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71. 发明申请

US20130067063A1 DYNAMIC KEEPALIVE PARAMETERS FOR REVERSE PATH VALIDATION IN COMPUTER NETWORKS 有权
标题翻译：用于计算机网络中反向路径验证的动态保持参数
公开(公告)号：US20130067063A1
公开(公告)日：2013-03-14
申请号：US13230373
申请日：2011-09-12
申请人： Jean-Philippe Vasseur , Jonathan W. Hui
发明人： Jean-Philippe Vasseur , Jonathan W. Hui
IPC分类号： G06F15/16
CPC分类号： H04L45/026 , H04L45/16 , H04L45/22 , H04L45/28 , H04L45/36 , H04L45/70
摘要： In one embodiment, a network device determines a path from itself to a source device in a computer network, where the source device utilizes the path in reverse to reach the network device. Based on determining a reliability of the path in reverse, the network device may dynamically adjust one or more keepalive parameters for keepalive messages sent on the path. Accordingly, the network device may then send keepalive messages on the path based on the dynamically adjusted keepalive parameters.
摘要翻译：在一个实施例中，网络设备确定在计算机网络中自身到源设备的路径，其中源设备利用相反的路径到达网络设备。基于反向确定路径的可靠性，网络设备可以动态调整在路径上发送的保持活动消息的一个或多个保持活动参数。因此，网络设备然后可以基于动态调整的保持活动参数在路径上发送保持活动消息。

72. 发明申请

US20130064072A1 PROACTIVE SOURCE-BASED REVERSE PATH VALIDATION IN COMPUTER NETWORKS 有权
标题翻译：计算机网络中基于源的反向路径验证
公开(公告)号：US20130064072A1
公开(公告)日：2013-03-14
申请号：US13230154
申请日：2011-09-12
申请人： Jean-Philippe Vasseur , Jonathan W. Hui
发明人： Jean-Philippe Vasseur , Jonathan W. Hui
IPC分类号： H04L12/26
CPC分类号： H04L67/145 , H04L41/12 , H04L43/10 , H04L45/026 , H04L45/22 , H04L45/28 , H04L45/34 , H04L45/36
摘要： In one embodiment, a network device may receive an indication of a particular future message time, and determines a path validation time that is prior to the particular future message time by an amount at least long enough to detect and report a route change of a path from the network device to a source of the particular future message, wherein the source utilizes the path in reverse to reach the network device for the particular future message. Accordingly, the network device sends, at the path validation time, a keepalive message on the path, where in response to a failure of the keepalive message on the path, the network device repairs the path to the source with a particular route change, and reports the particular route change to the source, e.g., such that in response, the source may transmit the particular future message on the changed path in reverse.
摘要翻译：在一个实施例中，网络设备可以接收特定未来消息时间的指示，并且确定在特定未来消息时间之前的路径验证时间至少足够长的时间量以检测和报告路径的路由改变从网络设备到特定的未来消息的源，其中源使用相反的路径到达用于特定将来消息的网络设备。因此，网络设备在路径验证时间发送路径上的keepalive消息，响应于该路径上的keepalive消息的故障，网络设备以特定路由更改修复到源的路径，以及报告到源的特定路由更改，例如，作为响应，源可以相反地在改变的路径上发送特定的将来消息。

73. 发明申请

US20130028104A1 ESTIMATED TRANSMISSION OVERHEAD (ETO) METRICS FOR VARIABLE DATA RATE COMMUNICATION LINKS 有权
标题翻译：用于可变数据速率通信链路的估计传输（ETO）量度
公开(公告)号：US20130028104A1
公开(公告)日：2013-01-31
申请号：US13191617
申请日：2011-07-27
申请人： Jonathan W. Hui , Jean-Philippe Vasseur
发明人： Jonathan W. Hui , Jean-Philippe Vasseur
IPC分类号： H04L12/26
CPC分类号： H04L47/25 , H04L45/123 , H04L45/48 , H04L47/34 , H04W4/38 , H04W84/18
摘要： In one embodiment, an expected transmission count (ETX) link metric is computed for a link between a transmitter and a receiver in a communication network, the ETX representative of an expected number of transmissions necessary for a message to be successfully received by the receiver over the link, and a data rate of the link at which the ETX is computed is also determined. From these, an estimated transmission overhead (ETO) link metric for the link may be computed by dividing the ETX by the data rate. In one embodiment, the data rate of the link may be adjusted based on the ETO (e.g., to minimize the ETO). In another embodiment, routes through the communication network may be selected based on ETO values along the route.
摘要翻译：在一个实施例中，为通信网络中的发射机和接收机之间的链路计算出期望的传输计数（ETX）链路量度，ETX表示接收机成功接收消息所需的预期传输次数链路以及计算ETX的链路的数据速率也被确定。由此可以通过将ETX除以数据速率来计算链路的估计传输开销（ETO）链路度量。在一个实施例中，可以基于ETO来调整链路的数据速率（例如，以最小化ETO）。在另一个实施例中，可以基于沿路由的ETO值来选择通过通信网络的路由。

74. 发明申请

US20130022083A1 SUB-SLOTTING TO IMPROVE PACKET SUCCESS RATE IN CARRIER SENSE MULTIPLE ACCESS NETWORKS 有权
标题翻译：子卡槽以提高载体感应多路访问网络中的分组成功率
公开(公告)号：US20130022083A1
公开(公告)日：2013-01-24
申请号：US13187075
申请日：2011-07-20
申请人： Jean-Philippe Vasseur , Jonathan W. Hui
发明人： Jean-Philippe Vasseur , Jonathan W. Hui
IPC分类号： H04B1/713
CPC分类号： H04W74/0808 , H04B1/713 , H04L12/4035 , H04L12/413 , H04W48/16 , H04W74/02
摘要： In one embodiment, a communication device in a frequency hopping communication network determines an intention to forward a first packet in a particular timeslot of a frequency hopping sequence. As such, the device scans in receive mode for an initial portion of the particular timeslot on a particular frequency known to neighbors of the communication device for reaching the communication device. In response to determining that the communication device is receiving a second packet during the initial portion, the device remains in receive mode to receive a remainder of the second packet. Conversely, in response to not receiving the second packet during the initial portion, the device proceeds to transmit the first packet during a remainder of the particular timeslot.
摘要翻译：在一个实施例中，跳频通信网络中的通信设备确定在跳频序列的特定时隙中转发第一分组的意图。这样，设备以接收通信设备的邻居已知的特定频率的特定时隙的初始部分以接收模式扫描以到达通信设备。响应于在初始部分期间确定通信设备正在接收第二分组，设备保持接收模式以接收第二分组的剩余部分。相反，响应于在初始部分期间没有接收到第二分组，设备继续在特定时隙的剩余时间期间发送第一分组。

75. 发明申请

US20130010615A1 RAPID NETWORK FORMATION FOR LOW-POWER AND LOSSY NETWORKS 有权
标题翻译：用于低功耗和低成本网络的快速网络形成
公开(公告)号：US20130010615A1
公开(公告)日：2013-01-10
申请号：US13176275
申请日：2011-07-05
申请人： Jonathan W. Hui , Jean-Philippe Vasseur
发明人： Jonathan W. Hui , Jean-Philippe Vasseur
IPC分类号： H04L12/26 , H04L12/28
CPC分类号： H04L41/0806 , H04L41/0823 , H04L61/2015 , H04L61/2092
摘要： In one embodiment, a node joins a communication network, and in response to joining the network, operates in a rapid startup mode, wherein the node in rapid startup mode establishes network configurations rapidly by deemphasizing quality (optimality) of the network configurations. Subsequent to operating in the rapid startup mode (e.g., after some timer or explicit command), the node then operates in a robust mode, wherein the node in robust mode iteratively refines the network configurations to increase the quality of the network configurations.
摘要翻译：在一个实施例中，节点加入通信网络，响应于加入网络，以快速启动模式运行，其中快速启动模式中的节点通过强调网络配置的质量（最佳）来快速建立网络配置。在快速启动模式（例如，在一些定时器或显式命令之后）操作之后，该节点然后以鲁棒模式操作，其中鲁棒模式下的节点迭代地优化网络配置以提高网络配置的质量。

76. 发明申请

US20120213124A1 METHOD AND APPARATUS TO TRIGGER DAG REOPTIMIZATION IN A SENSOR NETWORK 有权
标题翻译：在传感器网络中触发DAG选择的方法和装置
公开(公告)号：US20120213124A1
公开(公告)日：2012-08-23
申请号：US13044299
申请日：2011-03-09
申请人： Jean-Philippe Vasseur , Navneet Agarwal , Jonathan W. Hui
发明人： Jean-Philippe Vasseur , Navneet Agarwal , Jonathan W. Hui
IPC分类号： H04L12/28
CPC分类号： H04L45/02 , H04L41/12 , H04L45/26 , H04L45/48 , H04W4/70 , H04W40/24
摘要： In one embodiment, a probing technique allows a root node to determine whether to trigger reoptimization of a computer network represented by a directed acyclic graph (DAG) without injecting unnecessary traffic into the network. The root node may store and maintain information indicative of an ideal shape or topology of the DAG. During a normal DAG maintenance operation, the root node may transmit a DAG discovery request (probe request) that is configured to probe each node within the DAG for information used to determine a current topology of the DAG. In response, each node may record the information, e.g., routing and non-routing metrics, in a DAG discovery reply (probe reply) that is propagated to the root node. Upon receiving one or more replies, the root node may analyze the metrics to determine whether the current topology of the DAG deviates from the ideal DAG topology. The root node may thus determine DAG topology deviation upon probing at minimal cost. A number of algorithms may then be used to determine whether reoptimization, i.e., global repair, of the DAG is is required and, if so, the root node may dynamically trigger the global repair.
摘要翻译：在一个实施例中，探测技术允许根节点确定是否触发由有向无环图（DAG）表示的计算机网络的重新优化，而不会将不必要的业务注入到网络中。根节点可以存储和维护指示DAG的理想形状或拓扑的信息。在正常的DAG维护操作期间，根节点可以发送被配置为探测DAG内的每个节点的DAG发现请求（探测请求），用于确定DAG的当前拓扑结构的信息。作为响应，每个节点可以在传播到根节点的DAG发现回复（探针回复）中记录信息，例如路由和非路由度量。在接收到一个或多个答复之后，根节点可以分析度量以确定DAG的当前拓扑是否偏离理想的DAG拓扑。因此，根节点可以以最小的成本在探测时确定DAG拓扑偏差。然后可以使用许多算法来确定是否需要重新优化，即全局修复，如果是，则根节点可以动态地触发全局修复。

77. 发明授权

US09218216B2 Centrally driven performance analysis of low power and Lossy Networks 有权
标题翻译：低功耗和有损网络的集中驱动性能分析
公开(公告)号：US09218216B2
公开(公告)日：2015-12-22
申请号：US13188942
申请日：2011-07-22
申请人： Jean-Philippe Vasseur , Jonathan W. Hui , Gilman Tolle
发明人： Jean-Philippe Vasseur , Jonathan W. Hui , Gilman Tolle
IPC分类号： G06F15/173 , G06F9/50 , H04L12/24 , H04L12/26 , H04W84/18
CPC分类号： G06F9/5061 , H04L41/12 , H04L41/142 , H04L43/06 , H04L43/08 , H04W84/18
摘要： In one embodiment, a centralized device for a computer network divides the computer network into one or more regions for which performance is to be measured, and selects one or more nodes within each respective region of the one or more regions. The centralized device may then send a performance measurement request (PMR) to the selected node(s) for each region, and receives measured performance reports from the selected node(s) for each region in response to the PMR. Accordingly, based on the measured performance reports, the centralized device may then adjust at least one of either the divided regions or the selected node(s) for one or more of the one or more regions, e.g., for future PMRs.
摘要翻译：在一个实施例中，用于计算机网络的集中式设备将计算机网络划分成要测量性能的一个或多个区域，并且选择一个或多个区域的每个相应区域内的一个或多个节点。然后，集中式设备可以针对每个区域向所选择的节点发送性能测量请求（PMR），并且响应于PMR从每个区域接收来自所选节点的测量的性能报告。因此，基于所测量的性能报告，集中式设备然后可以调整一个或多个区域中的一个或多个的分割区域或所选择的节点中的至少一个，例如用于将来的PMR。

78. 发明授权

US09166845B2 Optimizing throughput of data frames in orthogonal frequency division multiplexing (OFDM) communication networks 有权
标题翻译：在正交频分复用（OFDM）通信网络中优化数据帧的吞吐量
公开(公告)号：US09166845B2
公开(公告)日：2015-10-20
申请号：US13538442
申请日：2012-06-29
申请人： Jonathan W. Hui , Jean-Philippe Vasseur , Wei Hong
发明人： Jonathan W. Hui , Jean-Philippe Vasseur , Wei Hong
IPC分类号： H04L29/04 , H04L27/00 , H04B3/54 , H04L5/00 , H04J3/16 , H04W72/04
CPC分类号： H04L5/0064 , H04B3/54 , H04B2203/5416 , H04J11/00 , H04L5/0007 , H04L5/003 , H04L5/0032 , H04L5/0033 , H04L5/0037 , H04L5/0044 , H04L5/0094 , H04L27/0006 , H04L27/2601 , H04W72/0453
摘要： In one embodiment, a device maintains a predetermined number of high-priority subcarriers for use in communicating high-priority data frames and a predetermined number of low-priority subcarriers for use in communicating low-priority data frames. A data frame is received and a data frame priority is determined for the data frame. If the data frame is determined to be a low-priority data frame, a minimum number of subcarriers, from the low-priority subcarriers, required for communication of the data frame is determined and the data frame is communicated using the minimum number of subcarriers. If the data frame is determined to be a high-priority data frame, a maximum number of subcarriers available, including the high-priority subcarriers and the low-priority subcarriers, is determined and the data frame is communicated using the maximum number of subcarriers.
摘要翻译：在一个实施例中，设备维护预定数量的高优先级子载波，用于传送高优先级数据帧和预定数量的低优先级子载波，以用于传送低优先级数据帧。接收数据帧，并为数据帧确定数据帧优先级。如果数据帧被确定为低优先级数据帧，则确定从数据帧通信所需的低优先级子载波的最小子载波数目，并且使用最小数目的副载波来传送数据帧。如果数据帧被确定为高优先级数据帧，则确定包括高优先级子载波和低优先级子载波的最大子载波数目，并且使用最大数目的副载波来传送数据帧。

79. 发明授权

US09118539B2 Managing grey zones of unreachable nodes in computer networks 有权
标题翻译：管理计算机网络中不可达节点的灰色区域
公开(公告)号：US09118539B2
公开(公告)日：2015-08-25
申请号：US13561985
申请日：2012-07-30
申请人： Jean-Philippe Vasseur , Jonathan W. Hui
发明人： Jean-Philippe Vasseur , Jonathan W. Hui
IPC分类号： H04L12/751 , H04L12/707 , H04L12/703 , H04L12/721
CPC分类号： H04L45/025 , H04L45/14 , H04L45/22 , H04L45/28
摘要： In one embodiment, a node (e.g., a root-node) of a currently known directed acyclic graph (DAG) topology of a computer network can identify a sub-DAG of one or more nodes that are unreachable. The node can further determine a scope of the unreachable nodes of the sub-DAG and tunnel a redirected message to a reachable node of the DAG topology that is adjacent to at least one of the unreachable nodes of the sub-DAG. The redirected message may cause the reachable node to distribute the redirected message to one or more of the unreachable nodes of the sub-DAG based on the scope.
摘要翻译：在一个实施例中，计算机网络的当前已知的有向无环图（DAG）拓扑的节点（例如，根节点）可以标识不可达的一个或多个节点的子DAG。节点可以进一步确定子DAG的不可达节点的范围，并且将重定向消息隧道传送到与子DAG的至少一个不可达节点相邻的DAG拓扑的可到达节点。重定向消息可以使可达节点基于范围将重定向消息分发到子DAG的一个或多个不可达节点。

80. 发明授权

US09072100B2 Sub-slotting to improve packet success rate in carrier sense multiple access networks 有权
标题翻译：子时隙，以提高载波侦听多路接入网络中的分组成功率
公开(公告)号：US09072100B2
公开(公告)日：2015-06-30
申请号：US13187075
申请日：2011-07-20
申请人： Jean-Philippe Vasseur , Jonathan W. Hui
发明人： Jean-Philippe Vasseur , Jonathan W. Hui
IPC分类号： H04L12/403 , H04W74/08 , H04W74/02 , H04L12/413 , H04B1/713 , H04W48/16
CPC分类号： H04W74/0808 , H04B1/713 , H04L12/4035 , H04L12/413 , H04W48/16 , H04W74/02
摘要： In one embodiment, a communication device in a frequency hopping communication network determines an intention to forward a first packet in a particular timeslot of a frequency hopping sequence. As such, the device scans in receive mode for an initial portion of the particular timeslot on a particular frequency known to neighbors of the communication device for reaching the communication device. In response to determining that the communication device is receiving a second packet during the initial portion, the device remains in receive mode to receive a remainder of the second packet. Conversely, in response to not receiving the second packet during the initial portion, the device proceeds to transmit the first packet during a remainder of the particular timeslot.
摘要翻译：在一个实施例中，跳频通信网络中的通信设备确定在跳频序列的特定时隙中转发第一分组的意图。这样，设备以接收通信设备的邻居已知的特定频率的特定时隙的初始部分以接收模式扫描以到达通信设备。响应于在初始部分期间确定通信设备正在接收第二分组，设备保持接收模式以接收第二分组的剩余部分。相反，响应于在初始部分期间没有接收到第二分组，设备继续在特定时隙的剩余时间期间发送第一分组。

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