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

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (publ) ,  WILHELMSSON, Leif ,  LINDOFF, Bengt ,  LØVENDAHL, Arild

Inventor： WILHELMSSON, Leif ,  LINDOFF, Bengt ,  LØVENDAHL, Arild

IPC: H04W72/12

CPC classification number: H04W72/1215 ,  H04W16/14

Abstract: 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.

Abstract translation: 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。

公开(公告)号：WO2009156366A1

公开(公告)日：2009-12-30

申请号：PCT/EP2009/057745

申请日：2009-06-22

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) ,  WILHELMSSON, Leif ,  LINDOFF, Bengt ,  PERSSON, Joakim ,  ROSENQVIST, Anders

Inventor： WILHELMSSON, Leif ,  LINDOFF, Bengt ,  PERSSON, Joakim ,  ROSENQVIST, Anders

IPC: H04N7/24 ,  H04N7/26

CPC classification number: H04N21/8456 ,  H04H20/22 ,  H04H20/426 ,  H04N19/132 ,  H04N19/159 ,  H04N19/187 ,  H04N19/39 ,  H04N19/40 ,  H04N19/587 ,  H04N19/61 ,  H04N21/234327 ,  H04N21/2381 ,  H04N21/2383 ,  H04N21/2662 ,  H04N21/6112 ,  H04N21/6131 ,  H04N21/631

Abstract: A method of broadcasting a data stream associated with a service is disclosed. The method comprises splitting the data stream into a plurality of different self-contained sub-streams, and transmitting each of the sub-streams using a respective transmission resource, wherein a first transmission resource used to transmit a first of the sub-streams is different from a second transmission resource used to transmit a second of the sub-streams. A method for use in a wireless communication receiver is also disclosed. The method comprises receiving two or more different self-contained sub-streams related to a same broadcast service, and processing two or more of the received two or more sub-streams and combining the result. Corresponding system, receiver and computer program products are also disclosed.

Abstract translation: 公开了一种广播与服务相关联的数据流的方法。 该方法包括将数据流分解成多个不同的自包含子流，以及使用相应的传输资源发送每个子流，其中用于发送第一子流的第一传输资源是不同的 从用于发送第二子流的第二传输资源。 还公开了一种在无线通信接收机中使用的方法。 该方法包括接收与相同广播服务相关的两个或多个不同的自包含子流，以及处理所接收的两个或多个子流中的两个或更多个并组合结果。 还公开了相应的系统，接收机和计算机程序产品。

公开(公告)号：WO2009106513A1

公开(公告)日：2009-09-03

申请号：PCT/EP2009/052142

申请日：2009-02-24

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) ,  LINDOFF, Bengt ,  WILHELMSSON, Leif

Inventor： LINDOFF, Bengt ,  WILHELMSSON, Leif

IPC: H04B17/00

CPC classification number: H04B17/336

Abstract: A method of estimating a signal quality value in a receiver, the method comprising receiving a plurality of reference symbols; determining error rate for the plurality of received reference symbols; mapping the determined error rate to a signal quality value model; and determining mapped signal quality from the model to be signal quality value estimate. A signal quality estimator, a receiver, a communication apparatus, and a computer program for estimating signal quality are also disclosed.

Abstract translation: 一种估计接收机中的信号质量值的方法，所述方法包括：接收多个参考符号; 确定所述多个接收的参考符号的误码率; 将确定的错误率映射到信号质量值模型; 并将来自模型的映射信号质量确定为信号质量值估计。 还公开了一种用于估计信号质量的信号质量估计器，接收器，通信装置和计算机程序。

公开(公告)号：WO2009074530A1

公开(公告)日：2009-06-18

申请号：PCT/EP2008/067000

申请日：2008-12-08

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (publ) ,  WILHELMSSON, Leif ,  NORDSTRÖM, Fredrik ,  BJÖRKMAN, Lars

Inventor： WILHELMSSON, Leif ,  NORDSTRÖM, Fredrik ,  BJÖRKMAN, Lars

IPC: H04L27/26

CPC classification number: H04L27/2662 ,  H04L5/0007 ,  H04L25/0216 ,  H04L25/022 ,  H04L25/0232 ,  H04L27/2657 ,  H04L27/2665

Abstract: Methods for positioning an FFT-window in an OFDM-receiver are disclosed as well as electronic apparatuses and computer program products for performing the methods. The method comprises determining a position of the FFT-window in relation to one or more OFDM-symbols of a received OFDM-signal, using the position of the FFT-window to obtain a first OFDM-symbol from the received OFDM-signal, and applying an FFT to the first OFDM-symbol to produce an FFT-output signal. The method also comprises determining a frequency dependent phase rotation component of the FFT-output signal, and removing the determined frequency dependent phase rotation component from the FFT-output signal to obtain a compensated FFT-output signal. A delay spread estimate is calculated based on at least one of the FFT-output signal and the compensated FFT-output signal, and the position of the FFT-window is adjusted based on at least the determined frequency dependent phase rotation component and the calculated delay spread estimate.

Abstract translation: 公开了在OFDM接收机中定位FFT窗口的方法以及用于执行方法的电子设备和计算机程序产品。 该方法包括使用FFT窗口的位置从接收的OFDM信号中获得第一OFDM符号来确定FFT窗口相对于接收的OFDM信号的一个或多个OFDM符号的位置，以及 对第一OFDM符号应用FFT以产生FFT输出信号。 该方法还包括确定FFT输出信号的频率相关相位旋转分量，以及从FFT输出信号中去除所确定的频率相关相位旋转分量以获得经补偿的FFT输出信号。 基于FFT输出信号和经补偿的FFT输出信号中的至少一个来计算延迟扩展估计，并且至少基于所确定的频率相关相位旋转分量和所计算的延迟来调整FFT窗口的位置 传播估计。

公开(公告)号：WO2009074529A1

公开(公告)日：2009-06-18

申请号：PCT/EP2008/066999

申请日：2008-12-08

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) ,  BERNHARDSSON, Bo ,  BJÖRKMAN, Lars ,  WILHELMSSON, Leif

Inventor： WILHELMSSON, Leif

IPC: H04L25/02 ,  H04L27/26

CPC classification number: H04L25/022 ,  H04L5/0048 ,  H04L25/0232 ,  H04L27/2647 ,  H04L27/2662

Abstract: Methods for calculating a delay spread estimate in an OFDM-receiver are described, along with computer program products and electronic apparatuses for performing said methods. The methods comprise determining a position of an FFT-window in relation to one or more OFDM-symbols of a received OFDM-signal and using the determined position to obtain a first OFDM-symbol from the received OFDM-signal. An FFT is applied to the first OFDM-symbol to produce an FFT-output signal. A frequency dependent phase rotation component of the FFT-output signal is determined and removed from the FFT-output signal. A number of zero-crossings of at least one of a real component and an imaginary component of a transfer function of a channel, over which the received OFDM-signal has been transmitted, derived from the FFT-output signal where the frequency dependent phase rotation component has been removed is determined, and a delay spread estimate is calculated based on the determined number of zero-crossings.

Abstract translation: 与用于执行所述方法的计算机程序产品和电子设备一起描述用于计算OFDM接收机中的延迟扩展估计的方法。 所述方法包括相对于所接收的OFDM信号的一个或多个OFDM符号确定FFT窗口的位置，并且使用所确定的位置从接收的OFDM信号中获得第一OFDM符号。 对第一OFDM符号应用FFT以产生FFT输出信号。 FFT输出信号的频率相关相位旋转分量被确定并从FFT输出信号中去除。 频率依赖相位旋转的FFT输出信号导出传输函数的传输函数的实数分量和虚分量中的至少一个的多个零交叉 已经去除了分量，并且基于确定的过零点数来计算延迟扩展估计。

公开(公告)号：WO2008155238A2

公开(公告)日：2008-12-24

申请号：PCT/EP2008057041

申请日：2008-06-05

Applicant: ERICSSON TELEFON AB L M ,  LINDOFF BENGT ,  WILHELMSSON LEIF

Inventor： LINDOFF BENGT ,  WILHELMSSON LEIF

IPC: H04L27/26

CPC classification number: H04J11/0076 ,  H04L5/0007 ,  H04L25/022 ,  H04L25/03159 ,  H04L27/2655 ,  H04L27/2656 ,  H04L27/2666

Abstract: 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 t using the P-SyS; based on t, 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.

Abstract translation: 一种用于同步小区组和循环前缀（CP）检测的方法和相关联的装置和系统，具有使用P-SyS确定主同步信号（P-SyS）定时t的步骤; 基于t，确定次同步信号（S-SyS）定时; 放置单个快速傅里叶变换（FFT）窗口; FFT处理信号以获得频域S-SyS符号; 均衡频域S-SyS信号; 相位校正S-SyS信号; 并通过产生最大能量的相关性来检测细胞组和CP长度。

公开(公告)号：WO2008128828A1

公开(公告)日：2008-10-30

申请号：PCT/EP2008/053024

申请日：2008-03-13

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (publ) ,  WILHELMSSON, Leif ,  PAMP, Johan

Inventor： WILHELMSSON, Leif ,  PAMP, Johan

IPC: H04L29/08

CPC classification number: H04H20/426 ,  H04L5/0007 ,  H04L5/0046 ,  H04L5/0058 ,  H04L67/04 ,  H04L67/325 ,  H04W52/0238 ,  H04W52/0261 ,  Y02D70/168 ,  Y02D70/22 ,  Y02D70/26

Abstract: In a method for receiving data in a mobile communication device (103) in a broadcast system (100) in which an amount of data is transmitted; said mobile communication device (103) comprising a battery (104); wherein the method comprises the step of receiving a part of said amount of data, wherein the method further comprises the step of determining said part of said amount of data based on a charge state of the battery. In this way, the mobile communication device is able to download/receive an amount of data in dependence to an actual condition experienced by said mobile communication device. A condition of the mobile communication device may, in this context be, for example, a reception condition, a power consumption condition, a battery capacity condition, a battery charging condition, etc.

Abstract translation: 一种用于在其中发送数据量的广播系统（100）中的移动通信设备（103）中接收数据的方法; 所述移动通信设备（103）包括电池（104）; 其中所述方法包括接收所述数据量的一部分的步骤，其中所述方法还包括基于所述电池的充电状态来确定所述数据量的所述部分的步骤。 以这种方式，移动通信设备能够根据所述移动通信设备所经历的实际状况来下载/接收数据量。 在这种情况下，移动通信设备的条件可以是例如接收条件，功耗条件，电池容量条件，电池充电条件等。

公开(公告)号：WO2007068438A2

公开(公告)日：2007-06-21

申请号：PCT/EP2006/011935

申请日：2006-12-12

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) ,  WILHELMSSON, Leif ,  SVENSSON, Jim ,  BERKEMAN, Anders

Inventor： WILHELMSSON, Leif ,  SVENSSON, Jim ,  BERKEMAN, Anders

IPC: G06F17/14

CPC classification number: G06F17/142 ,  H04L27/265 ,  H04L27/2662

Abstract: A DIF FFT stage is used in an N bin FFT, wherein N is an even integer. The DIF FFT stage includes swap logic that receives a first input sample, x ( v ), and a second input sample, x ( v + N /2), and selectively supplies either the first and second input samples at respective first and second swap logic output ports or alternatively the second and first input samples at the respective first and second swap logic output ports, wherein 0 ≤ v N/ 2 . The DIF FFT stage further includes a summing unit for adding values supplied by the first and second swap logic output ports; a differencing unit for subtracting values supplied by the first and second swap logic output ports; and twiddle factor logic that multiplies a value supplied by the differencing unit by a twiddle factor, W N (v + s)mod( N /2) , where s is an integer representing an amount of circular shift of N input samples.

Abstract translation: 在N bin FFT中使用DIF FFT级，其中N是偶数整数。 DIF FFT级包括接收第一输入采样x（v）和第二输入采样x（v + N / 2）的交换逻辑，并且在相应的第一和第二交换处选择性地提供第一和第二输入采样 逻辑输出端口或备选地在相应的第一和第二交换逻辑输出端口处的第二和第一输入采样，其中0 = v

公开(公告)号：WO2005048546A2

公开(公告)日：2005-05-26

申请号：PCT/EP2004012797

申请日：2004-11-11

Applicant: ERICSSON TELEFON AB L M ,  WILHELMSSON LEIF ,  ANDERSSON LENNART ,  BERNHARDSSON BO

Inventor： WILHELMSSON LEIF ,  ANDERSSON LENNART ,  BERNHARDSSON BO

IPC: H04L25/02 ,  H04L27/26

CPC classification number: H04L25/0234 ,  H04L5/0048 ,  H04L25/022 ,  H04L25/0222 ,  H04L27/2647

Abstract: Methods and apparatus that achieve good channel estimation without using unnecessarily complex interpolation filters are described. Adaptive interpolation filtering of a signal in a receiver includes determining at least one correlation function parameter of the channel and determining a filter configuration based on the correlation function parameter. The interpolation may be performed in time, where a Doppler frequency shift can serve as the correlation function parameter, or in frequency, where a root mean square or maximum delay spread can serve as the correlation function parameter, or both. A worst case signal-to-noise ratio may be used in determining the filter configuration, or, optionally, the signal-to-noise ratio can be determined in real time. The filter configuration can be determined in real time or selected from one of a plurality of predetermined configurations having different complexities.

Abstract translation: 描述了不使用不必要的内插滤波器实现良好信道估计的方法和装置。 接收机中的信号的自适应插值滤波包括确定信道的至少一个相关函数参数，并且基于相关函数参数来确定滤波器配置。 可以在时间上执行插值，其中多普勒频移可以用作相关函数参数，或频率，其中均方根或最大延迟扩展可以用作相关函数参数，或两者。 可以使用最坏情况的信噪比来确定滤波器配置，或者可选地，可以实时地确定信噪比。 滤波器配置可以实时确定或者从具有不同复杂度的多个预定配置之一中选择。

公开(公告)号：WO2004066549A1

公开(公告)日：2004-08-05

申请号：PCT/EP2003/014486

申请日：2003-12-16

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (publ) ,  WILHELMSSON, Leif

Inventor： WILHELMSSON, Leif

IPC: H04L7/02

CPC classification number: H04L7/0062 ,  H04L7/0029 ,  H04L7/0337 ,  H04L27/18 ,  H04L27/233

Abstract: A signal processing apparatus (400;800) comprising: a demodulator (e.g. a PSK demodulator) (407;900) arranged to demodulate a received signal, which carries consecutive symbols (a 1 ,..., a 4 ) at a symbol rate, wherein the demodulator (407;900) is arranged, based on sample values of the received signal, to calculate an error value (ϕ m ) of a given symbol relative to a decision-directed determination of an expected symbol value (Ι); and a phase-shifter (406,409;801;1002,1013) arranged to shift the phase of sampling points in time at which points in time, sample values of the received signal is provided to the demodulator (407;1000). The invention is characterized in that the apparatus (400;900) comprises a processor (408;601;1000) arranged to evaluate an error metric (τ), at the symbol rate, for a given symbol as a function of the error value (ϕ) and symbol values (II), and to determine whether to shift the phase of the sampling points in time based on further evaluation of the error metric (τ). Thereby an optimal sampling instant can be provided based on estimation of Inter Symbol Interference.

Abstract translation: 一种信号处理设备（400; 800），包括：解调器（例如，PSK解调器）（407; 900），被配置为解调以符号速率传送连续符号（a1，...，a4）的接收信号，其中 基于接收信号的采样值来布置解调器（407; 900）以相对于预期符号值（Iota）的决策导向确定来计算给定符号的误差值（φm）; 以及移位器（406,409; 801; 1002,1013），被配置为将所述时间点的采样点的相位偏移，所述接收信号的采样值被提供给所述解调器（407; 1000）。 本发明的特征在于，所述设备（400; 900）包括处理器（408; 601; 1000），其被配置为以符号率对作为所述误差值的函数的给定符号来估计误差量度（τ） φ）和符号值（II），并且基于误差度量（τ）的进一步评估来确定是否及时地移位采样点的相位。 因此，可以基于Inter符号干扰的估计来提供最佳采样时刻。