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    Method and Apparatus for Blind Decoding
    1.
    发明申请
    Method and Apparatus for Blind Decoding 有权
    盲解码的方法和装置

    公开(公告)号：US20090154607A1

    公开(公告)日：2009-06-18

    申请号：US12134243

    申请日：2008-06-06

    申请人： Bengt Lindoff ,  Matthias Kamuf ,  Fredrik Nordstrom

    发明人： Bengt Lindoff ,  Matthias Kamuf ,  Fredrik Nordstrom

    IPC分类号： H03D1/00

    CPC分类号： H04L1/0091 ,  H04L1/0038 ,  H04L1/0046

    摘要： According to the teachings presented herein, a method and apparatus provide a reduced search space for blindly decoding a message included in a signal received at a communication receiver, where the message has an unknown format. Improving blind detection efficiency in this manner offers numerous advantages, including but not limited to lower power consumption through reduced processing overhead, and lower power consumption through expanded sleep opportunities. As a non-limiting example, the communication receiver comprises a mobile station configured for operation according to Long Term Evolution (LTE) standards, as promulgated by the 3GPP for E-UTRA systems, where the mobile station is configured to reduce a search space of DCI message decoding by determining message format likelihoods and blindly decoding a received DCI message based on the message format likelihoods.

    摘要翻译： 根据本文呈现的教导，一种方法和装置提供减少的搜索空间，用于盲目地解码包括在通信接收器处接收的信号中的消息，其中消息具有未知格式。 以这种方式提高盲目检测效率提供了许多优点，包括但不限于通过减少处理开销降低功耗，并通过扩展的睡眠机会降低功耗。 作为非限制性示例，通信接收机包括被配置用于根据长期演进（LTE）标准进行操作的移动台，如3GPP针对E-UTRA系统所公布的，其中移动台被配置为减少搜索空间 通过确定消息格式似然性并基于消息格式可能性对接收的DCI消息进行盲解码来进行DCI消息解码。

    Maximum A Posteriori Interference Estimation in a Wireless Communication System
    3.
    发明申请
    Maximum A Posteriori Interference Estimation in a Wireless Communication System 有权
    无线通信系统中最大后验干扰估计

    公开(公告)号：US20100067627A1

    公开(公告)日：2010-03-18

    申请号：US12211470

    申请日：2008-09-16

    申请人： Bo Lincoln ,  Matthias Kamuf ,  Fredrik Nordstrom

    发明人： Bo Lincoln ,  Matthias Kamuf ,  Fredrik Nordstrom

    IPC分类号： H04B1/10

    CPC分类号： H04L1/20 ,  H04L25/0204 ,  H04L25/0228 ,  H04L25/03006 ,  H04L25/03821 ,  H04L2025/03414

    摘要： Methods and apparatus are disclosed for estimating inter-cell interference levels for resource elements of a received Orthogonal Frequency-Division Multiplexing (OFDM) signal. In an exemplary method in a wireless receiver, a reference symbol interference levels is measured for each of a plurality of reference symbols in a received OFDM signal, and interference scaling factors are mapped to each of a plurality of resource elements of the received OFDM signal. Each interference scaling factor reflects the probability that the corresponding resource element or group of resource elements is subject to interference from an interfering OFDM signal. Interference levels for each of the resource elements are then estimated as a function of the measured reference symbol interference levels and the interference scaling factors.

    摘要翻译： 公开了用于估计接收到的正交频分复用（OFDM）信号的资源元件的小区间干扰电平的方法和装置。 在无线接收机中的示例性方法中，对接收的OFDM信号中的多个参考符号中的每一个测量参考符号干扰电平，并且将干扰缩放因子映射到所接收的OFDM信号的多个资源元素中的每一个。 每个干扰比例因子反映相应的资源元素或资源元素组受干扰OFDM信号的干扰的概率。 然后将每个资源元素的干扰电平作为测量的参考符号干扰电平和干扰缩放因子的函数来估计。

    INTERFERENCE CANCELLATION IN WIRELESS NETWORKS
    4.
    发明申请
    INTERFERENCE CANCELLATION IN WIRELESS NETWORKS 有权
    干线在无线网络中的取消

    公开(公告)号：US20150146679A1

    公开(公告)日：2015-05-28

    申请号：US14405706

    申请日：2012-09-28

    申请人： Bengt Lindoff ,  Niklas Andgart ,  Fredrik Nordstrom

    发明人： Bengt Lindoff ,  Niklas Andgart ,  Fredrik Nordstrom

    IPC分类号： H04L5/00

    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 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 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。

    Operation of user equipment when control and data information are supplied by different radio units
    5.
    发明授权
    Operation of user equipment when control and data information are supplied by different radio units 有权
    控制和数据信息由不同的无线电单元提供时，用户设备的操作

    公开(公告)号：US08644403B2

    公开(公告)日：2014-02-04

    申请号：US13036523

    申请日：2011-02-28

    申请人： Bengt Lindoff ,  Fredrik Nordstrom ,  Leif Wilhelmsson

    发明人： Bengt Lindoff ,  Fredrik Nordstrom ,  Leif Wilhelmsson

    IPC分类号： H04K1/10

    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, in which 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, in which 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： 通过确定用于传输OFDM符号的通用定时来生成用于从移动通信系统中的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。

    Method and Apparatus for Interference Rejection Combining and Detection
    6.
    发明申请
    Method and Apparatus for Interference Rejection Combining and Detection 有权
    干扰抑制组合检测方法与装置

    公开(公告)号：US20090116568A1

    公开(公告)日：2009-05-07

    申请号：US12138743

    申请日：2008-06-13

    申请人： Bengt Lindoff ,  Johan Nilsson ,  Fredrik Nordstrom ,  Leif Wilhelmsson

    发明人： Bengt Lindoff ,  Johan Nilsson ,  Fredrik Nordstrom ,  Leif Wilhelmsson

    IPC分类号： H04L27/28

    CPC分类号： H04B7/086 ,  H04B17/345 ,  H04J11/005 ,  H04J11/0093 ,  H04L25/0204 ,  H04L25/022 ,  H04L25/0224 ,  H04L25/0242

    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.

    摘要翻译： 多分支OFDM接收机使用干扰抑制组合来组合在不同接​​收机分支上接收的分集信号。 接收机产生与服务基站相关联的第一信道估计，与至少一个非服务基站相关联的第二信道估计，以及服务基站与非服务基站之间的时间偏移。 接收机基于第二信道估计和时间偏移来计算噪声协方差矩阵，然后使用第一信道估计和噪声协方差矩阵组合在不同分支上接收的分集信号。

    Time-Error and Frequency-Error Correction in a Multi-Carrier Wireless Communications System
    7.
    发明申请
    Time-Error and Frequency-Error Correction in a Multi-Carrier Wireless Communications System 有权
    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：US20090258628A1

    公开(公告)日：2009-10-15

    申请号：US12198366

    申请日：2008-08-26

    申请人： Bengt Lindoff ,  Bo Bernhardsson ,  Fredrik Nordstrom

    发明人： Bengt Lindoff ,  Bo Bernhardsson ,  Fredrik Nordstrom

    IPC分类号： H04B1/10

    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个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。

    SYSTEM AND METHOD OF RECEIVING AND PROCESSING MULTICOMMUNICATION SIGNALS
    8.
    发明申请
    SYSTEM AND METHOD OF RECEIVING AND PROCESSING MULTICOMMUNICATION SIGNALS 有权
    接收和处理多媒体信号的系统和方法

    公开(公告)号：US20090257533A1

    公开(公告)日：2009-10-15

    申请号：US12324381

    申请日：2008-11-26

    申请人： Bengt Lindoff ,  Niklas Andgart ,  Fredrik Nordstrom

    发明人： Bengt Lindoff ,  Niklas Andgart ,  Fredrik Nordstrom

    IPC分类号： H04L27/06

    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。

    WIRELESS COMMUNICATION METHODS AND RECEIVERS FOR RECEIVING AND PROCESSING MULTIPLE COMPONENT CARRIER SIGNALS
    9.
    发明申请
    WIRELESS COMMUNICATION METHODS AND RECEIVERS FOR RECEIVING AND PROCESSING MULTIPLE COMPONENT CARRIER SIGNALS 有权
    用于接收和处理多个组件载波信号的无线通信方法和接收器

    公开(公告)号：US20090257517A1

    公开(公告)日：2009-10-15

    申请号：US12324523

    申请日：2008-11-26

    申请人： Fredrik Nordstrom ,  Niklas Andgart ,  Bengt Lindoff

    发明人： Fredrik Nordstrom ,  Niklas Andgart ,  Bengt Lindoff

    IPC分类号： H04L27/28

    CPC分类号： H04L5/0007 ,  H04L5/0042 ,  H04L27/2634 ,  H04L27/2647

    摘要： A wireless communication system receiver receives and processes a signal comprising at least two component carriers carrying data scheduled to the receiver and having center frequencies spaced apart by at least one component carrier frequency difference. Each component carrier comprises a number of subcarriers spaced apart by a system subcarrier frequency spacing. A common divisor is obtained for the at least one component carrier frequency difference and the system subcarrier frequency spacing. A symbol is received on the subcarriers of the component carriers and downconverted to baseband to produce a baseband symbol. A block of padding values is inserted in the baseband symbol to produce a padded symbol. The length of the block of padding values is such that intermediate subcarriers are inserted to yield a subcarrier frequency spacing for the padded symbol equal to the common divisor. Finally the padded symbol is Fast Fourier Transform, FFT, processed.

    摘要翻译： 无线通信系统接收机接收并处理包括至少两个分量载波的信号，所述至少两个分量载波携带调度到接收机的数据，并具有间隔至少一个分量载波频率差的中心频率。 每个分量载波包括通过系统子载波频率间隔间隔开的多个子载波。 获得至少一个分量载波频率差和系统子载波频率间隔的公约数。 在分量载波的子载波上接收符号并且下变频到基带以产生基带符号。 在基带符号中插入填充值块以产生填充符号。 填充值块的长度使得插入中间子载波以产生等于公约数的填充符号的子载波频率间隔。 最后，填充符号是快速傅里叶变换，FFT处理。