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    Early detection of false start-of-packet triggers in a wireless network node
    1.
    发明授权
    Early detection of false start-of-packet triggers in a wireless network node 失效
    早期检测无线网络节点中的错误启动包触发器

    公开(公告)号：US07062703B1

    公开(公告)日：2006-06-13

    申请号：US10629383

    申请日：2003-07-28

    申请人： Richard A. Keaney ,  John D. O'Sullivan ,  Brian Hart ,  Philip J. Ryan ,  Kurt A. Lumbatis ,  Kevin C. H. Wong

    发明人： Richard A. Keaney ,  John D. O'Sullivan ,  Brian Hart ,  Philip J. Ryan ,  Kurt A. Lumbatis ,  Kevin C. H. Wong

    IPC分类号： H04L1/00 ,  H04L1/20

    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。

    Early detection of false start-of-packet triggers in a wireless network node
    2.
    发明授权
    Early detection of false start-of-packet triggers in a wireless network node 有权
    早期检测无线网络节点中的错误启动包触发器

    公开(公告)号：US07849391B2

    公开(公告)日：2010-12-07

    申请号：US12175067

    申请日：2008-07-17

    申请人： Richard A. Keaney ,  John D. O'Sullivan ,  Brian Hart ,  Philip J. Ryan ,  Kurt A. Lumbatis ,  Kevin C. H. Wong

    发明人： Richard A. Keaney ,  John D. O'Sullivan ,  Brian Hart ,  Philip J. Ryan ,  Kurt A. Lumbatis ,  Kevin C. H. Wong

    IPC分类号： H04L1/20 ,  H03M13/09

    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。

    EARLY DETECTION OF FALSE START-OF-PACKET TRIGGERS IN A WIRELESS NETWORK NODE
    3.
    发明申请
    EARLY DETECTION OF FALSE START-OF-PACKET TRIGGERS IN A WIRELESS NETWORK NODE 有权
    早期检测无线网络节点中的假启动包启动器

    公开(公告)号：US20080273536A1

    公开(公告)日：2008-11-06

    申请号：US12175067

    申请日：2008-07-17

    申请人： Richard A. Keaney ,  John D. O'Sullivan ,  Brian Hart ,  Philip J. Ryan ,  Kurt A. Lumbatis ,  Kevin C. H. Wong

    发明人： Richard A. Keaney ,  John D. O'Sullivan ,  Brian Hart ,  Philip J. Ryan ,  Kurt A. Lumbatis ,  Kevin C. H. Wong

    IPC分类号： H04L12/56

    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。

    Early detection of false start-of-packet triggers in a wireless network node
    4.
    发明授权
    Early detection of false start-of-packet triggers in a wireless network node 有权
    早期检测无线网络节点中的错误启动包触发器

    公开(公告)号：US07415661B2

    公开(公告)日：2008-08-19

    申请号：US11380152

    申请日：2006-04-25

    申请人： Richard A. Keaney ,  John D. O'Sullivan ,  Brian Hart ,  Philip J. Ryan ,  Kurt A. Lumbatis ,  Kevin C. H. Wong

    发明人： Richard A. Keaney ,  John D. O'Sullivan ,  Brian Hart ,  Philip J. Ryan ,  Kurt A. Lumbatis ,  Kevin C. H. Wong

    IPC分类号： H03M13/09

    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。

    Automatic gain control and low power start-of-packet detection for a wireless LAN receiver
    5.
    发明授权
    Automatic gain control and low power start-of-packet detection for a wireless LAN receiver 有权
    无线LAN接收机的自动增益控制和低功率启动包检测

    公开(公告)号：US07304969B2

    公开(公告)日：2007-12-04

    申请号：US11557728

    申请日：2006-11-08

    申请人： Philip J. Ryan ,  Andrew R. Adams ,  John D. O'Sullivan ,  Uri Parker ,  Brian Hart ,  Grzegorz B. Zyner

    发明人： Philip J. Ryan ,  Andrew R. Adams ,  John D. O'Sullivan ,  Uri Parker ,  Brian Hart ,  Grzegorz B. Zyner

    IPC分类号： H04Q7/00

    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。

    Automatic gain control and low power start-of-packet detection for a wireless LAN receiver
    6.
    发明授权
    Automatic gain control and low power start-of-packet detection for a wireless LAN receiver 有权
    无线LAN接收机的自动增益控制和低功率启动包检测

    公开(公告)号：US07151759B1

    公开(公告)日：2006-12-19

    申请号：US10095668

    申请日：2002-03-08

    申请人： Philip J. Ryan ,  Andrew R. Adams ,  John D. O'Sullivan ,  Uri Parker ,  Brian Hart ,  Grzegorz B. Zyner

    发明人： Philip J. Ryan ,  Andrew R. Adams ,  John D. O'Sullivan ,  Uri Parker ,  Brian Hart ,  Grzegorz B. Zyner

    IPC分类号： H04Q7/00

    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。

    Channel estimation in a multicarrier radio receiver
    9.
    发明授权
    Channel estimation in a multicarrier radio receiver 有权
    多载波无线电接收机中的信道估计

    公开(公告)号：US07161896B1

    公开(公告)日：2007-01-09

    申请号：US10217117

    申请日：2002-08-12

    申请人： Brian Hart ,  John D O'Sullivan

    发明人： Brian Hart ,  John D O'Sullivan

    IPC分类号： H04K1/10 ,  H04L27/28

    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 the particular subcarrier's one or more immediate neighbors to take advantage of correlation that may exist between the particular subcarrier's channel and the channels of that subcarrier's one or more immediate neighbors. 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的一个或多个立即邻居的信道估计的贡献，以利用可能存在于特定子载波的信道和该子载波的一个或多个直接邻居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。

    Channel estimation in a multicarrier radio receiver
    10.
    发明授权
    Channel estimation in a multicarrier radio receiver 有权
    多载波无线电接收机中的信道估计

    公开(公告)号：US07773499B2

    公开(公告)日：2010-08-10

    申请号：US11565745

    申请日：2006-12-01

    申请人： Brian Hart ,  John D. O'Sullivan

    发明人： Brian Hart ,  John D. O'Sullivan

    IPC分类号： H04B1/10 ,  H04L27/28 ,  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。