公开(公告)号：US09479963B2

公开(公告)日：2016-10-25

申请号：US14484755

申请日：2014-09-12

Applicant: Cisco Technology, Inc.

Inventor： Shmuel Shaffer ,  Sandeep J. Shetty ,  Jean-Philippe Vasseur

IPC: H04W28/04 ,  H04W74/08 ,  H04L12/741 ,  H04L12/841 ,  H04W84/18

CPC classification number: H04W28/044 ,  H04L45/74 ,  H04L47/286 ,  H04W28/04 ,  H04W74/085 ,  H04W84/18

Abstract: In one embodiment, a particular node in a wireless network may receive a wireless signal, and may determine whether the wireless signal is intended for itself. In response to determining that the wireless signal is intended for the particular node, the particular node may transmit a non-colliding wireless carrier sense detected alert (CSDA) signal during the received wireless signal to request that other nodes within communication distance of the particular node refrain from transmitting for a duration of the received wireless signal. In another embodiment, a node listens on a first frequency for a wireless CSDA signal regarding a second (colliding) frequency, and in response to receiving a CSDA signal, may refrain from transmitting a wireless signal on the second frequency for the particular duration, or else (if not receiving a CSDA signal), may allow transmission of a wireless signal on the second frequency, accordingly.

Abstract translation: 在一个实施例中，无线网络中的特定节点可以接收无线信号，并且可以确定无线信号是否针对其自身。 响应于确定无线信号是针对特定节点，特定节点可以在所接收的无线信号期间发送非冲突无线载波侦听警报（CSDA）信号，以请求特定节点的通信距离内的其他节点 避免在接收的无线信号的持续时间内发送。 在另一个实施例中，节点在第一频率上侦听关于第二（冲突）频率的无线CSDA信号，并且响应于接收到CSDA信号可以避免在特定持续时间内在第二频率上发送无线信号，或 否则（如果没有接收到CSDA信号），则可以允许相应地在第二频率上发送无线信号。

公开(公告)号：US09276845B2

公开(公告)日：2016-03-01

申请号：US14099251

申请日：2013-12-06

Applicant: Cisco Technology, Inc.

Inventor： Shmuel Shaffer ,  Jonathan W. Hui ,  Jean-Philippe Vasseur

IPC: H04L12/28 ,  H04L12/721 ,  H04L12/707 ,  H04L12/761 ,  H04L12/725 ,  H04L12/18 ,  H04L12/26

CPC classification number: H04L45/70 ,  H04L12/1854 ,  H04L12/1877 ,  H04L43/08 ,  H04L45/16 ,  H04L45/22 ,  H04L45/24 ,  H04L45/302

Abstract: In one embodiment, a quality of one or more links of a particular node in a communication network may be determined, and then whether the quality of the one or more links is below a threshold may also be determined. In response to determining that the quality of at least one of the one or more links is above the threshold, a select one of the at least one of the one or more links with quality above the threshold may be utilized for communication with the particular node. Conversely, in response to determining that the quality of each of the one or more links is below the threshold, multi-path forwarding over a plurality of links of the particular node may be utilized for communication with the particular node.

Abstract translation: 在一个实施例中，可以确定通信网络中的特定节点的一个或多个链路的质量，然后也可以确定一个或多个链路的质量是否低于阈值。 响应于确定一个或多个链路中的至少一个链路的质量高于阈值，可以利用具有高于阈值的质量的一个或多个链路中的至少一个链路中的一个选择之一用于与特定节点的通信 。 相反，响应于确定一个或多个链路中的每一个的质量低于阈值，可以利用特定节点的多个链路上的多路径转发来与特定节点进行通信。

公开(公告)号：US20140122673A1

公开(公告)日：2014-05-01

申请号：US14148249

申请日：2014-01-06

Applicant: Cisco Technology, Inc.

Inventor： Shmuel Shaffer ,  Pascal Thubert ,  Patrick Wetterwald ,  Jean-Philippe Vasseur

IPC: H04L12/24

CPC classification number: H04L41/0816 ,  H04L29/12254 ,  H04L29/12273 ,  H04L29/12933 ,  H04L41/085 ,  H04L61/2038 ,  H04L61/2053 ,  H04L61/6068 ,  H04W8/26 ,  H04W40/248 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/22 ,  Y04S40/162

Abstract: A node in a Low power and Lossy Network (LLN) is managed by monitoring a routing configuration on a node in a LLN. A triggering parameter that is used to invoke an address change on a child node is tracked and a threshold against which to compare the triggering parameter is accessed. The triggering parameter is compared to the threshold. Based on results of comparing the triggering parameter to the threshold, it is determined that an address change at the child node is appropriate. An address change of a child node appearing in the routing configuration is invoked based on the determination that an address change is appropriate.

Abstract translation: 低功耗和有损网络（LLN）中的节点通过监视LLN中节点上的路由配置进行管理。 跟踪用于调用子节点上的地址更改的触发参数，并访问与之对比的触发参数的阈值。 将触发参数与阈值进行比较。 基于将触发参数与阈值进行比较的结果，确定子节点处的地址变化是适当的。 基于地址改变的确定，调用出现在路由配置中的子节点的地址变化。