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1. 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。

2. 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。

3. 发明授权

US09374724B2 Channel estimation using reference signals 有权
标题翻译：使用参考信号的信道估计
公开(公告)号：US09374724B2
公开(公告)日：2016-06-21
申请号：US14355539
申请日：2011-11-03
申请人： Mats Åhlander , David Sandberg , Fredrik Huss , Pontus Arvidsson
发明人： Mats Åhlander , David Sandberg , Fredrik Huss , Pontus Arvidsson
IPC分类号： H04W72/12 , H04W24/06 , H04L25/02
CPC分类号： H04W24/06 , H04L25/0202 , H04L25/0224 , H04W72/1226
摘要： A method in a radio network node for estimating channel gain over frequencies of a bandwidth in a radio communications network. The radio network node measures a first channel gain based on a received power of a sounding reference signal over a first set of frequencies from a user equipment, which first set of frequencies is comprised in the frequencies of the bandwidth. Furthermore, the radio network node measures a second channel gain based on a received power of a received demodulation reference signal of a physical uplink shared channel over a second set of frequencies from the user equipment, which second set of frequencies is comprised in the frequencies of the bandwidth. The radio network node then estimates a third channel gain over the frequencies of the bandwidth based on the measured first channel gain and the measured second channel gain.
摘要翻译：一种无线电网络节点中用于估计无线电通信网络中的带宽频率上的信道增益的方法。无线电网络节点基于来自用户设备的第一组频率上的探测参考信号的接收功率来测量第一信道增益，该第一组频率包括在带宽的频率中。此外，无线电网络节点基于来自用户设备的第二组频率上的物理上行链路共享信道的接收解调参考信号的接收功率测量第二信道增益，该第二组频率包括在带宽。无线电网络节点然后基于所测量的第一信道增益和所测量的第二信道增益来估计带宽频率上的第三信道增益。

4. 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）。

5. 发明授权

US08605799B2 Estimation of frequency offset between a base station and mobile terminal 有权
公开(公告)号：US08605799B2
公开(公告)日：2013-12-10
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： H04L25/00 , H04L7/00
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.

6. 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.

7. 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）。

8. 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。

9. 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。

10. 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。

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