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1. 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。

2. 发明授权

US08750214B2 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：US08750214B2
公开(公告)日：2014-06-10
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： H04W4/00
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）。

3. 发明授权

US08744022B2 Glitch mitigation in a radio receiver 有权
标题翻译：无线电接收机中的毛刺减轻
公开(公告)号：US08744022B2
公开(公告)日：2014-06-03
申请号：US13515982
申请日：2009-12-18
申请人： Oskar Mauritz , Mats Åhlander , Fredrik Huss
发明人： Oskar Mauritz , Mats Åhlander , Fredrik Huss
IPC分类号： H04L27/00
CPC分类号： H04L27/3809
摘要： A basic idea is to determine (S1) occurrence of a glitch caused by operation of the AGC mechanism, identify (S2) those modulation symbols in a digitized version of the received signal that are affected by the glitch, each modulation symbol represented by a number of bits in combination, and then reduce (S3), for each of the identified modulation symbols, the contribution in representing the identified modulation symbol as provided by at least a subset of the bits of the modulation symbol. In this way, the adverse effects of the glitch can be effectively mitigated and subsequent detection of the desired signal can be significantly improved. This also means that the link performance will be significantly improved.
摘要翻译：一个基本思想是确定（S1）由AGC机构的操作引起的毛刺的发生，识别（S2）受毛刺影响的接收信号的数字化版本中的那些调制符号，每个调制符号由数字的比特，然后对于每个所识别的调制符号，减少（S3）表示由调制符号的比特的至少一个子集提供的所识别的调制符号的贡献。以这种方式，可以有效地减轻毛刺的不利影响，并且可以显着地提高对期望信号的后续检测。这也意味着链路性能将显着提高。

4. 发明授权

US08488483B2 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：在通信网络系统中的无线电基站和无线电基站的方法，用于协助或获得UL接收信号中的协助
公开(公告)号：US08488483B2
公开(公告)日：2013-07-16
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： H04B7/208
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。

5. 发明授权

US08340202B2 Method and apparatus for efficient soft modulation for gray-mapped QAM symbols 有权
标题翻译：用于灰度映射QAM符号的有效软调制的方法和装置
公开(公告)号：US08340202B2
公开(公告)日：2012-12-25
申请号：US12722169
申请日：2010-03-11
申请人： Fredrik Huss , Yi-Pin Eric Wang
发明人： Fredrik Huss , Yi-Pin Eric Wang
IPC分类号： H04L5/12
CPC分类号： H04L25/067 , H04L27/38
摘要： In one aspect, the present invention greatly simplifies soft modulation calculations, in part by exploiting certain properties of Gray-mapped QAM constellations used in modulating symbols of interest. In at least one embodiment, the simplified processing includes performing the soft modulation separately for the real and imaginary parts of each symbol of interest, by using the Gray mapping to decompose each of the real and imaginary parts into binary soft modulations for each bit, and then using a computationally-efficient table lookup to calculate the binary soft modulation. Here, the look-up table comprises pre-computed bit contributions to the complex soft symbol value to be formed for the symbol of interest.
摘要翻译：在一个方面，本发明大大简化了软调制计算，部分地通过利用在调制感兴趣符号中使用的灰色映射QAM星座的某些属性。在至少一个实施例中，简化处理包括通过使用格雷映射将每个实部和虚部分解为每个位的二进制软调制来分别对每个感兴趣符号的实部和虚部进行软调制，以及然后使用计算有效的表查找来计算二进制软调制。这里，查找表包括对要为感兴趣的符号形成的复合软符号值的预先计算的比特贡献。

6. 发明申请

US20120257696A1 GLITCH MITIGATION IN A RADIO RECEIVER 有权
标题翻译：无线电接收器中的减速
公开(公告)号：US20120257696A1
公开(公告)日：2012-10-11
申请号：US13515982
申请日：2009-12-18
申请人： Oskar Mauritz , Mats Åhlander , Fredrik Huss
发明人： Oskar Mauritz , Mats Åhlander , Fredrik Huss
IPC分类号： H04L27/00 , H04L25/00
CPC分类号： H04L27/3809
摘要： A basic idea is to determine (S1) occurrence of a glitch caused by operation of the AGC mechanism, identify (S2) those modulation symbols in a digitized version of the received signal that are affected by the glitch, each modulation symbol represented by a number of bits in combination, and then reduce (S3), for each of the identified modulation symbols, the contribution in representing the identified modulation symbol as provided by at least a subset of the bits of the modulation symbol. In this way, the adverse effects of the glitch can be effectively mitigated and subsequent detection of the desired signal can be significantly improved. This also means that the link performance will be significantly improved.
摘要翻译：一个基本思想是确定（S1）由AGC机构的操作引起的毛刺的发生，识别（S2）受毛刺影响的接收信号的数字化版本中的那些调制符号，每个调制符号由数字的比特，然后对于每个所识别的调制符号，减少（S3）表示由调制符号的比特的至少一个子集提供的所识别的调制符号的贡献。以这种方式，可以有效地减轻毛刺的不利影响，并且可以显着地提高对期望信号的后续检测。这也意味着链路性能将显着提高。

7. 发明申请

US20120113938A1 RANDOM ACCESS PROCEDURE UTILIZING CYCLIC SHIFT OF DEMODULATION REFERENCE SIGNAL 有权
标题翻译：随机访问程序利用解调参考信号的循环移位
公开(公告)号：US20120113938A1
公开(公告)日：2012-05-10
申请号：US13381750
申请日：2009-09-21
申请人： Daniel Larsson , Tobias Tynderfeldt , Fredrik Huss
发明人： Daniel Larsson , Tobias Tynderfeldt , Fredrik Huss
IPC分类号： H04W72/04
CPC分类号： H04W74/008 , H04W74/0833
摘要： A method and apparatus for accessing a wireless communication system, and for processing random access attempts. A mobile communication device detects random-access information transmitted by a base station, transmits a random-access preamble to the base station according to the random-access information, and receives a random-access response from the base station. The random-access response includes at least an allocation of uplink resources to be used for the next step in the random access procedure. The mobile device also selects a reference signal sequence index from a pre-determined set of sequence indexes, and transmits a first message to the base station using the uplink resource allocation provided in the random-access response. The first message includes a device identifier and a first demodulation reference signal derived from a base reference sequence shifted according to the selected sequence index.
摘要翻译：一种用于访问无线通信系统并用于处理随机接入尝试的方法和装置。移动通信设备检测由基站发送的随机接入信息，根据随机接入信息向基站发送随机接入前导码，并从基站接收随机接入响应。随机接入响应至少包括用于随机接入过程中的下一步骤的上行链路资源的分配。移动设备还从预定的序列索引集合中选择参考信号序列索引，并且使用随机接入响应中提供的上行链路资源分配向基站发送第一消息。第一消息包括从根据所选序列索引偏移的基本参考序列导出的设备标识符和第一解调参考信号。

8. 发明申请

US20060234633A1 Simultaneous channel estimation of a carrier and an interferer 有权
标题翻译：载波和干扰源的同时信道估计
公开(公告)号：US20060234633A1
公开(公告)日：2006-10-19
申请号：US11105016
申请日：2005-04-13
申请人： Fredrik Huss
发明人： Fredrik Huss
IPC分类号： H04B1/00
CPC分类号： H04L25/0236 , H04B1/1027 , H04L25/0242 , H04L25/03305 , H04W16/14 , H04W56/00
摘要： Interference suppression in a receiver in a wireless network that utilizes training sequences for synchronization and channel estimation, wherein the training sequence of an interfering channel overlaps the training sequence of a desired channel to cause degraded channel estimation, by generating a channel estimate for a carrier part of a received signal; generating a residual signal where the carrier part has been removed from the received signal; generating covariance matrix estimates for interferer channel estimate candidates; selecting carrier and interferer channel estimates having the lowest energy in the covariance matrix; and, explicitly generating the selected interferer channel estimate.
摘要翻译：在利用训练序列进行同步和信道估计的无线网络中的接收机中的干扰抑制，其中干扰信道的训练序列与期望信道的训练序列重叠以引起劣化的信道估计，通过生成用于载波部分的信道估计的接收信号; 产生载波部分已从接收信号中去除的残留信号; 生成干扰信道估计候选的协方差矩阵估计; 选择在协方差矩阵中具有最低能量的载波和干扰信道估计; 并且明确地产生所选择的干扰信道估计。

9. 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。

10. 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。

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