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1. 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。

2. 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。

3. 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。

4. 发明申请

WO2010092115A1 DATA PACKET COMMUNICATION SCHEDULING BASED ON THE REMAINING NUMBER OF RETRANSMISSIONS IN A COMMUNICATION DEVICE HAVING A PLURALITY OF TRANSCEIVER SYSTEMS 审中-公开
标题翻译：基于具有多个收发系统的通信设备中的剩余数量的数据包通信调度
公开(公告)号：WO2010092115A1
公开(公告)日：2010-08-19
申请号：PCT/EP2010/051710
申请日：2010-02-11
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ) , WILHELMSSON, Leif , LINDOFF, Bengt , LØVENDAHL, Arild
发明人： WILHELMSSON, Leif , LINDOFF, Bengt , LØVENDAHL, Arild
IPC分类号： H04W72/12
CPC分类号： H04W72/1215 , H04W16/14
摘要： A communication device has a plurality of concurrently operating transceiver systems, each operating in a respectively different one of a plurality of communication systems. Operation of the transceiver systems is coordinated by receiving a plurality of requests from different ones of the transceiver systems, each of the requests being a request to access a communication medium for the purpose of transmitting or receiving a data packet. Utilization of an available time period is scheduled by selecting which one or ones of the requests to grant based, at least in part, on how many remaining times out of a maximum number of times each of the transmission systems' data packet is permitted to be retransmitted compared to other requests, on whether the requests are requests to transmit a data packet, and on whether the requests are requests to receive a data packet.
摘要翻译：通信设备具有多个同时操作的收发器系统，每个收发器系统分别在多个通信系统中的不同的一个中工作。通过从不同收发器系统接收多个请求来协调收发器系统的操作，每个请求是为了发送或接收数据分组的目的而访问通信介质的请求。调度可用时间段的利用是通过选择至少部分地基于允许传输系统的数据分组被允许的最大次数中剩余多少次来批准的请求中的哪一个或哪些与其他请求相比重传，关于请求是发送数据分组的请求，以及请求是否是请求接收数据分组。

5. 发明申请

WO2011044920A1 FREQUENCY SCANNING TECHNIQUE FOR A CELL SEARCH PROCEDURE 审中-公开
标题翻译：细胞搜索程序的频率扫描技术
公开(公告)号：WO2011044920A1
公开(公告)日：2011-04-21
申请号：PCT/EP2009/007450
申请日：2009-10-16
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ) , WILHELMSSON, Leif , LINDOFF, Bengt
发明人： WILHELMSSON, Leif , LINDOFF, Bengt
IPC分类号： H04W48/16
CPC分类号： H04W48/16 , H04W8/005 , H04W24/00 , H04W76/10 , H04W84/12 , H04W84/18 , H04W88/08
摘要： A technique for scanning multiple carrier frequencies during a cell search procedure is described. The cell search procedure involves for an investigated frequency multipie serially arranged processing steps until it will be determined that a network connection can be established on the investigated frequency. A method embodiment of this technique comprises performing a first processing step for an investigated first frequency, and in parallel with performing a second or further processing step for the first frequency, performing the first processing step for an investigated second frequency.
摘要翻译：描述了在小区搜索过程中扫描多个载波频率的技术。小区搜索过程涉及所研究的频率乘法串行排列的处理步骤，直到确定可以在调查频率上建立网络连接。该技术的方法实施例包括对所研究的第一频率执行第一处理步骤，并且与执行用于第一频率的第二或另外的处理步骤并行地执行针对所研究的第二频率的第一处理步骤。

6. 发明申请

WO2008049713A1 CELL ID DETECTION IN AN OFDM COMMUNICATION SYSTEM 审中-公开
标题翻译： OFDM通信系统中的小区ID检测
公开(公告)号：WO2008049713A1
公开(公告)日：2008-05-02
申请号：PCT/EP2007/060465
申请日：2007-10-02
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) , LINDOFF, Bengt , WILHELMSSON, Leif
发明人： LINDOFF, Bengt , WILHELMSSON, Leif
IPC分类号： H04L27/26 , H04Q7/38 , H04L12/28
CPC分类号： H04L27/2647 , H04J11/0069 , H04L27/2613
摘要： Ascertaining which one of a number of cells of a cellular communication system transmitted an OFDM signal involves obtaining reference symbols from the OFDM signal. Compensating phase shift values for phase aligning the plurality of reference symbols are estimated and used to generate phase corrected reference symbols. At least two scrambling code sequences are applied to the phase corrected reference symbols to obtain at least two de-scrambled phase corrected reference symbol sequences, wherein each of the scrambling codes is associated with a respectively different one of the cells of the cellular communication system. A power value of each of the de-scrambled phase corrected reference symbol sequences is ascertained. That one of the scrambling codes that is associated with a highest one of the power values is ascertained, thereby ascertaining which one of the number of cells of the cellular communication system transmitted the OFDM signal.
摘要翻译：确定传输OFDM信号的蜂窝通信系统的多个小区中的哪个小区涉及从OFDM信号获得参考符号。用于相位对准多个参考符号的补偿相移值被估计并用于产生相位校正的参考符号。至少两个扰码序列被施加到相位校正的参考符号以获得至少两个去加扰相位校正的参考符号序列，其中每个扰码与蜂窝通信系统的分别不同的一个小区相关联。确定每个解扰相位校正参考符号序列的功率值。确定与功率值中最高功率值相关联的扰码中的一个，从而确定蜂窝通信系统的小区数目中的哪一个发送OFDM信号。

7. 发明申请

WO2012173530A1 SUB-CARRIER ALLOCATION IN A WIRELESS COMMUNICATION SYSTEM USING RELAYS 审中-公开
标题翻译：使用继电器的无线通信系统中的子载波分配
公开(公告)号：WO2012173530A1
公开(公告)日：2012-12-20
申请号：PCT/SE2011/050720
申请日：2011-06-13
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ) , WAGER, Stefan , HOYMANN, Christian , LINDOFF, Bengt , WILHELMSSON, Leif
发明人： WAGER, Stefan , HOYMANN, Christian , LINDOFF, Bengt , WILHELMSSON, Leif
IPC分类号： H04W72/04
CPC分类号： H04L5/003 , H04B7/15 , H04W72/1289 , H04W84/047
摘要： Exemplifying embodiments herein relate to a relay node and a method therein for communicating data to a user equipment, the relay node being associated with a base station, is provided. The method comprises receiving information from the base station indicating a first set of resource blocks of a subframe comprising control information. The method further comprises identifying, based on the received information, at least one resource block outside said first set of resource blocks, and scheduling, to the user equipment, transmissions on the at least one identified resource block.
摘要翻译：本文的示例性实施例涉及一种用于向用户设备传送数据的中继节点及其方法，所述中继节点与基站相关联。该方法包括从基站接收指示包含控制信息的子帧的第一组资源块的信息。所述方法还包括基于所接收的信息来识别所述第一资源块集合之外的至少一个资源块，并且向所述用户设备调度所述至少一个识别的资源块上的传输。

8. 发明申请

WO2008155238A3 SIMULTANEOUS CELL GROUP AND CYCLIC PREFIX DETECTION METHOD, APPARATUS AND SYSTEM 审中-公开
公开(公告)号：WO2008155238A3
公开(公告)日：2008-12-24
申请号：PCT/EP2008/057041
申请日：2008-06-05
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) , LINDOFF, Bengt , WILHELMSSON, Leif
发明人： LINDOFF, Bengt , WILHELMSSON, Leif
IPC分类号： H04L27/26
摘要： A method, and associated apparatus and system, for simultaneous cell group and cyclic prefix (CP) detection, having the steps of determining primary synchronization signal (P-SyS) timing τ using the P-SyS; based on τ, determine a secondary synchronization signal (S-SyS) timing; placing a single Fast Fourier Transform (FFT) window; FFT processing the signal to obtain the frequency domain S-SyS symbols; equalizing the frequency domain S-SyS signal; phase correcting the S-SyS signal; and detecting the cell group and CP length by the correlation giving maximum energy.

9. 发明申请

WO2004100461A1 WIRELESS AD HOC COMMUNICATION WITH DIFFERENT POWER LEVELS FOR MESSAGE HEADER AND PAYLOAD 审中-公开
标题翻译：无线电通信与不同功率级别的消息头和负载
公开(公告)号：WO2004100461A1
公开(公告)日：2004-11-18
申请号：PCT/EP2004/004241
申请日：2004-04-22
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ) , WILHELMSSON, Leif , TAORI, Rakesh
发明人： WILHELMSSON, Leif , TAORI, Rakesh
IPC分类号： H04L12/56
CPC分类号： H04W52/50 , H04W84/18
摘要： A method of communicating messages among a number of radio communications devices via a communications medium, each of said messages comprising a message header and a message payload. The method comprises transmitting the message header of a first message, where the first message is to be transmitted from a first one of the number of radio communications devices to at least a second one of the number of radio communications devices, at a first power level high enough to enable each of the number of radio communications devices to receive the message header; transmitting the message payload of the first message at a second power level determined separately from the first power level to be high enough to enable the second radio communications device to receive the message payload.
摘要翻译：一种通过通信介质在多个无线电通信设备之间传送消息的方法，每个所述消息包括消息报头和消息有效载荷。该方法包括：将第一消息的消息标题从第一无线电通信装置中的第一消息发射到第一无线电通信装置中的至少第二个，至少第二消息标题的第一功率电平足够高以使每个无线电通信设备能够接收消息报头; 以与第一功率电平分开确定的第二功率电平传输第一消息的消息有效载荷足够高以使得第二无线电通信装置能够接收消息有效载荷。

10. 发明申请

WO2008074730A1 UPLINK INTER-CARRIER INTERFERENCE CANCELLATION FOR OFDMA SYSTEMS 审中-公开
标题翻译：用于OFDMA系统的UPLINK INTER-CARRIER INTERFERENCE CANCELLATION OF OFDMA SYSTEMS
公开(公告)号：WO2008074730A1
公开(公告)日：2008-06-26
申请号：PCT/EP2007/063933
申请日：2007-12-14
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ) , WILHELMSSON, Leif , NEVALAINEN, Andreas , SVENSSON, Jim
发明人： WILHELMSSON, Leif , NEVALAINEN, Andreas , SVENSSON, Jim
IPC分类号： H04L25/03 , H04L27/26
CPC分类号： H04L25/03159 , H04L5/023 , H04L25/03006 , H04L27/2657 , H04L2025/03414
摘要： Inter-carrier interference (ICI) cancellation in an OFDMA receiving signals from two transmitters is performed by identifying the transmitted sub-carriers that cause the largest ICI to sub-carriers received from other transmitters, and removing the ICI contribution from these sub- carriers. This may be accomplished by calculating the ICI terms only based on the interfering sub-carrier and the frequency offset. Alternatively, the transmissions causing the ICI are demodulated, the ICI on other signals is then determined and subtracted, and other signals are then demodulated. Which transmissions cause the largest ICI on others depends on the relative strength of the corresponding sub-carriers and how much orthogonality is lost. The latter might be due to frequency error, Doppler spread, or a combination of both.
摘要翻译：通过识别从其他发射机接收到的最大ICI到子载波的发送子载波，并从这些子载波中移除ICI贡献，来执行来自两个发射机的OFDMA接收信号中的载波间干扰（ICI）消除。这可以通过仅基于干扰子载波和频率偏移来计算ICI项来实现。或者，导致ICI的传输被解调，然后确定和减去其他信号上的ICI，然后解调其他信号。哪些传输导致其他最大的ICI取决于相应副载波的相对强度以及丢失多少正交性。后者可能是由于频率误差，多普勒扩展或两者的组合。

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