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1. 发明申请

WO2010084127A1 METHOD AND ARRANGEMENT OF DELAY SPREAD COMPENSATION 审中-公开
标题翻译：延迟补偿的方法和布置
公开(公告)号：WO2010084127A1
公开(公告)日：2010-07-29
申请号：PCT/EP2010/050629
申请日：2010-01-20
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , LINDOFF, Bengt , NORDSTRÖM, Fredrik , LINCOLN, Bo , ROSENQVIST, Anders
发明人： LINDOFF, Bengt , NORDSTRÖM, Fredrik , LINCOLN, Bo , ROSENQVIST, Anders
IPC分类号： H04L25/03
CPC分类号： H04L25/03006 , H04L25/0216 , H04L2025/03426
摘要： A method of delay spread compensation, suitable for use in a communication device a having plurality of receiver antennas, is disclosed. The method comprises receiving a plurality of signals, each via a respective antenna, wherein each signal comprises a signal component corresponding to a transmitted signal, and wherein each received signal experiences a respective channel impulse response having a corresponding delay spread; determining estimates of each of the channel impulse responses; calculating post-coding characteristics based on the estimates of the channel impulse responses; and post-coding the plurality of received signals using the post- coding characteristics to produce at least a first delay spread compensated signal. Corresponding computer program product, processing arrangement and communication device are also disclosed.
摘要翻译：公开了适用于具有多个接收机天线的通信设备中的延迟扩展补偿方法。该方法包括：经由相应的天线接收多个信号，其中每个信号包括对应于发射信号的信号分量，并且其中每个接收信号经历具有相应延迟扩展的相应信道脉冲响应; 确定每个信道脉冲响应的估计; 基于信道脉冲响应的估计来计算后编码特性; 以及使用所述后编码特征对所述多个接收信号进行后编码，以产生至少第一延迟扩展补偿信号。还公开了相应的计算机程序产品，处理布置和通信设备。

2. 发明申请

WO2011101263A1 DETECTING A TRANSMITTED OFDM SIGNAL IN A RECEIVER HAVING AT LEAST TWO RECEIVER BRANCHES 审中-公开
标题翻译：在具有两个接收器分支的接收器中检测发送的OFDM信号
公开(公告)号：WO2011101263A1
公开(公告)日：2011-08-25
申请号：PCT/EP2011/051586
申请日：2011-02-03
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , LINDOFF, Bengt , LINCOLN, Bo , NORDSTRÖM, Fredrik
发明人： LINDOFF, Bengt , LINCOLN, Bo , NORDSTRÖM, Fredrik
IPC分类号： H04L27/26 , H04B7/08
CPC分类号： H04L27/2647 , H04B7/0845 , H04L25/0202 , H04L27/2666
摘要： A transmitted OFDM signal is detected in a receiver of a wireless communication system. The receiver has at least two receiver branches, each comprising an antenna, a front end receiver, a Discrete Fourier Transform unit, and a channel estimator. The receiver further comprises a detector for detecting received data symbols. The method comprises the steps of determining (101) a system bandwidth associated with the transmitted signal; comparing (102) the determined system bandwidth with a predetermined value; determining (103), if the system bandwidth is lower than the predetermined value, channel estimates separately for each branch, and detecting (104) received data symbols from the received signals and corresponding channel estimates; and calculating (105), if the system bandwidth is higher than the predetermined value, a weighted sum of signals from each branch, determining (106) a combined channel estimate, and detecting (107) received data symbols from the weighted sum and the combined channel estimate.
摘要翻译：在无线通信系统的接收机中检测到发送的OFDM信号。接收器具有至少两个接收器分支，每个接收器分支包括天线，前端接收器，离散傅立叶变换单元和信道估计器。接收机还包括用于检测接收到的数据符号的检测器。该方法包括以下步骤：确定（101）与发射信号相关联的系统带宽; 将所确定的系统带宽与预定值进行比较（102）; 确定（103）如果系统带宽低于预定值，则针对每个分支分别进行信道估计，并从接收到的信号和对应的信道估计中检测（104）接收到的数据符号; 以及计算（105）如果所述系统带宽高于所述预定值，则来自每个分支的信号的加权和，确定（106）组合信道估计，并且从所述加权和和组合中检测（107）接收到的数据符号频道估计。

3. 发明申请

WO2013023840A1 CHANNEL QUALITY INDEX DETERMINATION 审中-公开
标题翻译：渠道质量指标确定
公开(公告)号：WO2013023840A1
公开(公告)日：2013-02-21
申请号：PCT/EP2012/063178
申请日：2012-07-05
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , LINDOFF, Bengt , NORDSTRÖM, Fredrik
发明人： LINDOFF, Bengt , NORDSTRÖM, Fredrik
IPC分类号： H04B17/00
CPC分类号： H04L5/0057 , H04B17/24 , H04B17/309 , H04B17/373 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/1812 , H04L1/20 , H04L1/203 , H04W24/08 , H04W72/085
摘要： A method of a transceiver arranged to operate in a cellular communication system comprising cells is disclosed. The method comprises receiving a transmission from a first cell; determining an interfering signal and its occupation in time and/or frequency; determining reduced values in the received signal corresponding to the occupation in time and/or frequency of the interfering signal; and measuring a quotient between desired signal and non-desired signal of reference symbols of the received signal. A channel quality index, CQI, is formed taking into account reduction of values performed at the reducing, and the CQI is reported to the communication system. A transceiver and computer program for the same are also disclosed.
摘要翻译：公开了一种布置成在包括小区的蜂窝通信系统中操作的收发机的方法。该方法包括从第一小区接收传输; 确定干扰信号及其在时间和/或频率上的占用; 确定对应于干扰信号的时间和/或频率中的占用的接收信号中的减小值; 并测量接收信号的参考符号的期望信号和非期望信号之间的商。考虑到减少执行的值的减少而形成信道质量指标CQI，并将CQI报告给通信系统。还公开了一种用于其的收发器和计算机程序。

4. 发明申请

WO2012116924A1 REMOTE RADIO UNIT TIMING PROCEDURES TO COMPENSATE FOR CONTROL AND DATA INFORMATION BEING SUPPLIED BY DIFFERENT RADIO UNITS 审中-公开
标题翻译：远程无线电单元计时程序，用于补偿由不同无线电单元提供的控制和数据信息
公开(公告)号：WO2012116924A1
公开(公告)日：2012-09-07
申请号：PCT/EP2012/053105
申请日：2012-02-23
申请人： Telefonaktiebolaget L M Ericsson (publ) , LINDOFF, Bengt , NORDSTRÖM, Fredrik , WILHELMSSON, Leif
发明人： LINDOFF, Bengt , NORDSTRÖM, Fredrik , WILHELMSSON, Leif
IPC分类号： H04L25/03 , H04L27/26
CPC分类号： H04L25/03343 , H04L27/2646 , H04W56/0015 , H04W56/0045
摘要： An Orthogonal Frequency Division Multiplexing (OFDM) symbol for transmission from a non-reference transceiver to a user equipment (UE) in a mobile communication system is generated by ascertaining a general timing for transmission of OFDM symbols, wherein the general timing is associated with a reference transceiver. A UE timing relative to the general timing is ascertained. An initial resource element (RE) value is adjusted by a pre-compensating amount to obtain a pre-compensated RE value, wherein the pre-compensating amount is based on the UE timing relative to the general timing. The pre-compensated resource element value is supplied as one of a plurality of values to be transmitted. An IFFT is performed on the plurality of values to be transmitted to obtain pre-compensated initial signal information. A cyclic prefix is appended to the pre-compensated initial signal information to form an OFDM symbol for transmission from the non-reference transceiver to the UE.
摘要翻译：通过确定用于OFDM符号的传输的一般定时来生成用于在移动通信系统中从非参考收发器到用户设备（UE）的传输的正交频分复用（OFDM）符号，其中，一般定时与参考收发器。确定相对于一般定时的UE定时。通过预补偿量来调整初始资源元素（RE）值以获得预补偿RE值，其中预补偿量基于相对于一般定时的UE定时。预补偿资源元素值被提供为要发送的多个值之一。对要发送的多个值执行IFFT以获得预补偿的初始信号信息。将循环前缀附加到预补偿的初始信号信息以形成用于从非参考收发器到UE的传输的OFDM符号。

5. 发明申请

WO2009127512A1 SYSTEM AND METHOD OF RECEIVING AND PROCESSING MULTICOMMUNICATION SIGNALS 审中-公开
标题翻译：接收和处理多媒体信号的系统和方法
公开(公告)号：WO2009127512A1
公开(公告)日：2009-10-22
申请号：PCT/EP2009/053658
申请日：2009-03-27
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , LINDOFF, Bengt , ANDGART, Niklas , NORDSTRÖM, Fredrik
发明人： LINDOFF, Bengt , ANDGART, Niklas , NORDSTRÖM, Fredrik
IPC分类号： H04L27/26 , H04L5/00
CPC分类号： H04L5/0007 , H04L5/0041 , H04L27/2657 , H04L27/2662 , H04W56/0035 , H04W56/0045
摘要： A receiver receives and front-end processes a plurality of component carrier signals, each carrier spaced apart in frequency. The digitized, baseband component carrier signals are inspected to determine estimates of timing offsets between the carriers. A control unit selects a first component carrier signal having data scheduled to the receiver. If data is scheduled to the receiver on other component carrier signals, the control unit generates timing and frequency offset adjustment control signals to time-and frequency-align each other component carrier signal having relevant data, to the first component carrier signal. All the relevant component carrier signals are then combined, and a single OFDM symbol, spanning all the relevant component carriers, is presented to an FFT for symbol detection.
摘要翻译：接收机接收和前端处理多个分量载波信号，每个载波频率间隔开。检查数字化的基带分量载波信号以确定载波之间的定时偏移的估计。控制单元选择具有被调度给接收机的数据的第一分量载波信号。如果在其他分量载波信号上将数据调度给接收机，则控制单元产生定时和频率偏移调整控制信号，以将具有相关数据的每个其它分量载波信号时间和频率对齐到第一分量载波信号。然后组合所有相关的分量载波信号，将跨越所有相关分量载波的单个OFDM符号呈现给用于符号检测的FFT。

6. 发明申请

WO2013185854A1 INTERFERENCE CANCELLATION IN WIRELESS NETWORKS 审中-公开
标题翻译：干线在无线网络中的取消
公开(公告)号：WO2013185854A1
公开(公告)日：2013-12-19
申请号：PCT/EP2012/069242
申请日：2012-09-28
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , LINDOFF, Bengt , ANDGART, Niklas , NORDSTRÖM, Fredrik
发明人： LINDOFF, Bengt , ANDGART, Niklas , NORDSTRÖM, Fredrik
IPC分类号： H04J11/00 , H04B1/7103 , H04L27/26
CPC分类号： H04L5/0032 , H04B1/7103 , H04B2201/70702 , H04B2201/70707 , H04J11/0056 , H04L5/0007
摘要： The present application relates to a method of a wireless device for interference cancellation (IC) in a cellular radio network system comprising a serving network node serving said wireless device. The method comprises using l a first IC method for at least partly removing a time aligned symbol of an interfering radio signal from at least a first symbol of a time slot received from the serving network node. The method also comprises using 2 a second IC method, different from the first IC method, for at least partly removing a non-time aligned symbol of an interfering radio signal from at least a second symbol of said time slot received from the serving network node.
摘要翻译：本申请涉及一种在蜂窝无线电网络系统中用于干扰消除（IC）的无线设备的方法，其包括服务于所述无线设备的服务网络节点。该方法包括使用第一IC方法，用于从从服务网络节点接收的时隙的至少第一符号至少部分地去除干扰无线电信号的时间对准符号。该方法还包括使用与第一IC方法不同的第二IC方法，用于从从服务网络节点接收的所述时隙的至少第二符号至少部分地去除干扰无线电信号的非时间对准符号。

7. 发明申请

WO2009127357A2 TIME-ERROR AND FREQUENCY-ERROR CORRECTION IN A MULTI-CARRIER WIRELESS COMMUNICATIONS SYSTEM 审中-公开
标题翻译：多载波无线通信系统中的时间误差和频率误差校正
公开(公告)号：WO2009127357A2
公开(公告)日：2009-10-22
申请号：PCT/EP2009/002634
申请日：2009-04-09
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , LINDOFF, Bengt , BERNHARDSSON, Bo , NORDSTRÖM, Fredrik
发明人： LINDOFF, Bengt , BERNHARDSSON, Bo , NORDSTRÖM, Fredrik
IPC分类号： H04L27/00 , H04B1/38 , H04B1/40 , H04B1/00
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。

8. 发明申请

WO2009060023A3 METHOD AND APPARATUS FOR INTERFERENCE REJECTION COMBINING AND DETECTION 审中-公开
公开(公告)号：WO2009060023A3
公开(公告)日：2009-05-14
申请号：PCT/EP2008/065045
申请日：2008-11-06
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , LINDOFF, Bengt , NILSSON, Johan , WILHELMSSON, Leif , NORDSTRÖM, Fredrik
发明人： LINDOFF, Bengt , NILSSON, Johan , WILHELMSSON, Leif , NORDSTRÖM, Fredrik
IPC分类号： H04B7/08 , H04L25/02
摘要： A multi-branch OFDM receiver combines diversity signals received over different receiver branches using interference rejection combining. The receiver generates first channel estimates associated with a serving base station, second channel estimates associated with at least one non-serving base station, and a time offset between the serving base station and non-serving base station. The receiver computes a noise covariance matrix based on the second channel estimates and the time offset, and then combines the diversity signals received over different branches using the first channel estimates and the noise covariance matrix.

9. 发明申请

WO2009059986A2 CHANNEL ESTIMATION FOR SYNCHRONIZED CELLS IN A CELLULAR COMMUNICATION SYSTEM 审中-公开
标题翻译：细胞通信系统中同步细胞的信道估计
公开(公告)号：WO2009059986A2
公开(公告)日：2009-05-14
申请号：PCT/EP2008/064976
申请日：2008-11-05
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , LINDOFF, Bengt , NORDSTRÖM, Fredrik
发明人： LINDOFF, Bengt , NORDSTRÖM, Fredrik
IPC分类号： H04L25/02 , H04L5/00
CPC分类号： H04L5/0007 , H04J11/0086 , H04L25/0204 , H04L25/022
摘要： Channel estimation is performed by user equipment operating in a mobile communications system. Estimation involves receiving a signal and analyzing it to detect a signal component from a neighboring cell. Depending on outcome, one or both of the following are determined: whether a power level of the signal component from the neighboring cell exceeds a power threshold level; and whether a difference between timing parameters of the neighboring cell?s signal component and that from a serving cell is less than a timing threshold level. If the power level of the neighboring cell?s signal component exceeds the power threshold level and the difference between the timing parameters of the signal components from the neighboring cell and that of the serving cell is less than the timing threshold level, then a joint channel estimation process is performed. Otherwise, a single channel estimation process is performed.
摘要翻译：信道估计由在移动通信系统中操作的用户设备执行。估计涉及接收信号并对其进行分析以检测来自相邻小区的信号分量。取决于结果，确定以下中的一个或两个：来自相邻小区的信号分量的功率电平是否超过功率阈值电平; 以及相邻小区信号分量的定时参数与来自服务小区的定时参数之间的差是否小于定时阈值水平。如果相邻小区信号分量的功率电平超过功率阈值电平，并且来自相邻小区的信号分量和服务小区的信号分量的定时参数之间的差小于定时阈值电平，则联合信道执行估计处理。否则，执行单个信道估计处理。

10. 发明申请

WO2012121660A1 CELL SEARCH PROCEDURE FOR HETEROGENEOUS NETWORKS 审中-公开
标题翻译：异构网络的细胞搜索程序
公开(公告)号：WO2012121660A1
公开(公告)日：2012-09-13
申请号：PCT/SE2012/050263
申请日：2012-03-09
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , LINDOFF, Bengt , NORDSTRÖM, Fredrik
发明人： LINDOFF, Bengt , NORDSTRÖM, Fredrik
IPC分类号： H04J11/00 , H04W48/16
CPC分类号： H04W48/16 , H04J11/004 , H04J11/0076 , H04W56/0015 , H04W56/0085 , H04W84/045 , H04W84/047 , Y02D70/1262
摘要： In a heterogeneous network, low power cells are detected by correlating a first and second signal originating from an unknown cell, such as synchronization signals, e.g., SSS received in a first and second time period (e.g., subframes 0 and of a frame with corresponding sets of possible SSS signals. The cell identities for the candidate cells can be used to determine corresponding reference symbol sequences for the candidate cells. The final determination of the cell identity is then made by correlating a third signal originating from the unknown cell, such as a reference signal received in a third time period (e.g., an almost blank subframe or a broadcastsubframe)with the set of reference signalsfor the candidate cells. The correct cell identity is determined to be the cell identity yielding the greatest correlation with its corresponding reference signal.
摘要翻译：在异构网络中，通过将来自未知小区的第一和第二信号相互关联来检测低功率小区，例如同步信号，例如在第一和第二时间段（例如，子帧0和具有对应的帧的帧）中接收的SSS 候选小区的小区标识可以用于确定候选小区的相应参考符号序列，然后通过将源自未知小区的第三信号相关联来进行小区标识的最终确定，例如在候选小区的第三时间段（例如，几乎空白的子帧或广播的子帧）中接收的参考信号与候选小区的参考信号的集合，确定正确的小区标识是与其对应的参考信号产生最大相关性的小区标识。

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