公开(公告)号：US20060193277A1

公开(公告)日：2006-08-31

申请号：US11380152

申请日：2006-04-25

申请人： Richard Keaney ,  John O'Sullivan ,  Brian Hart ,  Philip Ryan ,  Kurt Lumbatis ,  Kevin Wong

发明人： Richard Keaney ,  John O'Sullivan ,  Brian Hart ,  Philip Ryan ,  Kurt Lumbatis ,  Kevin Wong

IPC分类号： H04B7/00

CPC分类号： H04L1/0061 ,  H04L1/0045 ,  H04L1/0072 ,  H04L1/0083

摘要： An apparatus, a carrier medium storing instructions to implement a method, and a method in a node of a wireless network able to receive packets that exactly or substantially conform to a wireless network standard according to which each packet includes a header having bits that have respective correct values in the case that the packet exactly conforms to the standard. The method includes receiving a start-of-packet (SOP) trigger that indicates that a packet may have been received, checking one or more bits in the header to determine whether or not they have their respective correct values, and continuing to process the packet in the case that the checking indicates that the checked bits have their respective correct values. In one implementation, the header includes a first field modulated at a known rate that has one or more reserved bit locations, and a second field modulated at a data rate indicated in the first field. In such an implementation, the checking includes processing the first field and checking one or more bits in the first field to determine whether or not they have their respective correct values, and, if the checked bits of the first field have their respective correct values, checking the second field for integrity.

摘要翻译： 存储用于实现方法的指令的装置，载体介质以及能够接收完全或基本上符合无线网络标准的分组的无线网络的节点中的方法，根据该装置，每个分组包括具有相应位的报头 在数据包完全符合标准的情况下的正确值。 该方法包括接收指示分组可能已被接收的分组开始（SOP）触发，检查报头中的一个或多个比特以确定它们是否具有各自的正确值，并继续处理分组 在检查指示所检查的位具有它们各自的正确值的情况下。 在一个实现中，报头包括以已知速率调制的具有一个或多个保留位位置的第一场和以第一场指示的数据速率调制的第二场。 在这种实现中，检查包括处理第一字段并检查第一字段中的一个或多个比特以确定它们是否具有它们各自的正确值，并且如果第一字段的被检查比特具有各自的正确值， 检查第二个字段的完整性。

公开(公告)号：US20070066259A1

公开(公告)日：2007-03-22

申请号：US11557728

申请日：2006-11-08

申请人： Philip Ryan ,  Andrew Adams ,  John O'Sullivan ,  Uri Parker ,  Brian Hart ,  Grzegorz Zyner

发明人： Philip Ryan ,  Andrew Adams ,  John O'Sullivan ,  Uri Parker ,  Brian Hart ,  Grzegorz Zyner

IPC分类号： H04B17/00 ,  H04B7/00

CPC分类号： H03G3/3078

摘要： A digital AGC system for burst operation, particularly suited for receiving packets in a wireless local area network. One embodiment includes a log detector that provides a signal strength measure, called the received signal strength indication (RSSI) over a wide dynamic range. The AGC system includes estimating the power in a received signal by averaging the log of the signal power. The Start of Packet detection avoids using the radio receiver's main analog to digital converters to preserve power.

摘要翻译： 一种用于突发操作的数字AGC系统，特别适用于在无线局域网中接收分组。 一个实施例包括在宽动态范围内提供称为接收信号强度指示（RSSI）的信号强度测量的对数检测器。 AGC系统包括通过对信号功率的对数求平均来估计接收信号中的功率。 分组检测的开始避免使用无线电接收机的主要模数转换器来保持功率。

公开(公告)号：US20080039119A1

公开(公告)日：2008-02-14

申请号：US11874835

申请日：2007-10-18

申请人： Jason Crawford ,  John O'Sullivan ,  Brian Hart

发明人： Jason Crawford ,  John O'Sullivan ,  Brian Hart

IPC分类号： H04Q7/20

CPC分类号： G01S5/0289 ,  G01S5/021

摘要： A method and an apparatus for radiolocation using time differences of arrival. The method includes receiving transmit timestamps from a set of wireless stations of a wireless network. Each station transmits at least once. The transmit timestamp uses a local timestamping clock to indicate when a station transmitted a packet. The method further includes receiving sets of timestamped captured samples from each station that receives one of the transmitted packets. The times of arrival of each packet at each station are determined from the received sets of timestamped captured samples, and, the relative positions of the stations are determined from the determined times of arrival and the received transmit timestamps. The transmitting by the stations is in a round robin manner one station after the other, and several round robins may be used to mutually calibrate local clocks. Also an apparatus for inclusion in a station of a wireless network. The apparatus includes a buffer subsystem and a timestamping subsystem, such that the station can capture and timestamp a set of samples of a received signal, and send the captured timestamped samples to a processing entity for time difference of arrival location determination.

摘要翻译： 使用到达时差的无线电定位方法和装置。 该方法包括从无线网络的一组无线站接收发送时间戳。 每个站至少发送一次。 发送时间戳使用本地时间戳来指示电台何时发送数据包。 所述方法还包括从接收所发送的分组之一的每个站接收时间戳捕获的采样集。 从接收到的时间戳捕获采样集合确定每个分组在每个站的到达时间，并且从确定的到达时间和接收到的发送时间戳确定站的相对位置。 台站的发送是一个接一个的循环方式，可以使用几个循环机来相互校准本地时钟。 也是用于包括在无线网络的站中的装置。 该装置包括缓冲子系统和时间戳子系统，使得该站可以捕获并对时间戳进行一个接收信号的采样，并将所捕获的带时间戳的采样发送到处理实体，用于到达位置确定的时差。

公开(公告)号：US20070092015A1

公开(公告)日：2007-04-26

申请号：US11565745

申请日：2006-12-01

申请人： Brian Hart ,  John O'Sullivan

发明人： Brian Hart ,  John O'Sullivan

IPC分类号： H04K1/10 ,  H04J11/00

CPC分类号： H04L27/2647 ,  H04L25/0228

摘要： A method and apparatus for estimating channel characteristics in a multicarrier wireless receiver such as an OFDM wireless receiver. The method includes determining a channel estimate for each of a set of subcarriers by receiving multicarrier data as a result of a wireless transmission of data that includes a known signal, wherein the determining uses a part of the received data that corresponds to the known signal. The method further includes smoothing the channel estimates according to a smoothing filter to form smoothed channel estimates. The smoothed channel estimate for a particular subcarrier includes a contribution from the channel estimates of one or more subcarriers nearby the particular subcarrier take advantage of correlation that may exist between the particular subcarrier's channel and the channels of the one or more nearby subcarriers. In one version, the transmitted data includes at least one additional known signal, and each smoothed channel estimate is a smoothed version of the average of sets of channel estimates. In such a version, each set of channel estimates is determined using a respective part of the received data that corresponds to a corresponding one of the known signals.

摘要翻译： 用于估计诸如OFDM无线接收机的多载波无线接收机中的信道特性的方法和装置。 该方法包括通过作为包括已知信号的数据的无线传输的结果接收多载波数据来确定一组子载波中的每一个的信道估计，其中确定使用与已知信号相对应的接收数据的一部分。 该方法还包括根据平滑滤波器平滑信道估计以形成平滑信道估计。 对于特定子载波的平滑信道估计包括来自特定子载波附近的一个或多个子载波的信道估计的贡献利用可能存在于特定子载波信道和一个或多个附近子载波的信道之间的相关性。 在一个版本中，传输的数据包括至少一个附加的已知信号，并且每个平滑的信道估计是信道估计的平均值的平滑版本。 在这样的版本中，使用对应于已知信号中的相应一个的接收数据的相应部分来确定每组信道估计。

公开(公告)号：US20070188376A1

公开(公告)日：2007-08-16

申请号：US11737542

申请日：2007-04-19

申请人： David Theobold ,  Christopher Meil ,  Edward Wright ,  James Amos ,  Brian Hart ,  Jason Crawford ,  Philip O'Sullivan ,  Kevin Wong

发明人： David Theobold ,  Christopher Meil ,  Edward Wright ,  James Amos ,  Brian Hart ,  Jason Crawford ,  Philip O'Sullivan ,  Kevin Wong

IPC分类号： G01S13/00 ,  G01S13/52 ,  H04Q7/20 ,  G08B1/08

CPC分类号： G01S7/021 ,  H04B1/1027 ,  H04K3/226 ,  H04K3/822 ,  H04K2203/18 ,  H04W16/14

摘要： A method for radar protection. The method includes recording energy events and calculating differences in recorded energy events to determine pulses. The method further includes sorting intervals between pulses into histogram bins, each bin representing a range of time intervals between two pulses, each pulse indicative of a radar frequency and limiting network traffic on a frequency based on a selected bin count.

摘要翻译： 一种雷达保护方法。 该方法包括记录能量事件并计算记录的能量事件中的差异以确定脉冲。 该方法还包括将脉冲之间的间隔排列成直方图区段，每个区段表示两个脉冲之间的时间间隔的范围，每个脉冲指示雷达频率，并且基于所选择的存储体计数限制频率上的网络流量。

公开(公告)号：US20050195744A1

公开(公告)日：2005-09-08

申请号：US11099115

申请日：2005-04-05

申请人： Philip Ryan ,  Andrew Adams ,  Brian Hart ,  Jason Crawford ,  Andrew Myles

发明人： Philip Ryan ,  Andrew Adams ,  Brian Hart ,  Jason Crawford ,  Andrew Myles

IPC分类号： H04L12/28 ,  H04L12/56 ,  H04W24/00 ,  H04W48/20 ,  H04W84/12 ,  H04W84/18 ,  H04L12/26

CPC分类号： H04W48/20 ,  H04L1/0002 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/206 ,  H04L5/0091 ,  H04W24/00 ,  H04W84/12 ,  H04W84/18

摘要： An apparatus in a node of a wireless network for setting the data rate for sending data to a remote node, and a method for setting the data rate. The method includes receiving a packet from the remote node, determining a measure of signal quality for the received packet; and selecting the data rate for communicating to the remote node according to at least the determined signal quality. The measure of signal quality is a measure of the EVM of the received packet. One implementation conforms to one or more variants of the IEEE 802.11 standard that uses OFDM packets.

公开(公告)号：US20070129034A1

公开(公告)日：2007-06-07

申请号：US11672132

申请日：2007-02-07

申请人： Andrew Adams ,  Philip Ryan ,  Brian Hart

发明人： Andrew Adams ,  Philip Ryan ,  Brian Hart

IPC分类号： H04B17/02

CPC分类号： H04W52/52 ,  H03G3/3068

摘要： An apparatus, a carrier medium storing instructions to implement a method, and a method for controlling the gain of a radio receiver for receiving packets of information in a wireless network. The receiver is connected to an antenna subsystem and has receive signal path including a plurality of sections including a first section coupled to the antenna subsystem and a next section. Each section has an adjustable gain and is able to provide a measure of the signal strength at its output. The method includes waiting for a start of packet indication, providing a measure of the signal strength at the output of the first section and the next section, and adjusting the gains of the first and the next sections using the provided measured signal strengths. In one embodiment, the receive signal path includes a filter, the provided measure for the first section is before the filter, and the provided measure for the second section is after the filter. The gain adjusting sets first section's gain according to the measured signal strength at the output of the first section and sets the next section's gain according to the provided measure of signal strength at the output of the next section relative to the provided measure of signal strength at the output of the first section. In one embodiment, the gain adjusting o is carried out in sequential AGC stages, one stage setting the gain of one or more sections.

摘要翻译： 存储用于实现方法的指令的装置，载体介质以及用于控制无线电接收机的增益的方法，用于在无线网络中接收信息分组。 接收机连接到天线子系统，并且具有包括多个部分的接收信号路径，所述多个部分包括耦合到天线子系统的第一部分和下一部分。 每个部分都有一个可调节的增益，能够提供其输出信号强度的测量。 该方法包括等待分组指示的开始，提供在第一部分和下一部分的输出处的信号强度的测量，以及使用所提供的测量信号强度来调整第一和下一个部分的增益。 在一个实施例中，接收信号路径包括滤波器，所提供的第一部分的测量在滤波器之前，并且所提供的第二部分的测量值在滤波器之后。 增益调整根据第一部分输出端的测量信号强度设置第一部分的增益，并根据提供的下一部分输出端的信号强度相对于所提供的信号强度测量值来设置下一部分的增益 第一部分的输出。 在一个实施例中，增益调整o在连续AGC阶段中执行，一个阶段设置一个或多个部分的增益。

公开(公告)号：US09068422B2

公开(公告)日：2015-06-30

申请号：US13344843

申请日：2012-01-06

申请人： Brian Hart ,  Cameron J. Berry

发明人： Brian Hart ,  Cameron J. Berry

IPC分类号： E21B33/035 ,  E21B33/037 ,  E21B33/038

CPC分类号： E21B33/037 ,  E21B33/035 ,  E21B33/038

摘要： A sealing mechanism is provided. In one embodiment, a system includes a connector configured to couple one or more flow-control valves to equipment installed at a well and an isolation sleeve configured to be retained by the connector. The isolation sleeve may include a seal and a hydraulically actuated piston disposed adjacent one another about a body of the isolation sleeve such that actuation of the piston engages the seal. Additional systems, devices, and methods are also disclosed.

摘要翻译： 提供了一种密封机构。 在一个实施例中，系统包括被配置为将一个或多个流量控制阀耦合到安装在井处的设备和被配置为由连接器保持的隔离套管的连接器。 隔离套管可以包括密封件和液压致动的活塞，其围绕隔离套筒的本体彼此相邻设置，使得活塞的致动接合密封件。 还公开了附加的系统，装置和方法。

公开(公告)号：US09042318B2

公开(公告)日：2015-05-26

申请号：US13547585

申请日：2012-07-12

申请人： Brian Hart ,  Raghuram Rangarajan

发明人： Brian Hart ,  Raghuram Rangarajan

IPC分类号： H04W4/00 ,  H04W72/08 ,  H04W72/02

CPC分类号： H04W72/082 ,  H04W72/02

摘要： Disclosed, in example embodiment herein, is an apparatus comprising an interface and channel selection logic coupled to the interface. The channel selection logic is operable to receive data representative of neighboring wireless devices to a wireless device occupying a channel for a plurality of channels via the interface. The channel selection logic is responsive to receiving the data representative of neighboring wireless devices occupying the plurality of channels to generate a graph for each of the plurality of channels, wherein vertices of the graph represent the wireless device and neighboring wireless devices occupying the channel and edges of the graph represent wireless devices with overlapping coverage areas. The channel selection logic selects the channel for the wireless device whose graph has the smallest radius.

摘要翻译： 在本文的示例实施例中公开了一种包括耦合到该接口的接口和信道选择逻辑的装置。 频道选择逻辑可操作以经由接口将代表相邻无线装置的数据接收到占用多个频道的频道的无线装置。 信道选择逻辑响应于接收代表占用多个信道的相邻无线设备的数据，以生成多个信道中的每个信道的图形，其中图形的顶点表示无线设备，并且邻近的无线设备占据信道和边缘 图表示具有重叠覆盖区域的无线设备。 信道选择逻辑为图形具有最小半径的无线设备选择信道。

公开(公告)号：US08905423B2

公开(公告)日：2014-12-09

申请号：US13776849

申请日：2013-02-26

申请人： Brian Hart

发明人： Brian Hart

IPC分类号： B60D1/52 ,  B62J9/00 ,  B62D63/06 ,  B62K27/00

CPC分类号： B62D63/061 ,  B62J9/00 ,  B62K27/003

摘要： Provided is an all-terrain trailer for hauling large objects over uneven landscapes. The trailer is capable of carrying items within its volume in both its deployed and stowed state. Deployed, the trailer is a basket shaped body with a pair of wheels removably secured via a removable axle. The trailer is attached to the lead vehicle using a removable trailer hitch linkage that is secured to the basket body via fasteners. In a stowed state, the tires and axle are stored within a storage area in a lower portion of the basket body. In one embodiment, a false bottom is placed over the storage area, creating a flat trailer bed that objects can be laid upon. The basket body is removably secured to the hood of a lead vehicle, thereby providing a carrying basket while the vehicle is in transit.

摘要翻译： 提供了一个全地形拖车，用于拖拉不平坦的景观上的大物体。 拖车能够在其部署和收起状态下携带其体积内的物品。 拖车是一个篮子形的主体，一对轮子通过一个可拆卸的轴可拆卸地固定。 拖车使用可移动的挂车联结装置连接到牵引车辆，该联动装置通过紧固件固定到筐体上。 在收起状态下，轮胎和轴被储存在篮体的下部的存储区域内。 在一个实施例中，将假底部放置在存储区域上方，形成可放置对象的平坦拖车床。 筐体可拆卸地固定到引导车辆的引擎盖上，从而在车辆行驶时提供载物篮。