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1. 发明授权

US08208936B2 Methods and apparatus for improving cell-edge data throughput in a wireless communications system 有权
标题翻译：用于在无线通信系统中改善小区边缘数据吞吐量的方法和装置
公开(公告)号：US08208936B2
公开(公告)日：2012-06-26
申请号：US12204040
申请日：2008-09-04
申请人： Bengt Lindoff , Andres Reial , Anders Rosenqvist
发明人： Bengt Lindoff , Andres Reial , Anders Rosenqvist
IPC分类号： H04W72/00 , H04W4/00 , H04W36/00 , H04B7/212
CPC分类号： H04L1/0026 , H04W72/082
摘要： Methods and apparatus for adaptively transmitting data in a wireless communication network are disclosed, in which channel conditions between a mobile terminal and two or more base stations in an active set are evaluated and used to select a transmission mode from a set of available downlink transmission modes including a non-interference-coordinated point-to-point transmission mode as well as at least one of a multi-cell single-frequency-network transmission mode and an interference-coordinated point-to-point transmission mode. Using the dynamic transmission mode selection described herein, a higher cell-edge throughput in HSDPA systems may be achieved.
摘要翻译：公开了一种用于在无线通信网络中自适应地发送数据的方法和装置，其中评估活动集中的移动终端与两个或多个基站之间的信道条件，并用于从一组可用的下行链路传输模式中选择传输模式包括无干扰协调的点对点传输模式以及多小区单频网传输模式和干扰协调点对点传输模式中的至少一个。使用本文描述的动态传输模式选择，可以实现HSDPA系统中较高的小区边缘吞吐量。

2. 发明授权

US07986930B2 IQ imbalance image suppression in presence of unknown phase shift 有权
标题翻译：存在未知相移的IQ不平衡图像抑制
公开(公告)号：US07986930B2
公开(公告)日：2011-07-26
申请号：US11949481
申请日：2007-12-03
申请人： Bengt Lindoff , Andres Reial
发明人： Bengt Lindoff , Andres Reial
IPC分类号： H04B1/10 , H04K3/00
CPC分类号： H04L27/3863 , H03D3/009 , H04L2027/0024
摘要： A wireless communication system receiver compensates a received signal containing an IQ gain imbalance prior to performing frequency correction. The IQ gain imbalance in the signal is estimated after frequency correction, providing an IQ gain imbalance estimate for subsequent IQ gain imbalance compensation. The IQ gain imbalance estimation includes formulating a plurality of hypotheses of phase error between I and Q signal components, and taking as the actual phase error the hypothesis that yields the maximum power ratio between I and Q signal components. The maximum power ratio is differentiated with respect to the IQ imbalance estimate. The IQ gain imbalance estimate is updated as a function of its prior value(s), the maximum power ratio, and the derivative of the maximum power ratio.
摘要翻译：无线通信系统接收机在执行频率校正之前补偿包含IQ增益不平衡的接收信号。在频率校正之后估计信号中的IQ增益不平衡，为随后的IQ增益不平衡补偿提供IQ增益不平衡估计。 IQ增益不平衡估计包括制定I和Q信号分量之间的相位误差的多个假设，并且将实际的相位误差作为产生I和Q信号分量之间的最大功率比的假设。相对于IQ不平衡估计，最大功率比是不同的。 IQ增益不平衡估计作为其先前值，最大功率比和最大功率比的导数的函数进行更新。

3. 发明申请

US20090316591A1 Method and Apparatus for Generating Channel Quality Estimates 有权
标题翻译：用于生成通道质量估计的方法和装置
公开(公告)号：US20090316591A1
公开(公告)日：2009-12-24
申请号：US12392433
申请日：2009-02-25
申请人： Andres Reial , Bengt Lindoff , Anders Rosenqvist
发明人： Andres Reial , Bengt Lindoff , Anders Rosenqvist
IPC分类号： H04L12/26 , H04W72/00 , H04B17/00
CPC分类号： H04L1/0023 , H04W72/1231 , H04W72/1284
摘要： A base station receives channel quality reports from a plurality of mobile terminals. The channel quality reports from the mobile terminals indicate the signal power of the signals received by the mobile terminals from the base station and one or more interference parameters relating to the power of impairment components contributing to the total impairment of the received signal during a first time interval. The base station computes an estimated channel quality indication for a second time interval subsequent to the first time interval based on expected variations in the powers of the impairment components. The estimated channel quality indication for the second time interval is used by the base station to schedule the mobile terminals and to determine the transmission format.
摘要翻译：基站从多个移动终端接收信道质量报告。来自移动终端的信道质量报告指示移动终端从基站接收的信号的信号功率，以及与第一次接收到的信号的总损害有关的损伤分量的功率有关的一个或多个干扰参数间隔。基站在第一时间间隔之后的第二时间间隔基于损伤分量的功率的预期变化来计算估计的信道质量指示。第二时间间隔的估计信道质量指示由基站用于调度移动终端并确定传输格式。

4. 发明申请

US20090034666A1 IQ Imbalance Image Suppression 有权
标题翻译： IQ不平衡图像抑制
公开(公告)号：US20090034666A1
公开(公告)日：2009-02-05
申请号：US11832695
申请日：2007-08-02
申请人： Bengt Lindoff , Andres Reial
发明人： Bengt Lindoff , Andres Reial
IPC分类号： H04B1/10
CPC分类号： H04B1/707 , H04B1/123 , H04B1/30 , H04B2201/709727 , H04L25/0212 , H04L27/3863 , H04L2027/0016
摘要： A WCDMA receiver performs baseband suppression of the image signal component caused by IQ imbalance. An IQ imbalance image scaling factor is computed from conventional channel estimates and estimates of the IQ imbalance image channel, the latter computed using a conjugated scrambling sequence as the reference sequence for despreading. An IQ imbalance image estimate is obtained by scaling the complex conjugate of the received signal by the IQ imbalance image scaling factor, and is subtracted from the input signal prior to applying traditional baseband demodulation algorithms.
摘要翻译： WCDMA接收机对IQ不平衡引起的图像信号分量进行基带抑制。从常规信道估计和IQ不平衡图像信道的估计计算IQ不平衡图像缩放因子，后者使用共轭加扰序列作为解扩的参考序列计算。通过将接收信号的复共轭缩放IQ平衡图像缩放因子，获得IQ不平衡图像估计，并且在应用传统的基带解调算法之前从输入信号中减去IQ不平衡图像估计。

5. 发明申请

US20080101443A1 Method and Apparatus for Multiple Scrambling Code Impairment Compensation 有权
标题翻译：多重扰码补偿的方法和装置
公开(公告)号：US20080101443A1
公开(公告)日：2008-05-01
申请号：US11552573
申请日：2006-10-25
申请人： Bengt Lindoff , Andres Reial
发明人： Bengt Lindoff , Andres Reial
IPC分类号： H04B1/707
CPC分类号： H04B1/712 , H04B2201/709727 , H04L25/0212 , H04L25/03012
摘要： In one or more embodiments, a receiver circuit generates impairment correlation estimates for a desired signal that are compensated for the use of different transmission scrambling codes in transmitting the desired signal and an associated pilot signal. In one embodiment, an impairment correlation estimation method comprises determining impairment correlation estimates from a pilot signal in a received CDMA signal, adapting the impairment correlation estimates for scrambling code effects if the desired signal and pilot signal are transmitted under different transmission scrambling codes, and performing one or more signal processing operations with respect to the desired signal based on the impairment correlation estimates. For example, in at least one embodiment, the receiver circuit is configured to compensate elements of an impairment correlation matrix that correspond to signal delays of the desired signal based on transmit power allocation differences between pilot and desired signal scrambling codes.
摘要翻译：在一个或多个实施例中，接收机电路产生针对在发送期望信号和相关联的导频信号中不同传输扰码使用的补偿的期望信号的损害相关估计。在一个实施例中，损害相关估计方法包括根据接收的CDMA信号中的导频信号来确定损害相关估计，如果期望的信号和导频信号在不同的传输扰码下被发送，则适配用于扰码效应的损害相关估计，并执行基于所述损害相关估计，关于所述期望信号的一个或多个信号处理操作。例如，在至少一个实施例中，接收机电路被配置为基于导频和期望的信号扰码之间的发射功率分配差异来补偿对应于期望信号的信号延迟的损害相关矩阵的元素。

6. 发明申请

US20120252446A1 Fast Radio Access Technology Detection for Cell Search 有权
标题翻译：用于小区搜索的快速无线接入技术检测
公开(公告)号：US20120252446A1
公开(公告)日：2012-10-04
申请号：US13076599
申请日：2011-03-31
申请人： Andres Reial , Niklas Andgart , Bengt Lindoff , Lennart Moren , Anders Wallén
发明人： Andres Reial , Niklas Andgart , Bengt Lindoff , Lennart Moren , Anders Wallén
IPC分类号： H04W4/00
CPC分类号： H04W48/16 , H04W88/06
摘要： Methods and apparatus are provided for detecting the radio access technology (RAT) employed in a received signal prior to performing a cell search. The RAT detection method may be used to identify the most likely RAT employed for each candidate frequency identified in an initial frequency scan. Once the most likely RAT is identified, the mobile communication device can then attempt synchronization according to the procedures for the most likely RAT. Identifying the RAT prior to the cell search reduces the number of synchronization attempts and, consequently, the time needed to perform the cell search.
摘要翻译：提供了用于在执行小区搜索之前检测在接收信号中采用的无线电接入技术（RAT）的方法和装置。 RAT检测方法可以用于识别在初始频率扫描中识别的每个候选频率所采用的最可能的RAT。一旦识别出最可能的RAT，则移动通信设备然后可以根据最可能的RAT的过程尝试同步。在小区搜索之前识别RAT减少了同步尝试的次数，因此减少了进行小区搜索所需的时间。

7. 发明申请

US20100208847A1 OFDM Receiver for Dispersive Environment 有权
标题翻译：用于分散环境的OFDM接收机
公开(公告)号：US20100208847A1
公开(公告)日：2010-08-19
申请号：US12371971
申请日：2009-02-17
申请人： Andres Reial , Bengt Lindoff
发明人： Andres Reial , Bengt Lindoff
IPC分类号： H04L27/06 , H04L25/08 , H04L27/28 , H04J11/00 , H04B1/10
CPC分类号： H04L27/265 , H04J11/0063 , H04L25/03159 , H04L27/2662
摘要： A received OFDM signal is processed to determine a plurality of reference delays, which may include the path delays of a multipath channel. The effective channel estimates corresponding to each reference delay are determined, as is the covariance of the ISI and noise components observed at each delay. Combining weights resulting in maximum post-combining SINR are determined for all subcarriers. A corresponding plurality of FFTs is applied to the incoming sample stream, one at each of the reference delays. The individual subcarriers from each FFT output are then combined using the combining weights. This produces a single FFT output with suppressed ISI, which is used in further processing.
摘要翻译：处理接收的OFDM信号以确定多个参考延迟，其可以包括多径信道的路径延迟。确定对应于每个参考延迟的有效信道估计，以及在每个延迟时观察到的ISI和噪声分量的协方差。为所有子载波确定导致最大后组合SINR的权重。将相应的多个FFT应用于输入的采样流，每个参考延迟中的一个。然后使用组合权重组合来自每个FFT输出的各个子载波。这产生具有抑制ISI的单个FFT输出，用于进一步处理。

8. 发明申请

US20120263061A1 Method and Apparatus for Generating Channel Quality Estimates 审中-公开
标题翻译：用于生成通道质量估计的方法和装置
公开(公告)号：US20120263061A1
公开(公告)日：2012-10-18
申请号：US13490754
申请日：2012-06-07
申请人： Andres Reial , Bengt Lindoff , Anders Rosenqvist
发明人： Andres Reial , Bengt Lindoff , Anders Rosenqvist
IPC分类号： H04L12/26
CPC分类号： H04L1/0023 , H04W72/1231 , H04W72/1284
摘要： A base station receives channel quality reports from a plurality of mobile terminals. The channel quality reports from the mobile terminals indicate the signal power of the signals received by the mobile terminals from the base station and one or more interference parameters relating to the power of impairment components contributing to the total impairment of the received signal during a first time interval. The base station computes an estimated channel quality indication for a second time interval subsequent to the first time interval based on expected variations in the powers of the impairment components. The estimated channel quality indication for the second time interval is used by the base station to schedule the mobile terminals and to determine the transmission format.
摘要翻译：基站从多个移动终端接收信道质量报告。来自移动终端的信道质量报告指示移动终端从基站接收的信号的信号功率，以及与第一次接收到的信号的总损害有关的损伤分量的功率有关的一个或多个干扰参数间隔。基站在第一时间间隔之后的第二时间间隔基于损伤分量的功率的预期变化来计算估计的信道质量指示。第二时间间隔的估计信道质量指示由基站用于调度移动终端并确定传输格式。

9. 发明授权

US07929591B2 Method and apparatus for multiple scrambling code impairment compensation 有权
标题翻译：多重扰码补偿的方法和装置
公开(公告)号：US07929591B2
公开(公告)日：2011-04-19
申请号：US11552573
申请日：2006-10-25
申请人： Bengt Lindoff , Andres Reial
发明人： Bengt Lindoff , Andres Reial
IPC分类号： H04B1/707
CPC分类号： H04B1/712 , H04B2201/709727 , H04L25/0212 , H04L25/03012
摘要： In one or more embodiments, a receiver circuit generates impairment correlation estimates for a desired signal that are compensated for the use of different transmission scrambling codes in transmitting the desired signal and an associated pilot signal. In one embodiment, an impairment correlation estimation method comprises determining impairment correlation estimates from a pilot signal in a received CDMA signal, adapting the impairment correlation estimates for scrambling code effects if the desired signal and pilot signal are transmitted under different transmission scrambling codes, and performing one or more signal processing operations with respect to the desired signal based on the impairment correlation estimates. For example, in at least one embodiment, the receiver circuit is configured to compensate elements of an impairment correlation matrix that correspond to signal delays of the desired signal based on transmit power allocation differences between pilot and desired signal scrambling codes.
摘要翻译：在一个或多个实施例中，接收机电路产生针对在发送期望信号和相关联的导频信号中不同传输扰码使用的补偿的期望信号的损害相关估计。在一个实施例中，损害相关估计方法包括根据接收的CDMA信号中的导频信号来确定损害相关估计，如果期望的信号和导频信号在不同的传输扰码下被发送，则适配用于扰码效应的损害相关估计，并执行基于所述损害相关估计，关于所述期望信号的一个或多个信号处理操作。例如，在至少一个实施例中，接收机电路被配置为基于导频和期望的信号扰码之间的发射功率分配差异来补偿对应于期望信号的信号延迟的损害相关矩阵的元素。

10. 发明授权

US09055603B2 Scheduling of up-link transmissions of a wireless communication system 有权
标题翻译：调度无线通信系统的上行链路传输
公开(公告)号：US09055603B2
公开(公告)日：2015-06-09
申请号：US13503898
申请日：2010-10-22
申请人： Anders Rosenqvist , Bengt Lindoff , Andres Reial
发明人： Anders Rosenqvist , Bengt Lindoff , Andres Reial
IPC分类号： H04L12/28 , H04W4/06 , H04W40/00 , H04W72/12 , H04B7/02 , H04B7/04
CPC分类号： H04W72/1268 , H04B7/024 , H04B7/0452
摘要： A method is disclosed of scheduling up-link transmissions for a number of terminals of a wireless communication system into a number of groups, wherein each group comprises terminals intended for simultaneous up-link transmission during a respective period of time. A subset metric may be calculated for each of a number of subsets of terminals based on transmissions received from the terminals of the subset. The subset metric is indicative of a simultaneous transmission suitability measure for the terminals of the subset. The subsets may be processed in subset metric order, starting with the subset having a subset metric indicating a least suitability of simultaneous transmission. During the processing, each terminal of the subset that is not already scheduled in a group may be scheduled in a group that does not already comprise another terminal of the subset. Information indicative of the period of time during which a scheduled terminal is intended to transmit may be transmitted to each of the scheduled terminals. Corresponding computer program product, scheduler and arrangement are also disclosed.
摘要翻译：公开了一种将无线通信系统的多个终端的上行链路传输调度为多个组的方法，其中每个组包括旨在在相应时间段期间同步上行链路传输的终端。可以基于从子集的终端接收到的传输来为终端的多个子集中的每一个计算子集度量。子集度量表示对于子集的终端的同时传输适应性度量。可以以子集度量顺序处理子集，从具有指示同时传输的最小适用性的子集度量的子集开始。在处理期间，尚未在组中调度的子集的每个终端可以在尚未包括该子集的另一个终端的组中进行调度。可以向每个调度的终端发送指示预定的终端要发送的时间段的信息。还公开了相应的计算机程序产品，调度器和布置。

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