公开(公告)号：US20150200846A1

公开(公告)日：2015-07-16

申请号：US14155975

申请日：2014-01-15

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/721 ,  H04L12/751 ,  H04L12/715

CPC classification number: H04L45/70 ,  H04L45/26 ,  H04L45/46 ,  H04W40/12 ,  H04W40/24 ,  H04W40/30 ,  H04W40/32

Abstract: In one embodiment, a device communicates with one or more neighboring devices in a shared-media communication network using a default data rate. The device determines that the default data rate is not supported by a particular one of the neighboring devices. The particular neighboring device is then associated with a second data rate that has a lower data rate than the default data rate. The second data rate is then used to communicate with the particular neighboring device.

Abstract translation: 在一个实施例中，设备使用默认数据速率与共享媒体通信网络中的一个或多个相邻设备进行通信。 该设备确定缺省数据速率不被特定的相邻设备支持。 然后，特定的相邻设备与具有比默认数据速率更低的数据速率的第二数据速率相关联。 然后第二数据速率用于与特定的邻近设备通信。

公开(公告)号：US20150092560A1

公开(公告)日：2015-04-02

申请号：US14563472

申请日：2014-12-08

Applicant: Cisco Technology, Inc.

Inventor： Jonathan W. Hui ,  Wei Hong ,  Jeongyeup Paek ,  Philip Buonadonna

IPC: H04L12/801

CPC classification number: H04L47/12 ,  H04L41/0896 ,  H04L41/12 ,  H04L45/02 ,  H04L45/04 ,  H04L47/11

Abstract: In one embodiment, a device connected to a network receives at a network interface a first network size indicator for a first network and a second network size indicator for a second network. A difference between the first network size indicator and the second network size indicator is determined and a switching probability is calculated if the difference between the network size indicators is greater than a predetermined network size difference threshold. The device may then migrate from the first network to the second network based on the switching probability.

Abstract translation: 在一个实施例中，连接到网络的设备在网络接口处接收第一网络的第一网络大小指示符和用于第二网络的第二网络大小指示符。 确定第一网络大小指示符和第二网络大小指示符之间的差异，并且如果网络尺寸指示符之间的差大于预定的网络大小差异阈值，则计算切换概率。 然后，设备可以基于切换概率从第一网络迁移到第二网络。

公开(公告)号：US20150063365A1

公开(公告)日：2015-03-05

申请号：US14522580

申请日：2014-10-23

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/721 ,  H04B3/54

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。

公开(公告)号：US20150023369A1

公开(公告)日：2015-01-22

申请号：US13945874

申请日：2013-07-18

Applicant: Cisco Technology, Inc.

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

IPC: H04L29/06

CPC classification number: H04L69/24 ,  H04B1/713 ,  H04W72/0406 ,  H04W84/18 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/22 ,  Y02D70/40

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：US08891588B1

公开(公告)日：2014-11-18

申请号：US13960639

申请日：2013-08-06

Applicant: Cisco Technology, Inc.

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

IPC: H04B1/00 ,  H04L12/753

CPC classification number: H04L45/306 ,  H04B1/713 ,  H04J3/0658 ,  H04L45/22 ,  H04L45/48

Abstract: In a multiple interface, low power and lossy network comprising a plurality of nodes, a low transmission power and medium transmission power topology are defined for the network and a channel-hopping schedule is defined for the devices operating in each topology. A sender determines that data is capable of being transmitted via a link on the low transmission power topology. The sender determines the transmission parameters for the transmission of the data over the link on the low transmission power topology and determines a low transmission power channel for transmission of the data. The sender transmits the determined channel and the transmission parameters to the receiver. The sender transmits the data via the determined channel in the low transmission power topology.

Abstract translation: 在包括多个节点的多接口，低功率和有损网络中，针对网络定义了低发射功率和中等传输功率拓扑，并为每个拓扑中运行的设备定义了跳频调度。 发送方确定数据能够通过低传输功率拓扑上的链路传输。 发送方确定通过低传输功率拓扑上的链路传输数据的传输参数，并确定用于传输数据的低传输功率信道。 发送方将确定的信道和传输参数发送到接收机。 发送方通过低传输功率拓扑中的确定信道发送数据。

公开(公告)号：US20140330947A1

公开(公告)日：2014-11-06

申请号：US14333074

申请日：2014-07-16

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/24

CPC classification number: H04L41/0803 ,  H04L45/14 ,  H04L61/2015 ,  H04L61/6059

Abstract: In one embodiment, each of a plurality of devices in a computer network is configured to i) transmit a unicasted dynamic host configuration protocol (DHCP) solicit message to a neighbor device having a route to a border router as an assumed DHCP relay without regard to location of a DHCP server, and ii) operate as a DHCP relay to receive unicasted DHCP solicit messages and relay the solicit message to the border router of the network without regard to location of the DHCP server, and to relay a DHCP reply to a corresponding requestor device.

Abstract translation: 在一个实施例中，计算机网络中的多个设备中的每一个被配置为i）向具有到边界路由器的路由器的邻居设备传输单播动态主机配置协议（DHCP）请求消息作为假定的DHCP中继，而不考虑 DHCP服务器的位置，以及ii）作为DHCP中继来接收单播的DHCP请求消息，并将请求消息中继到网络的边界路由器，而不考虑DHCP服务器的位置，并将DHCP应答中继到相应的 请求者设备

公开(公告)号：US20140126610A1

公开(公告)日：2014-05-08

申请号：US13669243

申请日：2012-11-05

Applicant: CISCO TECHNOLOGY, INC.

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

IPC: H04B1/7156

CPC classification number: H04B1/7156 ,  H04W56/001

Abstract: In one embodiment, a device determines a need to resynchronize a broadcast and unicast frequency-hopping schedules on its network interface. In response to the need, the device may solicit the broadcast schedule from one or more neighbor devices having the synchronized broadcast schedule, and then establishes the unicast schedule for the network interface using communication during the synchronized broadcast schedule.

Abstract translation: 在一个实施例中，设备确定需要在其网络接口上重新同步广播和单播跳频计划。 响应于需要，设备可以从具有同步广播调度的一个或多个相邻设备征求广播调度，然后在同步的广播调度中使用通信建立网络接口的单播调度。

公开(公告)号：US20140105211A1

公开(公告)日：2014-04-17

申请号：US13652887

申请日：2012-10-16

Applicant: CISCO TECHNOLOGY, INC.

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

IPC: H04L12/56

CPC classification number: H04L45/02 ,  H04L45/20 ,  H04L45/72 ,  H04L45/74 ,  H04L2212/00

Abstract: In one embodiment, the techniques herein provide that a node may receive a packet from a neighboring node in a low power and lossy network (LLN). The node may then extract, from the packet, a link-layer source address from a link layer header and an internet protocol (IP) source address from an IP header. The node may then determine whether the neighboring node originated the packet and, based on that determination, the node may correlate the link-layer source address with the IP source address to provide neighbor discovery.

Abstract translation: 在一个实施例中，这里的技术提供节点可以在低功率和有损网络（LLN）中从相邻节点接收分组。 然后，节点可以从分组中提取来自IP报头的链路层报头和因特网协议（IP）源地址的链路层源地址。 节点然后可以确定相邻节点是否发起分组，并且基于该确定，节点可以将链路层源地址与IP源地址相关联，以提供邻居发现。

公开(公告)号：US20140092752A1

公开(公告)日：2014-04-03

申请号：US13631452

申请日：2012-09-28

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/26 ,  H04B1/713

CPC classification number: H04L12/18 ,  H04B1/713 ,  H04L12/1895 ,  H04L67/32 ,  H04W4/06

Abstract: In one embodiment, a node may discover the density of neighboring nodes in a frequency-hopping communication network. In response to identifying a power outage condition, the node may also dynamically determine an initial power outage notification (PON) transmission protocol based on the density of neighboring nodes. The node may then communicate a first PON to a plurality of neighboring nodes according to the initial PON transmission protocol.

Abstract translation: 在一个实施例中，节点可以在跳频通信网络中发现相邻节点的密度。 响应于识别停电状况，节点还可以基于相邻节点的密度动态地确定初始断电通知（PON）传输协议。 然后，节点可以根据初始PON传输协议将第一PON传送到多个相邻节点。

公开(公告)号：US20140064172A1

公开(公告)日：2014-03-06

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: H04W52/02 ,  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。