公开(公告)号：US09225589B2

公开(公告)日：2015-12-29

申请号：US13921748

申请日：2013-06-19

Applicant: Cisco Technology, Inc.

Inventor： Jonathan W. Hui ,  Wei Hong ,  Jean-Philippe Vasseur

IPC: H04L12/24 ,  H04B1/715 ,  H04W40/12

CPC classification number: H04L41/0654 ,  H04B1/715 ,  H04L45/22 ,  H04L45/28 ,  H04W40/12

Abstract: In one embodiment, a primary node in a shared-media communication network is selected by a node toward a destination. In response to determining the primary node, the node determines a frequency-hopping schedule of the primary node. One or more backup nodes for the primary nodes are then determined based on a frequency-hopping schedule diversity between the primary node and the one or more backup nodes.

Abstract translation: 在一个实施例中，共享媒体通信网络中的主节点被节点选择到目的地。 响应于确定主节点，节点确定主节点的跳频调度。 然后，基于主节点和一个或多个备份节点之间的跳频调度分集来确定主节点的一个或多个备份节点。

公开(公告)号：US20150365238A1

公开(公告)日：2015-12-17

申请号：US14303122

申请日：2014-06-12

Applicant: Cisco Technology, Inc.

Inventor： Jonathan W. Hui ,  Raja Rajaram Kannan ,  Wei Hong

IPC: H04L9/32

CPC classification number: H04L9/3247 ,  H04L9/321 ,  H04L9/3252 ,  H04L9/3263 ,  H04L9/3297 ,  Y04S40/24

Abstract: Presented herein are techniques for securely configuring or managing devices in a variety of geographic locations. At a device manager for a device, a first public key of a first public-private key pair is presented to a network management system as part of a request for one or more work orders. The work order, generated and signed by the network management system using a second private key of a second public-private key pair, includes the first public key, and is received by the device manager. The signed work order is provided to the endpoint device for validation of the signed work order using a second public key, and all subsequent communications from the device manager to the endpoint device are sent such that the communications are signed with the first private key. In some embodiments, each work order is valid for a specified amount of time.

Abstract translation: 这里提出了用于在各种地理位置中安全地配置或管理设备的技术。 在设备的设备管理器中，作为对一个或多个工作单的请求的一部分，第一公钥 - 私钥对的第一公钥被呈现给网络管理系统。 由网络管理系统使用第二公钥 - 私钥对的第二私钥生成和签名的工单包括第一公钥，并由设备管理器接收。 所签署的工单被提供给端点设备，以使用第二公钥验证签署的工单，并且发送从设备管理器到端点设备的所有后续通信，使得通信与第一私钥签名。 在一些实施例中，每个工单在指定的时间量内是有效的。

公开(公告)号：US20150327260A1

公开(公告)日：2015-11-12

申请号：US14270972

申请日：2014-05-06

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Jonathan W. Hui ,  Wei Hong ,  Jean-Philippe Vasseur

IPC: H04W72/04 ,  H04B1/7143 ,  H04L1/00

CPC classification number: H04W72/0446 ,  H04B1/7143 ,  H04L1/0002 ,  H04L1/0017 ,  H04L1/04 ,  H04L47/14

Abstract: In one embodiment, a plurality of data rates available for communication is identified at a first device in a network. Slots of a channel hopping schedule are also identified and the data rates are assigned to the slots of the channel hopping schedule to generate a data rate hopping schedule. The generated data rate hopping schedule is further provided to a second device in the network.

Abstract translation: 在一个实施例中，在网络中的第一设备处识别可用于通信的多个数据速率。 还标识了信道跳频调度的时隙，并且将数据速率分配给信道跳频调度的时隙以生成数据速率跳频调度。 生成的数据速率跳频调度进一步提供给网络中的第二设备。

公开(公告)号：US20150318892A1

公开(公告)日：2015-11-05

申请号：US14267445

申请日：2014-05-01

Applicant: Cisco Technology, Inc.

Inventor： Jonathan W. Hui ,  Jean-Philippe Vasseur ,  Wei Hong

IPC: H04B3/32 ,  H04B3/54

CPC classification number: H04B3/32 ,  H04B3/487 ,  H04B3/54 ,  H04B2203/5425 ,  H04B2203/5466 ,  H04L45/123 ,  H04W40/16 ,  Y02D70/00 ,  Y02D70/144 ,  Y02D70/22 ,  Y02D70/34

Abstract: In one embodiment, a node in a network receives communication channel data regarding one or more communication channels available between a particular device in the network and a neighboring device. Each communication channel corresponds to one or more electrical phases over which the particular device can communicate with the neighboring device. The node also receives crosstalk data regarding an amount of crosstalk between the electrical phases over which the particular device can communicate with the neighboring device. The node then generates a routing path for the network based on the received crosstalk and communication channel data.

Abstract translation: 在一个实施例中，网络中的节点接收关于网络中的特定设备与相邻设备之间可用的一个或多个通信信道的通信信道数据。 每个通信信道对应于一个或多个电相位，特定设备可通过该相位与相邻设备进行通信。 节点还接收关于特定设备可以在其间与相邻设备通信的电相之间的串扰量的串扰数据。 然后，该节点基于接收的串扰和通信信道数据生成网络的路由路径。

公开(公告)号：US20150237130A1

公开(公告)日：2015-08-20

申请号：US14184820

申请日：2014-02-20

Applicant: Cisco Technology, Inc.

Inventor： Jonathan W. Hui ,  Wei Hong

IPC: H04L29/08 ,  G06F1/12 ,  H02J13/00

CPC classification number: H04L67/1095 ,  G06F1/12 ,  H02J3/14 ,  H02J3/40 ,  H02J13/0093 ,  H02J2003/143 ,  H04L67/12 ,  Y02B70/3225 ,  Y02B70/3266 ,  Y04S20/222 ,  Y04S20/242

Abstract: In one embodiment, an alternating circuit (AC) power connected node in a shared-media communication network (with knowledge of a current time) determines a time value of a particular zero-crossing event of the AC power, and sends a message to a neighbor node indicating the time value of the particular zero-crossing event to allow the neighbor node to synchronize its time by coordinating the time value to its detection of the particular zero-crossing event. In another embodiment, the neighboring node determines one or more local zero-crossing events of the AC power, such that upon receiving the message indicating a correct time value of the particular zero-crossing event, the neighboring node can synchronize its local time a current time by matching one of the one or more local zero-crossing events to the particular zero-crossing event and assigning the correct time value to the matched local zero-crossing event.

Abstract translation: 在一个实施例中，共享媒体通信网络中的交流电（AC）功率连接节点（具有当前时间的知识）确定AC功率的特定过零事件的时间值，并且向 邻居节点指示特定过零事件的时间值，以允许邻居节点通过协调时间值与其对特定过零事件的检测来同步其时间。 在另一个实施例中，相邻节点确定AC功率的一个或多个局部过零事件，使得在接收到指示特定过零事件的正确时间值的消息时，相邻节点可以使其本地时间同步电流 通过将一个或多个局部过零事件中的一个匹配到特定过零事件并将正确的时间值分配给匹配的局部过零事件来实现。

公开(公告)号：US20150207725A1

公开(公告)日：2015-07-23

申请号：US13920758

申请日：2013-06-18

Applicant: Cisco Technology, Inc.

Inventor： Jonathan W. Hui ,  Wei Hong ,  Jean-Philippe Vasseur

IPC: H04L12/761 ,  H04L12/18 ,  H04W72/00

CPC classification number: H04L65/4076 ,  H04L1/00 ,  H04L12/1863 ,  H04L12/189 ,  H04L45/16 ,  H04W28/06 ,  H04W72/005 ,  H04W72/02

Abstract: In one embodiment, a multicast communication is received at a particular node of a plurality of nodes receiving the multicast communication in a network. The particular node selects a subset of subcarriers using a probabilistic data structure, such that each of the plurality of nodes selects a respective subset of subcarriers using the probabilistic data structure. The particular node transmits an acknowledgement of receipt of the multicast communication on the subset of subcarriers selected by the particular node. The transmission occurs simultaneously with transmissions of acknowledgements from the other of the plurality of nodes.

Abstract translation: 在一个实施例中，在网络中接收多播通信的多个节点的特定节点处接收多播通信。 特定节点使用概率数据结构选择子载波子集，使得多个节点中的每一个节点使用概率数据结构来选择子载波的相应子集。 特定节点在由特定节点选择的子载波子集上发送接收到多播通信的确认。 传输与来自多个节点中的另一个的确认的发送同时发生。

公开(公告)号：US20150200714A1

公开(公告)日：2015-07-16

申请号：US14155902

申请日：2014-01-15

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Jonathan W. Hui ,  Wei Hong ,  Jean-Philippe Vasseur

IPC: H04B3/54

CPC classification number: H04B3/544

Abstract: In one embodiment, a device receives connected phase data from a neighboring device indicative of one or more electrical phases to which the neighboring device is connected. A determination is made, based on the connected phase data for the neighboring device, whether to transmit the message to the neighboring device over a single electrical phase at a higher output power or over a plurality of electrical phases at a lower output power. The message is then transmitted to the neighboring device over the determined one or more electrical phases.

Abstract translation: 在一个实施例中，设备从相邻设备接收指示相邻设备所连接的一个或多个电相的连接的相位数据。 基于相邻设备的连接的相位数据，确定是以较高的输出功率还是通过多个电相位以较低的输出功率将消息发送到相邻设备的单个电相位。 然后，通过确定的一个或多个电相位将该消息发送到相邻设备。

公开(公告)号：US08964762B2

公开(公告)日：2015-02-24

申请号：US14067274

申请日：2013-11-20

Applicant: Cisco Technology, Inc.

Inventor： Jonathan W. Hui ,  Lik Chuen Alec Woo ,  Wei Hong

IPC: H04L12/28 ,  H04B1/00 ,  H04W52/02 ,  H04B1/7156 ,  H04W56/00

CPC classification number: H04W52/0209 ,  H04B1/7156 ,  H04W56/00

Abstract: In one embodiment, a battery-operated communication device “quick-samples” a frequency hopping sequence at a periodic rate corresponding to a substantially low duty cycle, and is discovered by (e.g., attached to) a main-powered communication device. During a scheduled sample, the main-powered communication device transmits a control packet to be received by the battery-operated communication device, the control packet containing timing information and transmitted to account for worst-case clock drift error between the two devices. The battery-operated communication device responds to the control packet with a link-layer acknowledgment containing timing information from the battery-operated communication device. Accordingly, the two devices may re-synchronize their timing based on the timing information in the control packet and acknowledgment, respectively.

Abstract translation: 在一个实施例中，电池供电的通信设备以对应于基本上较低占空比的周期性速率“跳频”跳频序列，并且通过（例如附接到）主供电通信设备来发现。 在预定采样期间，主供电通信设备发送由电池供电的通信设备接收的控制分组，该控制分组包含定时信息，并且被传送以考虑两个设备之间的最坏情况时钟漂移误差。 电池供电的通信设备用包含来自电池供电通信设备的定时信息的链路层确认来响应控制分组。 因此，两个设备可以分别基于控制分组和确认中的定时信息重新同步其定时。

公开(公告)号：US20150023363A1

公开(公告)日：2015-01-22

申请号：US13945687

申请日：2013-07-18

Applicant: Cisco Technology, Inc.

Inventor： Jonathan W. Hui ,  Wei Hong ,  Jean-Philippe Vasseur

IPC: H04L12/707

CPC classification number: H04W76/40 ,  H04L45/14 ,  H04L45/16 ,  H04L45/22 ,  H04L45/48 ,  H04W28/18 ,  H04W40/14 ,  H04W40/246 ,  H04W84/18 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/22 ,  Y02D70/34

Abstract: In a multi-PHY, low power and lossy network comprising a plurality of nodes, a sender determines that a dwell time threshold limit for transmission of data will be exceeded by transmission of the data over a first network interface or that the recipient is unknown. The sender determines transmission parameters for the transmission of the data over the first network interface and transmits the transmission parameters to a receiver device over a second network interface that is different than the first network interface. The sender determines a channel on the first network interface for transmission of the data and transmits the determined channel with the transmission parameters to the receiver, or the receiver determines the channel on the first network interface for transmission of the data and transmits an indication of the determined channel to the sender in response to receiving the transmission parameters.

Abstract translation: 在包含多个节点的多PHY，低功率和有损网络中，发送方确定通过在第一网络接口上传输数据或者接收方未知的方式来超过数据传输的驻留时间阈值限制。 发送方确定通过第一网络接口传输数据的传输参数，并通过不同于第一网络接口的第二网络接口将传输参数发送到接收机设备。 发送方确定第一网络接口上的信道用于传输数据，并将具有传输参数的所确定的信道发送给接收机，或者接收机确定第一网络接口上的信道以传输数据，并发送 响应于接收到传输参数而将确定的信道发送给发送方。

公开(公告)号：US08879613B1

公开(公告)日：2014-11-04

申请号：US13960622

申请日：2013-08-06

Applicant: Cisco Technology, Inc.

Inventor： Jonathan W. Hui ,  Wei Hong ,  Jean-Philippe Vasseur

IPC: H04B3/46 ,  H04B17/00 ,  H04Q1/20 ,  H04B3/54 ,  H04L12/721

CPC classification number: H04B3/54 ,  H04L45/02 ,  H04L47/365 ,  H04L47/628

Abstract: In a multiple interface, low power and lossy network comprising a plurality of nodes, a sender node dynamically selects a data packet for setting a transmission parameter request in response to determining that an age value for a set of transmission parameters associated with a recipient device has expired or is expiring. The sender node selects an desired data packet for sending a transmission parameter request and transmits the selected data packet to the recipient device. The sender node receives a transmission parameter response from the recipient node comprising updated transmission parameters for that recipient node and then updates the current transmission parameters associated with the recipient node accordingly.

Abstract translation: 在包括多个节点的多接口，低功率和有损网络中，发送器节点动态地选择用于设置传输参数请求的数据分组，以响应于确定与接收方设备相关联的一组传输参数的年龄值具有 过期或正在过期。 发送方节点选择用于发送传输参数请求的期望数据分组，并将所选择的数据分组发送给接收方设备。 发送方节点从接收方节点接收包含该接收方节点的更新传输参数的传输参数响应，然后相应地更新与接收方节点相关联的当前传输参数。