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    MANAGING TRANSMIT POWER FOR BETTER FREQUENCY RE-USE IN TV WHITE SPACE
    51.
    发明申请
    MANAGING TRANSMIT POWER FOR BETTER FREQUENCY RE-USE IN TV WHITE SPACE 审中-公开
    管理发射功率，在电视白天更好的频率重新使用

    公开(公告)号：US20130044681A1

    公开(公告)日：2013-02-21

    申请号：US13397493

    申请日：2012-02-15

    Applicant: Santosh Paul Abraham ,  Sameer Vermani ,  Hemanth Sampath ,  Stephen J. Shellhammer ,  Rahul Tandra

    Inventor： Santosh Paul Abraham ,  Sameer Vermani ,  Hemanth Sampath ,  Stephen J. Shellhammer ,  Rahul Tandra

    IPC: H04W4/00

    CPC classification number: H04L1/0002 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0027 ,  H04W16/14 ,  H04W52/262 ,  H04W52/50

    Abstract: Certain aspects of the present disclosure provide techniques and apparatus for managing transmit power in a television white space (TVWS) network. By managing transmit power as described herein, medium re-use may be improved in such a network, and unfair usage problems may be alleviated. One example method generally includes receiving a request message comprising an indication of a modulation and coding scheme (MCS) for transmitting data frames to be received, determining a link margin based on the MCS, and transmitting a response message with an indication of the link margin. Another example method generally includes determining a MCS for transmitting data frames and transmitting a request message comprising an indication of the MCS.

    Abstract translation: 本公开的某些方面提供了用于管理电视空白（TVWS）网络中的发射功率的技术和装置。 通过如本文所述管理发送功率，可以在这样的网络中改善中等重复使用，并且可以减轻不公平的使用问题。 一个示例性方法通常包括接收包括用于发送要接收的数据帧的调制和编码方案（MCS）的指示的请求消息，基于MCS确定链路余量，以及发送具有链路余量指示的响应消息 。 另一示例性方法通常包括确定用于发送数据帧的MCS并发送包括MCS的指示的请求消息。

    MANAGING TRANSMIT POWER FOR BETTER FREQUENCY RE-USE IN TV WHITE SPACE
    52.
    发明申请
    MANAGING TRANSMIT POWER FOR BETTER FREQUENCY RE-USE IN TV WHITE SPACE 有权
    管理发射功率，在电视白天更好的频率重新使用

    公开(公告)号：US20130044680A1

    公开(公告)日：2013-02-21

    申请号：US13397473

    申请日：2012-02-15

    Applicant: Santosh Paul Abraham ,  Sameer Vermani ,  Hemanth Sampath ,  Stephen J. Shellhammer ,  Rahul Tandra

    Inventor： Santosh Paul Abraham ,  Sameer Vermani ,  Hemanth Sampath ,  Stephen J. Shellhammer ,  Rahul Tandra

    IPC: H04W52/04

    CPC classification number: H04W16/14 ,  H04W48/12 ,  H04W52/242 ,  H04W52/246 ,  H04W52/325 ,  H04W52/367 ,  H04W74/0808

    Abstract: Certain aspects of the present disclosure provide techniques and apparatus for managing transmit power in a television white space (TVWS) network. By managing transmit power as described herein, medium re-use may be improved in such a network, and unfair usage problems may be alleviated. One example method generally includes receiving, from an apparatus, a message with an indication of a highest transmit power used by the apparatus for transmitting data frames; and determining that the apparatus is a dominant interferer based, at least in part, on the highest transmit power. Another example method generally includes receiving, from an apparatus, a control or management message with a first indication of a first transmit power used by the apparatus for transmitting data frames; and determining that the apparatus is a dominant interferer based, at least in part, on the first transmit power.

    Abstract translation: 本公开的某些方面提供了用于管理电视空白（TVWS）网络中的发射功率的技术和装置。 通过如本文所述管理发送功率，可以在这样的网络中改善中等重复使用，并且可以减轻不公平的使用问题。 一个示例性方法通常包括从设备接收具有由用于发送数据帧的设备使用的最高发射功率的指示的消息; 以及至少部分地基于最高发射功率确定所述装置是主要干扰源。 另一示例性方法通常包括从装置接收控制或管理消息，其具有用于发送数据帧的装置所使用的第一发射功率的第一指示; 以及至少部分地基于所述第一发射功率来确定所述装置是主要干扰源。

    DISTINGUISHING AND COMMUNICATING BETWEEN WHITE SPACE DEVICES TRANSMITTING ATSC-COMPATIBLE SIGNALS
    55.
    发明申请
    DISTINGUISHING AND COMMUNICATING BETWEEN WHITE SPACE DEVICES TRANSMITTING ATSC-COMPATIBLE SIGNALS 失效
    白色空间传输ATSC兼容信号之间的分类与通信

    公开(公告)号：US20110164186A1

    公开(公告)日：2011-07-07

    申请号：US12652629

    申请日：2010-01-05

    Applicant: Ahmed K. Sadek ,  Wenyi Zhang ,  Babak Aryan ,  Vijayalakshimi Raveendran ,  Avinash Jain ,  Stephen J. Shellhammer ,  Charles A. Bergan

    Inventor： Ahmed K. Sadek ,  Wenyi Zhang ,  Babak Aryan ,  Vijayalakshimi Raveendran ,  Avinash Jain ,  Stephen J. Shellhammer ,  Charles A. Bergan

    IPC: H04N5/40

    CPC classification number: H04H20/33 ,  H04H20/30 ,  H04H60/07 ,  H04L5/005 ,  H04L5/0062 ,  H04N5/4401 ,  H04W16/14

    Abstract: White space signals are differentiated from licensed ATSC signals through modification of a waveform of the white space signal. White space signals may be modified by shifting the ATSC-compatible waveform so that the pilot frequency of the white space signal is at a location outside of the frequency range associated with the pilot frequency in a licensed ATSC signal or embedding a watermark signal into said ATSC-like white space signals. White space device transmitters generate the signals with these modifications and white space receivers are equipped to detect whether a pilot exists in the standard licensed pilot frequencies. Based on these differences, white space devices can better operate without interfering with licensed ATSC transmission. Additionally, the modification techniques may be used to embed data in the white space signal that may be used to communicate connection data or networking data to other white space devices.

    Abstract translation: 通过修改白空间信号的波形，白色空间信号与许可的ATSC信号区分开来。 可以通过移动ATSC兼容波形来修改白色空间信号，使得白色空间信号的导频位于与授权的ATSC信号中与导频频率相关联的频率范围之外的位置，或者将水印信号嵌入到所述ATSC 像空白信号。 白色空间设备发射机通过这些修改产生信号，并配备白空间接收机，以检测在标准许可的导频中是否存在导频。 基于这些差异，白色空间设备可以更好地操作而不干扰授权的ATSC传输。 此外，修改技术可以用于将数据嵌入到可用于将连接数据或联网数据传送到其他空白设备的空白信号中。

    MULTICHANNEL DYNAMIC FREQUENCY SELECTION
    56.
    发明申请
    MULTICHANNEL DYNAMIC FREQUENCY SELECTION 有权
    多通道动态频率选择

    公开(公告)号：US20100197317A1

    公开(公告)日：2010-08-05

    申请号：US12695314

    申请日：2010-01-28

    Applicant: Ahmed K. Sadek ,  Alexei Gorokhov ,  Stephen J. Shellhammer

    Inventor： Ahmed K. Sadek ,  Alexei Gorokhov ,  Stephen J. Shellhammer

    IPC: H04W72/08

    CPC classification number: H04W72/082 ,  H04W16/14 ,  H04W72/0406

    Abstract: Multichannel dynamic frequency selection in wireless networks begins with an access point for a wireless network broadcasting a list of unused channels that are available for communication within the area served by the access point. The various access terminals within this service area receive the broadcast and measure various interference characteristics of each of the channels in the list. The access terminals then send this interference information to the access point, which compiles a matrix of interference information that is associated with the quality of each signal as related to each access terminal. Using this information, the access point selects the appropriate channels to serve the most number of access terminals at the highest possible channel qualities.

    Abstract translation: 无线网络中的多信道动态频率选择开始于无线网络的接入点，该接入点广播可用于由接入点服务的区域内的通信的未使用信道的列表。 该服务区域内的各种接入终端接收广播并测量列表中每个频道的各种干扰特性。 接入终端然后将该干扰信息发送到接入点，该接入点编译与每个接入终端相关的每个信号的质量相关联的干扰信息矩阵。 使用该信息，接入点选择适当的信道以尽可能高的信道质量来服务于最多的接入终端。

    DISTRIBUTED PRIORITIZED CONTENTION FOR SPECTRUM SHARING
    57.
    发明申请
    DISTRIBUTED PRIORITIZED CONTENTION FOR SPECTRUM SHARING 有权
    用于分光共享的分布式优先注意

    公开(公告)号：US20100195572A1

    公开(公告)日：2010-08-05

    申请号：US12688740

    申请日：2010-01-15

    Applicant: Ahmed K. Sadek ,  Stephen J. Shellhammer

    Inventor： Ahmed K. Sadek ,  Stephen J. Shellhammer

    IPC: H04W4/00 ,  H04J3/02

    CPC classification number: H04L5/0033 ,  H04L5/0035 ,  H04W16/14 ,  H04W74/085

    Abstract: Techniques for use in contending for a portion of a television channel spectrum are disclosed. In some instances, a back-off value is used to decide whether a contender's contention number will be transmitted when the contention channel is free, and the back-off value is determined based on the contention number. In some instances, a contender monitors the contention channel and withdraws from contention if it detects from the contention channel that a higher priority contender is in contention.

    Abstract translation: 公开了用于竞争电视频道频谱的一部分的技术。 在某些情况下，使用退避值来决定竞争者的竞争号码是否在竞争信道是空闲时被发送，并且基于竞争号确定退避价值。 在某些情况下，如果竞争者从争用频道中检测到较高优​​先级的竞争者在争夺中，则竞争者监视争用通道并退出争用。

    Omnidirectional reading of two-dimensional symbols
    59.
    发明授权
    Omnidirectional reading of two-dimensional symbols 有权
    全方位阅读二维符号

    公开(公告)号：US06672511B1

    公开(公告)日：2004-01-06

    申请号：US09625374

    申请日：2000-07-25

    Applicant: Stephen J. Shellhammer

    Inventor： Stephen J. Shellhammer

    IPC: G06K932

    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。

    Bar code scan stitching
    60.
    发明授权
    Bar code scan stitching 失效
    条形码扫描缝合

    公开(公告)号：US5444231A

    公开(公告)日：1995-08-22

    申请号：US375182

    申请日：1995-01-18

    Applicant: Stephen J. Shellhammer ,  Emanuel Marom

    Inventor： Stephen J. Shellhammer ,  Emanuel Marom

    IPC: G06K7/10 ,  G06K7/14 ,  G06F7/10

    CPC classification number: G06K7/1491 ,  G06K7/14 ,  G06K7/1486

    Abstract: Combining scan fragments of a bar code symbol. Each fragment is represented by a series of values, with each value representing the width of an element in the fragment. The alignment at which the fragments are combined is determined by shifting the alignment of the fragments over a range of positions, and determining for each position an index of the overall degree of similarity between the aligned values of the two fragments at that position. The fragments are combined at an alignment that produces a relatively larger index value (e.g., that maximizes the index). The index of overall similarity may be a correlation factor representing the degree of correlation, at each tested alignment, between the series of values representing each fragment. The index of overall similarity may alternately be the number of consecutive matching elements. At each position, the values in each series are compared and the number of consecutive values that match within a preselected tolerance is determined.

    Abstract translation: 组合条形码符号的扫描片段。 每个片段由一系列值表示，每个值表示片段中元素的宽度。 通过在片段的位置移动片段的比对来确定片段组合的对准，并且确定每个位置在该位置处两个片段的对齐值之间的总体相似度的索引。 片段以对准方式组合，产生相对较大的索引值（例如，使索引最大化）。 总体相似性的指数可以是表示每个测试对齐时在表示每个片段的一系列值之间的相关程度的相关因子。 总体相似度的索引可以替代地是连续匹配元素的数量。 在每个位置，比较每个系列中的值，并确定在预选公差内匹配的连续值的数量。

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