公开(公告)号：US20090197626A1

公开(公告)日：2009-08-06

申请号：US12012726

申请日：2008-02-04

申请人： Anu Huttunen ,  Aarno Parssinen

发明人： Anu Huttunen ,  Aarno Parssinen

IPC分类号： H04B7/00

CPC分类号： H04W72/02 ,  H04W16/14 ,  H04W72/082 ,  Y02D70/00

摘要： In a cognitive radio environment with at least three cognitive radio terminals, terminals 1 and 2 have an active link. Terminal 3 estimates the link quality, and if it is deemed good terminal 3 transmits over the frequency band in use on the link. Terminal 3 then monitors the link between terminals 1 and 2 to quantify its interference on it. If no interference is detected terminal 3 can increase its power. If terminals 1 and 2 change their modulation terminal 3 deems its interference too severe and either reduces power or finds another frequency band. Terminal 3 can use blind modulation detection for the link between terminals 1 and 2, and estimate link quality based on the type of modulation in use.

摘要翻译： 在具有至少三个认知无线电终端的认知无线电环境中，终端1和2具有主动链路。 终端3估计链路质量，如果被认为是良好的终端3，则通过链路上使用的频带进行发送。 终端3然后监视终端1和2之间的链路，以量化其对它的干扰。 如果没有检测到干扰，终端3可以增加其功率。 如果终端1和2改变它们的调制终端3认为其干扰太严重，并且降低功率或找到另一个频带。 终端3可以对终端1和2之间的链路使用盲调制检测，并且基于使用的调制类型来估计链路质量。

公开(公告)号：US08897715B2

公开(公告)日：2014-11-25

申请号：US13146892

申请日：2009-01-28

申请人： Juha Pihlaja ,  Anu Huttunen

发明人： Juha Pihlaja ,  Anu Huttunen

IPC分类号： H04B17/00 ,  H04W16/14 ,  H04W24/10

CPC分类号： H04W16/14 ,  H04W24/10

摘要： An apparatus configured to operate under cognitive radio principles. The apparatus includes a processor configured to perform spectrum sensing in the apparatus to produce spectrum sensing data; and first circuitry configured to share the spectrum sensing data with other apparata.

摘要翻译： 一种被配置为在认知无线电原理下操作的装置。 所述装置包括被配置为在所述装置中执行频谱感测以产生频谱感测数据的处理器; 以及被配置为与其他设备共享频谱感测数据的第一电路。

公开(公告)号：US08391881B2

公开(公告)日：2013-03-05

申请号：US12012726

申请日：2008-02-04

申请人： Anu Huttunen ,  Aarno Pärssinen

发明人： Anu Huttunen ,  Aarno Pärssinen

IPC分类号： H04W72/00 ,  H04B17/00

CPC分类号： H04W72/02 ,  H04W16/14 ,  H04W72/082 ,  Y02D70/00

摘要： In a cognitive radio environment with at least three cognitive radio terminals, terminals 1 and 2 have an active link. Terminal 3 estimates the link quality, and if it is deemed good terminal 3 transmits over the frequency band in use on the link. Terminal 3 then monitors the link between terminals 1 and 2 to quantify its interference on it. If no interference is detected terminal 3 can increase its power. If terminals 1 and 2 change their modulation terminal 3 deems its interference too severe and either reduces power or finds another frequency band. Terminal 3 can use blind modulation detection for the link between terminals 1 and 2, and estimate link quality based on the type of modulation in use.

公开(公告)号：US08335474B2

公开(公告)日：2012-12-18

申请号：US12322255

申请日：2009-01-30

申请人： Anu Huttunen ,  Visa Koivunen ,  Jarmo Rafael Lundén

发明人： Anu Huttunen ,  Visa Koivunen ,  Jarmo Rafael Lundén

IPC分类号： H04B15/00

CPC分类号： H04L5/0062

摘要： A user equipment senses a plurality of wireless signals it receives; estimates cyclic correlation of the received signals using a multi-variate sign function; determines from the estimated cyclic correlation which ones of the signals are detected based on cyclostationarity present at known cyclic frequencies; and a frequency resource is selected for opportunistic communications based on the frequencies over which were received the signals that were determined to be detected. In specific embodiments, the multi-variate sign function is bivariate; the detected signals are primary user signals and the selected frequency resource avoids frequencies on which they were received; and/or the detected signals are secondary user signals and the selected frequency resource can either avoid those frequencies on which they were received or use those frequencies for the UE's own opportunistic communications.

摘要翻译： 用户设备感测到其接收的多个无线信号; 使用多变量符号函数估计接收信号的循环相关; 根据估计的循环相关性确定基于在已知循环频率下存在的周期平稳性来检测哪些信号; 并且基于接收到被确定为被检测的信号的频率来选择用于机会通信的频率资源。 在具体实施例中，多变量符号函数是双变量的; 检测到的信号是主用户信号，所选择的频率资源避免了它们被接收的频率; 和/或检测到的信号是次要用户信号，并且所选择的频率资源可以避免它们被接收到的那些频率或者使用这些频率用于UE自己的机会性通信。

公开(公告)号：US20120129462A1

公开(公告)日：2012-05-24

申请号：US13146892

申请日：2009-01-28

申请人： Juha Pihlaja ,  Anu Huttunen

发明人： Juha Pihlaja ,  Anu Huttunen

IPC分类号： H04B17/00

CPC分类号： H04W16/14 ,  H04W24/10

摘要： An apparatus configured to operate under cognitive radio principles. The apparatus includes a processor configured to perform spectrum sensing in the apparatus to produce spectrum sensing data; and first circuitry configured to share the spectrum sensing data with other apparata.

摘要翻译： 一种被配置为在认知无线电原理下操作的装置。 所述装置包括被配置为在所述装置中执行频谱感测以产生频谱感测数据的处理器; 以及被配置为与其他设备共享频谱感测数据的第一电路。

公开(公告)号：US07949357B2

公开(公告)日：2011-05-24

申请号：US12001623

申请日：2007-12-11

申请人： Anu Huttunen ,  Niko Kiukkonen ,  Visa Koivunen

发明人： Anu Huttunen ,  Niko Kiukkonen ,  Visa Koivunen

IPC分类号： H04B7/00 ,  H04W72/00

CPC分类号： H04W24/10 ,  H04W72/04

摘要： In a first time interval TI a first frequency band FB is pseudorandomly selected from a designated spectrum, and a first analysis result is determined by sensing the first FB during the first TI and then transmitted. In a second TI a second FB is pseudorandomly selected from the designated spectrum, and a second analysis result is determined by sensing the second FB during the second TI and then transmitted. Where multiple devices do this the entire spectrum is sensed, each band by a subset of devices that changes at each TI, and so any unused or underutilized spectrum is searched by the collaborative spectrum sensing, which avoids propagation problems such as fading. Also, a central node can assure various collaborating users report different FBs in different TIs such that the subset of reporting users changes for at least one of the bands in each subsequent reporting TI. Sensing and communication can be performed in different portions of the same network defined transmission time interval.

摘要翻译： 在第一时间间隔TI中，从指定频谱伪随机选择第一频带FB，并且通过在第一TI期间感测第一FB然后发送来确定第一分析结果。 在第二TI中，从指定频谱伪随机地选择第二FB，并且通过在第二TI期间感测第二FB然后发送来确定第二分析结果。 在多个设备进行此操作的情况下，将检测整个频谱，每个频带由在每个TI变化的设备子集，以及任何未使用或未充分利用的频谱进行搜索，通过协作频谱感测来进行搜索，从而避免传播问题，例如衰落。 此外，中央节点可以确保各种协作用户在不同TI中报告不同的FB，使得每个后续报告TI中的至少一个频带的报告用户的子集改变。 可以在相同网络定义的传输时间间隔的不同部分执行传感和通信。

公开(公告)号：US20090149208A1

公开(公告)日：2009-06-11

申请号：US12001623

申请日：2007-12-11

申请人： Anu Huttunen ,  Niko Kiukkonen ,  Visa Koivunen

发明人： Anu Huttunen ,  Niko Kiukkonen ,  Visa Koivunen

IPC分类号： H04Q7/20 ,  H04B17/00

CPC分类号： H04W24/10 ,  H04W72/04

摘要： In a first time interval TI a first frequency band FB is pseudorandomly selected from a designated spectrum, and a first analysis result is determined by sensing the first FB during the first TI and then transmitted. In a second TI a second FB is pseudorandomly selected from the designated spectrum, and a second analysis result is determined by sensing the second FB during the second TI and then transmitted. Where multiple devices do this the entire spectrum is sensed, each band by a subset of devices that changes at each TI, and so any unused or underutilized spectrum is searched by the collaborative spectrum sensing, which avoids propagation problems such as fading. Also, a central node can assure various collaborating users report different FBs in different TIs such that the subset of reporting users changes for at least one of the bands in each subsequent reporting TI. Sensing and communication can be performed in different portions of the same network defined transmission time interval.

摘要翻译： 在第一时间间隔TI中，从指定频谱伪随机选择第一频带FB，并且通过在第一TI期间感测第一FB然后发送来确定第一分析结果。 在第二TI中，从指定频谱伪随机地选择第二FB，并且通过在第二TI期间感测第二FB然后发送来确定第二分析结果。 在多个设备进行此操作的情况下，将检测整个频谱，每个频带由在每个TI变化的设备子集，以及任何未使用或未充分利用的频谱进行搜索，通过协作频谱感测来进行搜索，从而避免传播问题，例如衰落。 此外，中央节点可以确保各种协作用户在不同TI中报告不同的FB，使得每个后续报告TI中的至少一个频带的报告用户的子集改变。 可以在相同网络定义的传输时间间隔的不同部分执行传感和通信。

公开(公告)号：US20100054352A1

公开(公告)日：2010-03-04

申请号：US12231226

申请日：2008-08-28

申请人： Anu Huttunen ,  Jari Junell ,  Marko Kosunen

发明人： Anu Huttunen ,  Jari Junell ,  Marko Kosunen

IPC分类号： H03D1/00 ,  H04L27/28

CPC分类号： H04L27/0006

摘要： Samples are extracted from a received signal. For each of a plurality of candidate cyclic frequencies, cyclic covariance of the received signal is determined using a Fourier transform FT having a length that is less than the number of extracted samples. The frequency channel within which the signal was received is chosen for opportunistic/cognitive radio transmissions when none of the plurality of candidate cyclic frequencies exhibits a peak that exceeds a threshold, or results are transmitted for collaborative sensing. The extracted samples may be filtered and decimated prior to executing the FT, and the length of the FT depends on the number of samples that remain. Decimating is at a rate that depends on a bandwidth of the filtering. The bandwidth of filtering is determined by the lowest cyclic frequency where the signal to be detected exhibits cyclostationarity. Each of the candidate cyclic frequencies are near zero and determining the covariance employs a windowing function centered on zero cyclic frequency.

摘要翻译： 从接收到的信号中提取样本。 对于多个候选循环频率中的每一个，使用具有小于提取样本数的长度的傅里叶变换FT来确定接收信号的循环协方差。 当多个候选循环频率中没有一个表现出超过阈值的峰值时，选择接收信号的频率信道用于机会/认知无线电传输，或者发送用于协作感测的结果。 提取的样本可以在执行FT之前被过滤和抽取，并且FT的长度取决于保留的样本的数量。 抽取的速率取决于过滤的带宽。 滤波带宽由待检测信号呈现周期平稳性的最低周期频率决定。 每个候选循环频率接近于零，并且确定协方差采用以零循环频率为中心的加窗函数。