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公开(公告)号：US08514057B2
公开(公告)日：2013-08-20
申请号：US12947579
申请日：2010-11-16
Applicant: Subburajan Ponnuswamy
Inventor： Subburajan Ponnuswamy
IPC: G08B5/22
Abstract: Determining the location of a wireless device to be located (DTL) by three or more locating devices (LDs). LDs operating at known locations estimate the distance to the DTL by sending wireless frames to the DTL and varying frame parameters such as transmit power and data rate, searching for the boundary at which the frame is or is not received and ACKd by the DTL. For a given set of frame parameters, the SNR required to be successfully received at the DTL is known. Given that the configuration of the LD is known, the EIRP of the DL is also known. Estimating the noise floor at the DTL, and using the SNR required to successfully receive the frame at the DTL and the EIRP at the LD transmitting the frame, the path loss can be calculated. From the path loss and operating frequency, a distance estimate is calculated. EIRP of the DTL is not and need not be known. Distance estimates from at least three LDs at known locations allow a location for the DTL to be calculated by a location engine (LE). Distance estimates from more than three LDs allow for an overdetermined solution. Distance estimates derived in this manner may be combined with distance estimates calculated using other approaches, such as measuring signal strengths, or TOA/TDOA measurements. The LE process may reside on a central controller supporting the LDs, on one of the LDs, or on any suitable device with network access.
Abstract translation: 通过三个或多个定位设备（LD）确定要定位的无线设备（DTL）的位置。 在已知位置操作的LD通过向DTL发送无线帧来估计到DTL的距离，并且改变帧参数，例如发射功率和数据速率，搜索帧被接收或未被接收的边界，并由DTL进行ACKd。 对于给定的一组帧参数，已知在DTL处被成功接收的SNR需要知道。 鉴于LD的配置是已知的，DL的EIRP也是已知的。 估计在DTL处的本底噪声，并且使用在DTL处成功接收帧所需的SNR和在发送帧的LD处的EIRP，可以计算路径损耗。 从路径损耗和工作频率来计算距离估计。 DTL的EIRP不是也不需要知道的。 在已知位置处的至少三个LD的距离估计允许由位置引擎（LE）计算DTL的位置。 超过三个LD的距离估计允许一个超定的解决方案。 以这种方式导出的距离估计可以与使用其他方法计算的距离估计值相结合，例如测量信号强度或TOA / TDOA测量。 LE过程可以驻留在支持LD的中央控制器上，在其中一个LD上，或者在具有网络访问的任何合适的设备上。
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公开(公告)号：US20120281785A1
公开(公告)日：2012-11-08
申请号：US13545851
申请日：2012-07-10
Applicant: Subburajan Ponnuswamy
Inventor： Subburajan Ponnuswamy
CPC classification number: H04W52/42 , H04B7/0408 , H04W52/322
Abstract: Multi-pattern transmission of frames. The method of operations comprises transmitting a first portion of a frame using a first radiation pattern. The frame comprises one or more preambles and a single data portion associated with the one or more preambles. Thereafter, an operation is conducted to switch the radiation pattern from the first radiation pattern, used to produce the first portion of the frame, to a second radiation pattern. A second portion of the same frame is produced using the second radiation pattern.
Abstract translation: 帧的多模式传输。 操作方法包括使用第一辐射图案发送帧的第一部分。 帧包括一个或多个前导码和与一个或多个前同步码相关联的单个数据部分。 此后，进行操作以将来自用于产生框架的第一部分的第一辐射图案的辐射图案切换到第二辐射图案。 使用第二辐射图来产生相同帧的第二部分。
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公开(公告)号：US20120008514A1
公开(公告)日：2012-01-12
申请号：US13179057
申请日：2011-07-08
Applicant: Subburajan Ponnuswamy
Inventor： Subburajan Ponnuswamy
Abstract: A combination and correlation of data from multiple sensors in a wireless digital network is described. Sensors such as spectrum monitors, access points, and wireless client devices provide spectrum data to one or more central stations connected to the network. Spectrum data from multiple sensors is combined and correlated to provide insight into network operation such as spectrum maps, detection-range maps, and for network diagnostics. Sensors providing spectrum data may be synchronized. Correlating spectrum data from synchronized sensors allows more accurate location of sources such as interferers. The known EIRP of certain wireless devices may be used to improve location estimates, and these devices may be used as calibrations sources for sensors in the wireless network.
Abstract translation: 描述了在无线数字网络中来自多个传感器的数据的组合和相关性。 诸如频谱监视器，接入点和无线客户端设备的传感器向连接到网络的一个或多个中心站提供频谱数据。 来自多个传感器的频谱数据被组合和相关，以提供对网络操作的洞察，例如频谱图，检测范围图和网络诊断。 提供频谱数据的传感器可以同步。 来自同步传感器的相关频谱数据可以更准确地定位源，如干扰源。 可以使用某些无线设备的已知EIRP来改善位置估计，并且这些设备可以用作无线网络中的传感器的校准源。
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Patent Agency Ranking
公开(公告)号：US20110243020A1
公开(公告)日：2011-10-06
申请号：US13080539
申请日：2011-04-05
Applicant: Subburajan Ponnuswamy
Inventor： Subburajan Ponnuswamy
IPC: H04L12/26
CPC classification number: H04W24/08 , H04L41/22 , H04L43/08 , H04W24/10 , H04W72/00 , H04W72/0446 , H04W72/082 , H04W84/12 , H04W88/10
Abstract: Methods of calculating and displaying quality metrics on a wireless digital network such as a network using IEEE 802.11 Wi-Fi standards. The quality metric calculation assigns weights only to factors which are observed above a threshold, combining multiple factors into a scalar result. The quality metric is derived from the weighted sum of two or more parameters such as: noise floor offset, channel busy indication, adjacent and overlapping channel interference, interferer duty-cycle, frame retry-rate, PHY error rate and CRC error rate. Quality spectrograms may be used to display calculated quality metrics across a channel, channel range, or frequency band, plotting calculated quality metric versus frequency or channel range over a configurable time frame. Using known locations of radios, quality ranges are mapped onto visual representations such as contour lines, shading density, or color codes, and overlayed for example over floor plans or other site representations.
Abstract translation: 在诸如使用IEEE 802.11 Wi-Fi标准的网络的无线数字网络上计算和显示质量度量的方法。 质量度量计算仅将权重分配给在阈值以上观察到的因素，将多个因子组合成标量结果。 质量度量来自两个或多个参数的加权和，例如：噪声本底偏移，信道忙指示，相邻和重叠信道干扰，干扰源占空比，帧重试率，PHY错误率和CRC错误率。 质量谱图可用于在通道，通道范围或频带上显示计算的质量度量，在可配置的时间范围内绘制计算的质量度量与频率或通道范围。 使用无线电的已知位置，质量范围被映射到视觉表示，例如轮廓线，阴影密度或颜色代码，并且例如覆盖在平面图或其他站点表示上。
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公开(公告)号：US20110188544A1
公开(公告)日：2011-08-04
申请号：US13016458
申请日：2011-01-28
Applicant: Subburajan Ponnuswamy
Inventor： Subburajan Ponnuswamy
Abstract: Interference classification with minimal or incomplete information. Receivers in access points and in other network devices on a wireless digital network may be switched to a spectrum monitor mode in which they provide amplitude-versus-frequency information for a chosen part of the spectrum. This may be performed by performing a FFT or similar transform on the signals from the receiver. Receivers are calibrated with known interference sources in controlled environments to determine peaks, pulse frequency, bandwidth, and other identifying parameters of the interference source in best and worst case conditions. These calibrated values are used for matching interference signatures. Calibration is also performed using partial signatures collected over a short period in the order of microseconds. These partial signals may be used to detect interferers while scanning. Another aspect of the invention is to record the variation of noise floor in the presence of interference sources. Multiple interference sources may be detected. While data collection is performed in one or more APs, classification may be performed in theAP or on other systems associated with the network collecting and processing spectrum information from one or more APs.
Abstract translation: 干扰分类与最少或不完整的信息。 接入点和无线数字网络上的其他网络设备中的接收机可以被切换到频谱监视器模式，在频谱监视器模式中，它们为所选择的频谱部分提供幅度 - 频率信息。 这可以通过对来自接收机的信号执行FFT或类似的变换来执行。 接收机在受控环境中用已知干扰源进行校准，以便在最佳和最坏情况下确定干扰源的峰值，脉冲频率，带宽和其他识别参数。 这些校准值用于匹配干扰特征。 校准也使用在几个微秒级的短时间内收集的部分签名进行。 这些部分信号可以用于在扫描时检测干扰源。 本发明的另一方面是在存在干扰源的情况下记录本底噪声的变化。 可以检测多个干扰源。 虽然在一个或多个AP中执行数据收集，但是可以在AP中或与网络相关联的其他系统上执行分类，从一个或多个AP收集和处理频谱信息。
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公开(公告)号：US20080227401A1
公开(公告)日：2008-09-18
申请号：US12109474
申请日：2008-04-25
Applicant: Shimon B. Scherzer , Patrick A. Worfolk , Armin D. Haken , Ronen Vainish , Subburajan Ponnuswamy
Inventor： Shimon B. Scherzer , Patrick A. Worfolk , Armin D. Haken , Ronen Vainish , Subburajan Ponnuswamy
IPC: H04B15/00
Abstract: Disclosed are systems and methods which provide interference mitigation by making alternative resources available within areas served by wireless communication links. Embodiments provide multiple channel availability in establishing wireless communication links to facilitate interference mitigation. Time domain techniques, spatial processing techniques, and/or frequency domain techniques may be implemented for spectrum management. Embodiments provide wireless base station configurations in which all or a plurality of base station sectors use a same frequency channel and/or in which each sector or a plurality of sectors use all frequency channels. Multi-channel strategies may be implemented such as to provide dynamic selection of a “best” frequency channel, to provide transmission of identical data on multiple channels for combining/selection at the receiver, and/or to provide for dividing the data for transmission on multiple channels.
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公开(公告)号：US07366202B2
公开(公告)日：2008-04-29
申请号：US10730649
申请日：2003-12-08
Applicant: Shimon B. Scherzer , Patrick A. Worfolk , Armin D. Haken , Ronen Vainish , Subburajan Ponnuswamy
Inventor： Shimon B. Scherzer , Patrick A. Worfolk , Armin D. Haken , Ronen Vainish , Subburajan Ponnuswamy
IPC: H04J1/00
Abstract: Disclosed are systems and methods which provide interference mitigation by making alternative resources available within areas served by wireless communication links. Embodiments provide multiple channel availability in establishing wireless communication links to facilitate interference mitigation. Time domain techniques, spatial processing techniques, and/or frequency domain techniques may be implemented for spectrum management. Embodiments provide wireless base station configurations in which all or a plurality of base station sectors use a same frequency channel and/or in which each sector or a plurality of sectors use all frequency channels. Multi-channel strategies may be implemented such as to provide dynamic selection of a “best” frequency channel, to provide transmission of identical data on multiple channels for combining/selection at the receiver, and/or to provide for dividing the data for transmission on multiple channels.
Abstract translation: 公开的是通过在由无线通信链路服务的区域内提供替代资源来提供干扰减轻的系统和方法。 实施例在建立无线通信链路以便促进干扰减轻时提供多信道可用性。 时域技术，空间处理技术和/或频域技术可以被实现用于频谱管理。 实施例提供无线基站配置，其中全部或多个基站扇区使用相同的频道和/或其中每个扇区或多个扇区使用所有频率信道。 可以实现多信道策略，例如提供“最佳”频率信道的动态选择，以在多个信道上提供相同数据的传输，用于在接收机处进行组合/选择，和/或提供将数据划分到 多个频道
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公开(公告)号：US20050122999A1
公开(公告)日：2005-06-09
申请号：US10730649
申请日：2003-12-08
Applicant: Shimon Scherzer , Patrick Worfolk , Armin Haken , Ronen Vainish , Subburajan Ponnuswamy
Inventor： Shimon Scherzer , Patrick Worfolk , Armin Haken , Ronen Vainish , Subburajan Ponnuswamy
Abstract: Disclosed are systems and methods which provide interference mitigation by making alternative resources available within areas served by wireless communication links. Embodiments provide multiple channel availability in establishing wireless communication links to facilitate interference mitigation. Time domain techniques, spatial processing techniques, and/or frequency domain techniques may be implemented for spectrum management. Embodiments provide wireless base station configurations in which all or a plurality of base station sectors use a same frequency channel and/or in which each sector or a plurality of sectors use all frequency channels. Multi-channel strategies may be implemented such as to provide dynamic selection of a “best” frequency channel, to provide transmission of identical data on multiple channels for combining/selection at the receiver, and/or to provide for dividing the data for transmission on multiple channels.
Abstract translation: 公开的是通过在由无线通信链路服务的区域内提供替代资源来提供干扰减轻的系统和方法。 实施例在建立无线通信链路以便促进干扰减轻时提供多信道可用性。 时域技术，空间处理技术和/或频域技术可以被实现用于频谱管理。 实施例提供无线基站配置，其中全部或多个基站扇区使用相同的频道和/或其中每个扇区或多个扇区使用所有频率信道。 可以实现多信道策略，例如提供“最佳”频率信道的动态选择，以在多个信道上提供相同数据的传输，用于在接收机处进行组合/选择，和/或提供将数据划分到 多个频道
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