公开(公告)号：US08626056B2

公开(公告)日：2014-01-07

申请号：US12834342

申请日：2010-07-12

Applicant: Yong Jin Kim ,  Stephen J. Shellhammer ,  Vijayalakshmi R. Raveendran ,  Wenyi Zhang ,  Ahmed K. Sadek ,  Yu A. Wang

Inventor： Yong Jin Kim ,  Stephen J. Shellhammer ,  Vijayalakshmi R. Raveendran ,  Wenyi Zhang ,  Ahmed K. Sadek ,  Yu A. Wang

IPC: H04H20/71

CPC classification number: H04N21/43637 ,  G09G5/006 ,  H04L65/4076 ,  H04L65/80 ,  H04N21/4122

Abstract: Transmitting devices facilitate privacy protection of content broadcasted from the transmitting device to a receiving device without the need to modify the receiving device. A transmitting device may be adapted to acquire content, such as audio and/or video data, to be broadcasted by the transmitter for reception and use by a receiving device. A transmission range is selected to define a distance for broadcasting the content from the transmission device for reception and use by a receiving device. A frequency is also selected to be used for broadcasting the content. With the transmission range and frequency selected, the transmitting device may broadcast the content according to the selected transmission range and frequency.

Abstract translation: 传输设备促进从发送设备广播到接收设备的内容的隐私保护，而不需要修改接收设备。 发送设备可以适于获取要由发射机广播的内容，例如音频和/或视频数据，以便接收设备接收和使用。 选择传输范围以定义用于从发送设备广播内容的距离，以用于接收设备的接收和使用。 还选择用于广播内容的频率。 在选择了传输范围和频率的情况下，发射设备可以根据所选择的传输范围和频率来广播内容。

公开(公告)号：US20130195089A1

公开(公告)日：2013-08-01

申请号：US13362934

申请日：2012-01-31

Applicant: Rahul Tandra ,  Santosh P. Abraham ,  Stephen J. Shellhammer

Inventor： Rahul Tandra ,  Santosh P. Abraham ,  Stephen J. Shellhammer

IPC: H04W4/00 ,  H04W84/12

CPC classification number: H04W16/14 ,  H04W28/06 ,  H04W74/0816 ,  H04W88/10

Abstract: A method includes generating, at a low rate enabler (LRE) device, a packet including a preamble having a legacy portion and a super long range (SLR) portion. The legacy portion includes at least one bit to indicate a presence of the SLR portion to at least one SLR-compatible device. The method also includes transmitting the packet to a plurality of devices includes the at least one SLR-compatible device.

Abstract translation: 一种方法包括在低速率启动器（LRE）装置中生成包括具有传统部分和超长距离（SLR）部分的前同步码的分组。 遗留部分包括至少一个位以指示SLR部分到达至少一个SLR兼容设备的存在。 该方法还包括将分组发送到包括至少一个SLR兼容设备的多个设备。

公开(公告)号：US20130059614A1

公开(公告)日：2013-03-07

申请号：US13226101

申请日：2011-09-06

Applicant: Sreeram Kannan ,  Ahmed K. Sadek ,  Stephen J. Shellhammer ,  Saurabh Tavildar ,  Nilesh Khude

Inventor： Sreeram Kannan ,  Ahmed K. Sadek ,  Stephen J. Shellhammer ,  Saurabh Tavildar ,  Nilesh Khude

IPC: H04W72/02

CPC classification number: H04W72/06 ,  H04W8/005

Abstract: A decentralized approach to peer discovery channel selection is used in some embodiments. In some such embodiments, a mobile wireless terminal supporting a peer to peer signaling protocol, independently determines what channels to use for peer discovery without a central controller indicating the channel or channels to be used. Assuming channels are of a suitable quality, the channels having the best quality need not be identified, with channel selection being made on a predetermined channel ordering basis from those with suitable quality. Different wireless communications devices in the system use the same peer discovery channel selection process making it likely that the same channel or channels will tend to be picked to be used for peer discovery. Other embodiments are directed to implementing a centralized approach to peer discovery channel selection in which a central controller or base station selects channels to be used for peer discovery signaling.

Abstract translation: 在一些实施例中使用分布式对等体发现信道选择方法。 在一些这样的实施例中，支持对等信令协议的移动无线终端独立地确定用于对等体发现的哪些信道，而不指示要使用的信道或信道的中央控制器。 假设信道具有合适的质量，则不需要识别具有最佳质量的信道，其中信道选择是从具有适当质量的信道选择进行的。 系统中的不同的无线通信设备使用相同的对等体发现信道选择过程，使得可能相同的信道或信道将倾向于被选择用于对等体发现。 其他实施例涉及实现对等体发现信道选择的集中式方法，其中中央控制器或基站选择要用于对等体发现信令的信道。

公开(公告)号：US20110045781A1

公开(公告)日：2011-02-24

申请号：US12858334

申请日：2010-08-17

Applicant: Stephen J. Shellhammer ,  Ahmed K. Sadek ,  Wenyi Zhang

Inventor： Stephen J. Shellhammer ,  Ahmed K. Sadek ,  Wenyi Zhang

IPC: H04B17/00

CPC classification number: H04B17/0057 ,  H04B17/26 ,  H04B17/318 ,  H04B17/382

Abstract: In general, techniques are described for sensing wireless communications in television frequency bands, which may be implemented by a sensing device comprising a sensing unit, a power spectral density (PSD) estimation unit, a filter unit, a candidate selection unit, an analysis unit and a decision unit. The sensing unit senses a signal in the television frequencies bands. The PSD estimation unit calculates an estimate of a PSD for the sensed signal. The filter unit filters the estimated PSD. The candidate selection unit analyzes the filtered PSD to identify a candidate frequency representative of a potentially in use frequency. The analysis unit computes a test statistic for the candidate frequency. The decision unit compares the test statistic to a threshold to identify whether the candidate frequencies is actively in use by wireless communication devices.

Abstract translation: 通常，描述了用于感测电视频带中的无线通信的技术，其可以由包括感测单元，功率谱密度（PSD）估计单元，滤波器单元，候选选择单元，分析单元 和决策单位。 感测单元感测电视频带中的信号。 PSD估计单元计算感测信号的PSD的估计。 过滤器单元过滤估计的PSD。 候选选择单元分析经滤波的PSD以识别代表潜在使用频率的候选频率。 分析单元计算候选频率的测试统计量。 决策单元将测试统计量与阈值进行比较，以识别候选频率是否被无线通信设备主动使用。

公开(公告)号：US20110021167A1

公开(公告)日：2011-01-27

申请号：US12618533

申请日：2009-11-13

Applicant: Stephen J. Shellhammer

Inventor： Stephen J. Shellhammer

IPC: H04B17/00

CPC classification number: H04W16/14 ,  H04B7/0837 ,  H04B17/26 ,  H04B17/382 ,  H04W72/085

Abstract: Methods and apparatus for sensing features of a signal in a wireless communication system are disclosed. The disclosed methods and apparatus sense signal features by determining a number of spectral density estimates, where each estimate is derived based on reception of the signal by a respective antenna in a system with multiple sensing antennas. The spectral density estimates are then combined, and the signal features are sensed based on the combination of the spectral density estimates.

Abstract translation: 公开了用于感测无线通信系统中的信号特征的方法和装置。 所公开的方法和装置通过确定频谱密度估计的数量来感测信号特征，其中每个估计是基于在具有多个感测天线的系统中的相应天线的信号的接收而导出的。 然后组合频谱密度估计，并且基于频谱密度估计的组合来感测信号特征。

公开(公告)号：US20100105419A1

公开(公告)日：2010-04-29

申请号：US12553955

申请日：2009-09-03

Applicant: Yong Jin Kim ,  Lakshminath R. Dondeti ,  Stephen J. Shellhammer ,  Wenyi Zhang

Inventor： Yong Jin Kim ,  Lakshminath R. Dondeti ,  Stephen J. Shellhammer ,  Wenyi Zhang

IPC: H04B7/00

CPC classification number: H04W24/00 ,  H04W72/02 ,  H04W72/082 ,  H04W84/18

Abstract: A spatio-temporal random voting scheme is provided that incorporates location distribution, spatial randomness, and temporal randomness in the collection of information from a plurality of sensing devices within the cognitive network. The region is divided into a plurality of sectors, where each sector is a portion of the region. A subset of sectors is selected from the plurality of sectors in the region to provide spatial randomness. A device is randomly selected from each sector in the subset of sectors to provide additional spatial randomness to the information collection process. Temporal randomness may be introduced by randomly selecting a timeslot within a sensing window period in which devices are to scan a frequency spectrum band to determine if a signal energy above a threshold is detected. Sensing reports are then collected from the selected sensing devices and used to determine whether the frequency spectrum band is available or in use.

Abstract translation: 提供了一种时空随机投票方案，其包括来自认知网络内的多个感测装置的信息收集中的位置分布，空间随机性和时间随机性。 该区域被分成多个扇区，其中每个扇区是区域的一部分。 从区域中的多个扇区中选择扇区的子集以提供空间随机性。 从扇区子集中的每个扇区随机选择一个设备，以向信息收集过程提供额外的空间随机性。 可以通过在感测窗口周期内随机选择时隙来引入时间随机性，其中设备将扫描频谱带以确定是否检测到高于阈值的信号能量。 然后从所选择的感测装置收集感测报告，并用于确定频谱带是可用还是正在使用。

公开(公告)号：US20090143019A1

公开(公告)日：2009-06-04

申请号：US11969875

申请日：2008-01-04

Applicant: Stephen J. Shellhammer

Inventor： Stephen J. Shellhammer

IPC: H04B17/00

CPC classification number: H04K3/226 ,  H04B17/24 ,  H04B17/327 ,  H04W8/005 ,  H04W16/14

Abstract: Methods and apparatus for determining if a signal of interest, for example, a licensed signal having or exceeding a predetermined field strength, is present in a wireless spectrum and/or which facilitates such a determination are described. The signal of interest maybe, e.g., a television signal or a wireless microphone signal using licensed television spectrum. The predetermined field strength may be specified or by a government regulation or rule.

Abstract translation: 描述用于确定感兴趣信号（例如具有或超过预定场强的许可信号）是否存在于无线频谱中的方法和装置和/或有助于这种确定的方法和装置。 感兴趣的信号可以是例如使用许可的电视频谱的电视信号或无线麦克风信号。 预定的场强可以由政府规定或规则来规定。

公开(公告)号：US20080112467A1

公开(公告)日：2008-05-15

申请号：US11935911

申请日：2007-11-06

Applicant: Stephen J. Shellhammer

Inventor： Stephen J. Shellhammer

IPC: H04B1/69

CPC classification number: H04B1/46 ,  H04W4/18 ,  H04W24/00

Abstract: A method for detecting the presence of a transmission signal in a wireless spectrum channel. The frequency of a signal is converted from a first frequency to a second frequency. The signal with the second frequency is filtered to remove signals that are not within the band of the second frequency. An averaged periodogram of the signal is calculated. A value of the averaged periodogram is compared to a threshold. The presence of the transmission signal is detected, if the value of the averaged periodogram exceeds the threshold.

Abstract translation: 一种在无线频谱信道中检测发送信号的存在的方法。 信号的频率从第一频率转换为第二频率。 对具有第二频率的信号进行滤波以除去不在第二频率的频带内的信号。 计算信号的平均周期图。 将平均周期图的值与阈值进行比较。 如果平均周期图的值超过阈值，则检测到发送信号的存在。

公开(公告)号：US07007846B2

公开(公告)日：2006-03-07

申请号：US10434873

申请日：2003-05-09

Applicant: Stephen J. Shellhammer

Inventor： Stephen J. Shellhammer

IPC: G06K7/10 ,  G06K9/00

CPC classification number: G06K9/3216

Abstract: A method and apparatus for aligning a scan pattern to a two dimensional bar code having parallel rows of codewords. The two dimensional bar code is scanned with a scanning pattern oriented such that a plurality of lines thereof cross the bar code rows. A determination if there is a non-zero angle between at least one of the plurality of lines and the rows by decoding codewords in rows intersected by the at least one line is made and the orientation of the scanning pattern is adjusted to reduce the absolute value of the angle.

Abstract translation: 一种用于将扫描图案对准具有平行的码字行的二维条形码的方法和装置。 以扫描图案扫描二维条形码，使得其多条线路横穿条形码行。 确定通过对由至少一行相交的行中的码字进行解码，在多个行和行中的至少一个之间存在非零角度，并且调整扫描模式的方向以减小绝对值 的角度

公开(公告)号：US06992564B2

公开(公告)日：2006-01-31

申请号：US09909369

申请日：2001-07-19

Applicant: Sean A. Connolly ,  William Sackett ,  Stephen J. Shellhammer ,  Frank Boccuzzi ,  Adam Levine

Inventor： Sean A. Connolly ,  William Sackett ,  Stephen J. Shellhammer ,  Frank Boccuzzi ,  Adam Levine

IPC: G06F7/00

CPC classification number: G06K17/00 ,  G06K2017/0045

Abstract: A system and method described for tracking portable devices. The system may include a transmitter which transmits wireless inquiries to a plurality of portable devices and a receiver receiving replies to the inquiries from the portable devices. In addition, the system may include a memory storing identifier data corresponding to the portable devices and a processor coupled to the memory and to the receiver, the processor retrieving from each reply, identifier data uniquely identifying a particular one of the portable devices which generated the reply and comparing the identifier data to the stored identifier data. Furthermore, the system may include an alarm system coupled to the processor and controlled based on the comparison of stored identifier data to the identifier data retrieved from the replies.