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1. 发明授权

US08626056B2 Adjustable transmitter for privacy protection of content broadcast from a transmitting device to a receiving device 失效
标题翻译：可调节发射机，用于从发射设备广播到接收设备的内容的隐私保护
公开(公告)号：US08626056B2
公开(公告)日：2014-01-07
申请号：US12834342
申请日：2010-07-12
申请人： Yong Jin Kim , Stephen J. Shellhammer , Vijayalakshmi R. Raveendran , Wenyi Zhang , Ahmed K. Sadek , Yu A. Wang
发明人： Yong Jin Kim , Stephen J. Shellhammer , Vijayalakshmi R. Raveendran , Wenyi Zhang , Ahmed K. Sadek , Yu A. Wang
IPC分类号： H04H20/71
CPC分类号： H04N21/43637 , G09G5/006 , H04L65/4076 , H04L65/80 , H04N21/4122
摘要： 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.
摘要翻译：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。

2. 发明申请

US20110009049A1 Adjustable Transmitter For Privacy Protection Of Content Broadcast From A Transmitting Device To A Receiving Device 失效
标题翻译：可调式发射机用于从传输设备到接收设备的内容广播的隐私保护
公开(公告)号：US20110009049A1
公开(公告)日：2011-01-13
申请号：US12834342
申请日：2010-07-12
申请人： Yong Jin Kim , Stephen J. Shellhammer , Vijayalakshmi R. Raveendran , Wenyi Zhang , Ahmed K. Sadek , Yu A. Wang
发明人： Yong Jin Kim , Stephen J. Shellhammer , Vijayalakshmi R. Raveendran , Wenyi Zhang , Ahmed K. Sadek , Yu A. Wang
IPC分类号： H04H20/71
CPC分类号： H04N21/43637 , G09G5/006 , H04L65/4076 , H04L65/80 , H04N21/4122
摘要： 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.
摘要翻译：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。

3. 发明申请

US20130012138A1 METHOD FOR IMPROVING ROBUSTNESS OF SPECTRUM SENSING IN PRESENCE OF BURSTY INTERFERENCE 审中-公开
标题翻译：用于改善波纹干扰存在的光谱感知的鲁棒性的方法
公开(公告)号：US20130012138A1
公开(公告)日：2013-01-10
申请号：US13177334
申请日：2011-07-06
申请人： Wenyi Zhang , Cong Shen , Ahmed K. Sadek , Yong Jin Kim , Stephen J. Shellhammer
发明人： Wenyi Zhang , Cong Shen , Ahmed K. Sadek , Yong Jin Kim , Stephen J. Shellhammer
IPC分类号： H04B17/00
CPC分类号： H04W16/14 , H04B17/26 , H04B17/309
摘要： A method of wireless communication in white space includes spectrum sensing in the white space during each of multiple sensing intervals. The method also includes determining whether each of the sensing intervals is subject to interference. The determining process may be based on a time domain analysis or a frequency domain analysis of signal power during each sensing interval.
摘要翻译：白色空间中的无线通信方法包括在多个感测间隔中的每一个期间的白色空间中的频谱感测。该方法还包括确定每个感测间隔是否受到干扰。确定过程可以基于每个感测间隔期间的信号功率的时域分析或频域分析。

4. 发明申请

US20110045781A1 SENSING WIRELESS COMMUNICATIONS IN TELEVISION FREQUENCY BANDS 有权
标题翻译：电视频段无线通信
公开(公告)号：US20110045781A1
公开(公告)日：2011-02-24
申请号：US12858334
申请日：2010-08-17
申请人： Stephen J. Shellhammer , Ahmed K. Sadek , Wenyi Zhang
发明人： Stephen J. Shellhammer , Ahmed K. Sadek , Wenyi Zhang
IPC分类号： H04B17/00
CPC分类号： H04B17/0057 , H04B17/26 , H04B17/318 , H04B17/382
摘要： 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.
摘要翻译：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。

5. 发明授权

US08892050B2 Sensing wireless communications in television frequency bands 有权
标题翻译：感应电视频段的无线通信
公开(公告)号：US08892050B2
公开(公告)日：2014-11-18
申请号：US12858334
申请日：2010-08-17
申请人： Stephen J. Shellhammer , Ahmed K. Sadek , Wenyi Zhang
发明人： Stephen J. Shellhammer , Ahmed K. Sadek , Wenyi Zhang
IPC分类号： H04B17/00
CPC分类号： H04B17/0057 , H04B17/26 , H04B17/318 , H04B17/382
摘要： 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.
摘要翻译：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。

6. 发明授权

US08749714B2 Distinguishing and communicating between white space devices transmitting ATSC-compatible signals 失效
标题翻译：区分和通信发送ATSC兼容信号的白色空间设备
公开(公告)号：US08749714B2
公开(公告)日：2014-06-10
申请号：US12652629
申请日：2010-01-05
申请人： Ahmed K. Sadek , Wenyi Zhang , Babak Aryan , Vijayalakshimi Raveendran , Avinash Jain , Stephen J. Shellhammer , Charles A. Bergan
发明人： Ahmed K. Sadek , Wenyi Zhang , Babak Aryan , Vijayalakshimi Raveendran , Avinash Jain , Stephen J. Shellhammer , Charles A. Bergan
IPC分类号： H04N5/38 , H04N5/44
CPC分类号： H04H20/33 , H04H20/30 , H04H60/07 , H04L5/005 , H04L5/0062 , H04N5/4401 , H04W16/14
摘要： 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.
摘要翻译：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。

7. 发明申请

US20110164186A1 DISTINGUISHING AND COMMUNICATING BETWEEN WHITE SPACE DEVICES TRANSMITTING ATSC-COMPATIBLE SIGNALS 失效
标题翻译：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
申请人： Ahmed K. Sadek , Wenyi Zhang , Babak Aryan , Vijayalakshimi Raveendran , Avinash Jain , Stephen J. Shellhammer , Charles A. Bergan
发明人： Ahmed K. Sadek , Wenyi Zhang , Babak Aryan , Vijayalakshimi Raveendran , Avinash Jain , Stephen J. Shellhammer , Charles A. Bergan
IPC分类号： H04N5/40
CPC分类号： H04H20/33 , H04H20/30 , H04H60/07 , H04L5/005 , H04L5/0062 , H04N5/4401 , H04W16/14
摘要： 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.
摘要翻译：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。

8. 发明申请

US20110182257A1 WHITE SPACE SPECTRUM COMMMUNCIATION DEVICE WITH MULTIPLEXING CAPABILTIES 审中-公开
标题翻译：具有多重复用能力的白色空间频谱通信设备
公开(公告)号：US20110182257A1
公开(公告)日：2011-07-28
申请号：US13012911
申请日：2011-01-25
申请人： Vijayalakshmi R. Raveendran , Ahmed K. Sadek
发明人： Vijayalakshmi R. Raveendran , Ahmed K. Sadek
IPC分类号： H04W4/00
CPC分类号： H04H20/61 , H04H20/22 , H04H20/28 , H04H60/43 , H04N7/17318 , H04N21/236 , H04N21/2381 , H04N21/2385 , H04N21/2402 , H04N21/4381
摘要： In one example, a method includes receiving a plurality of input signals at a multiplexer of a white space device, and generating, via the multiplexer, a multiplexed output signal that includes at least two of the plurality of input signals. The method also includes sensing whether a white space frequency is available for unlicensed use, and communicating the multiplexed output signal over the white space frequency via a transmitter of the white space device when the white space frequency is available for unlicensed use.
摘要翻译：在一个示例中，一种方法包括在白空间设备的多路复用器处接收多个输入信号，并且经由多路复用器生成包括多个输入信号中的至少两个的多路复用输出信号。该方法还包括检测白色空间频率是否可用于未许可使用，以及当白色空间频率可用于未许可使用时，经由白色空间设备的发射机在白色空间频率上传送多路复用的输出信号。

9. 发明授权

US08774209B2 Apparatus and method for spectrum sharing using listen-before-talk with quiet periods 有权
标题翻译：用静音方式进行频谱共享的装置和方法
公开(公告)号：US08774209B2
公开(公告)日：2014-07-08
申请号：US12852128
申请日：2010-08-06
申请人： Ahmed K. Sadek , Stephen J. Shellhammer
发明人： Ahmed K. Sadek , Stephen J. Shellhammer
IPC分类号： H04L12/413 , H04W74/00
CPC分类号： H04W16/14 , H04W72/082 , H04W74/0808
摘要： Apparatus and method for spectrum sharing using listen before talk (LBT) and quiet periods are disclosed. This includes assessing using LBT to determine if a shared spectrum channel is being used by at least one other network, and transmitting transmission frames over the shared spectrum channel in at least one of an uplink or a downlink when the channel is determined as not being used. The accumulated time of transmission use of the spectrum channel is counted based on predetermined conditions, and a determination made when the accumulated time exceeds a maximum allotted time. Transmission of frames by a network is allowed to continue if the maximum time has not been exceeded and the spectrum remains available. A quiet period is then executed once the maximum time period is exceeded.
摘要翻译：公开了使用听前（LBT）和安静时段进行频谱共享的装置和方法。这包括使用LBT来评估是否由至少一个其他网络使用共享频道信道，以及当该信道被确定为不被使用时，在上行链路或下行链路中的至少一个中通过共享频道信道发送传输帧。基于预定条件计算频谱信道的传输使用的累积时间，并且当累积时间超过最大分配时间时进行确定。如果没有超过最大时间并且频谱保持可用，网络传输帧将被允许继续。一旦超过最大时间段，则执行一个安静的周期。

10. 发明授权

US08290503B2 Multichannel dynamic frequency selection 有权
标题翻译：多通道动态频率选择
公开(公告)号：US08290503B2
公开(公告)日：2012-10-16
申请号：US12695314
申请日：2010-01-28
申请人： Ahmed K. Sadek , Alexei Gorokhov , Stephen J. Shellhammer
发明人： Ahmed K. Sadek , Alexei Gorokhov , Stephen J. Shellhammer
IPC分类号： H04W72/00
CPC分类号： H04W72/082 , H04W16/14 , H04W72/0406
摘要： 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.
摘要翻译：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。

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