岛候选节点计算MRT。 根据配置的优化选项从干净的节点集中选择候选节点，以用作到目的地节点的迂回路径的端点。
-
公开(公告)号：US20110277009A1
公开(公告)日：2011-11-10
申请号：US13123412
申请日：2009-10-08
申请人： Ayodele Damola , András Császár , Ákos Kiss , Attila Köröse , Csaba Lukovszki , Balázs Székely
发明人： Ayodele Damola , András Császár , Ákos Kiss , Attila Köröse , Csaba Lukovszki , Balázs Székely
IPC分类号： H04N7/173
CPC分类号： H04N7/165 , H04N21/2402 , H04N21/632
摘要： The present invention relates to a method for controlling downloading of video segments or segmented video stream to a subscriber client unit, and a subscriber client unit adapted to perform said method. One object of the invention is to guarantee seamless playback and the optimal server load. Said object is by a method and a subscriber client unit that is controlled by a segment selector (SSA) and a server bandwidth control (SBC) algorithm.
摘要翻译： 本发明涉及一种用于控制视频段或分段视频流下载到用户客户单元的方法，以及适用于执行所述方法的订户客户单元。 本发明的一个目的是保证无缝播放和最佳的服务器负载。 所述目的是通过由段选择器（SSA）和服务器带宽控制（SBC）算法控制的方法和用户客户端单元。
-
25.发明申请LINK STATE ROUTING PROTOCOLS FOR DATABASE SYNCHRONIZATION IN GMPLS NETWORKS 审中-公开用于GMPLS网络中数据库同步的链路状态路由协议公开(公告)号：US20110022728A1
公开(公告)日：2011-01-27
申请号：US12507233
申请日：2009-07-22
申请人： András Kern , András Császár , Benoit C. Tremblay
发明人： András Kern , András Császár , Benoit C. Tremblay
CPC分类号： H04L45/42 , H04L45/02 , H04L45/026
摘要： The present invention relates to a method and apparatus for synchronizing local databases maintained control plane (CP) nodes in a GMPLS network. CP nodes that are not involved in path computation do not need to store the TE information contained in opaque link state advertisements (LSAs). These CP nodes only store that part of an opaque LS which is used during the flooding procedure to verify if the LS is new or updated. This verification is based on a few fields of the LSA that contain link state (LS) identifying information. A CP node that is not involved in path computation stores only the LS identifying information and discards the remainder after the LSA is relayed to it neighbor CP nodes.
摘要翻译： 本发明涉及用于在GMPLS网络中同步本地数据库维护的控制平面（CP）节点的方法和装置。 不涉及路径计算的CP节点不需要存储包含在不透明链路状态通告（LSA）中的TE信息。 这些CP节点仅存储在泛洪过程期间使用的不透明LS的部分，以验证LS是新的还是更新的。 此验证基于包含链路状态（LS）标识信息的LSA的几个字段。 不涉及路径计算的CP节点仅存储LS标识信息，并且在将LSA中继到其邻居CP节点之后丢弃余数。
-
26.发明授权Method and apparatus for influencing the selection of peer data sources in a P2P network 有权影响P2P网络中对等数据源选择的方法和装置公开(公告)号：US09130960B2
公开(公告)日：2015-09-08
申请号：US13132582
申请日：2008-12-02
CPC分类号： H04L67/104 , H04L67/1021 , H04L67/1023 , H04L67/2819 , H04L67/2828
摘要： Disclosed is a method of selecting a data source node from a plurality of data source nodes, the selected data source node being used to send data to a data requesting node over a packet data network. The method includes, at an intermediate node of the network, intercepting at least one message sent to or from the data requesting node, the message(s) relating to data source node suitability, determining a cost of communication between the data requesting node and each of the data source nodes to which the message(s) relate, and influencing data source node suitability information sent to the data requesting node to take account of the cost to enable the data requesting node to use the information to select a data source node.
摘要翻译： 公开了一种从多个数据源节点中选择数据源节点的方法，所选择的数据源节点用于通过分组数据网络向数据请求节点发送数据。 该方法包括在网络的中间节点拦截发送到数据请求节点或从数据请求节点发送的至少一个消息，与数据源节点适用性相关的消息，确定数据请求节点和每个数据请求节点之间的通信成本 和影响发送到数据请求节点的数据源节点适用性信息以考虑成本以使数据请求节点使用该信息来选择数据源节点的数据源节点。
-
27.发明授权公开(公告)号：US08913482B2
公开(公告)日：2014-12-16
申请号：US13486651
申请日：2012-06-01
IPC分类号： H04L12/56 , H04L12/707 , H04L12/761
摘要： An upstream activation mechanism provides enhancements to PIM-SM based fast re-route in a multicast communication network, where secondary paths provides redundancy to a multicast tree and are on standby to reduce bandwidth usage when there is no failure in the network. Upon receiving an indication of a loss of connection to the primary path of the multicast tree network, a network node that has a failure-free secondary path to a common source node of the multicast tree sends an activation packet upstream toward the common source node via the failure-free secondary path. The activation packet causes one or more upstream nodes to unblock their respective outgoing interfaces to thereby activate transmission of the multicast data traffic on the failure-free secondary path.
摘要翻译： 上游激活机制提供了对组播通信网络中基于PIM-SM的快速重路由的增强功能，其中辅助路径为组播树提供冗余，并且在不存在网络故障时待机以减少带宽使用。 在接收到与多播树网络的主路径的连接丢失的指示时，具有到多播树的公共源节点的无故障次要路径的网络节点经由 无故障次要路径。 激活分组使得一个或多个上游节点解除其各自的输出接口的阻塞，从而激活无故障次要路径上的多播数据业务的传输。
-
公开(公告)号：US08842522B2
公开(公告)日：2014-09-23
申请号：US13453876
申请日：2012-04-23
IPC分类号： H04L12/70 , H04L12/735 , H04L12/753
CPC分类号： H04L45/128 , H04L45/48
摘要： A method supports incremental deployment of maximally redundant trees-fast reroute (MRT-FRR) by supporting MRT-FRR within an island of nodes in the network. A destination node and next hop failure selected to calculate detour paths. The clean set of nodes is calculated. The clean set of nodes is expanded with extended island candidate nodes that are reachable by a border node within the island via shortest path first (SPF) to the destination node that does not pass through the failed next hop. The extended island candidate nodes that are reachable by the border node within the island via SPF are part of an extended island. An MRT is calculated for each extended island candidate node. A candidate node is selected from the clean set of nodes according to a configured optimization option to serve as the endpoint of detour path to a destination node.
摘要翻译： 一种方法通过在网络中的一个节点岛内支持MRT-FRR来支持最大限度地冗余的树快速重路由（MRT-FRR）的增量部署。 选择目的地节点和下一跳失败来计算迂回路径。 计算干净的节点集。 通过最短路径优先（SPF）到岛内的边界节点可达到的扩展岛候选节点扩展到不通过故障下一跳的目的地节点的干净的节点集。 通过SPF可以通过岛内边界节点到达的扩展岛候选节点是扩展岛的一部分。 为每个扩展岛候选节点计算MRT。 根据配置的优化选项从干净的节点集中选择候选节点，以用作到目的地节点的迂回路径的端点。
-
29.发明授权System and method of implementing lightweight not-via IP fast reroutes in a telecommunications network 有权在电信网络中实现轻量级不通过IP快速重新路由的系统和方法公开(公告)号：US08780696B2
公开(公告)日：2014-07-15
申请号：US13129694
申请日：2009-11-16
申请人： Gabor Enyedi , András Császár
发明人： Gabor Enyedi , András Császár
IPC分类号： H04L12/26
CPC分类号： H04L45/00 , H04L45/22 , H04L45/28 , H04L2212/00 , H04W40/02
摘要： A system, method, and node for implementing lightweight Not-via Internet Protocol fast reroutes of a packet in a telecommunications network between a first node and a destination node. The method determines a shortest path between the first node and the destination node and two redundant trees between the first node and the destination node. Each redundant tree provides an alternate path from the first node and the destination node. When a failure in a link between the first node and the destination node is detected, the packet is forwarded to the destination node via a first redundant tree, and if not available, via a second redundant tree. If the second redundant tree is not available, the packet is dropped. If no failure in the link between the first node and the destination node is detected, the packet is sent via the determined shortest path to the destination node.
摘要翻译： 一种用于在第一节点和目的地节点之间的电信网络中实现轻量级非通过因特网协议快速重新路由分组的系统，方法和节点。 该方法确定第一节点和目的节点之间的最短路径以及第一节点与目的节点之间的两个冗余树。 每个冗余树提供从第一个节点和目标节点的替代路径。 当检测到第一节点和目的地节点之间的链路故障时，分组经由第一冗余树被转发到目的地节点，并且如果不可用，经由第二冗余树被转发。 如果第二个冗余树不可用，则丢弃该数据包。 如果检测到第一节点和目的地节点之间的链路没有故障，则经由确定的最短路径将分组发送到目的地节点。
-
公开(公告)号：US08576845B2
公开(公告)日：2013-11-05
申请号：US13059515
申请日：2008-08-22
申请人： András Császár , Lars Westberg , Mats Näslund , Lars G. Magnusson
发明人： András Császár , Lars Westberg , Mats Näslund , Lars G. Magnusson
IPC分类号： H04L12/26
CPC分类号： H04L45/00 , H04L9/083 , H04L29/12066 , H04L29/12207 , H04L45/50 , H04L61/1511 , H04L61/20 , H04L63/08 , H04L63/14
摘要： Method and apparatus for controlling transmission of data packets in a packet-switched network. When a first end-host (A) sends an address query to a DNS system (300) for a second end-host, the DNS system responds by providing a sender key created from a destination key registered for the second end-host, if the first end-host is authorized to send packets to the second end-host. Thereby, the first end-host, if authorized, is able to get across data packets to the second end-host by attaching a sender tag (TAG) generated from the sender key, as ingress tag to each transmitted data packet. A router (302) in the network matches an ingress tag in a received packet with entries in a forwarding table and sends out the packet on an output port (X) according to a matching entry. Otherwise, the router discards the packet if no matching entry is found in the table.
摘要翻译： 用于控制分组交换网络中数据分组传输的方法和装置。 当第一终端主机（A）向第二终端主机的DNS系统（300）发送地址查询时，DNS系统通过提供从为第二终端主机注册的目的地密钥创建的发送者密钥进行响应，如果 第一个终端主机被授权将数据包发送到第二个终端主机。 因此，如果授权，第一终端主机能够通过将从发送方密钥生成的发送者标签（TAG）作为入口标签附加到每个发送的数据分组，来跨越数据分组到达第二终端主机。 网络中的路由器（302）将接收到的分组中的入口标签与转发表中的条目匹配，并根据匹配条目在输出端口（X）上发送分组。 否则，如果表中没有匹配的条目，路由器将丢弃该数据包。
-
-
-
-
-
-
-
-
-
搜索结果
42 条记录 (耗时 0.016 秒)
