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1. 发明申请

WO2010047998A3 METHOD AND DEVICE FOR DETECTING PRESENCE OF A CARRIER IN A RECEIVED SIGNAL 审中-公开
标题翻译：检测接收信号中载波出现的方法和装置
公开(公告)号：WO2010047998A3
公开(公告)日：2010-07-08
申请号：PCT/US2009060453
申请日：2009-10-13
申请人： MOTOROLA INC , THAMPI GEETHA K , CHAUDHRI APOORV , CORRETJER JESUS F , RAO YADUNANDANA N
发明人： THAMPI GEETHA K , CHAUDHRI APOORV , CORRETJER JESUS F , RAO YADUNANDANA N
IPC分类号： H04B1/16 , H04L25/02
CPC分类号： H04L27/0014 , H04L27/3845
摘要： A device receives a signal and, prior to demodulating the signal determines whether carrier is present in the received signal based on the correlation depth of the received signal. The device determines (210) a plurality of values for the received signal that indicate the amount of correlation in the received signal and detects the presence of the carrier in the received signal as a function of the plurality of values. The plurality of values can include autocorrelation values and prediction coefficients, wherein the autocorrelation values are estimated based on an autocorrelation function derived for the received signal, and the prediction coefficients are generated using a prediction model that is derived as a function of the autocorrelation values. The prediction coefficients can be summed to generate (224) a decision statistic that is compared (228) to a detection threshold to detect the presence of the carrier.
摘要翻译：设备接收信号，并在解调之前基于接收信号的相关深度来确定接收信号中是否存在载波。该设备确定（210）接收信号的多个值，该值指示接收信号中的相关量，并根据多个值检测接收信号中载波的存在。多个值可以包括自相关值和预测系数，其中自相关值是基于针对接收信号导出的自相关函数来估计的，并且使用作为自相关值的函数导出的预测模型来生成预测系数。可以将预测系数相加以生成（224）与检测阈值进行比较（228）以检测载波的存在的判决统计量。

2. 发明申请

WO2010099004A2 NARROWBAND SYSTEM AND METHOD FOR DEFINING NARROWBAND CHANNELS IN UNUSED WIDEBAND CHANNELS 审中-公开
标题翻译：用于定义未使用的宽带信道中的窄带信道的窄带系统和方法
公开(公告)号：WO2010099004A2
公开(公告)日：2010-09-02
申请号：PCT/US2010024384
申请日：2010-02-17
申请人： MOTOROLA INC , RAO YADUNANDANA N , CHAUDHRI APOORV , THAMPI GEETHA K
发明人： RAO YADUNANDANA N , CHAUDHRI APOORV , THAMPI GEETHA K
IPC分类号： H04W72/04 , H04W24/10
CPC分类号： H04W24/10 , H04W8/005 , H04W16/14 , H04W64/00 , H04W72/00 , H04W72/04
摘要： A narrowband communication system (100) includes a base station (102) and a plurality of subscriber units (104). The base station assigns one or more wideband channels to be measured to each subscriber unit (606). The subscriber units tune to their assigned wideband channels and perform narrowband measurements, then report the results to the base station (612). The base station then analyzes the measurement results (614) and selects available wideband channels to be divided into narrowband channels for use by the narrowband system.
摘要翻译：窄带通信系统（100）包括基站（102）和多个用户单元（104）。基站为每个用户单元分配一个或多个要测量的宽带信道（606）。用户单元调谐到其分配的宽带信道并执行窄带测量，然后将结果报告给基站（612）。然后，基站分析测量结果（614），并选择可用的宽带信道分成窄带信道供窄带系统使用。

3. 发明申请

WO2010039352A3 METHOD AND APPARATUS FOR OPTIMIZING SPECTRUM UTILIZATION BY A COGNITIVE RADIO NETWORK 审中-公开
标题翻译：通过认知无线电网络优化频谱利用的方法和装置
公开(公告)号：WO2010039352A3
公开(公告)日：2010-05-27
申请号：PCT/US2009054720
申请日：2009-08-24
申请人： MOTOROLA INC , CHAUDHRI APOORV , GURNEY DAVID P , KUFFNER STEPHEN L , RAO YADUNANDANA N , SIMMS MATTHEW E
发明人： CHAUDHRI APOORV , GURNEY DAVID P , KUFFNER STEPHEN L , RAO YADUNANDANA N , SIMMS MATTHEW E
IPC分类号： H04W16/14 , H04W72/02
CPC分类号： H04W72/082 , H04W4/02 , H04W8/205 , H04W16/14 , H04W48/20 , H04W72/02
摘要： A technique for a secondary communication system to utilize spectrum designated to another (or primary) communication system is provided. By ranking a plurality of secondary base stations based on base station transmit power, calculated required transmit power and path loss, a set of criteria is developed for selecting a highest ranked secondary base station for operation within a primary's spectrum. The ranking may be adapted based on mobility of the secondary's subscriber; and as such the secondary system communicates within the primary's spectrum using the adaptively ranked base stations. Channel selection may also be ranked. The technique and apparatus allows a cognitive radio (CR) network to operate within an incumbent network's spectrum.
摘要翻译：提供了一种次要通信系统利用指定给另一（通信）通信系统的频谱的技术。通过基于基站发射功率，计算的所需发射功率和路径损耗对多个次基站进行排序，开发了用于选择最高等级次级基站以在主频谱内操作的一组标准。可以基于辅助用户的移动性来调整排名; 并且因此次级系统使用自适应排名的基站在主频谱内进行通信。频道选择也可能被排名。该技术和装置允许认知无线电（CR）网络在现有网络的频谱范围内运行。

4. 发明申请

WO2009155016A2 COEXISTENCE AND INCUMBENT PROTECTION IN A COGNITIVE RADIO NETWORK 审中-公开
标题翻译：认知无线电网络中的共同保护和有害保护
公开(公告)号：WO2009155016A2
公开(公告)日：2009-12-23
申请号：PCT/US2009045369
申请日：2009-05-28
申请人： MOTOROLA INC , CHAUDHRI APOORV , GURNEY DAVID P , RAO YADUNANDANA N
发明人： CHAUDHRI APOORV , GURNEY DAVID P , RAO YADUNANDANA N
IPC分类号： H04W16/14
CPC分类号： H04W16/14 , H04W52/243 , H04W52/281 , H04W52/283 , H04W52/367 , H04W72/0453 , H04W72/0473
摘要： A method (300, 400) and a communication system (104, 106, 200) for dynamic RF spectrum allocation among a plurality of RF transmitters (108, 110, 112). A message can be received from a first communication system. The message can include a request (130) for available RF spectrum over which to transmit RF signals. The message can indicate a geographic location of a first non-incumbent transmitter (112) associated with the first communication system. Further, for the RF spectrum, a maximum power level can be determined at which the first non-incumbent transmitter may transmit without exceeding a threshold level of interference at at least one focal point (134). A RF spectrum list (138) identifying at least the RF spectrum and the determined maximum power level can be communicated to the first communication system.
摘要翻译：一种用于多个RF发射机（108,110,112）中的动态RF频谱分配的方法（300,400）和通信系统（104,106,200）。可以从第一通信系统接收消息。消息可以包括用于发射RF信号的可用RF频谱的请求（130）。该消息可以指示与第一通信系统相关联的第一非现在发射机（112）的地理位置。此外，对于RF频谱，可以确定第一非现在发射机可以在哪个第一非现在发射机可以在不超过至少一个焦点（134）处的阈值干扰电平的情况下发射的最大功率电平。识别至少RF频谱和确定的最大功率电平的RF频谱列表（138）可被传送到第一通信系统。

5. 发明申请

WO2010117555A2 DYNAMIC SPECTRUM ALLOCATION (DSA) IN A COMMUNICATION NETWORK 审中-公开
标题翻译：通信网络中的动态频谱分配（DSA）
公开(公告)号：WO2010117555A2
公开(公告)日：2010-10-14
申请号：PCT/US2010027271
申请日：2010-03-15
申请人： MOTOROLA INC , CHAUDHRI APOORV , RAO YADUNANDANA N
发明人： CHAUDHRI APOORV , RAO YADUNANDANA N
IPC分类号： H04W72/04
CPC分类号： H04W72/06 , H04W16/10 , H04W16/14 , H04W28/18
摘要： A method of dynamically allocating RF communication channels to a wireless communication device (102). A plurality of dynamic spectrum allocation (DSA) channels (222, 224) can be identified. The DSA channels can be channels that are available to a non-incumbent user to be used for RF communications. Based on at least one required channel parameter, a DSA channel can be selected as a first channel to allocate to the wireless communication device. At least a second channel can be selected to allocate to the wireless communication device based on a spectral relationship between the first channel and the second channel to ensure that the first and second channels are separated by at least a minimum required frequency separation (216).
摘要翻译：一种向无线通信设备（102）动态地分配RF通信信道的方法。可以识别多个动态频谱分配（DSA）信道（222,224）。 DSA频道可以是非现有用户可用于RF通信的频道。基于至少一个所需的信道参数，可以选择DSA信道作为分配给无线通信设备的第一信道。可以基于第一信道和第二信道之间的频谱关系来选择至少第二信道来分配给无线通信设备，以确保第一和第二信道至少分离最小所需频率间隔（216）。

6. 发明申请

WO2010002606A2 METHOD AND APPARATUS FOR DETECTION OF ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) SIGNALS BY COGNITIVE RADIOS 审中-公开
标题翻译：用于通过认知无线电探测正交频分复用（OFDM）信号的方法和装置
公开(公告)号：WO2010002606A2
公开(公告)日：2010-01-07
申请号：PCT/US2009047874
申请日：2009-06-19
申请人： MOTOROLA INC , RAO YADUNANDANA N , CHAUDHRI APOORV , CORKE ROBERT J
发明人： RAO YADUNANDANA N , CHAUDHRI APOORV , CORKE ROBERT J
IPC分类号： H04L27/26 , H04W16/14
CPC分类号： H04L5/0062 , H04L5/0007 , H04L27/0012
摘要： Efficient frequency spectrum sharing between at least one incumbent communication system(s) (102, 104) and at least one cognitive radio (CR) system (106, 108) is provided. The CR unit includes OFDM detection (216) for detecting the presence of OFDM signals which indicate the presence of an incumbent communication system within the shared spectrum. The CR system (106) updates channel occupancy information in response to the detected OFDM signals so as not to interfere with the incumbent communication systems (102, 104).
摘要翻译：提供了至少一个现有通信系统（102,104）和至少一个认知无线电（CR）系统（106,108）之间的有效的频谱共享。 CR单元包括用于检测表示共享频谱内现有通信系统的存在的OFDM信号的存在的OFDM检测（216）。 CR系统（106）响应于检测到的OFDM信号来更新信道占用信息，以便不干扰现有的通信系统（102,104）。

7. 发明申请

WO2010033333A3 METHOD AND APPARATUS FOR DISTRIBUTED SENSING MANAGEMENT AND CONTROL WITHIN A COGNITIVE RADIO NETWORK 审中-公开
标题翻译：用于认知无线电网络中分布式感应管理和控制的方法与装置
公开(公告)号：WO2010033333A3
公开(公告)日：2010-06-10
申请号：PCT/US2009054131
申请日：2009-08-18
申请人： MOTOROLA INC , CHAUDHRI APOORV , ANDRIC OLEG , RAO YADUNANDANA N
发明人： CHAUDHRI APOORV , ANDRIC OLEG , RAO YADUNANDANA N
IPC分类号： H04W16/14 , H04W24/10
CPC分类号： H04W16/14 , H04W24/10 , H04W72/06
摘要： A technique for spectrum sensing management and control for a secondary communication system seeking to utilize another communication system's spectrum is provided (600). Sensor control data is sent from a base station to subscriber units (604). Sensing measurements are taken and sent back to the base station for ranking (608) as sensed feedback information. Comparisons of the sensed feedback information are made to each other and to thresholds aligned with the types of measurements taken (610). An initial ranked channel list is generated (612). Weighting of the initial ranking list and secondary ranking list is followed by re-ranking the channels according to the weighting into a final ranking list (612). The final ranking list is transmitted to the mobile units to enable operation within the other communication system's spectrum within interfering with that system (614). The weighting is based on the type of sensing measurement taken as opposed to the channel.
摘要翻译：提供了一种用于寻求利用另一种通信系统频谱的二次通信系统的频谱感测管理和控制技术（600）。传感器控制数据从基站发送到用户单元（604）。采集感测测量并将其发送回基站，以便将其作为检测到的反馈信息进行排序（608）。对所感测的反馈信息进行比较，并且与所采取的测量类型对准的阈值（610）。生成初始排名的频道列表（612）。初始排名表和次级排名表的加权之后，根据加权将信道重新排列成最终排名表（612）。最终排名列表被发送到移动单元以使得能够在干扰该系统的其它通信系统的频谱内进行操作（614）。加权取决于与通道相反的感测测量类型。

8. 发明申请

WO2008016774A3 METHOD AND SYSTEM FOR GRANTING CHANNEL SLOTS 审中-公开
标题翻译：用于分配通道的方法和系统
公开(公告)号：WO2008016774A3
公开(公告)日：2008-03-20
申请号：PCT/US2007073584
申请日：2007-07-16
申请人： MOTOROLA INC , RAO YADUNANDANA N , CHAUDHRI APOORV , LAMPERT CHET A
发明人： RAO YADUNANDANA N , CHAUDHRI APOORV , LAMPERT CHET A
IPC分类号： H04W52/02 , H04W72/12
CPC分类号： H04W72/048 , H04W52/0216 , H04W52/0219 , H04W52/0258 , H04W72/042 , Y02D70/00 , Y02D70/1224 , Y02D70/142
摘要： A system (100) and method (500) for method for channel slot granting is provided. The method includes estimating (502) a temperature of a device (102), adjusting (504) a duty-cycle of the device based on the temperature, sending (506) the duty-cycle to a base station (110) and allocating (510) time slots for the device in accordance with the duty-cycle. A rate of slot assignments to multiple devices can be controlled (512) based on multiple duty-cycles received. The duty-cycle and temperature can be included (610) in a Quality of Service (QoS) metric for inbound and outbound performance.
摘要翻译：提供了一种用于通道槽授予方法的系统（100）和方法（500）。该方法包括估计（502）装置（102）的温度，基于温度调整（504）装置的占空比，将占空比发送（506）到基站（110）并分配（ 510）设备根据占空比的时隙。可以基于接收到的多个占空比控制多个设备的时隙分配速率（512）。可以在入站和出站性能的服务质量（QoS）指标中包括占空比和温度（610）。

9. 发明申请

WO2010065281A3 METHOD AND APPARATUS FOR REMOVING DC OFFSET IN A DIRECT CONVERSION RECEIVER 审中-公开
标题翻译：在直接转换接收器中移除直流偏置的方法和装置
公开(公告)号：WO2010065281A3
公开(公告)日：2010-08-26
申请号：PCT/US2009064679
申请日：2009-11-17
申请人： MOTOROLA INC , STOGNER DARRELL J , RAO YADUNANDANA N , RUELKE CHARLES R , LAMPERT CHET A
发明人： STOGNER DARRELL J , RAO YADUNANDANA N , RUELKE CHARLES R , LAMPERT CHET A
IPC分类号： H04B1/30 , H04B17/40 , H03D1/04
CPC分类号： H04B1/30 , H04L25/061
摘要： A method and apparatus for correcting direct current (DC) offset errors of a received signal in a direct conversion receiver (DCR) are provided. DC offset correction algorithms are incorporated into the DCR, each algorithm being optimized for a particular receive signal operating environment. The DC offset correction algorithms remove DC offset errors in baseband In-phase and Quadrature-phase signals received within the direct conversion receiver baseband signal path. Individual DC offset correction algorithms are selected for use as determined by a signal quality estimator component. A DC offset correction component of the direct conversion receiver determines an appropriate DC offset correction algorithm suited for a particular operating environment. A criterion for a signal quality estimate is set to control transitioning between DCOC algorithms. A dual threshold strategy may be adopted to transition between one DC offset correction algorithm and another DC offset correction algorithm to provide hysteresis.
摘要翻译：提供了用于校正直接转换接收机（DCR）中的接收信号的直流（DC）偏移误差的方法和装置。 DC偏移校正算法被并入到DCR中，每个算法针对特定的接收信号操作环境进行优化。 DC偏移校正算法消除了在直接转换接收机基带信号路径内接收到的基带同相和正交相信号中的直流失调误差。选择单个DC偏移校正算法以由信号质量估计器组件确定使用。直接转换接收机的DC偏移校正分量确定适合于特定操作环境的适当DC偏移校正算法。设置信号质量估计的标准来控制DCOC算法之间的转换。可以采用双阈值策略来在一个DC偏移校正算法和另一个DC偏移校正算法之间转换以提供滞后。

10. 发明申请

WO2011014331A3 CARRIER DETECT SYSTEM, APPARATUS AND METHOD THEREOF 审中-公开
标题翻译：载体检测系统，装置及其方法
公开(公告)号：WO2011014331A3
公开(公告)日：2011-04-28
申请号：PCT/US2010040393
申请日：2010-06-29
申请人： MOTOROLA SOLUTIONS INC , RUELKE CHARLES R , RAO YADUNANDANA N , STOGNER DARRELL J , YOUNG RICHARD S
发明人： RUELKE CHARLES R , RAO YADUNANDANA N , STOGNER DARRELL J , YOUNG RICHARD S
IPC分类号： H04B1/16
CPC分类号： H04L25/06 , H03G3/3068 , H04L27/0014 , H04L27/38 , H04L27/3809 , H04L27/3863
摘要： A method of detecting an on-channel signal and synchronizing signal detection with correcting for DC offset errors in a direct conversion receiver is presented. A received signal is digitized, and a state machine operates to detect the presence of an on-channel signal. If the signal is not detected, a mixed mode training sequence is initiated in which the DC offset errors in both an analog and digital received signal path are corrected. While training, processing of the digitized samples by a digital signal processor and a host controller is suspended (while they are put into battery save mode) and the gain provided to subsequently received signals is minimized. The DC offset correction circuitry is bypassed and put into battery save mode at predetermined periods when DC offset correction is not performed.
摘要翻译：提出了一种在直接转换接收机中检测通道信号和同步信号检测与校正DC偏移误差的方法。接收到的信号被数字化，状态机操作以检测是否存在通道信号。如果未检测到信号，则开始混合模式训练序列，其中模拟和数字接收信号路径中的DC偏移误差被校正。在进行训练时，由数字信号处理器和主机控制器处理数字化采样被暂停（当它们进入电池保存模式时），并且提供给随后接收到的信号的增益被最小化。当不执行直流偏移校正时，DC偏移校正电路被旁路并在预定时间段进入省电模式。

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