公开(公告)号：US09356858B2

公开(公告)日：2016-05-31

申请号：US14474655

申请日：2014-09-02

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/717 ,  H04W40/22 ,  H04W40/24 ,  H04W40/26 ,  H04L12/707

CPC classification number: H04L45/42 ,  H04L45/22 ,  H04W40/22 ,  H04W40/246 ,  H04W40/26

Abstract: In one embodiment, a data aggregator discovery (DAD) message may be distributed by an associated data aggregator, the DAD message identifying the initiating data aggregator, and comprising a recorded route taken from the data aggregator to a receiving particular node as well as a total path cost for the particular node to reach a root node of the DAG through the recorded route and via the data aggregator. The receiving particular node determines a path cost increase (PCI) associated with use of the data aggregator based on the total path cost as compared to a DAG-based path cost for the particular node to reach the root node via the DAG. If the PCI is below a configured threshold, the particular node may redirect traffic to the data aggregator as source-routed traffic according to the recorded route. The traffic may then be aggregated by the data aggregator, accordingly.

Abstract translation: 在一个实施例中，数据聚合器发现（DAD）消息可以由相关联的数据聚合器分发，DAD消息标识发起数据聚合器，并且包括从数据聚合器到接收特定节点的记录路由以及总数 特定节点通过记录的路由并经由数据聚合器到达DAG的根节点的路径开销。 与特定节点通过DAG到达根节点的基于DAG的路径开销相比，接收特定节点基于总路径开销来确定与数据聚合器的使用相关联的路径成本增加（PCI）。 如果PCI低于配置的阈值，则特定节点可以根据记录的路由将流量重定向为数据聚合器作为源路由业务。 因此，流量可以由数据聚合器进行聚合。

公开(公告)号：US20150003251A1

公开(公告)日：2015-01-01

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 ,  H04L12/741 ,  H04L12/841

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：US20140105027A1

公开(公告)日：2014-04-17

申请号：US14107565

申请日：2013-12-16

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/851

CPC classification number: H04L47/2433 ,  H04L47/10 ,  H04L47/17 ,  H04L47/245 ,  H04L47/724 ,  H04L47/805 ,  H04L47/826

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US09306620B2

公开(公告)日：2016-04-05

申请号：US14296728

申请日：2014-06-05

Applicant: Cisco Technology, Inc.

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

IPC: H04B1/713 ,  H04B1/7143

CPC classification number: H04B1/7156 ,  H04B1/713 ,  H04B1/7143 ,  H04B2001/71563 ,  H04W72/0453

Abstract: In one embodiment, a management device determines a topology of nodes in a network. Based on the topology, frequency hopping sequences are assigned (and notified) to the nodes such that each particular node of a certain set of the nodes is assigned a frequency hopping sequence on which to transmit that is different than frequency hopping sequences of neighbors and hidden neighbors of that particular node. In another embodiment, a transmitting node first transmits a transmission indication signal on its particular frequency band based on its frequency hopping sequence, and then transmits a message on the particular frequency band. In a further embodiment, a receiving node listening to a plurality of frequency bands may detect the transmission indication signal on the particular frequency band. In response, the receiving node filters out all frequency bands other than the particular frequency band, and receives the following transmission on that particular frequency band.

Abstract translation: 在一个实施例中，管理设备确定网络中的节点的拓扑。 基于拓扑结构，向节点分配（并通知）跳频序列，使得特定节点集合的每个特定节点被分配与其相邻的跳频序列不同的发射跳频序列，并且被隐藏 该特定节点的邻居。 在另一个实施例中，发送节点首先基于其跳频序列在其特定频带上发送传输指示信号，然后在特定频带上发送消息。 在另一个实施例中，收听多个频带的接收节点可以检测特定频带上的传输指示信号。 作为响应，接收节点滤除除了特定频带之外的所有频带，并在该特定频带上接收以下传输。

公开(公告)号：US20140286377A1

公开(公告)日：2014-09-25

申请号：US14296728

申请日：2014-06-05

Applicant: Cisco Technology, Inc.

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

IPC: H04B1/713

CPC classification number: H04B1/7156 ,  H04B1/713 ,  H04B1/7143 ,  H04B2001/71563 ,  H04W72/0453

Abstract: In one embodiment, a management device determines a topology of nodes in a network. Based on the topology, frequency hopping sequences are assigned (and notified) to the nodes such that each particular node of a certain set of the nodes is assigned a frequency hopping sequence on which to transmit that is different than frequency hopping sequences of neighbors and hidden neighbors of that particular node. In another embodiment, a transmitting node first transmits a transmission indication signal on its particular frequency band based on its frequency hopping sequence, and then transmits a message on the particular frequency band. In a further embodiment, a receiving node listening to a plurality of frequency bands may detect the transmission indication signal on the particular frequency band. In response, the receiving node filters out all frequency bands other than the particular frequency band, and receives the following transmission on that particular frequency band.

Abstract translation: 在一个实施例中，管理设备确定网络中的节点的拓扑。 基于拓扑结构，向节点分配（并通知）跳频序列，使得特定节点集合的每个特定节点被分配与其相邻的跳频序列不同的发射跳频序列，并且被隐藏 该特定节点的邻居。 在另一个实施例中，发送节点首先基于其跳频序列在其特定频带上发送传输指示信号，然后在特定频带上发送消息。 在另一个实施例中，收听多个频带的接收节点可以检测特定频带上的传输指示信号。 作为响应，接收节点滤除除了特定频带之外的所有频带，并在该特定频带上接收以下传输。

公开(公告)号：US09143456B2

公开(公告)日：2015-09-22

申请号：US14107565

申请日：2013-12-16

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/28 ,  H04L12/851 ,  H04L12/54 ,  H04L12/801 ,  H04L12/911 ,  H04L12/913 ,  H04L12/927

CPC classification number: H04L47/2433 ,  H04L47/10 ,  H04L47/17 ,  H04L47/245 ,  H04L47/724 ,  H04L47/805 ,  H04L47/826

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20150030033A1

公开(公告)日：2015-01-29

申请号：US14474655

申请日：2014-09-02

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/717 ,  H04L12/707

CPC classification number: H04L45/42 ,  H04L45/22 ,  H04W40/22 ,  H04W40/246 ,  H04W40/26

Abstract: In one embodiment, a data aggregator discovery (DAD) message may be distributed by an associated data aggregator, the DAD message identifying the initiating data aggregator, and comprising a recorded route taken from the data aggregator to a receiving particular node as well as a total path cost for the particular node to reach a root node of the DAG through the recorded route and via the data aggregator. The receiving particular node determines a path cost increase (PCI) associated with use of the data aggregator based on the total path cost as compared to a DAG-based path cost for the particular node to reach the root node via the DAG. If the PCI is below a configured threshold, the particular node may redirect traffic to the data aggregator as source-routed traffic according to the recorded route. The traffic may then be aggregated by the data aggregator, accordingly.

Abstract translation: 在一个实施例中，数据聚合器发现（DAD）消息可以由相关联的数据聚合器分发，DAD消息标识发起数据聚合器，并且包括从数据聚合器到接收特定节点的记录路由以及总数 特定节点通过记录的路由并经由数据聚合器到达DAG的根节点的路径开销。 与特定节点通过DAG到达根节点的基于DAG的路径开销相比，接收特定节点基于总路径开销来确定与数据聚合器的使用相关联的路径成本增加（PCI）。 如果PCI低于配置的阈值，则特定节点可以根据记录的路由将流量重定向为数据聚合器作为源路由业务。 因此，流量可以由数据聚合器进行聚合。

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。