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21. 发明授权

US09071473B2 Method and system for wireless communication channel estimation 有权
标题翻译：无线通信信道估计方法与系统
公开(公告)号：US09071473B2
公开(公告)日：2015-06-30
申请号：US13229164
申请日：2011-09-09
申请人： Eliana Yepez , Jinliang Huang , Edward Mah , Fredrik Huss
发明人： Eliana Yepez , Jinliang Huang , Edward Mah , Fredrik Huss
IPC分类号： H04B17/00 , H04L25/02 , H04L27/26
CPC分类号： H04L25/0222 , H04L25/0224 , H04L27/2602
摘要： A method and system for selecting an algorithm for channel estimation in a wireless communication system are disclosed. According a parameter indicative of an accuracy of a channel estimation algorithm is determined. A selection between a first channel estimation algorithm and a second channel estimation algorithm is made based on the determined parameter.
摘要翻译：公开了一种在无线通信系统中选择用于信道估计的算法的方法和系统。根据指示信道估计算法的精度的参数被确定。基于确定的参数进行第一信道估计算法和第二信道估计算法之间的选择。

22. 发明申请

US20150111515A1 Method, Base Station and Apparatus in a Base Station for Reducing Intermodulation Distortion 有权
标题翻译：用于减少互调失真的基站中的方法，基站和装置
公开(公告)号：US20150111515A1
公开(公告)日：2015-04-23
申请号：US14399222
申请日：2012-05-24
申请人： Youping Su , Alireza Nejatian , Fredrik Huss
发明人： Youping Su , Alireza Nejatian , Fredrik Huss
IPC分类号： H04B1/10
CPC分类号： H04B1/1027 , H04B1/525
摘要： A method in a base station is provided for reducing distortion of an uplink signal received in a receiver part (20) of the base station, said distortion being caused by intermodulation, IM, products. The method comprises: generating (106), from a transmitter source signal, a modeled signal of IM components, as nth order IM components of the transmitter source signal, n being an integer value of 2, 3, 4 and/or 5 etc., and detecting (110) IM products of the received uplink signal, the received uplink signal comprising UL traffic components and the IM products, by correlating the received uplink signal with the IM components of the modeled signal. The method further comprises producing (112) a cancellation signal based on the detected IM products of the received uplink signal, and subtracting (114) the cancellation signal from the received uplink signal. Also, a similar apparatus in a base station is provided.
摘要翻译：提供了一种基站中的方法，用于减少在基站的接收机部分（20）中接收的上行链路信号的失真，所述失真是由互调，IM，乘积引起的。该方法包括：从发射机源信号产生（106）IM分量的建模信号，作为发射机源信号的n阶IM分量，n是2,3,4和/或5等的整数值。并且通过将接收到的上行链路信号与建模信号的IM分量相关联来检测（110）所接收的上行链路信号的IM产品，所接收的上行链路信号包括UL业务分量和IM产品。该方法还包括基于检测到的接收到的上行链路信号的IM产物产生（112）消除信号，以及从接收到的上行链路信号中减去（114）消除信号。此外，提供了基站中的类似装置。

23. 发明授权

US08699448B2 Method and arrangement for improved interference rejection combining 有权
标题翻译：改进的抗干扰组合方法和布置
公开(公告)号：US08699448B2
公开(公告)日：2014-04-15
申请号：US13513575
申请日：2009-12-09
申请人： Fredrik Lindqvist , Fredrik Huss
发明人： Fredrik Lindqvist , Fredrik Huss
IPC分类号： H04W4/00
CPC分类号： H04J11/0046
摘要： In a method of interference rejection combining (IRC) for mitigating interference in received signals in the frequency domain for a telecommunication system, selecting (S 10) a sub-group of frequencies of a received signal, determining (S20) a joint representation of a covariance matrix for the interference plus noise for at least one time slot of the received signal for the selected sub-group of frequencies, determining (S30) a channel estimate based on at least one pilot symbol of said at least one time slot. Finally, determining (S40) IRC coefficients in the frequency domain for each symbol of said at least one time slot based on said determined joint representation of the covariance matrix and said determined channel estimate.
摘要翻译：在用于减轻电信系统的频域中的接收信号干扰的干扰抑制组合（IRC）的方法中，选择（S10）接收信号的一个子组的频率，确定（S20）用于针对所选择的频率组的接收信号的至少一个时隙的干扰加噪声的协方差矩阵，基于所述至少一个时隙的至少一个导频符号来确定（S30）信道估计。最后，基于所述确定的协方差矩阵的联合表示和所确定的信道估计，确定（S40）所述至少一个时隙的每个符号的频域中的IRC系数。

24. 发明申请

US20130003880A1 Estimation of Frequency Offset Between a Base Station and Mobile Terminal 有权
公开(公告)号：US20130003880A1
公开(公告)日：2013-01-03
申请号：US13170930
申请日：2011-06-28
申请人： Guoqiang Lu , Oskar Mauritz , Fredrik Huss , Henrik Back
发明人： Guoqiang Lu , Oskar Mauritz , Fredrik Huss , Henrik Back
IPC分类号： H04L27/00
CPC分类号： H04W56/0035 , H04J11/0079 , H04J2011/0096 , H04L27/2657 , H04L27/2686 , H04W24/08 , H04W56/001
摘要： A method and apparatus for frequency offset estimation exploits the differences in reference symbol timing for different channels to resolve ambiguities in the frequency offset estimation. Based on the initial frequency offset estimates, a hypothesis table is constructed providing hypothesized frequency offsets for each channel for a plurality of possible offset regions. An error metric for each offset region is calculated based on the difference of the hypothesized frequency offsets. The set of hypothesized frequency offsets that minimize the error metric is selected as the final frequency offset estimates.

25. 发明申请

US20120230218A1 Method and Base Station for Detecting a HARQ-ACK Codeword 有权
标题翻译：用于检测HARQ-ACK码字的方法和基站
公开(公告)号：US20120230218A1
公开(公告)日：2012-09-13
申请号：US13510271
申请日：2010-11-12
申请人： Oskar Mauritz , Fredrik Huss
发明人： Oskar Mauritz , Fredrik Huss
IPC分类号： H04W24/00 , H04W52/02
CPC分类号： H04L1/1607 , H04L2001/125
摘要： A method in a base station for detecting a HARQ-ACK codeword comprised in a signal received from a UE is provided. The base station knows HARQ-ACK codewords being possible to detect. The base station receives (401) a signal from the UE comprising a modulation symbol. The base station estimates (402) a SNR value for the received signal, and calculates (403) soft values for the modulation symbol. When the SNR value is lower than a predetermined threshold value and when the modulation symbol of the received signal comprises more than two bits per modulation symbol, the base station uses a first mode. The first mode comprises correlating (405) only the two first calculated soft values for the modulation symbol with the one or more known possible HARQ-ACK codewords. In other cases, i.e. when the first mode is not used, the base station uses a second mode. The second mode comprises correlating (408) all calculated soft values for the modulation symbol with the known possible HARQ-ACK codewords.
摘要翻译：提供了一种用于检测包括在从UE接收的信号中的HARQ-ACK码字的基站中的方法。基站知道可以检测的HARQ-ACK码字。基站接收（401）包括调制符号的来自UE的信号。基站估计（402）接收信号的SNR值，并计算（403）调制符号的软值。当SNR值低于预定阈值时，并且当接收信号的调制符号包括每个调制符号多于两个比特时，基站使用第一模式。第一模式包括（405）仅将调制符号的两个第一计算的软值与一个或多个已知的可能的HARQ-ACK码字相关联。在其他情况下，即当不使用第一模式时，基站使用第二模式。第二模式包括将调制符号的所有计算的软值与已知的可能的HARQ-ACK码字相关联（408）。

26. 发明授权

US08230306B2 Method and apparatus relating to channel decoding 有权
标题翻译：与信道解码有关的方法和装置
公开(公告)号：US08230306B2
公开(公告)日：2012-07-24
申请号：US12302999
申请日：2006-06-01
申请人： Fredrik Huss
发明人： Fredrik Huss
IPC分类号： G06F11/00
CPC分类号： H03M13/3994 , H03M13/09 , H03M13/175 , H03M13/4123 , H03M13/6362 , H04L1/0041 , H04L1/0059 , H04L1/0061 , H04L1/0073
摘要： The present invention relates to channel decoding and provides ways and means for improved channel decoding of data frames. The frame has been channel encoded and transmitted to a receiver (3a). The frame includes a part (51, 53) with information that is unknown to the receiver and another part (54, 55) with information for which the receiver generates at least one data hypothesis predicting its information content. The receiver performs a hypothesis-based decoding (149) of the received encoded frame, wherein the at least one data hypothesis is used to improve a probability of successful decoding. The invention may advantageously be used to improve decoding of frames containing short control messages with fill bits, e.g. acknowledgement messages (17).
摘要翻译：本发明涉及信道解码，并且提供了改进数据帧的信道解码的方式和手段。该帧已被信道编码并被发送到接收机（3a）。该帧包括具有对于接收机未知的信息的部分（51,53）和具有信息的另一部分（54,55），其中接收器生成预测其信息内容的至少一个数据假设。接收机执行接收的编码帧的基于假设的解码（149），其中使用至少一个数据假设来提高成功解码的概率。本发明可以有利地用于改善包含具有填充比特的短控制消息的帧的解码，例如，确认消息（17）。

27. 发明申请

US20120063294A1 Method for a Radio Base Station and a Radio Base Station in a Communication Network System for Assisting in or Obtaining Assistance in the UL Reception of Signals 有权
标题翻译：用于协助或获得UL接收信号协助的通信网络系统中的无线基站和无线基站的方法
公开(公告)号：US20120063294A1
公开(公告)日：2012-03-15
申请号：US12882348
申请日：2010-09-15
申请人： Jacob Österling , Franz Heiser , Henrik Olson , Fredrik Huss , Pontus Adolfsson
发明人： Jacob Österling , Franz Heiser , Henrik Olson , Fredrik Huss , Pontus Adolfsson
IPC分类号： H04J11/00
CPC分类号： H04L27/2665 , H04L5/0035 , H04L25/0204 , H04L27/2636 , H04L27/2688 , H04L27/2689 , H04L2025/03414 , H04W56/0045
摘要： In cellular radio systems it is a problem to provide service to UE (user equipment) on the cell border. In systems that apply a frequency re-use of one, and OFDM access technology, the uplink direction need be improved. One embodiment of this application relates to a radio base station that is equipped with one or more FFT processor/s in addition to the FFT-processor that is adapted for being adjusted to the timed aligned arrival of signals from UE served by the radio base station. The additional FFT processor/s is adapted for being adjusted to the arrival of one or more signals from UE that are served by other radio base station/s. The radio base station is further adapted to send Fourier processed signal information relating to the UE of the other radio base station/s and thereby assist the other radio base station in signal reception. The application also relates to a method for assisting another radio base station in signal reception, and to a method for receiving assistance from another radio base station in signal reception.
摘要翻译：在蜂窝无线电系统中，向小区边界上的UE（用户设备）提供服务是一个问题。在应用频率重用的系统和OFDM接入技术中，需要提高上行方向。本申请的一个实施例涉及除了FFT处理器之外还配备有一个或多个FFT处理器的无线电基站，该FFT处理器适于被调整为来自由无线电基站服务的UE的信号的定时对准到达。附加的FFT处理器适于被调整为来自UE的一个或多个由其他无线电基站服务的信号的到达。无线基站还适于发送与其他无线基站的UE有关的傅里叶处理信号信息，从而辅助另一无线基站进行信号接收。本申请还涉及一种用于辅助另一无线电基站进行信号接收的方法，以及一种用于在信号接收中从另一无线电基站接收辅助的方法。

28. 发明申请

US20130170590A1 Receiver Node and A Method Therein for Compensating Frequency Offset 有权
标题翻译：接收机节点及其补偿频率偏移的方法
公开(公告)号：US20130170590A1
公开(公告)日：2013-07-04
申请号：US13820814
申请日：2010-09-17
申请人： Mattias Hyll , Fredrik Huss
发明人： Mattias Hyll , Fredrik Huss
IPC分类号： H04L25/02
CPC分类号： H04L25/0206 , H04L27/0014 , H04L27/2657 , H04L27/2675 , H04L27/2686 , H04L2027/0065 , H04L2027/0087
摘要： According to embodiments herein an ambiguity problem when compensating for frequency offset may be solved by compensating a received reference symbol according to two different frequency offset hypotheses; the estimated frequency offset and the a mirrored version of the same. Then by comparing the compensated reference symbol of the different frequency hypotheses with a target reference symbol, which is known at the receiver node 12, the frequency offset hypothesis which is most likely is used to compensate a received data symbol.
摘要翻译：根据本文的实施例，可以通过根据两个不同的频率偏移假设补偿接收到的参考符号来解决补偿频率偏移时的模糊问题; 估计的频率偏移和镜像版本相同。然后，通过将不同频率假设的补偿参考符号与在接收器节点12处已知的目标参考符号进行比较，最有可能的频率偏移假设用于补偿接收到的数据符号。

29. 发明申请

US20130121315A1 Uplink Synchronization Processing 审中-公开
标题翻译：上行同步处理
公开(公告)号：US20130121315A1
公开(公告)日：2013-05-16
申请号：US13520952
申请日：2010-01-15
申请人： Alexander Langereis , Fredrik Huss
发明人： Alexander Langereis , Fredrik Huss
IPC分类号： H04W56/00
CPC分类号： H04W56/0045
摘要： Uplink synchronization of user equipment, UE, (30, 40, 50) served by a radio base station, RBS, (20) is enabled by triggering (re)start of timing alignment, TA, timer (180) in response to a first TA command. Uplink timing of data received from the UE (30, 40, 50) during a measuring time window (63) constituting a defined sub-interval of a time interval (60) of the TA timer (180) is measured and employed for determining a timing advance for the UE (30, 40, 50). Transmission of a second TA command comprising a notification of the timing advance is co-scheduled together with a scheduled downlink data transmission to the UE (30, 40, 50) during a following scheduling time window (65) constituting a defined sub-interval of the time interval (60). The number of TA commands that are scheduled by themselves are minimized to free radio resources and increase the downlink throughput.
摘要翻译：由无线电基站RBS（20）服务的用户设备UE（30,40,50）的上行链路同步通过触发（重新）定时对准的开始，TA，计时器（180）响应于第一 TA指令。测量构成TA定时器（180）的时间间隔（60）的限定子间隔的测量时间窗（63）期间从UE（30,40,50）接收的数据的上行时序，并用于确定 UE的定时提前（30,40,50）。在后续的调度时间窗口（65）中，包括定时提前通知的第二TA命令的传输与调度的下行链路数据传输一起被调度到UE（30,40,50）时间间隔（60）。自己调度的TA命令的数量被最小化，以便释放无线电资源并增加下行吞吐量。

30. 发明授权

US08380154B2 Method and arrangement for interference mitigation 有权
标题翻译：干扰减轻的方法和安排
公开(公告)号：US08380154B2
公开(公告)日：2013-02-19
申请号：US12941121
申请日：2010-11-08
申请人： Fredrik Lindqvist , Fredrik Huss
发明人： Fredrik Lindqvist , Fredrik Huss
IPC分类号： H04B1/00
CPC分类号： H04B7/0871 , H04B7/0854 , H04B17/345
摘要： In a method of mitigating interference for received signals in a communication system, receiving S10 a transmitted signal via at least two antenna elements, estimating S20 a channel for the received signals, and estimating S30 a disturbance covariance matrix based on the channel estimate, which estimated disturbance covariance matrix represents received interference plus noise of the received signals. Subsequently, adapting S40 the estimated covariance matrix by enhancing the diagonal elements of the covariance matrix to provide an enhanced covariance matrix, to reduce the spread in eigenvalues of the covariance matrix, and thereby improve the robustness of the covariance matrix. Finally, selectively S50 using IRC and/or MRC to mitigate interference of the received signals, based on at least the channel estimate and on the enhanced covariance matrix, to provide a received signal with improved quality on channels with Doppler frequency.
摘要翻译：在减轻通信系统中的接收信号的干扰的方法中，经由至少两个天线元件接收S10发送的信号，估计S20接收信号的信道，并且基于所估计的信道估计估计S30干扰协方差矩阵干扰协方差矩阵表示接收信号的接收干扰加噪声。随后，通过增强协方差矩阵的对角元素来适应S40估计的协方差矩阵，以提供增强的协方差矩阵，以减小协方差矩阵的特征值的扩展，从而提高协方差矩阵的鲁棒性。最后，基于至少信道估计和增强协方差矩阵，使用IRC和/或MRC选择性地使用S50来减轻接收信号的干扰，以在具有多普勒频率的信道上提供具有改进质量的接收信号。

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