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51. 发明授权

US08937886B2 Dynamic reroute scheduling in a directed acyclic graph (DAG) 有权
标题翻译：有向非循环图（DAG）中的动态重新路由调度
公开(公告)号：US08937886B2
公开(公告)日：2015-01-20
申请号：US12971474
申请日：2010-12-17
申请人： Shmuel Shaffer , Jean-Philippe Vasseur , Sandeep Jay Shetty
发明人： Shmuel Shaffer , Jean-Philippe Vasseur , Sandeep Jay Shetty
IPC分类号： H04L12/28 , H04L12/757
CPC分类号： H04L45/023
摘要： In one embodiment, a particular node joins a directed acyclic graph (DAG) in a computer network at a parent node, and determines its grade based on a topology of the DAG, the grade lower than the parent node and higher than any child nodes of the particular node. In response to detecting a trigger for a routing change in the DAG, the particular node delays the routing change based on the grade such that the delay is longer than a first associated delay of any of the child nodes and shorter than a second associated delay of the parent node. Upon expiration of the delay, the particular node may determine if the trigger for the routing change is still valid, and if valid, performs the routing change.
摘要翻译：在一个实施例中，特定节点在父节点处连接计算机网络中的有向非循环图（DAG），并且基于DAG的拓扑来确定其等级，等级低于父节点并且高于父节点的任何子节点特定节点。响应于检测到DAG中的路由改变的触发，特定节点基于等级来延迟路由改变，使得延迟长于任何子节点的第一相关延迟，并且短于第二相关延迟父节点。在延迟到期时，特定节点可以确定路由改变的触发是否仍然有效，并且如果有效，则执行路由改变。

52. 发明授权

US08891538B2 State synchronization of serial data link sessions connected across an IP network 有权
标题翻译：通过IP网络连接的串行数据链路会话的状态同步
公开(公告)号：US08891538B2
公开(公告)日：2014-11-18
申请号：US12911494
申请日：2010-10-25
申请人： Ravikumar S. Chandrasekaran , Jean-Philippe Vasseur , Shmuel Shaffer
发明人： Ravikumar S. Chandrasekaran , Jean-Philippe Vasseur , Shmuel Shaffer
IPC分类号： H04L12/28 , H04L12/24 , H04L12/26
CPC分类号： H04L41/0672 , H04L43/0811
摘要： In one embodiment, a router maintains a communication session between a local terminal unit and a remote terminal unit, the local terminal unit interconnected to the router over a local serial data link, and the remote terminal unit interconnected to the router over an Internet Protocol (IP) session via a remote router and a corresponding remote serial data link. The router may then monitor a state of the local serial data link, and communicates this state with the remote router over the IP session, as well as a remote state of the remote serial data link. The router may then correspondingly control the state of the local serial data link to match the remote state of the remote serial data link.
摘要翻译：在一个实施例中，路由器维护本地终端单元和远程终端单元之间的通信会话，本地终端单元通过本地串行数据链路与路由器互连，以及通过因特网协议互连到路由器的远程终端单元 IP）会话通过远程路由器和相应的远程串行数据链路。然后，路由器可以监视本地串行数据链路的状态，并通过IP会话与远程路由器通信该状态以及远程串行数据链路的远程状态。然后，路由器可以相应地控制本地串行数据链路的状态以匹配远程串行数据链路的远程状态。

53. 发明授权

US08787392B2 Dynamic routing metric adjustment 有权
标题翻译：动态路由度量调整
公开(公告)号：US08787392B2
公开(公告)日：2014-07-22
申请号：US12971094
申请日：2010-12-17
申请人： Jean-Philippe Vasseur , Shmuel Shaffer , Sandeep Jay Shetty
发明人： Jean-Philippe Vasseur , Shmuel Shaffer , Sandeep Jay Shetty
IPC分类号： H04L12/28 , H04L12/54 , H04W40/24
CPC分类号： H04L12/56 , H04L45/028 , H04W40/248
摘要： In one embodiment, one or more routing update parameters may be set for and propagated to nodes of a directed acyclic graph (DAG) in a computer network, the routing update parameters indicative of when to perform a corresponding routing update operation. A decision node (e.g., a root node of the DAG, application in a head-end, etc.) may gather network statistics of the DAG during operation based on the routing update parameters, and may accordingly determine at least one adjusted routing update parameter based on the gathered network statistics. This adjusted routing update parameter may then be propagated to the nodes of the DAG, such that the nodes operate according to the (adaptively) adjusted routing update parameter.
摘要翻译：在一个实施例中，可以为计算机网络中的有向无环图（DAG）的节点设置一个或多个路由更新参数并传播给路由更新参数，该路由更新参数指示何时执行相应的路由更新操作。决策节点（例如，DAG的根节点，头端的应用等）可以在操作期间基于路由更新参数来收集DAG的网络统计信息，并且因此可以确定至少一个经调整的路由更新参数基于收集的网络统计。然后可以将经调整的路由更新参数传播到DAG的节点，使得节点根据（自适应）调整的路由更新参数进行操作。

54. 发明授权

US08638667B2 Transmission priority paths in mesh networks 有权
标题翻译：网状网络中的传输优先级路径
公开(公告)号：US08638667B2
公开(公告)日：2014-01-28
申请号：US13176433
申请日：2011-07-05
申请人： Shmuel Shaffer , Jean-Philippe Vasseur , Sandeep J. Shetty
发明人： Shmuel Shaffer , Jean-Philippe Vasseur , Sandeep J. Shetty
IPC分类号： H04L12/28
CPC分类号： H04L47/2433 , H04L47/10 , H04L47/17 , H04L47/245 , H04L47/724 , H04L47/805 , H04L47/826
摘要： In one embodiment, a node may determine a trigger for establishing transmission priority on a path through a shared-media communication network for priority traffic to a particular node. As such, the node may generate a path clear message (PCM) that would instruct one or more receiving nodes along the path to suspend transmission for traffic other than the priority traffic for a specified duration, and also to transmit a local non-repeated distributed message to one or more neighbor nodes of each respective receiving node, the local non-repeated distributed message to instruct the neighbor nodes to suspend transmission for the specified duration. After transmitting the PCM along the path to the particular node to establish the transmission priority for the priority traffic along the path through the shared-media network, the priority traffic may be transmitted to the particular node along the path during the transmission priority.
摘要翻译：在一个实施例中，节点可以确定用于在通过共享媒体通信网络的路径上建立传输优先级的触发，以用于到特定节点的优先流量。因此，节点可以生成路径清除消息（PCM），其将指示沿着该路径的一个或多个接收节点在指定的持续时间内暂停除优先级业务之外的业务的传输，并且还发送本地非重复分布式消息到每个相应接收节点的一个或多个邻居节点，该本地非重复分布式消息指示相邻节点在指定持续时间内暂停传输。在沿着路径发送PCM到特定节点以建立沿着通过共享媒体网络的路径的优先业务的传输优先级的情况下，优先业务可以在传输优先级期间沿着路径发送到特定节点。

55. 发明授权

US08595359B2 Efficient message distribution for directed acyclic graphs 有权
标题翻译：有针对性的非循环图的高效消息分发
公开(公告)号：US08595359B2
公开(公告)日：2013-11-26
申请号：US13043168
申请日：2011-03-08
申请人： Shmuel Shaffer , Sandeep Jay Shetty , Jean-Philippe Vasseur
发明人： Shmuel Shaffer , Sandeep Jay Shetty , Jean-Philippe Vasseur
IPC分类号： G06F15/173
CPC分类号： H04W4/70 , H04L45/04 , H04L45/16 , H04W40/023 , H04W84/18
摘要： In one embodiment, a particular node in a primary DAG receives a distributed message from distributing nodes, and from this, deterministically selects a distributing node as a distributing parent in a secondary DAG from which distributed messages are to be received. The particular node may then inform the deterministically selected distributing parent that it is being used by the particular node as its distributing parent, and if the selected distributing parent is not the particular node's primary DAG parent, then the primary DAG parent is informed that it need not send distributed messages for the particular node. In another embodiment, a distributing node continues to repeat distributed messages in response to receiving notification that it is being used as a distributing parent, and if a primary DAG parent, prevents the repeating in response to receiving a notification from all of its child nodes that it need not send distributed messages.
摘要翻译：在一个实施例中，主DAG中的特定节点从分发节点接收分布式消息，并且从此确定性地将分发节点确定性地选择为要从其接收分布式消息的辅助DAG中的分发父节点。然后，特定节点可以将确定性地选择的分配的父节点通知该特定节点正在使用它作为其分发的父节点，并且如果选择的分配父节点不是特定节点的主DAG父节点，则主DAG父节点被通知它需要不发送特定节点的分布式消息。在另一个实施例中，分发节点响应于接收到它被用作分发父节点的通知继续重复分布式消息，并且如果主DAG父节点响应于从其所有子节点接收到通知，则防止重复它不需要发送分布式消息。

56. 发明授权

US08520676B2 System and method for managing acknowledgement messages in a very large computer network 有权
标题翻译：用于在非常大的计算机网络中管理确认消息的系统和方法
公开(公告)号：US08520676B2
公开(公告)日：2013-08-27
申请号：US12942985
申请日：2010-11-09
申请人： Shmuel Shaffer , Jean-Philippe Vasseur , Sandeep Shetty
发明人： Shmuel Shaffer , Jean-Philippe Vasseur , Sandeep Shetty
IPC分类号： H04L12/28
CPC分类号： H04L12/1868 , H04L1/1854 , H04L2001/0093
摘要： A multicast message may be distributed by receiving, at a first node in a multicast network, a multicast message from a parent node of the first node. The multicast message is transmitted to child nodes of the first node in the multicast network. A population of the child nodes to which the multicast message was transmitted is accessed and acknowledgement messages which reveal child nodes that are among an acknowledging subset of less than all of the child nodes of the first node are received. Child nodes revealed by the received acknowledgement messages are compared with child nodes determined to be among the population of child nodes to which the multicast message is expected to be received. Based on results of the comparison, a compressed non-acknowledging subset is identified and transmitted to the parent node.
摘要翻译：可以通过在多播网络中的第一节点处从第一节点的父节点接收多播消息来分发多播消息。组播消息被发送到组播网络中第一个节点的子节点。访问发送多播消息的子节点的群体，并且接收到揭示小于第一节点的所有子节点的确认子集之中的子节点的确认消息。将接收到的确认消息所揭示的子节点与确定为预期要接收多播消息的子节点的群体中的子节点进行比较。基于比较的结果，识别压缩的非确认子集并将其发送到父节点。

57. 发明申请

US20130010590A1 DYNAMIC ENABLING OF ROUTING DEVICES IN SHARED-MEDIA COMMUNICATION NETWORKS 有权
标题翻译：共享通信网络中路由器的动态启动
公开(公告)号：US20130010590A1
公开(公告)日：2013-01-10
申请号：US13176253
申请日：2011-07-05
申请人： Jean-Philippe Vasseur , Shmuel Shaffer
发明人： Jean-Philippe Vasseur , Shmuel Shaffer
IPC分类号： H04L12/26
CPC分类号： H04L45/46 , H04L45/26 , H04W40/32
摘要： In one embodiment, a non-repeated reachability probe is transmitted from a particular node into a shared-media network, where nodes that receive the probe are configured to reply to the particular node. Based on determining a set of one or more nodes in the shared-media network that received the probe, one or more routing nodes of the set may be selected to act as routers in the shared-media network, and notified of their selection.
摘要翻译：在一个实施例中，将不重复的可达性探测从特定节点发送到共享媒体网络，其中接收探测的节点被配置为回复特定节点。基于确定接收到探测的共享 - 媒体网络中的一个或多个节点的集合，可以选择该集合的一个或多个路由节点用作共享 - 媒体网络中的路由器，并通知其选择。

58. 发明申请

US20120233326A1 Efficient Message Distribution for Directed Acyclic Graphs 有权
标题翻译：定向非循环图的有效消息分布
公开(公告)号：US20120233326A1
公开(公告)日：2012-09-13
申请号：US13043168
申请日：2011-03-08
申请人： Shmuel Shaffer , Sandeep Jay Shetty , Jean-Philippe Vasseur
发明人： Shmuel Shaffer , Sandeep Jay Shetty , Jean-Philippe Vasseur
IPC分类号： G06F15/173
CPC分类号： H04W4/70 , H04L45/04 , H04L45/16 , H04W40/023 , H04W84/18
摘要： In one embodiment, a particular node in a primary DAG receives a distributed message from distributing nodes, and from this, deterministically selects a distributing node as a distributing parent in a secondary DAG from which distributed messages are to be received. The particular node may then inform the deterministically selected distributing parent that it is being used by the particular node as its distributing parent, and if the selected distributing parent is not the particular node's primary DAG parent, then the primary DAG parent is informed that it need not send distributed messages for the particular node. In another embodiment, a distributing node continues to repeat distributed messages in response to receiving notification that it is being used as a distributing parent, and if a primary DAG parent, prevents the repeating in response to receiving a notification from all of its child nodes that it need not send distributed messages.
摘要翻译：在一个实施例中，主DAG中的特定节点从分发节点接收分布式消息，并且从此确定性地将分发节点确定性地选择为要从其接收分布式消息的辅助DAG中的分发父节点。然后，特定节点可以将确定性地选择的分配的父节点通知该特定节点正在使用它作为其分发的父节点，并且如果选择的分配父节点不是特定节点的主DAG父节点，则主DAG父节点被通知它需要不发送特定节点的分布式消息。在另一个实施例中，分发节点响应于接收到它被用作分发父节点的通知继续重复分布式消息，并且如果主DAG父节点响应于从其所有子节点接收到通知，则防止重复它不需要发送分布式消息。

59. 发明申请

US20120155475A1 Dynamic Routing Metric Adjustment 有权
标题翻译：动态路由度量调整
公开(公告)号：US20120155475A1
公开(公告)日：2012-06-21
申请号：US12971094
申请日：2010-12-17
申请人： Jean-Philippe Vasseur , Shmuel Shaffer , Sandeep Jay Shetty
发明人： Jean-Philippe Vasseur , Shmuel Shaffer , Sandeep Jay Shetty
IPC分类号： H04L12/56
CPC分类号： H04L12/56 , H04L45/028 , H04W40/248
摘要： In one embodiment, one or more routing update parameters may be set for and propagated to nodes of a directed acyclic graph (DAG) in a computer network, the routing update parameters indicative of when to perform a corresponding routing update operation. A decision node (e.g., a root node of the DAG, application in a head-end, etc.) may gather network statistics of the DAG during operation based on the routing update parameters, and may accordingly determine at least one adjusted routing update parameter based on the gathered network statistics. This adjusted routing update parameter may then be propagated to the nodes of the DAG, such that the nodes operate according to the (adaptively) adjusted routing update parameter.
摘要翻译：在一个实施例中，可以为计算机网络中的有向无环图（DAG）的节点设置一个或多个路由更新参数并传播给路由更新参数，该路由更新参数指示何时执行相应的路由更新操作。决策节点（例如，DAG的根节点，头端的应用等）可以在操作期间基于路由更新参数来收集DAG的网络统计信息，并且因此可以确定至少一个经调整的路由更新参数基于收集的网络统计。然后可以将经调整的路由更新参数传播到DAG的节点，使得节点根据（自适应）调整的路由更新参数进行操作。

60. 发明申请

US20120155463A1 Increased Communication Opportunities with Low-Contact Nodes in a Computer Network 审中-公开
标题翻译：增加与计算机网络中低联系节点的沟通机会
公开(公告)号：US20120155463A1
公开(公告)日：2012-06-21
申请号：US12971360
申请日：2010-12-17
申请人： Jean-Philippe Vasseur , Shmuel Shaffer , Sandeep Jay Shetty
发明人： Jean-Philippe Vasseur , Shmuel Shaffer , Sandeep Jay Shetty
IPC分类号： H04L12/56
CPC分类号： H04L12/1863 , H04L12/185 , H04L67/145
摘要： In one embodiment, a particular node (e.g., root node) in a directed acyclic graph (DAG) in a computer network may identify a low-contact (e.g., wireless) node in the DAG that is at risk of having an invalid path when attempts are made to reach the low-contact node. In response, the particular node may identify neighbors of the low-contact node, and may establish a multicast tree from the particular node to the low-contact node through a plurality of the neighbors to reach the low-contact node. When sending traffic to the low-contact node, the particular node sends the traffic on the multicast tree, wherein each of the plurality of neighbors attempts to forward the traffic to the low-contact node. In another embodiment, the low-contact node itself indicates its status to the particular/root node, along with its list of neighbors in order to receive the multicast traffic.
摘要翻译：在一个实施例中，计算机网络中的有向非循环图（DAG）中的特定节点（例如，根节点）可以标识DAG中具有无效路径风险的低接触（例如，无线）节点，当尝试到达低接触节点。作为响应，特定节点可以识别低联系节点的邻居，并且可以通过多个邻居来建立从特定节点到低联系节点的多播树，以到达低接触节点。当向低联系节点发送流量时，特定节点在多播树上发送流量，其中多个邻居中的每一个尝试将流量转发到低联系节点。在另一个实施例中，低接触节点本身指示其对特定/根节点的状态及其邻居列表以便接收多播业务。

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