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1.发明申请公开(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。
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2.发明申请WIRELESS COMPUTER NETWORK INLUDING A MOBILE APPLIANCE CONTAINING A SINGLE CHIP TRANSCEIVER 有权无线计算机网络，包含单芯片收发器的移动电话公开(公告)号：US20060194614A1
公开(公告)日：2006-08-31
申请号：US11380165
申请日：2006-04-25
申请人： Neil Weste , Andrew Adams , Philip Ryan , John O'Sullivan , David Skellern , Richard Keaney
发明人： Neil Weste , Andrew Adams , Philip Ryan , John O'Sullivan , David Skellern , Richard Keaney
摘要： A wireless computer data network includes several untethered mobile units that make ad-hoc data connections with an Internet-connected base station using the IEEE-802.11a standard. Each unit includes a radio transceiver fully integrated on a single semiconductor chip. The receiver portion is a double-conversion superheterodyne type, and shares the same intermediate and local oscillator frequencies with a two-stage up-conversion transmitter. Two on-chip synthesizers that each include a voltage-controlled oscillator and phase-locked loop can be operated independently for each conversion stage, or operated in offset mode. External reference frequencies can be injected for voltage-controlled oscillator and phase-locked loop testing, chip characterization, and automatic compensation modeling. Each mobile and base unit can be outfitted with transmit/receive antenna transfer switches, RF-power amplifiers, and low-noise receiver amplifiers to increase operating range.
摘要翻译： 无线计算机数据网络包括使用IEEE-802.11a标准与互联网连接的基站进行自组织数据连接的若干未受控移动单元。 每个单元包括完全集成在单个半导体芯片上的无线电收发器。 接收器部分是双转换超外差类型，并且与两级上变频发射器共享相同的中间和本地振荡器频率。 每个包括压控振荡器和锁相环的两个片上合成器可以针对每个转换级独立运行，或者以偏移模式运行。 外部参考频率可以注入压控振荡器和锁相环测试，芯片表征和自动补偿建模。 每个移动和基本单元可以配备发射/接收天线转换开关，RF功率放大器和低噪声接收放大器，以提高工作范围。
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3.发明申请Wireless computer network inluding a mobile appliance containing a single chip transceiver 有权包括单芯片收发器的移动设备的无线计算机网络公开(公告)号：US20050237924A1
公开(公告)日：2005-10-27
申请号：US11168011
申请日：2005-06-27
申请人： Neil Weste , Andrew Adams , Philip Ryan , John O'Sullivan , David Skellern , Richard Keaney
发明人： Neil Weste , Andrew Adams , Philip Ryan , John O'Sullivan , David Skellern , Richard Keaney
摘要： A wireless computer data network includes several untethered mobile units that make ad-hoc data connections with an Internet-connected base station using the IEEE-802.11a standard. Each unit includes a radio transceiver fully integrated on a single semiconductor chip. The receiver portion is a double-conversion superheterodyne type, and shares the same intermediate and local oscillator frequencies with a two-stage up-conversion transmitter. Two on-chip synthesizers that each include a voltage-controlled oscillator and phase-locked loop can be operated independently for each conversion stage, or operated in offset mode. External reference frequencies can be injected for voltage-controlled oscillator and phase-locked loop testing, chip characterization, and automatic compensation modeling. Each mobile and base unit can be outfitted with transmit/receive antenna transfer switches, RF-power amplifiers, and low-noise receiver amplifiers to increase operating range.
摘要翻译： 无线计算机数据网络包括使用IEEE-802.11a标准与互联网连接的基站进行自组织数据连接的若干未受控移动单元。 每个单元包括完全集成在单个半导体芯片上的无线电收发器。 接收器部分是双转换超外差类型，并且与两级上变频发射器共享相同的中间和本地振荡器频率。 每个包括压控振荡器和锁相环的两个片上合成器可以针对每个转换级独立运行，或者以偏移模式运行。 外部参考频率可以注入压控振荡器和锁相环测试，芯片表征和自动补偿建模。 每个移动和基本单元可以配备发射/接收天线转换开关，RF功率放大器和低噪声接收放大器，以提高工作范围。
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4.发明授权Wireless computer network including a mobile appliance containing a single chip transceiver 有权无线计算机网络包括包含单芯片收发器的移动设备公开(公告)号：US07164651B2
公开(公告)日：2007-01-16
申请号：US11380165
申请日：2006-04-25
申请人： Neil Weste , Andrew Adams , Philip Ryan , John O'Sullivan , David J. Skellern , Richard Keaney
发明人： Neil Weste , Andrew Adams , Philip Ryan , John O'Sullivan , David J. Skellern , Richard Keaney
摘要： A wireless computer data network includes several untethered mobile units that make ad-hoc data connections with an Internet-connected base station using the IEEE-802.11a standard. Each unit includes a radio transceiver fully integrated on a single semiconductor chip. The receiver portion is a double-conversion superheterodyne type, and shares the same intermediate and local oscillator frequencies with a two-stage up-conversion transmitter. Two on-chip synthesizers that each include a voltage-controlled oscillator and phase-locked loop can be operated independently for each conversion stage, or operated in offset mode. External reference frequencies can be injected for voltage-controlled oscillator and phase-locked loop testing, chip characterization, and automatic compensation modeling. Each mobile and base unit can be outfitted with transmit/receive antenna transfer switches, RF-power amplifiers, and low-noise receiver amplifiers to increase operating range.
摘要翻译： 无线计算机数据网络包括使用IEEE-802.11a标准与互联网连接的基站进行自组织数据连接的若干未受控移动单元。 每个单元包括完全集成在单个半导体芯片上的无线电收发器。 接收器部分是双转换超外差类型，并且与两级上变频发射器共享相同的中间和本地振荡器频率。 每个包括压控振荡器和锁相环的两个片上合成器可以针对每个转换级独立运行，或者以偏移模式运行。 外部参考频率可以注入压控振荡器和锁相环测试，芯片表征和自动补偿建模。 每个移动和基本单元可以配备发射/接收天线转换开关，RF功率放大器和低噪声接收放大器，以提高工作范围。
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5.发明授权Wireless computer network including a mobile appliance containing a single chip transceiver 有权无线计算机网络包括包含单芯片收发器的移动设备公开(公告)号：US07061855B2
公开(公告)日：2006-06-13
申请号：US11168011
申请日：2005-06-27
申请人： Neil Weste , Andrew Adams , Philip Ryan , John O'Sullivan , David J. Skellern , Richard Keaney
发明人： Neil Weste , Andrew Adams , Philip Ryan , John O'Sullivan , David J. Skellern , Richard Keaney
摘要： A wireless computer data network includes several untethered mobile units that make ad-hoc data connections with an Internet-connected base station using the IEEE-802.11a standard. Each unit includes a radio transceiver fully integrated on a single semiconductor chip. The receiver portion is a double-conversion superheterodyne type, and shares the same intermediate and local oscillator frequencies with a two-stage up-conversion transmitter. Two on-chip synthesizers that each include a voltage-controlled oscillator and phase-locked loop can be operated independently for each conversion stage, or operated in offset mode. External reference frequencies can be injected for voltage-controlled oscillator and phase-locked loop testing, chip characterization, and automatic compensation modeling. Each mobile and base unit can be outfitted with transmit/receive antenna transfer switches, RF-power amplifiers, and low-noise receiver amplifiers to increase operating range.
摘要翻译： 无线计算机数据网络包括使用IEEE-802.11a标准与互联网连接的基站进行自组织数据连接的若干未受控移动单元。 每个单元包括完全集成在单个半导体芯片上的无线电收发器。 接收器部分是双转换超外差类型，并且与两级上变频发射器共享相同的中间和本地振荡器频率。 每个包括压控振荡器和锁相环的两个片上合成器可以针对每个转换级独立运行，或者以偏移模式运行。 外部参考频率可以注入压控振荡器和锁相环测试，芯片表征和自动补偿建模。 每个移动和基本单元可以配备发射/接收天线转换开关，RF功率放大器和低噪声接收放大器，以提高工作范围。
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6.发明授权Wireless computer network including a mobile appliance containing a single chip transceiver 有权无线计算机网络包括包含单芯片收发器的移动设备公开(公告)号：US06944121B1
公开(公告)日：2005-09-13
申请号：US09877402
申请日：2001-06-08
申请人： Neil Weste , Andrew Adams , Philip Ryan , John O'Sullivan , David J. Skellern , Richard Keaney
发明人： Neil Weste , Andrew Adams , Philip Ryan , John O'Sullivan , David J. Skellern , Richard Keaney
摘要： A wireless computer data network includes several untethered mobile units that make ad-hoc data connections with an Internet-connected base station using the IEEE-802.11a standard. Each unit includes a radio transceiver fully integrated on a single semiconductor chip. The receiver portion is a double-conversion superheterodyne type, and shares the same intermediate and local oscillator frequencies with a two-stage up-conversion transmitter. Two on-chip synthesizers that each include a voltage-controlled oscillator and phase-locked loop can be operated independently for each conversion stage, or operated in offset mode. External reference frequencies can be injected for voltage-controlled oscillator and phase-locked loop testing, chip characterization, and automatic compensation modeling. Each mobile and base unit can be outfitted with transmit/receive antenna transfer switches, RF-power amplifiers, and low-noise receiver amplifiers to increase operating range.
摘要翻译： 无线计算机数据网络包括使用IEEE-802.11a标准与互联网连接的基站进行自组织数据连接的若干未受控移动单元。 每个单元包括完全集成在单个半导体芯片上的无线电收发器。 接收器部分是双转换超外差类型，并且与两级上变频发射器共享相同的中间和本地振荡器频率。 每个包括压控振荡器和锁相环的两个片上合成器可以针对每个转换级独立运行，或者以偏移模式运行。 外部参考频率可以注入压控振荡器和锁相环测试，芯片表征和自动补偿建模。 每个移动和基本单元可以配备发射/接收天线转换开关，RF功率放大器和低噪声接收放大器，以提高工作范围。
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7.发明申请AUTOMATIC GAIN CONTROL AND LOW POWER START-OF-PACKET DETECTION FOR A WIRELESS LAN RECEIVER 有权无线局域网接收机的自动增益控制和低功耗起动分组检测公开(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
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。
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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。
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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
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。
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公开(公告)号：US20060125694A1
公开(公告)日：2006-06-15
申请号：US11194116
申请日：2005-07-30
IPC分类号： G01S3/02
CPC分类号： C07D263/58 , C07D265/36 , C07D413/04 , C07D413/06 , C07D413/10 , C07D413/14 , C07D417/04 , C07D417/14 , G01S5/0263 , G01S19/48
摘要： A method of determining a geographical location of an asset tracking device, includes searching, by the asset tracking device, for available location determination schemes at the geographical location, selecting one of the available location determination schemes, and determining coordinates of the geographical location using the selected location determination scheme. Some embodiments also include making a decision based, at least in part, upon the geographical location coordinates determined by using the selected location determination scheme. Some embodiments include transmitting a location message, the location message including the coordinates of the geographical location and an indication as to the selected location determination scheme.
摘要翻译： 一种确定资产跟踪装置的地理位置的方法，包括由资产跟踪装置搜索地理位置处的可用位置确定方案，选择可用位置确定方案之一，以及使用该方法确定地理位置的坐标 选定位置确定方案。 一些实施例还包括至少部分地基于通过使用所选择的位置确定方案确定的地理位置坐标进行决定。 一些实施例包括发送位置消息，包括地理位置的坐标的位置消息和关于所选择的位置确定方案的指示。
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