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1. 发明申请

WO2003041350A1 CO-CHANNEL INTERFERENCE DETECTOR FOR CELLULAR COMMUNICATIONS SYSTEMS 审中-公开
标题翻译：用于细胞通信系统的CO-CHANNEL干扰检测器
公开(公告)号：WO2003041350A1
公开(公告)日：2003-05-15
申请号：PCT/EP2002/011269
申请日：2002-10-08
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ) , LINDOFF, Bengt , NORDSTRÖM, Fredrik , HOLST, Jan
发明人： LINDOFF, Bengt , NORDSTRÖM, Fredrik , HOLST, Jan
IPC分类号： H04L25/03
CPC分类号： H04L25/03057 , H04B1/1027 , H04B1/123 , H04B17/20 , H04J3/0605 , H04L7/04 , H04L25/0224 , H04L25/03006 , H04L25/067 , H04L2025/03401
摘要： The invention offers a method of estimating the channel parameters of a co-channel interferer. Initial, rough estimates of the desired channel and of the desired data symbols are made, and a fraction of the estimated desired signal is subtracted from the received signal. The fraction depends on the uncertainty of the desired signal. The synchronisation position of the co-channel interferer is determined, which is used to reject the co-channel interference. In a pre-processing stage only rough estimates of the desired transmission channel and of the desired data symbols are needed. Consequently, a much faster convergence of the algorithm used for detecting the co-channel interference results. When the co-channel interference signal has been detected, it can be eliminated by any suitable method.
摘要翻译：本发明提供了估计同频道干扰源的信道参数的方法。进行期望信道和期望数据符号的初始粗略估计，并且从接收信号中减去估计的期望信号的一部分。分数取决于所需信号的不确定度。确定同信道干扰源的同步位置，其用于拒绝同信道干扰。在预处理阶段中，仅需要所需传输信道和期望数据符号的粗略估计。因此，用于检测同信道干扰结果的算法收敛得更快。当检测到同信道干扰信号时，可以通过任何合适的方法来消除。

2. 发明申请

WO2008135541A1 DETERMINING A FREQUENCY ERROR IN A RECEIVER OF A WIRELESS COMMUNICATIONS SYSTEM 审中-公开
标题翻译：确定无线通信系统接收器中的频率错误
公开(公告)号：WO2008135541A1
公开(公告)日：2008-11-13
申请号：PCT/EP2008/055454
申请日：2008-05-05
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) , LINDOFF, Bengt , NORDSTRÖM, Fredrik , WILHELMSSON, Leif
发明人： LINDOFF, Bengt , NORDSTRÖM, Fredrik , WILHELMSSON, Leif
IPC分类号： H04L27/26
CPC分类号： H04L27/2657 , H04L27/2613 , H04L27/2675
摘要： A frequency error of received signals in an OFDM receiver of a wireless communications system is determined. Symbols of a given duration are transmitted as cells on sub-carrier frequencies; and some of the cells are pilot cells modulated with reference information. The method comprises the steps of selecting at least three pilot cells (p 0 , p 1 , p 2 ) from different symbols and different sub-carriers; determining the symbol and the sub-carrier on which each pilot cell is transmitted; determining for each pilot cell a phase difference between received and generated signals; calculating therefrom a change in phase difference (Φ x ) caused by the frequency error; and calculating the frequency error from the calculated change in phase difference (Φ x ). In this way a receiver capable of determining a frequency error also in situations where only a short data burst, such as a single resource block, is available for the estimation is provided.
摘要翻译：确定无线通信系统的OFDM接收机中的接收信号的频率误差。给定持续时间的符号作为小区在子载波频率上发送; 并且一些小区是用参考信息调制的导频小区。该方法包括以下步骤：从不同的符号和不同的子像素中选择至少三个导频小区（p 0，0，p 1，p 2，运营商; 确定发送每个导频小区的符号和子载波; 为每个导频小区确定接收和产生的信号之间的相位差; 由此计算由频率误差引起的相位差（F×x×）的变化; 以及根据所计算的相位差的变化（F x x S）计算频率误差。以这种方式，能够在只有短数据突发（例如单个资源块）可用于估计的情况下也能够确定频率误差的接收机被提供。

3. 发明申请

WO2009083336A1 IDENTIFYING A SEQUENCE OF RECEIVED SIGNALS 审中-公开
标题翻译：识别接收到的信号的序列
公开(公告)号：WO2009083336A1
公开(公告)日：2009-07-09
申请号：PCT/EP2008/065853
申请日：2008-11-19
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) , LINDOFF, Bengt
发明人： LINDOFF, Bengt
IPC分类号： H04L27/26
CPC分类号： H04L27/2613 , H04J11/0069 , H04L5/0016
摘要： A sequence of received signals is identified, by a receiver of signals transmitted via a channel of a wireless communications system, as one of a number of known orthogonal sequences. The sequence of received signals is received (103); a modified sequence is calculated (105) by replacing some of the received signals by their complex conjugate values; the modified sequence is correlated (106) with each one of the number of known orthogonal sequences to obtain a correlation result for each of the known sequences; and the sequence of received signals is identified (107) as the known sequence having the largest correlation result. When some signals in the received sequence are complex conjugated before being correlated with the known sequences, the correlation sum will increase so that even in case of a considerable frequency error the correlation sum for the correct sequence will be sufficiently large to be distinguished from noise.
摘要翻译：通过无线通信系统的信道发送的信号的接收机识别接收信号的序列，作为多个已知正交序列之一。接收信号的序列（103）; 通过用接合信号的复共轭值代替一些接收信号来计算修正序列（105）修改的序列与已知正交序列的数量中的每一个相关（106）以获得每个已知序列的相关结果; 并且识别接收信号的序列（107）作为具有最大相关结果的已知序列。当接收到的序列中的一些信号在与已知序列相关之前是复共轭时，相关和将增加，使得即使在相当大的频率误差的情况下，正确序列的相关和将足够大以与噪声区分开。

4. 发明申请

WO2009053140A1 ADAPTIVE RECEIVER METHOD AND APPARATUS 审中-公开
标题翻译：自适应接收方法和装置
公开(公告)号：WO2009053140A1
公开(公告)日：2009-04-30
申请号：PCT/EP2008/061605
申请日：2008-09-03
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ) , NILSSON, Johan , LINDOFF, Bengt
发明人： NILSSON, Johan , LINDOFF, Bengt
IPC分类号： H04L25/06 , H04L5/14 , H04B7/26
CPC分类号： H04L25/067 , H04B2201/709727 , H04L1/0025 , H04L1/0026 , H04L1/0027 , H04L1/1671 , H04L1/1854 , H04L5/0007 , H04L5/1484 , H04L25/0224
摘要： Receiver resources are allocated based on how subframes are allocated within in a frame between downlink and uplink transmissions and how often the receiver is expected to report feedback information associated with the downlink transmissions. Additional time is available for processing received data blocks if the feedback information derived from those blocks must be reported later than expected due to the unavailability of uplink subframes. According to one embodiment, received signals are processed by receiving transmission configuration information indicating how downlink and uplink subframes are allocated within a frame in the time domain. Based on the transmission configuration information, the receiver determines whether a delay that exceeds a feedback reporting interval assigned to the receiver will occur when reporting feedback information associated with the downlink subframes. Receiver resources are allocated based on whether a delay will occur when reporting the feedback information.
摘要翻译：基于如何在下行链路和上行链路传输之间的帧内分配子帧来分配接收机资源，以及接收机期望报告与下行链路传输相关联的反馈信息的频率。如果从这些块导出的反馈信息由于上行链路子帧的不可用性而必须在晚于报告的情况下报告，则附加时间可用于处理接收到的数据块。根据一个实施例，通过接收指示在时域中的帧内如何分配下行链路和上行链路子帧的传输配置信息来处理所接收的信号。基于传输配置信息，当报告与下行链路子帧相关联的反馈信息时，接收机确定是否将发生超过分配给接收机的反馈报告间隔的延迟。基于在报告反馈信息时是否发生延迟来分配接收器资源。

5. 发明申请

WO2009033945A1 POWER-AWARE SELECTION OF RADIO ACCESS TECHNOLOGY 审中-公开
标题翻译：无线电接入技术的功率选择
公开(公告)号：WO2009033945A1
公开(公告)日：2009-03-19
申请号：PCT/EP2008/061118
申请日：2008-08-26
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ) , LINDOFF, Bengt , HAARTSEN, Jacobus , WALLÉN, Anders
发明人： LINDOFF, Bengt , HAARTSEN, Jacobus , WALLÉN, Anders
IPC分类号： H04W48/18
CPC分类号： H04W48/18 , H04W28/18 , H04W48/16 , H04W52/0229 , H04W88/06 , Y02D70/1222 , Y02D70/1262 , Y02D70/142 , Y02D70/146 , Y02D70/164 , Y02D70/23 , Y02D70/24 , Y02D70/25
摘要： Methods and apparatus are disclosed for operating a multi-mode wireless communications device to select a radio access technology (RAT) requiring the lowest energy consumption by the device for a desired operating mode. An exemplary method comprises scanning a plurality of frequency bands to determine a set of available radio access technologies that support the desired operating mode, and evaluating, for each available RAT, RAT-specific system parameters and RAT-specific operating conditions. Based on the evaluation, the RAT requiring the lowest energy consumption by the wireless device for the desired operating mode is selected.
摘要翻译：公开了用于操作多模式无线通信设备以选择要求所需操作模式的设备所需的最低能量消耗的无线电接入技术（RAT）的方法和装置。一种示例性方法包括扫描多个频带以确定支持期望操作模式的一组可用的无线电接入技术，以及针对每个可用的RAT评估特定于RAT的系统参数和特定于RAT的操作条件。基于该评估，选择由无线设备为期望的操作模式需要最低能耗的RAT。

6. 发明申请

WO2008049714A1 ROBUST AND LOW-COMPLEXITY COMBINED SIGNAL POWER ESTIMATION FOR OFDM 审中-公开
标题翻译： OFDM的稳健和低复杂度组合信号功率估计
公开(公告)号：WO2008049714A1
公开(公告)日：2008-05-02
申请号：PCT/EP2007/060468
申请日：2007-10-02
申请人： Telefonaktiebolaget LM Ericsson (publ) , WILHELMSSON, Leif , LINDOFF, Bengt
发明人： WILHELMSSON, Leif , LINDOFF, Bengt
IPC分类号： H04L27/26
CPC分类号： H04L1/20 , H04L25/0206 , H04L25/0212 , H04L27/2665
摘要： Ascertaining a signal power of an Orthogonal Frequency Division Multiplexing (OFDM) signal involves ascertaining a plurality of channel estimates from the OFDM signal. Compensating phase shift values for phase aligning the plurality of channel estimates are estimated and used to generate phase corrected channel estimates. The phase corrected channel estimates are coherently combined, thereby ascertaining the signal power of the OFDM signal. The compensating phase shift values may be based on a channel characteristic (e.g., delay spread) or may alternatively be hypothesized.
摘要翻译：确定正交频分复用（OFDM）信号的信号功率涉及确定来自OFDM信号的多个信道估计。对相位对齐多个信道估计的补偿相移值进行估计并用于生成经相位校正的信道估计。相位校正的信道估计被相干地组合，由此确定OFDM信号的信号功率。补偿相移值可以基于信道特性（例如，延迟扩展）或者可以替换地被假设。

7. 发明申请

WO2007147788A1 MOBILE ASSISTED TIMING ALIGNMENT 审中-公开
标题翻译：移动辅助定时对齐
公开(公告)号：WO2007147788A1
公开(公告)日：2007-12-27
申请号：PCT/EP2007/055975
申请日：2007-06-15
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ) , LINDOFF, Bengt , HAARTSEN, Jacobus
发明人： LINDOFF, Bengt , HAARTSEN, Jacobus
IPC分类号： H04B7/26 , H04J3/06
CPC分类号： H04W56/0045 , H04B7/2681
摘要： Timing alignment of User Equipment (UE) in a communications system is maintained by measuring an environmental condition of the UE, and determining a present magnitude of change metric representing a present magnitude of change of the environmental condition relative to a baseline value. The present magnitude of change metric is combined with a previous accumulation metric to obtain a present accumulation metric. If it is detected that the present accumulation metric satisfies a predetermined relationship with respect to the threshold value (e.g., is greater than the threshold value), then the UE transmits a timing advance request. An environmental condition can be, for example, a Doppler shift of a received signal, a Received Signal Strength Indication from a received signal, a temperature within the UE, a humidity within the UE, a supply voltage of the UE, or a symbol timing of a received signal.
摘要翻译：用户设备（UE）在通信系统中的定时对齐是通过测量UE的环境状况来维持的，并且确定当前幅度的变化度量，其表示当前环境条件变化幅度相对于基准值。将当前幅度的变化量度与先前的累积度量相结合以获得当前的累积度量。如果检测到当前累积度量相对于阈值满足预定关系（例如，大于阈值），则UE发送定时提前请求。环境条件可以是例如接收信号的多普勒频移，来自接收信号的接收信号强度指示，UE内的温度，UE内的湿度，UE的电源电压或符号定时的接收信号。

8. 发明申请

WO2007068724A1 METHOD AND DEVICE FOR SIGNAL PROCESSING 审中-公开
标题翻译：用于信号处理的方法和装置
公开(公告)号：WO2007068724A1
公开(公告)日：2007-06-21
申请号：PCT/EP2006/069677
申请日：2006-12-13
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ) , LINDOFF, Bengt , WILHELMSSON, Leif
发明人： LINDOFF, Bengt , WILHELMSSON, Leif
IPC分类号： H04L27/26 , H04B1/10
CPC分类号： H04L27/2647 , H04B1/1036 , H04L25/0204 , H04L2025/03414
摘要： A device (100, 200) and a method is provided for processing a signal. The device comprises a filter unit 5 (101, 201); an FFT unit (102, 202) operatively connected to the filter unit and being located after the filter unit along a signal path for the signal; and a compensation unit (103, 203) operatively connected to the FFT unit and being located after the FFT unit in the signal path. The compensation unit is adapted to compensate for attenuation of the signal, which has been caused by the filter unit.
摘要翻译：提供了一种用于处理信号的装置（100,200）和方法。该装置包括一个过滤器单元5（101,201）; FFT单元（102,202），其可操作地连接到所述滤波器单元并沿着所述信号的信号路径位于所述滤波器单元之后; 以及可操作地连接到FFT单元并位于信号路径中的FFT单元之后的补偿单元（103,203）。补偿单元适于补偿由过滤单元引起的信号的衰减。

9. 发明申请

WO2004107784A1 CELL SEARCH SCHEDULING IN A WIRELESS CELLULAR COMMUNICATIO NETWORK 审中-公开
标题翻译：在无线蜂窝通信网络中的小区搜索调度
公开(公告)号：WO2004107784A1
公开(公告)日：2004-12-09
申请号：PCT/EP2004/004884
申请日：2004-05-07
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ) , LINDOFF, Bengt , PALENIUS, Torgny , ERICSSON, Anders
发明人： LINDOFF, Bengt , PALENIUS, Torgny , ERICSSON, Anders
IPC分类号： H04Q7/32
CPC分类号： H04W48/16 , H04W8/26 , H04W48/08 , H04W52/0216 , H04W56/00 , H04W68/00 , H04W84/042
摘要： A method performed by a mobile communication unit (10) when operating in stand-by mode in a wireless cellular communication network. The receiver is activated in periods of relatively short duration (τ o ) to receive paging indicators (21) from the serving base station (20) and to receive identifying signals from the remote base station (30). After the first period a likelihood is assessed that a remote cell has been detected, and following the first period the receiver is activated in a second period of a duration (τ 1 ) depending an the assessed likelihood. If a remote cell has likely been detected, the second duration is longer than the first duration. Most of its stand-by time the mobile terminal will not detect a new cell, and most of the periods with the receiver activated will therefore be of the short first duration, the Power consumption of the receiver will be correspondingly reduced, and the stand-by time is correspondingly increased.
摘要翻译：一种在无线蜂窝通信网络中以待机模式操作时由移动通信单元（10）执行的方法。接收机在相对短的持续时间（tauo）的周期中被激活以从服务基站（20）接收寻呼指示符（21）并且从远程基站（30）接收识别信号。在第一阶段之后，评估出可能性已经检测到远程小区，并且在第一周期之后，根据所评估的可能性，接收机在持续时间（τ1）的第二周期中被激活。如果可能检测到远程小区，则第二个持续时间长于第一个持续时间。其大部分的待机时间，移动终端将不会检测到新的小区，并且接收机激活的大多数周期因此将处于短的第一时间段，接收机的功耗将相应地减少，按时间相应增加。

10. 发明申请

WO2004049661A1 CALCULATION OF SOFT DECISION VALUES USING RELIABILITY INFORMATION OF THE AMPLITUDE 审中-公开
标题翻译：使用AMPLITUDE的可靠性信息计算软决策值
公开(公告)号：WO2004049661A1
公开(公告)日：2004-06-10
申请号：PCT/EP2003/011230
申请日：2003-10-09
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ) , BERNHARDSSON, Bo , LINDOFF, Bengt , MALM, Peter
发明人： BERNHARDSSON, Bo , LINDOFF, Bengt , MALM, Peter
IPC分类号： H04L25/06
CPC分类号： H04L1/0045 , H04L1/18 , H04L25/067 , H04L27/38
摘要： A method of decoding a communications signal in a digital communications system, where the communications signal is modulated according to a modulation scheme, such as 16-QAM, including amplitude information. The method comprises the steps of generating (406) a likelihood value for a received communications signal; decoding (408) the communications signal based on at least the generated likelihood value. The method further comprises providing (302) a reliability indication of the amplitude information conveyed by the received communications signal; and generating the likelihood value on the basis of the provided reliability indication of the amplitude information.
摘要翻译：一种在数字通信系统中对通信信号进行解码的方法，其中通信信号根据包括幅度信息的诸如16-QAM的调制方案进行调制。该方法包括以下步骤：产生（406）接收到的通信信号的似然值; 至少基于所生成的似然值对通信信号进行解码（408）。该方法还包括提供（302）由所接收的通信信号传送的幅度信息的可靠性指示; 以及基于所提供的幅度信息的可靠性指示来生成似然值。

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