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公开(公告)号：US08014345B2
公开(公告)日：2011-09-06
申请号：US11931748
申请日：2007-10-31
IPC分类号： H04Q7/00
CPC分类号： H04W16/14
摘要： A monitoring device (141) can include a transceiver (202) to receive a radio signal, and a controller (203) communicatively coupled to the transceiver to detect an infringement on the radio signal and report the infringement to a database. One or more policies within the database can be updated to mitigate the infringement. The monitoring device can also detect whether a cognitive radio (111) is generating interference on a primary spectrum used by an incumbent device (151). Other embodiments are disclosed.
摘要翻译： 监视设备（141）可以包括用于接收无线电信号的收发机（202）和通信地耦合到收发器的控制器（203），以检测对无线电信号的侵权并将侵权报告给数据库。 可以更新数据库中的一个或多个策略以减轻侵权。 监测装置还可以检测认知无线电（111）是否在现有设备（151）使用的主要频谱上产生干扰。 公开了其他实施例。
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32.发明申请公开(公告)号：US20100144357A1
公开(公告)日：2010-06-10
申请号：US12330037
申请日：2008-12-08
CPC分类号： H04W72/0406 , H04W28/06 , H04W52/0238 , H04W76/14 , H04W92/18 , Y02D70/1224 , Y02D70/1262 , Y02D70/142 , Y02D70/146 , Y02D70/164
摘要： Allocation of channels in a dedicated frequency spectrum on a secondary basis. A direct mode communication request (150) from a first wireless communication device (112) can be received and processed to determine whether there are one or more secondary communication channels over which direct mode communication may be implemented between the first wireless communication devices and other wireless communication devices (114, 116, 118) without violating at least one communication policy for the secondary communication channel. Use of a secondary communication channel can be assigned or denied. In addition, a direct mode communication request can be communicated from a wireless communication device to a base transceiver station (104) identifying one or more other communication devices for which direct mode communication is requested.
摘要翻译： 在专用频谱中进行次级分配信道。 可以接收并处理来自第一无线通信设备（112）的直接模式通信请求（150）并确定是否存在可以在第一无线通信设备和其他无线通信设备之间实现直接模式通信的一个或多个次要通信信道 通信设备（114,116,118），而不违反用于次要通信信道的至少一个通信策略。 可以分配或拒绝使用辅助通信通道。 此外，直接模式通信请求可以从无线通信设备传送到识别要求直接模式通信的一个或多个其他通信设备的基站收发器（104）。
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33.发明申请METHOD AND APPARATUS FOR DISTRIBUTED SENSING MANAGEMENT AND CONTROL WITHIN A COGNITIVE RADIO NETWORK 有权用于认知无线电网络中分布式感应管理与控制的方法与装置公开(公告)号：US20100069013A1
公开(公告)日：2010-03-18
申请号：US12212101
申请日：2008-09-17
申请人： Apoorv Chaudhri , Oleg Andric , Yadunandana N. Rao
发明人： Apoorv Chaudhri , Oleg Andric , Yadunandana N. Rao
IPC分类号： H04B17/00
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，根据权重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。
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34.发明申请公开(公告)号：US20080240024A1
公开(公告)日：2008-10-02
申请号：US11694808
申请日：2007-03-30
申请人： Yadunandana N. Rao , Apoorv Chaudhri , Robert J. Corke , Trefor J. Delve , Daniel G. Prysby , Christopher G. Ware , Michael F. Zeleznik
发明人： Yadunandana N. Rao , Apoorv Chaudhri , Robert J. Corke , Trefor J. Delve , Daniel G. Prysby , Christopher G. Ware , Michael F. Zeleznik
IPC分类号： H04Q7/00
CPC分类号： H04W16/14 , H04Q2213/13098 , H04W48/16
摘要： A method (20,200) and apparatus (10) for detecting and identifying spectrum opportunities, including the steps of communicating a location of at least one node (12) to at least one base station (14) (24), transmitting a list of at least one channel from the at least one base station (14) to the at least one node (12) (26), and sensing the at least one channel from the list by the at least one node (12) (34). The method (20,200) also includes the steps of determining if the at least one channel is in use, and if the at least one channel is in use, determining the user of the at least one channel that is in use (38).
摘要翻译： 一种用于检测和识别频谱机会的方法（20,200）和装置（10），包括将至少一个节点（12）的位置传送到至少一个基站（14）（24）的步骤， 从所述至少一个基站（14）到所述至少一个节点（12）（26）的至少一个信道，以及由所述至少一个节点（12）（34）从所述列表感测所述至少一个信道。 所述方法（20,200）还包括确定所述至少一个信道是否在使用中的步骤，以及如果所述至少一个信道正在使用中，则确定所述至少一个正在使用的信道的用户（38）。
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公开(公告)号：US20080025341A1
公开(公告)日：2008-01-31
申请号：US11461326
申请日：2006-07-31
IPC分类号： H04J3/22
CPC分类号： H04W72/048 , H04W52/0216 , H04W52/0219 , H04W52/0258 , H04W72/042 , 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）设备（102）的温度，基于温度调整（504）设备的占空比，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）度量中包括占空比和温度（610）。
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公开(公告)号：US08259858B2
公开(公告)日：2012-09-04
申请号：US12512185
申请日：2009-07-30
IPC分类号： H04L25/06
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直流偏移误差的方法。 接收到的信号被数字化，并且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，其中校正模拟和数字接收信号路径中的DC偏移误差。 在训练时，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。 直流偏移校正电路被旁路，并且在不执行直流偏移校正的预定周期中进入省电模式。
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37.发明申请公开(公告)号：US20130148761A1
公开(公告)日：2013-06-13
申请号：US13314603
申请日：2011-12-08
IPC分类号： H04L25/06
CPC分类号： H04B1/30
摘要： A communication system comprises a direct conversion receiver for correcting imbalance errors. The direct conversion receiver receives a radio frequency (RF) signal and converts the RF signal to baseband signals. The direct conversion receiver further translates the baseband signals to digital signals having a direct current (DC) offset and applies a DC offset correction to the digital signals having the DC offset to generate first DC offset corrected signals. An imbalance correction unit of the direct conversion receiver applies an imbalance correction to the first DC offset corrected signals by estimating an error between an average envelope of the first DC offset corrected signals and an average envelope of second DC offset corrected signals. The imbalance correction unit is fixed at initial imbalance parameter values. The direct conversion receiver further updates the initial imbalance parameter values of the imbalance correction unit based on the estimated error for correcting imbalance errors.
摘要翻译： 通信系统包括用于校正不平衡误差的直接转换接收器。 直接转换接收器接收射频（RF）信号并将RF信号转换为基带信号。 直接转换接收器进一步将基带信号转换为具有直流（DC）偏移的数字信号，并将DC偏移校正应用于具有DC偏移的数字信号以产生第一DC偏移校正信号。 直接变换接收器的不平衡校正单元通过估计第一DC偏移校正信号的平均包络和第二DC偏移校正信号的平均包络之间的误差来对第一DC偏移校正信号施加不平衡校正。 不平衡校正单元固定在初始不平衡参数值。 直接变换接收机进一步基于用于校正不平衡误差的估计误差来更新不平衡校正单元的初始不平衡参数值。
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38.发明授权Apparatus for receiving multiple independent RF signals simultaneously and method thereof 有权用于同时接收多个独立RF信号的装置及其方法公开(公告)号：US08320858B2
公开(公告)日：2012-11-27
申请号：US12951235
申请日：2010-11-22
IPC分类号： H04B1/04
CPC分类号： H04B1/0021 , H04B1/001
摘要： An apparatus and method for receiving and processing multiple independent, uncorrelated RF signals is presented. The apparatus includes a Hybrid-Direct Conversion Receiver incorporating front end branches, protocol-specific digital processing branches, an interference detector, a correlator, and an offset control for controlling oscillator sources. The front end branches each contain a preselector that filters received signals and a mixer that down converts the received signal to an IF offset from a reference frequency by a unique offset. The bandwidth of an IF processor is partitioned into sub-channels corresponding to the different offsets and is wider than the combination of the sub-channels. The interference detector and correlator determine whether a particular desired signal is degraded by interference signals and select a new sub-channel. This information is provided to the offset control, which adjusts a LO source coupled to the corresponding down mixer accordingly.
摘要翻译： 提出了一种用于接收和处理多个独立的，不相关的RF信号的装置和方法。 该装置包括混合直接转换接收器，其包含前端分支，协议专用数字处理分支，干扰检测器，相关器和用于控制振荡器源的偏移控制。 前端支路每个都包含用于滤波接收信号的预选器和一个将接收信号从参考频率转换为独特偏移的IF偏移的混频器。 IF处理器的带宽被划分为与不同偏移量相对应的子信道，并且比子信道的组合更宽。 干扰检测器和相关器确定特定期望信号是否被干扰信号降级并选择新的子信道。 该信息被提供给偏移控制器，该偏移控制器相应地调节耦合到相应的下混频器的LO源。
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公开(公告)号：US20110312294A1
公开(公告)日：2011-12-22
申请号：US12817007
申请日：2010-06-16
IPC分类号： H04B1/10
CPC分类号： H04B1/1661 , H03G3/348
摘要： A channel scanning technique and apparatus provides audio hole suppression in two-way radio communications. Upon detecting the absence of a carrier signal on a priority channel during a priority scan mode of operation, a training waveform is constructed upon returning to the home-channel. The training waveform is applied to audio shaping filters within an audio lineup to suppress transients and minimize or eliminate the occurrence of audio pops at a speaker output thereby reducing the audio hole.
摘要翻译： 信道扫描技术和装置在双向无线电通信中提供音频孔抑制。 在优先扫描操作模式期间检测到在优先信道上不存在载波信号时，在返回归属信道时构建训练波形。 训练波形被应用于音频阵容中的音频整形滤波器以抑制瞬变，并且最小化或消除扬声器输出处的音频弹出的发生，从而减少音频孔。
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40.发明授权Method and apparatus for removing DC offset in a direct conversion receiver 有权用于去除直接转换接收机中的DC偏移的方法和装置公开(公告)号：US08027651B2
公开(公告)日：2011-09-27
申请号：US12329034
申请日：2008-12-05
IPC分类号： H04B17/02
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： 提供一种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。
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