公开(公告)号：US08457554B2

公开(公告)日：2013-06-04

申请号：US11939171

申请日：2007-11-13

申请人： Steven Deane Hall ,  Brima Babatunde Ibrahim ,  Hea Joung Kim ,  Yuan Zhuang ,  Langford Wasada ,  Bojko Marholev ,  Shawn Ding ,  Latha Caliaperoumal ,  Satya Prasad Srinivas

发明人： Steven Deane Hall ,  Brima Babatunde Ibrahim ,  Hea Joung Kim ,  Yuan Zhuang ,  Langford Wasada ,  Bojko Marholev ,  Shawn Ding ,  Latha Caliaperoumal ,  Satya Prasad Srinivas

IPC分类号： H04B7/00

CPC分类号： H04W8/005 ,  H04W16/14 ,  H04W48/16

摘要： Methods and systems for wireless communication are disclosed and may include controlling one or more scans of a received signal detection frequency across a frequency range and storing a magnitude of the received signal at each frequency where the magnitude exceeds a threshold level. A type of one or more signals in the received signal may be determined based on a bandwidth of the signals. A Bluetooth page/inquiry scan may be initiated if the determined type is a page/inquiry signal, and scans may be continued if the determined type may not be a page/inquiry signal. The scans may be repeated on a periodic basis and may be controlled utilizing a voltage controlled oscillator. Each of the scans may include a plurality of discrete frequency steps or a continuous frequency ramp. The controlling may include a start frequency, an end frequency and a frequency step size for the scans.

摘要翻译： 公开了用于无线通信的方法和系统，并且可以包括控制跨越频率范围的接收信号检测频率的一次或多次扫描并且在幅度超过阈值水平的每个频率处存储接收信号的幅度。 可以基于信号的带宽来确定接收信号中的一种或多种信号的类型。 如果确定的类型是页面/查询信号，则可以启动蓝牙页面/查询扫描，并且如果所确定的类型可能不是页面/查询信号，则可以继续扫描。 可以周期性地重复扫描，并且可以利用压控振荡器来控制扫描。 每个扫描可以包括多个离散频率步长或连续频率斜坡。 控制可以包括扫描的起始频率，结束频率和频率步长。

公开(公告)号：US20090124200A1

公开(公告)日：2009-05-14

申请号：US11939171

申请日：2007-11-13

申请人： Steven Deane Hall ,  Brima Babatunde Ibrahim ,  Hea Joung Kim ,  Yuan Zhuang ,  Langford Wasada ,  Bojko Marholev ,  Shawn Ding ,  Latha Caliaperoumal ,  Satya Prasad Srinivas

发明人： Steven Deane Hall ,  Brima Babatunde Ibrahim ,  Hea Joung Kim ,  Yuan Zhuang ,  Langford Wasada ,  Bojko Marholev ,  Shawn Ding ,  Latha Caliaperoumal ,  Satya Prasad Srinivas

IPC分类号： H04B7/00

CPC分类号： H04W8/005 ,  H04W16/14 ,  H04W48/16

摘要： Methods and systems for wireless communication are disclosed and may include controlling one or more scans of a received signal detection frequency across a frequency range and storing a magnitude of the received signal at each frequency where the magnitude exceeds a threshold level. A type of one or more signals in the received signal may be determined based on a bandwidth of the signals. A Bluetooth page/inquiry scan may be initiated if the determined type is a page/inquiry signal, and scans may be continued if the determined type may not be a page/inquiry signal. The scans may be repeated on a periodic basis and may be controlled utilizing a voltage controlled oscillator. Each of the scans may include a plurality of discrete frequency steps or a continuous frequency ramp. The controlling may include a start frequency, an end frequency and a frequency step size for the scans.

摘要翻译： 公开了用于无线通信的方法和系统，并且可以包括控制跨越频率范围的接收信号检测频率的一次或多次扫描并且在幅度超过阈值水平的每个频率处存储接收信号的幅度。 可以基于信号的带宽来确定接收信号中的一种或多种信号的类型。 如果确定的类型是页面/查询信号，则可以启动蓝牙页面/查询扫描，并且如果所确定的类型可能不是页面/查询信号，则可以继续扫描。 可以周期性地重复扫描，并且可以利用压控振荡器来控制扫描。 每个扫描可以包括多个离散频率步长或连续频率斜坡。 控制可以包括扫描的起始频率，结束频率和频率步长。

公开(公告)号：US20090022208A1

公开(公告)日：2009-01-22

申请号：US12017135

申请日：2008-01-21

申请人： Steven Deane Hall ,  Brima Ibrahim ,  Hea Joung Kim ,  Yuan Zhuang ,  Langford Wasada ,  Bojko Marholev ,  Shawn Ding ,  Latha Caliaperoumal ,  Satya Prasad Srinivas

发明人： Steven Deane Hall ,  Brima Ibrahim ,  Hea Joung Kim ,  Yuan Zhuang ,  Langford Wasada ,  Bojko Marholev ,  Shawn Ding ,  Latha Caliaperoumal ,  Satya Prasad Srinivas

IPC分类号： H04B1/00

CPC分类号： H04B1/034

摘要： Methods and systems for wireless communication are disclosed and may include sweeping a signal detection frequency one or more times across a plurality of steps in a frequency range. The measured signal strength at each step may be compared to a threshold, and a status may be stored, which may depend on the presence of a measured signal strength above threshold. The detection frequency may be swept utilizing a voltage controlled oscillator, which may be tuned via a control voltage and/or calibration capacitors. Steps may be skipped when a measured signal strength may be greater than the threshold, and may occur after multiple above threshold measurements. The steps may have variable frequency width, and the range may include the Bluetooth band from 2.40 GHz to 2.48 GHz. The frequency may be swept over a subset of the Bluetooth band, and may be swept on a periodic basis.

摘要翻译： 公开了用于无线通信的方法和系统，并且可以包括在频率范围内的多个步骤中扫描信号检测频率一次或多次。 可以将每个步骤处的测量信号强度与阈值进行比较，并且可以存储状态，其可以取决于高于阈值的测量信号强度的存在。 可以利用压控振荡器来扫描检测频率，该压控振荡器可以经由控制电压和/或校准电容器进行调谐。 当测量的信号强度可能大于阈值时，可以跳过步骤，并且可以在多次超过阈值测量之后发生。 这些步骤可以具有可变的频率宽度，并且该范围可以包括从2.40GHz到2.48GHz的蓝牙频带。 频率可以扫过蓝牙频带的子集，并且可以周期性地扫描。

公开(公告)号：US08190388B2

公开(公告)日：2012-05-29

申请号：US12606170

申请日：2009-10-26

申请人： Brima Babatunde Ibrahim ,  Steven Deane Hall

发明人： Brima Babatunde Ibrahim ,  Steven Deane Hall

IPC分类号： G01R23/00

CPC分类号： H04B1/713 ,  H04B1/715

摘要： Aspects of a method and system for detecting Bluetooth signals utilizing a wideband receiver are provided. In this regard, a portion of a frequency band may be scanned multiple times, where each scan comprises receiving signals present in the scanned portion of the frequency band. Based on results of a Fast Fourier Transform performed on the received signals, presence of one or more Bluetooth transmissions in the received signals may be detected. In instances that a Bluetooth transmission is detected, a type of the Bluetooth transmission may be determined based on a number of the scans in which the Bluetooth transmission was detected. In instances that a detected Bluetooth transmission is a page, a Bluetooth transceiver in the wireless communication device may be powered up and/or enter a page scanning mode. The scans may be performed by a wireless local area networking receiver within the wireless communication device.

摘要翻译： 提供了利用宽带接收机检测蓝牙信号的方法和系统的方面。 在这方面，频带的一部分可以被扫描多次，其中每个扫描包括存在于频带的扫描部分中的信号。 基于对接收到的信号执行的快速傅立叶变换的结果，可以检测在接收信号中存在一个或多个蓝牙传输。 在检测到蓝牙传输的情况下，可以基于检测到蓝牙传输的扫描的数量来确定蓝牙传输的类型。 在检测到的蓝牙传输是页面的情况下，无线通信设备中的蓝牙收发器可以被加电和/或进入页面扫描模式。 扫描可以由无线通信设备内的无线局域网接收机执行。

公开(公告)号：US20100048136A1

公开(公告)日：2010-02-25

申请号：US12606170

申请日：2009-10-26

申请人： Brima Babatunde Ibrahim ,  Steven Deane Hall

发明人： Brima Babatunde Ibrahim ,  Steven Deane Hall

IPC分类号： H04B7/00

CPC分类号： H04B1/713 ,  H04B1/715

摘要： Aspects of a method and system for detecting Bluetooth signals utilizing a wideband receiver are provided. In this regard, a portion of a frequency band may be scanned multiple times, where each scan comprises receiving signals present in the scanned portion of the frequency band. Based on results of a Fast Fourier Transform performed on the received signals, presence of one or more Bluetooth transmissions in the received signals may be detected. In instances that a Bluetooth transmission is detected, a type of the Bluetooth transmission may be determined based on a number of the scans in which the Bluetooth transmission was detected. In instances that a detected Bluetooth transmission is a page, a Bluetooth transceiver in the wireless communication device may be powered up and/or enter a page scanning mode. The scans may be performed by a wireless local area networking receiver within the wireless communication device.

摘要翻译： 提供了利用宽带接收机检测蓝牙信号的方法和系统的方面。 在这方面，频带的一部分可以被扫描多次，其中每个扫描包括存在于频带的扫描部分中的信号。 基于对接收到的信号执行的快速傅立叶变换的结果，可以检测接收信号中的一个或多个蓝牙传输的存在。 在检测到蓝牙传输的情况下，可以基于检测到蓝牙传输的扫描的数量来确定蓝牙传输的类型。 在检测到的蓝牙传输是页面的情况下，无线通信设备中的蓝牙收发器可以被加电和/或进入页面扫描模式。 扫描可以由无线通信设备内的无线局域网接收机执行。

公开(公告)号：US20090112492A1

公开(公告)日：2009-04-30

申请号：US11927853

申请日：2007-10-30

申请人： Brima Babatunde Ibrahim ,  Steven Deane Hall

发明人： Brima Babatunde Ibrahim ,  Steven Deane Hall

IPC分类号： G01R29/08

CPC分类号： H04B1/713 ,  H04B1/715

摘要： Aspects of a method and system for detecting Bluetooth signals utilizing a wideband receiver are provided. In this regard, a frequency band may be scanned by receiving signals on each of a plurality of sub-bands for an amount of time, the energy received in each band may be compared to a threshold, and whether each sub-band comprises a Bluetooth transmission may be determined based on a FFT. Additionally, the FFT may enable determining on which Bluetooth channel a detected transmission occurred. A FFT may be performed when energy detected in a sub-band is higher than a threshold. The sub-bands may each be a WLAN channel. A type of a detected Bluetooth transmission may be determined based on a number of scans in which the transmission is detected. Each sub-band may be received for less than or equal to 68 μs divided by the number of sub-bands.

摘要翻译： 提供了利用宽带接收机检测蓝牙信号的方法和系统的方面。 在这方面，可以通过在多个子带中的每一个上接收一段时间的信号来扫描频带，将每个频带中接收的能量与阈值进行比较，以及每个子带是否包括蓝牙 可以基于FFT来确定传输。 另外，FFT可以使得能够确定发生了检测到的传输的蓝牙信道。 当在子带中检测到的能量高于阈值时，可以执行FFT。 子带可以各自是WLAN信道。 可以基于检测到传输的扫描的数量来确定检测到的蓝牙传输的类型。 每个子带可以接收小于或等于68μ除以子带数。

公开(公告)号：US20090111496A1

公开(公告)日：2009-04-30

申请号：US11930446

申请日：2007-10-31

申请人： Brima Babatunde Ibrahim ,  Steven Deane Hall

发明人： Brima Babatunde Ibrahim ,  Steven Deane Hall

IPC分类号： H04Q7/20

CPC分类号： H04W72/085 ,  H04W72/06

摘要： Aspects of a method and system for classifying Bluetooth channels using a wideband receiver are provided. In this regard, FFT analysis may be utilized to detect signals/interference present in a sub-band of an ISM band and classify Bluetooth channels in that sub-band based on the detected signals. A co-located Bluetooth transceiver may utilize the classification to determine which Bluetooth channels comprise a best communication link for communicating via Bluetooth. In this regard, Bluetooth channels may be ranked in order of preference based on the classification. Preferred Bluetooth channels may provide more reliable Bluetooth communications. The ISM frequency band may be the 2.4 GHz ISM frequency band. The sub-bands may each comprise a WLAN channel. The Bluetooth channels may be classified based on strength, type, and/or a rate of recurrence of the detected signals. In addition to the FFT, a signal strength indicator may be utilized to detect signals/interference.

摘要翻译： 提供了使用宽带接收机对蓝牙信道进行分类的方法和系统的方面。 在这方面，可以使用FFT分析来检测存在于ISM频带的子带中的信号/干扰，并且基于检测到的信号对该子带中的蓝牙信道进行分类。 共同定位的蓝牙收发器可以利用分类来确定哪些蓝牙信道包括用于通过蓝牙进行通信的最佳通信链路。 在这方面，蓝牙信道可以基于分类的顺序排列。 优选的蓝牙通道可以提供更可靠的蓝牙通信。 ISM频段可以是2.4GHz ISM频带。 子带可以各自包括WLAN信道。 可以基于强度，类型和/或检测到的信号的再现速率对蓝牙信道进行分类。 除了FFT之外，还可以使用信号强度指示器来检测信号/干扰。

公开(公告)号：US06456950B1

公开(公告)日：2002-09-24

申请号：US09314596

申请日：1999-05-19

申请人： Hussein S. El-Ghoroury ,  Murat F. Karsi ,  Steven Deane Hall

发明人： Hussein S. El-Ghoroury ,  Murat F. Karsi ,  Steven Deane Hall

IPC分类号： G01R2300

CPC分类号： G01R23/14

摘要： The present invention is a method and apparatus to detect an instantaneous frequency of an input signal. A sampler samples the input signal to generate a sampled signal. A metric generator is coupled to the sampler to generate a metric signal based on the sampled signal. The metric signal has a magnitude proportional to the instantaneous frequency of the input signal. In another embodiment, the apparatus comprises a feedback circuit and a decimator. The feedback circuit generates a sequence signal from the input signal. The sequence signal represents a change of the instantaneous frequency of the input signal. The decimator is coupled to the feedback circuit to decimate the sequence signal to generate a frequency signal. The frequency signal providing the instantaneous frequency of the input signal.

摘要翻译： 本发明是检测输入信号的瞬时频率的方法和装置。 采样器采样输入信号以产生采样信号。 度量发生器耦合到采样器以基于采样信号产生度量信号。 度量信号具有与输入信号的瞬时频率成比例的幅度。 在另一个实施例中，该装置包括反馈电路和抽取器。 反馈电路从输入信号生成序列信号。 序列信号表示输入信号的瞬时频率的变化。 抽取器耦合到反馈电路以抽取序列信号以产生频率信号。 频率信号提供输入信号的瞬时频率。

公开(公告)号：US20130143488A1

公开(公告)日：2013-06-06

申请号：US13325675

申请日：2011-12-14

申请人： Philip Stewart ROYSTON ,  Steven Deane Hall ,  Brima Ibrahim

发明人： Philip Stewart ROYSTON ,  Steven Deane Hall ,  Brima Ibrahim

IPC分类号： H04B5/00 ,  H04W24/00

CPC分类号： H04B5/0075 ,  G06K7/10128 ,  G06K7/10237 ,  H04B5/0043

摘要： A near field communications (NFC) device is disclosed that detects a presence of another NFC capable device within its magnetic field. The NFC device observes signal metrics of an observed detection signal at various intervals. The NFC device determines a statistical relationship based upon at least two first signal metrics from among the signal metrics to determine an estimate of at least one second signal metric from among the signal metrics. The NFC device compares a difference between the estimate of the signal metric of the at least one second signal metric and the at least one second signal metric. The NFC capable device makes a first determination that another NFC device is present within its magnetic field when the difference indicates that the at least one second signal metric is non-linearly related to the at least two first signal metrics.

摘要翻译： 公开了近场通信（NFC）设备，其检测在其磁场内存在另一个NFC能力的设备。 NFC设备以各种间隔观察观察到的检测信号的信号度量。 NFC设备基于来自信号度量的至少两个第一信号度量来确定统计关系，以从信号度量中确定至少一个第二信号度量的估计。 NFC设备将至少一个第二信号度量的信号度量的估计与至少一个第二信号度量之间的差进行比较。 NFC能力设备首先确定当该差异指示至少一个第二信号度量与至少两个第一信号度量非线性相关时，另一个NFC设备存在于其磁场内。

公开(公告)号：US07640123B2

公开(公告)日：2009-12-29

申请号：US11927853

申请日：2007-10-30

申请人： Brima Ibrahim ,  Steven Deane Hall

发明人： Brima Ibrahim ,  Steven Deane Hall

IPC分类号： G01R23/16

CPC分类号： H04B1/713 ,  H04B1/715

摘要： Aspects of a method and system for detecting Bluetooth signals utilizing a wideband receiver are provided. In this regard, a frequency band may be scanned by receiving signals on each of a plurality of sub-bands for an amount of time, the energy received in each band may be compared to a threshold, and whether each sub-band comprises a Bluetooth transmission may be determined based on a FFT. Additionally, the FFT may enable determining on which Bluetooth channel a detected transmission occurred. A FFT may be performed when energy detected in a sub-band is higher than a threshold. The sub-bands may each be a WLAN channel. A type of a detected Bluetooth transmission may be determined based on a number of scans in which the transmission is detected. Each sub-band may be received for less than or equal to 68 μs divided by the number of sub-bands.

摘要翻译： 提供了利用宽带接收机检测蓝牙信号的方法和系统的方面。 在这方面，可以通过在多个子带中的每一个上接收一段时间的信号来扫描频带，将每个频带中接收的能量与阈值进行比较，以及每个子带是否包括蓝牙 可以基于FFT来确定传输。 另外，FFT可以使得能够确定发生了检测到的传输的蓝牙信道。 当在子带中检测到的能量高于阈值时，可以执行FFT。 子带可以各自是WLAN信道。 可以基于检测到传输的扫描的数量来确定检测到的蓝牙传输的类型。 每个子带可以接收小于或等于68μ除以子带数。