公开(公告)号：US20100238871A1

公开(公告)日：2010-09-23

申请号：US12405429

申请日：2009-03-17

Applicant: Predrag Tosic ,  Sandeep Jay Shetty ,  Douglas Chan

Inventor： Predrag Tosic ,  Sandeep Jay Shetty ,  Douglas Chan

IPC: H04W72/00 ,  H04W84/12

CPC classification number: H04W16/10 ,  H04W24/00 ,  H04W28/16 ,  H04W72/00 ,  H04W84/12

Abstract: Techniques are provided to determine channel assignments for wireless access point (AP) devices in a wireless local area network (WLAN). From each of a plurality of AP devices operating at least one of a plurality of channels in the WLAN, wireless activity data is received that represents activity in each channel associated with signals of devices operating in the WLAN and associated with signals and energy from devices that are not operating in the WLAN as detected by the AP devices by receiving radio frequency energy in each of the plurality of channels. During a channel plan evaluation session, the wireless activity data is evaluated for multiple ones of the plurality of access point devices to determine whether the channel on which an access point device operates should be changed such that a decision to change the channel for at least one access point is limited to a localized region of the wireless network and does not necessarily affect a channel change decision for access points outside of the localized region of the wireless network. The channel on which the at least one access point device operates is changed or assigned based on the evaluation. In one form, the wireless activity data is a single metric that is derived from multiple pieces of data, each representing a different component of wireless activity determined by an AP device to be occurring in a channel.

Abstract translation: 提供技术来确定无线局域网（WLAN）中的无线接入点（AP）设备的信道分配。 从操作WLAN中的至少一个信道的多个AP设备中的每一个接收到无线活动数据，其表示与在WLAN中操作的设备的信号相关联的每个信道中的活动，并且与来自设备的信号和能量相关联 在AP中通过在多个信道中的每一个中接收射频能量而不在AP中操作。 在信道计划评估会话期间，对多个接入点设备中的多个接入点设备的无线活动数据进行评估，以确定接入点设备所在的信道是否应该被改变，以便决定改变至少一个接入点设备的信道 接入点限于无线网络的局部区域，并且不一定影响无线网络的局部区域之外的接入点的信道改变决定。 基于评估，改变或分配至少一个接入点设备在其上操作的信道。 在一种形式中，无线活动数据是从多条数据导出的单个度量，每个数据表示由AP设备在通道中发生的无线活动的不同组件。

公开(公告)号：US08873526B2

公开(公告)日：2014-10-28

申请号：US12971540

申请日：2010-12-17

Applicant: Shmuel Shaffer ,  Sandeep Jay Shetty ,  Jean-Philippe Vasseur

Inventor： Shmuel Shaffer ,  Sandeep Jay Shetty ,  Jean-Philippe Vasseur

IPC: H04W4/00 ,  H04W74/08 ,  H04L12/413 ,  H04W84/18 ,  H04W28/04

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为自己。响应于确定无线信号是针对特定节点，特定节点可以发送非 - - 在接收到的无线信号期间， - 聚合无线载波侦听警报（CSDA）信号，以请求特定节点的通信距离内的其他节点在所接收的无线信号的持续时间内不发射。 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：US08818437B2

公开(公告)日：2014-08-26

申请号：US13195924

申请日：2011-08-02

Applicant: Douglas Chan ,  Suyog Deshpande ,  Sandeep Jay Shetty ,  David Kloper

Inventor： Douglas Chan ,  Suyog Deshpande ,  Sandeep Jay Shetty ,  David Kloper

IPC: H04B7/00 ,  H04B17/00 ,  H04B15/00

CPC classification number: H04W72/085

Abstract: Techniques are provided to improve the performance of wireless devices that serve wireless client devices in a wireless network in the presence of narrowband interference. The wireless device that serves wireless client devices in the wireless network receives energy in a plurality of channels of a frequency band. The received energy is analyzed for occurrence and type of interference in each channel. A quality metric is generated for each channel incorporating the occurrence and type of interference detected in the channel. For each channel, a bias value against selection of the channel is assigned based on whether narrowband interference is present in the channel. The bias value for each channel is applied to the quality metric for the channel to produce an adjusted quality metric for each channel. A channel is selected based on the adjusted quality metric for each of the plurality of channels.

Abstract translation: 提供技术来改善在存在窄带干扰的情况下为无线网络中的无线客户端设备提供服务的无线设备的性能。 为无线网络中的无线客户端设备提供的无线设备在频带的多个信道中接收能量。 分析每个通道的接收能量的发生和干扰类型。 为每个通道产生质量度量，其中包含在通道中检测到的干扰的发生和类型。 对于每个信道，基于信道中是否存在窄带干扰来分配针对信道选择的偏置值。 每个通道的偏置值被应用于通道的质量度量，以产生每个通道的调整质量度量。 基于针对多个信道中的每一个的经调整的质量度量来选择频道。

公开(公告)号：US08756449B2

公开(公告)日：2014-06-17

申请号：US13043213

申请日：2011-03-08

Applicant: Shmuel Shaffer ,  Jean-Philippe Vasseur ,  Sandeep Jay Shetty

Inventor： Shmuel Shaffer ,  Jean-Philippe Vasseur ,  Sandeep Jay Shetty

IPC: G06F1/26

CPC classification number: G06F1/26 ,  G01R29/16 ,  G01R29/18 ,  H02J3/14 ,  H02J3/26 ,  Y02B70/3225 ,  Y02E40/50 ,  Y04S20/222

Abstract: In one embodiment, a device in a computer network monitors an alternating-current (AC) waveform of an electrical power source at the device, where the power source is part of a polyphase power source system. Once the device determines a particular phase of the polyphase power source system at the device, then the device joins a directed acyclic graph (DAG) specific to the particular phase. In another embodiment, a device detects a time of a zero crossing of the AC waveform, and may then determine a particular phase of the polyphase power source system at the device based on the time of the zero crossing relative to a corresponding location within a frequency hopping superframe of the computer network.

Abstract translation: 在一个实施例中，计算机网络中的设备监视设备处的电源的交流（AC）波形，其中电源是多相电源系统的一部分。 一旦器件确定器件上的多相电源系统的特定相位，器件将连接特定相位的有向非循环图（DAG）。 在另一个实施例中，设备检测AC波形的过零时间，然后可以基于相对于频率内的对应位置的过零点的时间来确定设备处的多相电源系统的特定相位 跳台超级计算机网络。

公开(公告)号：US08583978B2

公开(公告)日：2013-11-12

申请号：US12942977

申请日：2010-11-09

Applicant: Shmuel Shaffer ,  Jean-Philippe Vasseur ,  Sandeep Jay Shetty

Inventor： Shmuel Shaffer ,  Jean-Philippe Vasseur ,  Sandeep Jay Shetty

IPC: G06F11/00

CPC classification number: H04L1/1825 ,  H04L1/1867 ,  H04L2001/0093 ,  H04L2001/0097

Abstract: In one implementation, a method of distributing a multicast message in a wireless mesh network includes receiving a multicast message from a parent node of an intermediate node. The method includes transmitting the multicast message to child nodes of the intermediate node. The method includes storing the multicast message in a cache at the intermediate node. The method includes intercepting an acknowledgement message from each acknowledging child node within an acknowledging subset of less than all of the child nodes. The method includes accessing information indicating a population of the child nodes to which the multicast message transmission was directed. The method includes comparing the acknowledging subset of the child nodes with the population of the child nodes. The method includes identifying a non-acknowledging subset of less than all of the child nodes. The method includes retransmitting the multicast message to the non-acknowledging subset of the child nodes.

Abstract translation: 在一个实现中，在无线网状网络中分发多播消息的方法包括从中间节点的父节点接收多播消息。 该方法包括将多播消息发送到中间节点的子节点。 该方法包括将多播消息存储在中间节点的高速缓存中。 该方法包括从小于所有子节点的确认子集中截取来自每个确认子节点的确认消息。 该方法包括访问指示多播消息传输所针对的子节点的总体的信息。 该方法包括将子节点的确认子集与子节点的群体进行比较。 该方法包括识别少于所有子节点的非确认子集。 该方法包括将多播消息重传到子节点的非确认子集。

公开(公告)号：US08289901B2

公开(公告)日：2012-10-16

申请号：US12405429

申请日：2009-03-17

Applicant: Predrag Tosic ,  Sandeep Jay Shetty ,  Douglas Chan

Inventor： Predrag Tosic ,  Sandeep Jay Shetty ,  Douglas Chan

IPC: H04W4/00 ,  H04B7/26 ,  H04L1/20

CPC classification number: H04W16/10 ,  H04W24/00 ,  H04W28/16 ,  H04W72/00 ,  H04W84/12

Abstract: Techniques are provided to determine channel assignments for wireless access point (AP) devices in a wireless local area network (WLAN). From each of a plurality of AP devices operating at least one of a plurality of channels in the WLAN, wireless activity data is received that represents activity in each channel associated with signals of devices operating in the WLAN and associated with signals and energy from devices that are not operating in the WLAN as detected by the AP devices by receiving radio frequency energy in each of the plurality of channels. During a channel plan evaluation session, the wireless activity data is evaluated for multiple ones of the plurality of access point devices to determine whether the channel on which an access point device operates should be changed such that a decision to change the channel for at least one access point is limited to a localized region of the wireless network and does not necessarily affect a channel change decision for access points outside of the localized region of the wireless network. The channel on which the at least one access point device operates is changed or assigned based on the evaluation. In one form, the wireless activity data is a single metric that is derived from multiple pieces of data, each representing a different component of wireless activity determined by an AP device to be occurring in a channel.

Abstract translation: 提供技术来确定无线局域网（WLAN）中的无线接入点（AP）设备的信道分配。 从操作WLAN中的至少一个信道的多个AP设备中的每一个接收到无线活动数据，其表示与在WLAN中操作的设备的信号相关联的每个信道中的活动，并且与来自设备的信号和能量相关联 在AP中通过在多个信道中的每一个中接收射频能量而不在AP中操作。 在信道计划评估会话期间，对多个接入点设备中的多个接入点设备的无线活动数据进行评估，以确定接入点设备所在的信道是否应该被改变，以便决定改变至少一个接入点设备的信道 接入点限于无线网络的局部区域，并且不一定影响无线网络的局部区域之外的接入点的信道改变决定。 基于评估，改变或分配至少一个接入点设备在其上操作的信道。 在一种形式中，无线活动数据是从多条数据导出的单个度量，每个数据表示由AP设备在通道中发生的无线活动的不同组件。

公开(公告)号：US20120230370A1

公开(公告)日：2012-09-13

申请号：US13043156

申请日：2011-03-08

Applicant: Shmuel Shaffer ,  Sandeep Jay Shetty ,  Jean-Philippe Vasseur

Inventor： Shmuel Shaffer ,  Sandeep Jay Shetty ,  Jean-Philippe Vasseur

IPC: H04B1/713

CPC classification number: H04B1/713 ,  H04L5/0012 ,  H04L45/48 ,  H04W28/04 ,  H04W28/065 ,  H04W40/246 ,  H04W74/0841 ,  H04W84/18

Abstract: In one embodiment, a sender in a frequency hopping wireless network classifies a message as a large message to be fragmented into a plurality of packets for transmission to a receiver, and in response, indicates to the receiver that the message is a large message to request use of an orthogonal frequency hopping sequence between the sender and receiver for the duration of the large message transmission, the orthogonal frequency hopping sequence orthogonal to a shared frequency hopping sequence of the wireless network. Thereafter, the sender transmits the large message to the receiver on the orthogonal frequency hopping sequence, and returns to the shared frequency hopping sequence upon completion. In another embodiment, the receiver receives the indication that a message is a large message (requesting use of the orthogonal frequency hopping sequence). If the receiver can comply, the large message is received on the orthogonal frequency hopping sequence.

Abstract translation: 在一个实施例中，跳频​​无线网络中的发送者将消息分类为大的消息，以被分段成多个分组以便传输到接收机，并且作为响应，向接收者指示该消息是要求的大消息 在大消息传输的持续时间内，在发送方和接收方之间使用正交跳频序列，正交跳频序列与无线网络的共享跳频序列正交。 此后，发送方在正交跳频序列上向接收机发送大消息，并在完成时返回到共享跳频序列。 在另一个实施例中，接收机接收消息是大消息（请求使用正交跳频序列）的指示。 如果接收机符合要求，则在正交跳频序列上接收到大的消息。

公开(公告)号：US20120158933A1

公开(公告)日：2012-06-21

申请号：US12971076

申请日：2010-12-17

Applicant: Sandeep Jay Shetty ,  Shmuel Shaffer ,  Jean-Philippe Vasseur

Inventor： Sandeep Jay Shetty ,  Shmuel Shaffer ,  Jean-Philippe Vasseur

IPC: G06F15/173

CPC classification number: H04L41/12 ,  H04L41/0893

Abstract: In one embodiment, a node may determine a topology of a plurality of reporting nodes within a directed acyclic graph (DAG) in a computer network. The reporting nodes may then be assigned to one of a plurality of reporting groups, where reporting nodes are allowed to report only during designated time windows corresponding to their assigned reporting group. The reporting nodes may then be informed of at least their own assignment to a particular reporting group. In another embodiment, a particular reporting node may join the DAG, and may also receive an assignment to one of a plurality of reporting groups. Accordingly, the particular reporting node may also determine designated time windows corresponding to the assigned reporting group, where the particular reporting node is allowed to report only during the designated time windows.

Abstract translation: 在一个实施例中，节点可以确定计算机网络中的有向无环图（DAG）内的多个报告节点的拓扑。 然后可以将报告节点分配给多个报告组中的一个，其中允许报告节点仅在与其分配的报告组对应的指定时间窗口期间报告。 然后可以向报告节点通知至少他们自己对特定报告组的分配。 在另一个实施例中，特定报告节点可以加入DAG，并且还可以接收对多个报告组之一的分配。 因此，特定报告节点还可以确定与分配的报告组相对应的指定时间窗口，其中允许特定报告节点仅在指定的时间窗口期间报告。

公开(公告)号：US20120155397A1

公开(公告)日：2012-06-21

申请号：US12971540

申请日：2010-12-17

Applicant: Shmuel Shaffer ,  Sandeep Jay Shetty ,  Jean-Philippe Vasseur

Inventor： Shmuel Shaffer ,  Sandeep Jay Shetty ,  Jean-Philippe Vasseur

IPC: H04W28/00

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为自己。响应于确定无线信号是针对特定节点，特定节点可以发送非 - - 在接收到的无线信号期间， - 聚合无线载波侦听警报（CSDA）信号，以请求特定节点的通信距离内的其他节点在所接收的无线信号的持续时间内不发射。 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，或者 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：US20120117268A1

公开(公告)日：2012-05-10

申请号：US12942972

申请日：2010-11-09

Applicant: Shmuel Shaffer ,  Jean-Philippe Vasseur ,  Sandeep Jay Shetty

Inventor： Shmuel Shaffer ,  Jean-Philippe Vasseur ,  Sandeep Jay Shetty

IPC: G06F15/173

CPC classification number: H04W76/007 ,  H04L29/06 ,  H04L45/00 ,  H04L45/24 ,  H04W4/38 ,  H04W40/22 ,  H04W40/28 ,  H04W76/50 ,  H04W84/18 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/22

Abstract: According to one or more implementations of the disclosure, packets may be transmitted in a low power and lossy network (LLN) by receiving, on a first node, a message from a sending node, and by activating a critical message configuration to be applied in routing the message. A message identifier (e.g., signature) for the message may also be received or gleaned. The message identifier can be compared at the first node to a list of stored message identifiers, created based on routing history, to determine if the message has already been received. As such, if the message has not been received at the first node previously, a first parent and a second parent for the message are identified and the message, along with the critical message indication, can be transmitted to the first parent and the second parent, thereby achieving redundancy in the routing of the message.

Abstract translation: 根据本公开的一个或多个实现方式，分组可以通过在第一节点上从发送节点接收消息并且通过激活要应用的关键消息配置来在低功率和有损网络（LLN）中发送 路由消息。 消息的消息标识符（例如，签名）也可以被接收或收集。 可以将消息标识符在第一节点处与基于路由历史创建的存储消息标识符列表进行比较，以确定消息是否已经被接收。 因此，如果先前还没有在第一个节点处接收到消息，则识别该消息的第一个父节点和第二个父节点，并将该消息连同关键消息指示一起发送到第一个父节点和第二个父节点 从而在消息的路由中实现冗余。