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1. 发明授权

US08755813B2 TV white space devices using structured databases 有权
标题翻译：电视白色空间设备使用结构化数据库
公开(公告)号：US08755813B2
公开(公告)日：2014-06-17
申请号：US13498106
申请日：2010-07-09
申请人： Jung Yee , Vajira Samarasooriya , Lingjie Li
发明人： Jung Yee , Vajira Samarasooriya , Lingjie Li
IPC分类号： H04W72/00
CPC分类号： G06F17/30289 , G06F17/30091 , G06F17/30345 , G06F17/30557 , H04W16/14 , H04W28/18 , H04W48/14
摘要： A two-level database structure for use by unlicensed TVBD devices operating in TV white space comprises a central database and local databases. The central database comprises two sub-database: the central licensed database which maintains information about all licensed TV devices and the central unlicensed database which maintains information about unlicensed wireless devices operating in TV spectrum. The local database is created by each TVBD device or TVBD network when it initiates and it stores information related to all transmitters in the local area including location, power transmission levels, operating schedule, sensing results, backup channel information. The local databases communicate with central database to query it about licensed usage of TV spectrum and register with central database. The local databases communicate with each other to exchange information about channel usage, sensing results, transmission patterns and other information that will allow the local databases to negotiate coexistence without central coordinator. The locally implemented negotiation prevents the overloading of the central database.
摘要翻译：用于在TV空白中工作的未经许可的TVBD设备使用的两级数据库结构包括中央数据库和本地数据库。中央数据库包括两个子数据库：中央许可数据库，其维护关于所有许可的电视设备的信息和中央非许可数据库，其维护关于在TV频谱中操作的未许可的无线设备的信息。每个TVBD设备或TVBD网络创建本地数据库，并且存储与本地区域中的所有发射机有关的信息，包括位置，功率传输级别，操作时间表，感测结果，备份信道信息。本地数据库与中央数据库进行通信，查询有关电视频谱的许可使用情况，并向中央数据库注册。本地数据库相互通信以交换关于信道使用，感测结果，传输模式和其他信息的信息，这些信息将允许本地数据库在没有中央协调器的情况下协商共存。本地实施的协商可以防止中央数据库的超载。

2. 发明申请

US20130103684A1 TV WHITE SPACE DEVICES USING STRUCTURED DATABASES 有权
标题翻译：电视使用结构化数据库的空白设备
公开(公告)号：US20130103684A1
公开(公告)日：2013-04-25
申请号：US13498106
申请日：2010-07-09
申请人： Jung Yee , Vajira Samarasooriya , Lingjie Li
发明人： Jung Yee , Vajira Samarasooriya , Lingjie Li
IPC分类号： G06F17/30
CPC分类号： G06F17/30289 , G06F17/30091 , G06F17/30345 , G06F17/30557 , H04W16/14 , H04W28/18 , H04W48/14
摘要： A two-level database structure for use by unlicensed TVBD devices operating in TV white space comprises a central database and local databases. The central database comprises two sub-database: the central licensed database which maintains information about all licensed TV devices and the central unlicensed database which maintains information about unlicensed wireless devices operating in TV spectrum. The local database is created by each TVBD device or TVBD network when it initiates and it stores information related to all transmitters in the local area including location, power transmission levels, operating schedule, sensing results, backup channel information. The local databases communicate with central database to query it about licensed usage of TV spectrum and register with central database. The local databases communicate with each other to exchange information about channel usage, sensing results, transmission patterns and other information that will allow the local databases to negotiate coexistence without central coordinator. The locally implemented negotiation prevents the overloading of the central database.
摘要翻译：用于在TV空白中工作的未经许可的TVBD设备使用的两级数据库结构包括中央数据库和本地数据库。中央数据库包括两个子数据库：中央许可数据库，其维护关于所有许可的电视设备的信息和中央非许可数据库，其维护关于在TV频谱中操作的未许可的无线设备的信息。每个TVBD设备或TVBD网络创建本地数据库，并且存储与本地区域中的所有发射机有关的信息，包括位置，功率传输级别，操作时间表，感测结果，备份信道信息。本地数据库与中央数据库进行通信，查询有关电视频谱的许可使用情况，并向中央数据库注册。本地数据库相互通信以交换关于信道使用，感测结果，传输模式和其他信息的信息，这些信息将允许本地数据库在没有中央协调器的情况下协商共存。本地实施的协商可以防止中央数据库的超载。

3. 发明授权

US08976302B2 Radio frequency front end for television band receiver and spectrum sensor 有权
标题翻译：射频前端用于电视频段接收机和频谱传感器
公开(公告)号：US08976302B2
公开(公告)日：2015-03-10
申请号：US13429205
申请日：2012-03-23
申请人： Neil Birkett , Vajira Samarasooriya , Jung Yee
发明人： Neil Birkett , Vajira Samarasooriya , Jung Yee
IPC分类号： H04N5/50
CPC分类号： H04N5/4401 , H04N5/46 , H04N5/50 , H04N21/4263 , H04N21/4383
摘要： A radio frequency front end for a television band receiver and spectrum sensor includes a low noise amplifier that amplifies a received signal output of a radio frequency antenna connected to the radio frequency front end, a pin diode attenuator circuit that selectively attenuates an output of the low noise amplifier, and a buffer amplifier that amplifies an output of the pin diode attenuator.
摘要翻译：用于电视频带接收机和频谱传感器的射频前端包括放大连接到射频前端的射频天线的接收信号输出的低噪声放大器，选择性地衰减低频输出的引脚二极管衰减器电路噪声放大器和放大pin二极管衰减器的输出的缓冲放大器。

4. 发明授权

US08823806B2 Method and apparatus for television band pilot sensing 有权
标题翻译：电视频带导频感测的方法和装置
公开(公告)号：US08823806B2
公开(公告)日：2014-09-02
申请号：US13030749
申请日：2011-02-18
申请人： Vajira Samarasooriya , Daniel Payer , Jung Yee
发明人： Vajira Samarasooriya , Daniel Payer , Jung Yee
IPC分类号： H04N17/02
CPC分类号： H04N17/004 , H04L25/03828 , H04N5/50 , H04N5/52 , H04N21/4383 , H04N21/6131
摘要： A DTV pilot sensor generates DTV pilot tone detection decisions associated with monitored television band channels without knowledge or estimation of a noise level of the monitored channel.
摘要翻译： DTV导频传感器产生与监视的电视频带信道相关联的DTV导频音检测决策，而不知道或估计所监视的频道的噪声电平。

5. 发明申请

US20140307565A1 SYSTEMS AND METHODS FOR TV WHITE SPACE SPECTRUM SENSING 审中-公开
标题翻译：电视空白光谱传感系统与方法
公开(公告)号：US20140307565A1
公开(公告)日：2014-10-16
申请号：US13978121
申请日：2012-01-06
申请人： Vajira Samarasooriya , Neil Birkett , Michael Moher , Jung Yee
发明人： Vajira Samarasooriya , Neil Birkett , Michael Moher , Jung Yee
IPC分类号： H04W16/14 , H04W24/00
CPC分类号： H04W16/14 , H04B1/18 , H04B17/26 , H04B17/336 , H04B17/345 , H04B17/373 , H04L27/0006 , H04W24/00 , H04W28/04 , H04W72/00
摘要： A spectrum sensor detects the presence of incumbent signals in the television-band. The spectrum sensor can detect digital Advanced Television Systems Committee (ATSC) signals below a −114 dBm signal level and wireless microphone signals below a −110 dBm signal level with false detection rates less than 10%. A radio module receives radio-frequency signals and produces an intermediate-frequency signal reflecting signal received in a selected television channel. A baseband processor module receives the intermediate-frequency signal, digitizes it, and processes the digital data to detecting whether an incumbent signal is present in the selected channel. The processing may include using pilot detection based on power spectrum thresholding or statistic characteristic extraction to detect ATSC signals. The processing may also include using power spectrum thresholding or covariance based signal detection to detect wireless microphone signals.
摘要翻译：频谱传感器检测电视频段中现有信号的存在。频谱传感器可以检测低于-114 dBm信号电平的数字高级电视系统委员会（ATSC）信号，低于-110 dBm信号电平的无线麦克风信号，误检率低于10％。无线电模块接收射频信号并产生反映在所选电视频道中接收的信号的中频信号。基带处理器模块接收中频信号，对其进行数字化处理，并且处理数字数据以检测所选信道中是否存在现有信号。该处理可以包括使用基于功率谱阈值或统计特征提取的导频检测来检测ATSC信号。该处理还可以包括使用功率谱阈值或基于协方差的信号检测来检测无线麦克风信号。

6. 发明申请

US20120212625A1 METHOD AND APPARATUS FOR TELEVISION BAND PILOT SENSING 有权
标题翻译：电视传感器方法与装置
公开(公告)号：US20120212625A1
公开(公告)日：2012-08-23
申请号：US13030749
申请日：2011-02-18
申请人： Vajira Samarasooriya , Daniel Payer , Jung Yee
发明人： Vajira Samarasooriya , Daniel Payer , Jung Yee
IPC分类号： H04N17/00 , H04N5/50
CPC分类号： H04N17/004 , H04L25/03828 , H04N5/50 , H04N5/52 , H04N21/4383 , H04N21/6131
摘要： A DTV pilot sensor generates DTV pilot tone detection decisions associated with monitored television band channels without knowledge or estimation of a noise level of the monitored channel.
摘要翻译： DTV导频传感器产生与监视的电视频带信道相关联的DTV导频音检测决策，而不知道或估计所监视的频道的噪声电平。

7. 发明申请

US20120182430A1 RADIO FREQUENCY FRONT END FOR TELEVISION BAND RECEIVER AND SPECTRUM SENSOR 有权
标题翻译：电视带接收机和频谱传感器的无线电频率前端
公开(公告)号：US20120182430A1
公开(公告)日：2012-07-19
申请号：US13429205
申请日：2012-03-23
申请人： Neil Birkett , Vajira Samarasooriya , Jung Yee
发明人： Neil Birkett , Vajira Samarasooriya , Jung Yee
IPC分类号： H04N5/50 , H03M1/12 , H04N17/00 , H04N5/44
CPC分类号： H04N5/4401 , H04N5/46 , H04N5/50 , H04N21/4263 , H04N21/4383
摘要： A radio frequency front end for a television band receiver and spectrum sensor includes a low noise amplifier that amplifies a received signal output of a radio frequency antenna connected to the radio frequency front end, a pin diode attenuator circuit that selectively attenuates an output of the low noise amplifier, and a buffer amplifier that amplifies an output of the pin diode attenuator.
摘要翻译：用于电视频带接收机和频谱传感器的射频前端包括放大连接到射频前端的射频天线的接收信号输出的低噪声放大器，选择性地衰减低频输出的引脚二极管衰减器电路噪声放大器和放大pin二极管衰减器的输出的缓冲放大器。

8. 发明申请

US20130165051A9 SYSTEM AND METHOD OF IMPLEMENTING A COGNITIVE RADIO DEVICE WITH ENHANCED SPECTRUM SENSING 有权
标题翻译：实现具有增强光谱感知的认知无线电设备的系统和方法
公开(公告)号：US20130165051A9
公开(公告)日：2013-06-27
申请号：US13489078
申请日：2012-06-05
申请人： Lingjie Li , Jung Yee
发明人： Lingjie Li , Jung Yee
IPC分类号： H04B17/00
CPC分类号： H04W16/14 , H04W64/00
摘要： A cognitive radio band device uses information gleaned from a database inquiry based on geo-location information in combination with spectrum sensing to determine if cognitive radio channels are available for unlicensed use.
摘要翻译：认知无线电频段设备使用基于地理位置信息的数据库查询收集的信息与频谱感测相结合，以确定认知无线电信道是否可用于未经许可的使用。

9. 发明授权

US08692891B2 System and method of implementing a TV band device with enhanced spectrum sensing 有权
标题翻译：实现具有增强的频谱感测的电视频带设备的系统和方法
公开(公告)号：US08692891B2
公开(公告)日：2014-04-08
申请号：US13275006
申请日：2011-10-17
申请人： Lingjie Li , Jung Yee
发明人： Lingjie Li , Jung Yee
IPC分类号： H04N17/00 , H04N17/02 , H04N5/50 , H04W4/00 , G01R31/08 , G06F11/00 , G08C15/00 , H04J1/16 , H04J3/14 , H04L1/00 , H04L12/26
CPC分类号： H04N21/42202 , H04N5/50 , H04N21/25841 , H04N21/436
摘要： A TV band device for indoor applications uses information gleaned from a database inquiry based on geo-location information in combination with spectrum sensing to determine if TV channels are available for unlicensed use.
摘要翻译：用于室内应用的电视频带设备使用基于地理位置信息的数据库查询收集的信息与频谱感测相结合，以确定电视频道是否可用于未许可使用。

10. 发明申请

US20120127936A1 SYSTEMS AND METHODS FOR CHANNEL TRACKING IN OFDMA 有权
标题翻译： OFDMA中的通道跟踪系统和方法
公开(公告)号：US20120127936A1
公开(公告)日：2012-05-24
申请号：US13297656
申请日：2011-11-16
申请人： Lingjie Li , Michael L. Moher , Jung Yee
发明人： Lingjie Li , Michael L. Moher , Jung Yee
IPC分类号： H04W72/04
CPC分类号： H04L5/0007 , H04L5/0044 , H04L5/0048 , H04L5/0094
摘要： Methods and systems which include identifying a needed amount of US bandwidth to be allocated to a user terminal; determining the subcarriers and the number of symbols per subcarrier to be allocated to meet the identified need in a burst; allocating, for the user terminal, a set of subcarriers and a number of symbols for each member of the set of subcarriers, wherein sufficient symbols per subcarrier per burst are allocated to allow user terminal to send two or more pilots per subcarrier per burst; and transmitting a message to the user terminal, the message identifying the allocated subcarriers and the number of symbols allocated for each subcarrier.
摘要翻译：包括识别要分配给用户终端的US带宽所需数量的方法和系统; 确定要在分组中满足所识别的需要的每个副载波的子载波和符号的数量; 为用户终端分配一组子载波和每个子载波组的每个成员的符号数，其中每个突发的每个子载波的足够符号被分配以允许用户终端每个突发发送两个或更多个每个子载波的导频; 以及向用户终端发送消息，识别所分配的子载波的消息和为每个子载波分配的符号数。

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