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公开(公告)号：US20140241474A1
公开(公告)日：2014-08-28
申请号：US14351080
申请日：2011-10-19
Applicant: Vesa Turunen
Inventor： Vesa Turunen
IPC: H04L27/26
CPC classification number: H04L27/2663 , H04B1/707 , H04B2201/692 , H04L27/2607
Abstract: In accordance with an example embodiment of the present invention the application discloses a method and an apparatus to receive a signal (501) in a radio device on a radio channel; calculate a plurality of cyclic autocorrelations (504′, 505) for the received signal (501), wherein calculating the plurality of cyclic autocorrelations comprises selecting a cyclic frequency (503) and at least two delay values (502, 512) corresponding to the plurality of cyclic autocorrelations (504′, 505); to compensate a phase offset of at least one of the plurality of cyclic autocorrelations (504′) by at least one compensation term (506) to obtain a plurality of phase compensated autocorrelations (504), wherein the compensation term (506) is dependent on the cyclic frequency (503) and a corresponding delay value of the at least two delay values; and to combine the plurality of phase compensated autocorrelations.
Abstract translation: 根据本发明的示例性实施例，本申请公开了一种在无线电信道上的无线电设备中接收信号（501）的方法和装置; 计算所述接收信号（501）的多个循环自相关（504'，505），其中计算所述多个循环自相关包括选择与多个循环自相关对应的循环频率（503）和至少两个延迟值（502,512） 的循环自相关（504'，505）; 以补偿多个循环自相关（504'）中的至少一个的相位偏移至少一个补偿项（506）以获得多个相位补偿自相关（504），其中所述补偿项（506）依赖于 循环频率（503）和所述至少两个延迟值的相应延迟值; 并组合多个相位补偿自相关。
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公开(公告)号：US11653221B2
公开(公告)日：2023-05-16
申请号：US16804104
申请日：2020-02-28
Inventor： Matthew J. Sherman
CPC classification number: H04W16/18 , G06N3/006 , G06N5/04 , H04W24/08 , H04B2201/692
Abstract: A system and method of cognitive radio control to allow for low probability of detection and/or low probability of exploitation communications in a contested or hostile environment. The cognitive radio system of the present disclosure can reason over policy constraints and real-time data to make dynamic changes to mission parameters in real-time.
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公开(公告)号：US20140328325A1
公开(公告)日：2014-11-06
申请号：US14365202
申请日：2012-09-11
Applicant: Wenling BAI , Zhuo GAO , Chenggang JIANG , Yuanyuan LI , Yu YANG
Inventor： Wenling BAI , Zhuo GAO , Chenggang JIANG , Yuanyuan LI , Yu YANG
CPC classification number: H04W74/0833 , H04B2201/692 , H04W36/0055 , H04W36/0077 , H04W36/04 , H04W36/06 , H04W74/008 , H04W74/085
Abstract: Various examples of the present disclosure describe a random access method and device in a CR system. The method includes: generating, by a base station device, a spectrum handover command, wherein the spectrum handover command comprises random access backoff time parameter information; and sending, by the base station device, the spectrum handover command to a user equipment in a cell to instruct the UE to initiate, during a spectrum handover procedure, a random access procedure using the random access backoff time parameter information. According to the various examples of the present disclosure, the random access backoff time parameter information is carried in the spectrum handover command, so that a random access conflict is suppressed during the spectrum handover procedure of the CR system. A large number of UEs that intensively perform random access on a target working frequency are pre-dispersed in time. As such, the delay and the failure probability of the random access on the target working frequency during the spectrum handover procedure are reduced, and thus the failure probability of the spectrum handover and the service interruption time are reduced, so that the user experience of the CR system is improved.
Abstract translation: 本公开的各种示例描述了CR系统中的随机接入方法和设备。 该方法包括：由基站装置生成频谱切换命令，其中频谱切换命令包括随机接入退避时间参数信息; 以及由所述基站装置向所述小区中的用户设备发送所述频谱切换命令，以指示所述UE在频谱切换过程期间使用所述随机接入退避时间参数信息来发起随机接入过程。 根据本公开的各种示例，在频谱切换命令中携带随机接入退避时间参数信息，从而在CR系统的频谱切换过程期间抑制随机接入冲突。 在目标工作频率上集中执行随机访问的大量UE预先分散在时间上。 因此，在频谱切换过程中随机接入对目标工作频率的延迟和故障概率降低，从而降低了频谱切换和业务中断时间的故障概率，使得用户体验 CR系统得到改进。
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公开(公告)号：US09124480B2
公开(公告)日：2015-09-01
申请号：US14351080
申请日：2011-10-19
Applicant: Vesa Turunen
Inventor： Vesa Turunen
CPC classification number: H04L27/2663 , H04B1/707 , H04B2201/692 , H04L27/2607
Abstract: In accordance with an example embodiment of the present invention the application discloses a method and an apparatus to receive a signal (501) in a radio device on a radio channel; calculate a plurality of cyclic autocorrelations (504′, 505) for the received signal (501), wherein calculating the plurality of cyclic autocorrelations comprises selecting a cyclic frequency (503) and at least two delay values (502, 512) corresponding to the plurality of cyclic autocorrelations (504′, 505); to compensate a phase offset of at least one of the plurality of cyclic autocorrelations (504′) by at least one compensation term (506) to obtain a plurality of phase compensated autocorrelations (504), wherein the compensation term (506) is dependent on the cyclic frequency (503) and a corresponding delay value of the at least two delay values; and to combine the plurality of phase compensated autocorrelations.
Abstract translation: 根据本发明的示例性实施例，本申请公开了一种在无线电信道上的无线电设备中接收信号（501）的方法和装置; 计算所述接收信号（501）的多个循环自相关（504'，505），其中计算所述多个循环自相关包括选择与多个循环自相关对应的循环频率（503）和至少两个延迟值（502,512） 的循环自相关（504'，505）; 以补偿多个循环自相关（504'）中的至少一个的相位偏移至少一个补偿项（506），以获得多个相位补偿自相关（504），其中所述补偿项（506）依赖于 循环频率（503）和所述至少两个延迟值的相应延迟值; 并组合多个相位补偿自相关。
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公开(公告)号：US09094837B2
公开(公告)日：2015-07-28
申请号：US12796683
申请日：2010-06-09
Applicant: Ranveer Chandra , Thomas Moscibroda , Xiaohui Wang
Inventor： Ranveer Chandra , Thomas Moscibroda , Xiaohui Wang
CPC classification number: H04W24/00 , H04B2201/692 , H04J11/0056 , H04L5/0007 , H04L27/0006 , H04W72/00 , H04W72/0453 , H04W72/048
Abstract: There is provided a computer-implemented method for transmitting data over a wireless network using white spaces. A first white space transmission channel is determined for communicating with mobile client devices. Wireless communication takes place with the mobile client devices over the first white space transmission channel. If the first white space transmission channel becomes unavailable to one of the mobile client devices because of the presence of a primary user on the first white space transmission channel, a different white space transmission channel is determined for communicating with the mobile client device that is affected. The first white space transmission channel may become unavailable to the affected mobile client device, for example, because a primary user begins using the first white space transmission channel in proximity to the affected device. The primary user may be a wireless microphone. Thereafter, communication with the affected wireless device takes place on the different white space transmission channel, while unaffected devices continue to communicate on the first white space transmission channel. Also provided are an exemplary wireless base station and an exemplary mobile client device.
Abstract translation: 提供了一种用于通过无线网络使用空格来发送数据的计算机实现的方法。 确定用于与移动客户端设备通信的第一空白传输信道。 移动客户端设备通过第一个空白传输信道进行无线通信。 如果第一空白传输信道由于第一空白传输信道上的主用户的存在而变得不能用于移动客户端设备之一，则确定不同的空白传输信道用于与受影响的移动客户端设备进行通信 。 受影响的移动客户端设备的第一个空白传输信道可能变得不可用，例如，因为主用户开始在受影响的设备附近使用第一个空白传输信道。 主要用户可以是无线麦克风。 此后，与受影响的无线设备的通信发生在不同的空白传输信道上，而未受影响的设备在第一空白传输信道上继续通信。 还提供了示例性无线基站和示例性移动客户端设备。
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Patent Agency Ranking
公开(公告)号：US20150071328A1
公开(公告)日：2015-03-12
申请号：US14025763
申请日：2013-09-12
Applicant: KING ABULAZIZ CITY FOR SCIENCE AND TECHNOLOGY , KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
Inventor： ZAHID SALEEM , SAMIR AL-GHADHBAN , TAREQ Y. AL-NAFFOURI
IPC: H04B1/10
CPC classification number: H04W16/14 , G06K9/00516 , G06K9/0053 , G06K9/0057 , H04B1/719 , H04B2201/692 , H04L27/0004 , H04L27/0006
Abstract: The peak detection method using blind source separation extracts true peaks from noisy peaks in a more robust way that does not require any a priori information. Information regarding true peak location is obtained by thresholding the output of a wavelet transform. The value of the threshold is dependent on noise variance. While noise variance is normally unknown, the present method implements a blind source separation technique to calculate the noise variance. The blind source separation technique does not require information of the incoming signal or the channel noise, and hence is suitable for CR (cognitive radio) peak detection.
Abstract translation: 使用盲源分离的峰检测方法以更鲁棒的方式从噪声峰提取真实峰值，其不需要任何先验信息。 通过阈值化小波变换的输出来获得关于真峰位置的信息。 阈值取决于噪声方差。 虽然噪声方差通常是未知的，但是本方法实现了盲源分离技术来计算噪声方差。 盲源分离技术不需要输入信号或信道噪声的信息，因此适用于CR（认知无线电）峰值检测。
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公开(公告)号：US08958750B1
公开(公告)日：2015-02-17
申请号：US14025763
申请日：2013-09-12
Applicant: King Fahd University of Petroleum and Minerals , King Abdulaziz City for Science and Technology
Inventor： Zahid Saleem , Samir Al-Ghadhban , Tareq Y. Al-Naffouri
CPC classification number: H04W16/14 , G06K9/00516 , G06K9/0053 , G06K9/0057 , H04B1/719 , H04B2201/692 , H04L27/0004 , H04L27/0006
Abstract: The peak detection method using blind source separation extracts true peaks from noisy peaks in a more robust way that does not require any a priori information. Information regarding true peak location is obtained by thresholding the output of a wavelet transform. The value of the threshold is dependent on noise variance. While noise variance is normally unknown, the present method implements a blind source separation technique to calculate the noise variance. The blind source separation technique does not require information of the incoming signal or the channel noise, and hence is suitable for CR (cognitive radio) peak detection.
Abstract translation: 使用盲源分离的峰检测方法以更鲁棒的方式从噪声峰提取真实峰值，其不需要任何先验信息。 通过阈值化小波变换的输出来获得关于真峰位置的信息。 阈值取决于噪声方差。 虽然噪声方差通常是未知的，但是本方法实现了盲源分离技术来计算噪声方差。 盲源分离技术不需要输入信号或信道噪声的信息，因此适用于CR（认知无线电）峰值检测。
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公开(公告)号：US20130336364A1
公开(公告)日：2013-12-19
申请号：US13133942
申请日：2011-01-28
Applicant: Ezekiel Kruglick
Inventor： Ezekiel Kruglick
IPC: H04B1/707
CPC classification number: H04B1/707 , H04B1/69 , H04B2001/6912 , H04B2201/692 , H04W16/14 , Y02D70/142 , Y02D70/22 , Y02D70/40
Abstract: Technologies are generally described for cognitive radio spectrum sensing via Code Division Multiple Access (CDMA) receiver coding. A CDMA module in the front-end of a cognitive radio system may be used to sense spectrum. When the system is not decoding or transmitting signals, a modified CDMA receiver coding may replace a pseudorandom code used in decoding with relatively pure, non-random detection frequency to scan for energy from primary users of the spectrum. Multiplication of the received signal by spectrally pure codes in place of the CDMA code renders the CDMA processor effectively a scanning spectrum analyzer and may detect energy at multiple frequencies. The allocation of sub-bands and/or timing may be adjusted to account for the detected energy.
Abstract translation: 通常通过码分多址（CDMA）接收机编码来描述用于认知无线电频谱感测的技术。 认知无线电系统前端的CDMA模块可用于感测频谱。 当系统不解码或发送信号时，修改的CDMA接收机编码可以用相对纯的非随机检测频率代替用于解码的伪随机码，以扫描来自频谱的主要用户的能量。 通过频谱纯码代替CDMA码对接收信号的乘法使得CDMA处理器有效地实现了扫描频谱分析仪，并且可以检测多个频率的能量。 可以调整子带和/或定时的分配以考虑检测到的能量。
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公开(公告)号：US09992048B2
公开(公告)日：2018-06-05
申请号：US15088431
申请日：2016-04-01
Inventor： Fei Hu , Mengcheng Guo
IPC: H04B1/00 , H04L27/00 , H04B1/7103
CPC classification number: H04L27/0006 , H04B1/69 , H04B1/7103 , H04B2201/692 , H04B2201/709709
Abstract: Systems and methods for cognitive radio spectrum sensing of a signal are disclosed herein. On exemplary method comprises applying a pre-defined cyclostationary feature to detect the presence of the signal; detecting the signal; detecting a spectrum associated with the signal; sampling randomly the detected signal from its cyclic frequency domain; and applying a compressive sensing algorithm to classify the signal based on the cyclostationary feature. The signal can be sparse in time, space, frequency, or code domains. Thereby, the systems and methods described in the present disclosure involve exploiting compressive sensing in a specific sparse domain (i.e., cyclic domain) and also utilize a cyclostationary feature based compressive spectrum sensing scheme to perform spectrum analysis.
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公开(公告)号：US09210726B2
公开(公告)日：2015-12-08
申请号：US14365202
申请日：2012-09-11
Applicant: Wenling Bai , Zhuo Gao , Chenggang Jiang , Yuanyuan Li , Yu Yang
Inventor： Wenling Bai , Zhuo Gao , Chenggang Jiang , Yuanyuan Li , Yu Yang
CPC classification number: H04W74/0833 , H04B2201/692 , H04W36/0055 , H04W36/0077 , H04W36/04 , H04W36/06 , H04W74/008 , H04W74/085
Abstract: Various examples of the present disclosure describe a random access method and device in a CR system. The method includes: generating, by a base station device, a spectrum handover command, wherein the spectrum handover command comprises random access backoff time parameter information; and sending, by the base station device, the spectrum handover command to a user equipment in a cell to instruct the UE to initiate, during a spectrum handover procedure, a random access procedure using the random access backoff time parameter information. According to the various examples of the present disclosure, the random access backoff time parameter information is carried in the spectrum handover command, so that a random access conflict is suppressed during the spectrum handover procedure of the CR system. A large number of UEs that intensively perform random access on a target working frequency are pre-dispersed in time. As such, the delay and the failure probability of the random access on the target working frequency during the spectrum handover procedure are reduced, and thus the failure probability of the spectrum handover and the service interruption time are reduced, so that the user experience of the CR system is improved.
Abstract translation: 本公开的各种示例描述了CR系统中的随机访问方法和设备。 该方法包括：由基站装置生成频谱切换命令，其中频谱切换命令包括随机接入退避时间参数信息; 以及由所述基站装置向所述小区中的用户设备发送所述频谱切换命令，以指示所述UE在频谱切换过程期间使用所述随机接入退避时间参数信息来发起随机接入过程。 根据本公开的各种示例，在频谱切换命令中携带随机接入退避时间参数信息，从而在CR系统的频谱切换过程期间抑制随机接入冲突。 在目标工作频率上集中执行随机访问的大量UE预先分散在时间上。 因此，在频谱切换过程中随机接入对目标工作频率的延迟和故障概率降低，从而降低了频谱切换和业务中断时间的故障概率，使得用户体验 CR系统得到改进。
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