公开(公告)号：US08103219B2

公开(公告)日：2012-01-24

申请号：US12337964

申请日：2008-12-18

申请人： Andres Reial ,  Bo Bernhardsson ,  Xiaohui Wang

发明人： Andres Reial ,  Bo Bernhardsson ,  Xiaohui Wang

IPC分类号： H04B17/00

CPC分类号： H03J7/02

摘要： The automatic frequency correction value applied by a receiver is altered to minimize long-term drift of a path delay profile. In one embodiment, the phase or timing error resulting from constant frequency corrections is accumulated, and an estimated frequency correction value is selectively quantized into an actual frequency correction value in response to the accumulated phase/timing error. The quantized value above or below the estimate is selected to minimize the accumulated phase/timing error that gives rise to path delay profile drift. In another embodiment, a timing circuit measures the instantaneous path delay profile drift incurred with each frequency correction, and integrates the instantaneous drift measurements over time to yield a path delay profile drift. The drift (or its rate of change) is then used to adjust a frequency correction value so as to minimize the drift.

摘要翻译： 由接收机施加的自动频率校正值被改变以最小化路径延迟分布的长期漂移。 在一个实施例中，累积了由恒定频率校正引起的相位或定时误差，并且响应于累积的相位/定时误差，将估计频率校正值选择性地量化为实际频率校正值。 选择高于或低于估计的量化值以最小化引起路径延迟分布漂移的累积相位/定时误差。 在另一个实施例中，定时电路测量每个频率校正引起的瞬时路径延迟分布漂移，并且随着时间的推移积分瞬时漂移测量值，以产生路径延迟分布漂移。 然后使用漂移（或其变化率）来调整频率校正值，以便使漂移最小化。

公开(公告)号：US20100159862A1

公开(公告)日：2010-06-24

申请号：US12337964

申请日：2008-12-18

申请人： Andres Reial ,  Bo Bernhardsson ,  Xiaohui Wang

发明人： Andres Reial ,  Bo Bernhardsson ,  Xiaohui Wang

IPC分类号： H04B1/06 ,  H04B1/16

CPC分类号： H03J7/02

摘要： The automatic frequency correction value applied by a receiver is altered to minimize long-term drift of a path delay profile. In one embodiment, the phase or timing error resulting from constant frequency corrections is accumulated, and an estimated frequency correction value is selectively quantized into an actual frequency correction value in response to the accumulated phase/timing error. The quantized value above or below the estimate is selected to minimize the accumulated phase/timing error that gives rise to path delay profile drift. In another embodiment, a timing circuit measures the instantaneous path delay profile drift incurred with each frequency correction, and integrates the instantaneous drift measurements over time to yield a path delay profile drift. The drift (or its rate of change) is then used to adjust a frequency correction value so as to minimize the drift.

摘要翻译： 由接收机施加的自动频率校正值被改变以最小化路径延迟分布的长期漂移。 在一个实施例中，累积了由恒定频率校正引起的相位或定时误差，并且响应于累积的相位/定时误差，将估计频率校正值选择性地量化为实际频率校正值。 选择高于或低于估计的量化值以最小化引起路径延迟分布漂移的累积相位/定时误差。 在另一个实施例中，定时电路测量每个频率校正引起的瞬时路径延迟分布漂移，并且随着时间的推移积分瞬时漂移测量值，以产生路径延迟分布漂移。 然后使用漂移（或其变化率）来调整频率校正值，以便使漂移最小化。

公开(公告)号：US08798213B2

公开(公告)日：2014-08-05

申请号：US12682857

申请日：2008-08-27

申请人： Bengt Lindoff ,  Bo Bernhardsson ,  Johan Nilsson

发明人： Bengt Lindoff ,  Bo Bernhardsson ,  Johan Nilsson

IPC分类号： H04B1/10 ,  H04L27/26

CPC分类号： H04B1/1081 ,  H04J11/0073 ,  H04L25/0224 ,  H04L25/06 ,  H04L27/2655 ,  H04L27/2656

摘要： Methods and devices for detecting a symbol in a radio channel and for cell identification are disclosed. A signal is received from the radio channel and the signal is filtered by a filter being responsive to the symbol thereby establishing a first signal. A second signal dependent on the noise floor of the received signal is established—whereby a time interval expected to include multi-path components being excluded or suppressed. A third signal being the ratio between the first signal and the noise floor is established, and the presence of the symbol is detected by detecting a peak in the third signal.

摘要翻译： 公开了用于检测无线电信道中的符号和用于小区识别的方法和装置。 从无线电信道接收信号，并且信号被响应于符号的滤波器滤波，从而建立第一信号。 建立取决于接收信号的本底噪声的第二信号，由此排除或抑制预期包括多路径分量的时间间隔。 确定第一信号和噪声本底之间的比值的第三信号，并且通过检测第三信号中的峰值来检测符号的存在。

公开(公告)号：US08086229B2

公开(公告)日：2011-12-27

申请号：US12239346

申请日：2008-09-26

申请人： Bengt Lindoff ,  Bo Bernhardsson ,  Johan Nilsson ,  Torgny Palenius ,  Andreas Wilde ,  Werner Anzill

发明人： Bengt Lindoff ,  Bo Bernhardsson ,  Johan Nilsson ,  Torgny Palenius ,  Andreas Wilde ,  Werner Anzill

IPC分类号： H04W24/00

CPC分类号： H04L1/0026 ,  H04B1/036 ,  H04B1/40 ,  H04L1/0028 ,  H04L1/0031 ,  H04L1/0036 ,  H04L1/1607 ,  H04W72/1252 ,  H04W72/1284

摘要： A user equipment (UE) in a mobile communications system is operated in a manner that alleviates or avoids an overload condition in the UE. This involves operating a receiver of the UE to receive one or more data blocks via a channel. In response to a user equipment overload condition being detected, a channel quality indicator (CQI) value is reported to a serving base station, wherein the reported CQI value represents a channel quality that is lower than an actual quality of the channel. The UE is then operated in a manner that is consistent with the reported CQI value. UE overload conditions include overheating, and an inability to process received data blocks at the rate at which they are being received.

摘要翻译： 移动通信系统中的用户设备（UE）以减轻或避免UE中的过载状况的方式操作。 这涉及操作UE的接收器以经由信道接收一个或多个数据块。 响应于检测到用户设备过载状况，向服务基站报告信道质量指示符（CQI）值，其中报告的CQI值表示低于信道的实际质量的信道质量。 然后以与报告的CQI值一致的方式操作UE。 UE过载条件包括过热，并且无法以接收到的数据块的速率处理接收到的数据块。

公开(公告)号：US08036694B2

公开(公告)日：2011-10-11

申请号：US11721795

申请日：2005-12-19

申请人： Lennart Andersson ,  Johan Nilsson ,  Bengt Lindoff ,  Bo Bernhardsson

发明人： Lennart Andersson ,  Johan Nilsson ,  Bengt Lindoff ,  Bo Bernhardsson

IPC分类号： H04B7/00

CPC分类号： H04W52/125 ,  H04W52/08 ,  H04W52/225 ,  H04W52/24 ,  H04W52/246

摘要： A method for generating a power control command in a transceiver in a wireless communication system, where the method comprises the steps of calculating, at the beginning of a predefined time period, a quality measure reference value, generating, repeatedly during the predefined time period, an estimated quality measure value of a signal received at the transceiver; generating a power control command in dependence of the estimated quality measure value and the quality measure reference value; and generating, a number of times during the predefined time period, a modified quality measure reference value from the quality measure reference value. The step of generating the power control command comprises comparing the estimated quality measure value with the modified quality measure reference value. A power control unit, comprising a quality measure estimator, a calculator, a first controller, a second controller and an inner loop element, is configured to implement the method.

摘要翻译： 一种用于在无线通信系统中的收发器中产生功率控制命令的方法，其中所述方法包括以下步骤：在预定时间段开始时，计算质量测量参考值，在预定时间段期间重复生成， 在收发机处接收的信号的估计质量测量值; 根据估计的质量测量值和质量测量参考值产生功率控制命令; 以及在所述预定义时间段内从所述质量测量参考值生成经修改的质量测量参考值的次数。 产生功率控制命令的步骤包括将估计质量测量值与修改的质量测量参考值进行比较。 包括质量测量估计器，计算器，第一控制器，第二控制器和内环元件的功率控制单元被配置为实现该方法。

公开(公告)号：US07991378B2

公开(公告)日：2011-08-02

申请号：US12198366

申请日：2008-08-26

申请人： Bengt Lindoff ,  Bo Bernhardsson ,  Fredrik Nordström

发明人： Bengt Lindoff ,  Bo Bernhardsson ,  Fredrik Nordström

IPC分类号： H04B1/16

CPC分类号： H04L27/0014

摘要： Methods and apparatus for automatic frequency control in wireless receivers configured to simultaneously receive multiple carrier signals at distinct radio frequencies are disclosed. An exemplary wireless device comprises at least first and second radio front-end circuits configured to receive first and second wireless communication signals transmitted via first and second radio-frequency carriers at distinct first and second radio frequencies, respectively, a control processor configured to designate a master carrier signal and a slave carrier signal from among the received wireless communication signals, and a frequency error estimation circuit configured to estimate a first receiver frequency error using the received master carrier signal. The control processor is further configured to calculate a second receiver frequency error from the first receiver frequency error, for use in compensating one or more receiver processes performed on the slave carrier signal.

摘要翻译： 公开了用于在不同射频同时接收多个载波信号的无线接收机中的自动频率控制的方法和装置。 示例性无线设备包括至少第一和第二无线电前端电路，其被配置为分别接收在不同的第一和第二无线电频率处经由第一和第二无线电频率载波发送的第一和第二无线通信信号，控制处理器被配置为指定 来自所接收的无线通信信号中的主载波信号和从载波信号;以及频率误差估计电路，被配置为使用所接收的主载波信号来估计第一接收机频率误差。 控制处理器还被配置为从第一接收机频率误差计算第二接收机频率误差，用于补偿对从属载波信号执行的一个或多个接收机处理。

公开(公告)号：US20110096680A1

公开(公告)日：2011-04-28

申请号：US12723255

申请日：2010-03-12

申请人： Bengt Lindoff ,  Bo Bernhardsson ,  Muhammad Ali Kazmi

发明人： Bengt Lindoff ,  Bo Bernhardsson ,  Muhammad Ali Kazmi

IPC分类号： H04W24/00 ,  H04L27/28

CPC分类号： H04L25/022 ,  H04B17/26 ,  H04B17/309 ,  H04B17/364 ,  H04B17/373 ,  H04L25/0222 ,  H04L25/0232

摘要： In one aspect, a method and apparatus derive channel quality estimates for given subcarriers in an OFDM signal, based on reference signal (RS) or other known-signal measurements made for another set of subcarriers. In at least one embodiment, a wireless communication apparatus implements a method whereby it is configured for receiving reference information on the first set of subcarriers; generating the first channel quality estimates in the frequency domain, based on the received reference information; computing a power delay profile for the first set of subcarriers; and determining the second channel quality estimates either by extrapolating from the first channel quality estimates or as an average of the first channel quality estimates, depending on a delay spread of the power delay profile.

摘要翻译： 一方面，一种方法和装置基于参考信号（RS）或对另一组子载波进行的其他已知信号测量，在OFDM信号中导出给定子载波的信道质量估计。 在至少一个实施例中，无线通信装置实现一种方法，由此被配置为在第一组子载波上接收参考信息; 基于所接收的参考信息，生成频域中的第一信道质量估计; 计算第一组子载波的功率延迟分布; 以及通过根据所述功率延迟分布的延迟扩展，从所述第一信道质量估计外推或者作为所述第一信道质量估计的平均来确定所述第二信道质量估计。

公开(公告)号：US07680176B2

公开(公告)日：2010-03-16

申请号：US11412543

申请日：2006-04-27

申请人： Bengt Lindoff ,  Bo Bernhardsson ,  Jonas Ohlsson

发明人： Bengt Lindoff ,  Bo Bernhardsson ,  Jonas Ohlsson

IPC分类号： H04B1/69

CPC分类号： H04B1/712 ,  H04B2201/7071 ,  H04B2201/709727

摘要： According to a method and apparatus taught herein, a Rake receiver circuit selectively operates with or without colored interference compensation, in dependence on current operating conditions. For example, in one embodiment the Rake receiver circuit comprises one or more processing circuits that are configured to generate Rake combining weights in a first mode of operation as first combining weights calculated from channel estimates corresponding to a set of Rake signal fingers. In a second mode, the processing circuit(s) generate the Rake combining weights as compensated combining weights obtained by compensating the first combining weights with second combining weights calculated from colored interference estimates corresponding to a set of Rake probing fingers.

摘要翻译： 根据本文教导的方法和装置，Rake接收器电路根据当前的操作条件选择性地在有或没有有色干涉补偿的情况下操作。 例如，在一个实施例中，Rake接收机电路包括一个或多个处理电路，其被配置为以第一操作模式生成Rake组合权重作为从对应于一组Rake信号指的信道估计计算的第一组合权重。 在第二模式中，处理电路产生Rake组合权重作为通过用对应于一组耙探测手指的有色干涉估计计算的第二组合权重来补偿第一组合权重而获得的补偿组合权重。

公开(公告)号：US07283791B2

公开(公告)日：2007-10-16

申请号：US10528736

申请日：2003-09-03

申请人： Johan Nilsson ,  Bo Bernhardsson

发明人： Johan Nilsson ,  Bo Bernhardsson

IPC分类号： H04B1/00

CPC分类号： H04W52/12 ,  H04W52/20 ,  H04W52/24 ,  H04W52/243

摘要： A telecommunications system for improving quality of service (QoS) to users via the implementation of an extended outer loop power control algorithm. A radio resource manager (RRM) operates to determine the number of channels allotted to users within a network at a certain time. The RRM implements the extended outer loop power control algorithm for each allotted channel, thus determining SIR reference values for each allotted channel the RRM ensures that the SIR reference value for any channel does not fall bellow a predetermined minimum value. The SIR reference value to be used for all channels in use is determined as the highest of all the calculated SIR reference values. The extended outer loop power control algorithm can be implemented at a mobile station level, base station level or radio network controller level.

摘要翻译： 一种用于通过实施扩展外环功率控制算法来改善用户服务质量（QoS）的电信系统。 无线电资源管理器（RRM）用于确定在特定时间内分配给网络中的用户的信道数量。 RRM为每个分配的信道实现扩展的外环功率控制算法，从而确定每个分配的信道的SIR参考值。 RRM确保任何通道的SIR参考值不会低于预定的最小值。 要用于所有使用的通道的SIR参考值被确定为所有计算的SIR参考值中的最高值。 扩展外环功率控制算法可以在移动台级，基站级或无线网络控制器级实现。

公开(公告)号：US07177602B2

公开(公告)日：2007-02-13

申请号：US10457913

申请日：2003-06-10

申请人： Mikael Ziren ,  Jonas Ohlsson ,  Tatjana Hrnjez ,  Elias Jonsson ,  Bo Bernhardsson

发明人： Mikael Ziren ,  Jonas Ohlsson ,  Tatjana Hrnjez ,  Elias Jonsson ,  Bo Bernhardsson

IPC分类号： H04B1/40 ,  H04B1/04 ,  H04B1/18 ,  H04B7/00

CPC分类号： H03J7/04 ,  H03J2200/02

摘要： An automatic frequency control (AFC) system in an electronic device is operated by using an AFC-algorithm component to determine a frequency error corresponding to a difference between a frequency of a signal output from a signal generator and a received signal frequency. The frequency error determined by the AFC-algorithm component is multiplied by a scaling factor, which is set to zero after an adjustment has been made to change a frequency of the signal output from the signal generator. The scaling factor is increased from zero to one over time. The scaled frequency error is used to determine whether to adjust the frequency of the signal output from the signal generator.

摘要翻译： 通过使用AFC算法组件来操作电子设备中的自动频率控制（AFC）系统，以确定与从信号发生器输出的信号的频率和接收到的信号频率之间的差异相对应的频率误差。 由AFC算法分量确定的频率误差乘以一个缩放因子，该比例因子在进行调整以改变从信号发生器输出的信号的频率之后被设置为零。 缩放因子随着时间的推移从零增加到一个。 缩放的频率误差用于确定是否调整从信号发生器输出的信号的频率。