公开(公告)号：US08958753B2

公开(公告)日：2015-02-17

申请号：US13451076

申请日：2012-04-19

Applicant: Yi-Pin Eric Wang ,  Andres Reial ,  Edgar Ramos ,  Stefan Parkvall ,  Stephen Grant

Inventor： Yi-Pin Eric Wang ,  Andres Reial ,  Edgar Ramos ,  Stefan Parkvall ,  Stephen Grant

IPC: H04B1/00 ,  H04W72/00 ,  G01R31/08 ,  G06F11/00 ,  G08C15/00 ,  H04J1/16 ,  H04J3/14 ,  H04L1/00 ,  H04L12/26 ,  H04W4/00 ,  H03D3/24 ,  H04W72/12 ,  H04W72/08

CPC classification number: H04W72/1278 ,  H04B1/71075 ,  H04B1/712 ,  H04W72/082

Abstract: In MU-MIMO scenarios, a target mobile terminal can be exposed to data streams intended for other mobile terminals. If the target mobile terminal is capable of interference cancellation, then a serving base station can provide the target mobile terminal with interference information so that the target mobile terminal can efficiently cancel interferences due to these interfering data streams. The interference information includes one or more configuration information, each of which characterizes a related interfering data stream. The serving base station provides the interference information over one or more radio resources that are exclusive allocated to the target mobile terminal or are allocated for common listening. The serving base station exchanges configuration information with neighboring base stations over inter-BS links. The inter-BS links use resources that are different from the radio resources used between the base stations and the mobile terminals.

Abstract translation: 在MU-MIMO场景中，目标移动终端可以暴露给旨在用于其他移动终端的数据流。 如果目标移动终端能够进行干扰消除，则服务基站可以向目标移动终端提供干扰信息，使得目标移动终端可以有效地消除由于这些干扰数据流引起的干扰。 干扰信息包括一个或多个配置信息，每个配置信息表征相关的干扰数据流。 服务基站通过专用于目标移动终端的一个或多个无线电资源提供干扰信息，或者被分配用于共同收听。 服务基站通过BS间链路与相邻基站交换配置信息。 BS间链路使用与基站和移动终端之间使用的无线电资源不同的资源。

公开(公告)号：US08798176B2

公开(公告)日：2014-08-05

申请号：US12500891

申请日：2009-07-10

Applicant: Douglas A. Cairns ,  Andres Reial ,  Anders Wallén

Inventor： Douglas A. Cairns ,  Andres Reial ,  Anders Wallén

IPC: H04K1/10 ,  H04L27/28

CPC classification number: H04L25/03261 ,  H04L25/03235

Abstract: Channel estimation and/or equalization processing is performed in a wireless receiver in two stages. The first stage involves pre-filtering in the frequency domain to compact a grid-based representation of the net channel. The second stage involves implementing reduced-complexity time domain channel estimation and/or equalization. According to one embodiment, a received signal transmitted over a net channel is processed by pre-filtering the received signal in the frequency domain. The frequency domain pre-filtering compacts an N-tap effective grid-based representation of the net channel into a K-tap compacted grid-based representation of the net channel where K

Abstract translation: 信道估计和/或均衡处理在两个阶段中在无线接收机中执行。 第一阶段涉及在频域中进行预滤波以压缩网络通道的基于网格的表示。 第二阶段涉及实现降低复杂度的时域信道估计和/或均衡。 根据一个实施例，通过净频道发送的接收信号通过对频域中的接收信号进行预滤波来处理。 频域预滤波将网络通道的N抽头有效网格表示压缩成K

公开(公告)号：US08699553B2

公开(公告)日：2014-04-15

申请号：US12709239

申请日：2010-02-19

Applicant: Anders Rosenqvist ,  Douglas A. Cairns ,  Andres Reial

Inventor： Anders Rosenqvist ,  Douglas A. Cairns ,  Andres Reial

IPC: H04B17/00 ,  H04L25/08

CPC classification number: H04L25/0226 ,  H04L25/0238

Abstract: A signal-to-interference estimate is generated using unknown data symbols in place of or in addition to pilot symbols. Data received over a data channel (traffic channel or control channel) are collected. The data symbols are then used to compute an observation metric based on deviations of the data symbols from a predetermined set of possible data symbols, wherein one of the data symbols and symbol constellation is normalized. A data channel signal-to-interference ratio is then computed based on the observation metric.

Abstract translation: 使用未知数据符号代替导频符号或除导频符号之外，生成信号到干扰估计。 通过数据通道（业务信道或控制信道）接收的数据被收集。 然后，数据符号用于基于来自预定的一组可能的数据符号的数据符号的偏差来计算观测度量，其中数据符号和符号星座之一被归一化。 然后基于观测度量计算数据信道信号干扰比。

公开(公告)号：US08675879B2

公开(公告)日：2014-03-18

申请号：US13500590

申请日：2010-11-03

Applicant: Oskar Drugge ,  Douglas A. Cairns ,  Muhammad Kazmi ,  Andres Reial

Inventor： Oskar Drugge ,  Douglas A. Cairns ,  Muhammad Kazmi ,  Andres Reial

IPC: H04K1/00

CPC classification number: H04J11/005 ,  H04B1/70735 ,  H04B1/7083 ,  H04J11/0073 ,  H04J11/0076 ,  H04J11/0079 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/0048 ,  H04L25/0226 ,  H04L25/03866 ,  H04L27/2655

Abstract: A method of operating a User Equipment (UE) for generating a second scrambling code group where the UE is configured for receiving downlink transmission from a Universal Mobile Telecommunications System Terrestrial Radio Access Network (UTRAN) on a set of at least two downlink carriers including an anchor carrier and at least a first secondary carrier includes: determining a first scrambling code group associated with a first cell on the anchor carrier and deriving the second scrambling code group associated with a second cell on said first secondary carrier using a predefined rule defining the relation between the second scrambling code group and the first scrambling code group.

Abstract translation: 一种操作用户设备（UE）的方法，用于生成第二扰码组，其中UE被配置用于从通用移动电信系统地面无线电接入网络（UTRAN）接收在至少两个下行链路载波的集合上的下行链路传输，所述至少两个下行链路载波包括 锚定载波和至少第一辅助载波包括：确定与所述锚定载波上的第一小区相关联的第一扰码组，并使用定义所述关系的预定义规则导出与所述第一辅助载波上的第二小区相关联的所述第二扰码组 在第二加扰码组和第一加扰码组之间。

公开(公告)号：US08442468B2

公开(公告)日：2013-05-14

申请号：US12758742

申请日：2010-04-12

Applicant: Andres Reial

Inventor： Andres Reial

IPC: H04B1/06 ,  H04B7/00

CPC classification number: H04B7/0885 ,  H04B7/0619 ,  H04B7/086

Abstract: Multiple antennas used for data transmission and/or reception are also used to achieve omni-directional antenna functionality. Signals from the antennas are converted to baseband and stored. Phase shifts are applied to the stored signals to steer the effective reception beam in one of a number of directions. A process of interest (e.g., white space sensing) is applied to the beam to produce a result for the given beam direction. By scanning the beam over a number of representative directions, a spatial receiver range equivalent to that of an omni-directional antenna is achieved.

Abstract translation: 用于数据传输和/或接收的多个天线也用于实现全向天线功能。 来自天线的信号被转换为基带并存储。 将相移应用于所存储的信号以在多个方向中的一个方向上引导有效接收波束。 将感兴趣的过程（例如，白色空间感测）应用于波束以产生给定波束方向的结果。 通过在多个代表性方向上扫描光束，实现了与全向天线相同的空间接收机范围。

公开(公告)号：US08315339B2

公开(公告)日：2012-11-20

申请号：US12435539

申请日：2009-05-05

Applicant: Anders Rosenqvist ,  Johan Nilsson ,  Andres Reial

Inventor： Anders Rosenqvist ,  Johan Nilsson ,  Andres Reial

IPC: H04L27/00

CPC classification number: H04L25/0202 ,  H04L25/0236

Abstract: A user terminal is configured to generate supplemental pilot symbols from data symbols transmitted to other user terminals meeting a predetermined reliability criterion. The supplemental pilot symbols can be used for channel estimation, covariance estimation, CQI estimation, or other purposes.

Abstract translation: 用户终端被配置为从满足预定可靠性标准的其他用户终端发送的数据符号生成补充导频符号。 补充导频符号可用于信道估计，协方差估计，CQI估计或其他目的。

公开(公告)号：US20120252446A1

公开(公告)日：2012-10-04

申请号：US13076599

申请日：2011-03-31

Applicant: Andres Reial ,  Niklas Andgart ,  Bengt Lindoff ,  Lennart Moren ,  Anders Wallén

Inventor： Andres Reial ,  Niklas Andgart ,  Bengt Lindoff ,  Lennart Moren ,  Anders Wallén

IPC: H04W4/00

CPC classification number: H04W48/16 ,  H04W88/06

Abstract: Methods and apparatus are provided for detecting the radio access technology (RAT) employed in a received signal prior to performing a cell search. The RAT detection method may be used to identify the most likely RAT employed for each candidate frequency identified in an initial frequency scan. Once the most likely RAT is identified, the mobile communication device can then attempt synchronization according to the procedures for the most likely RAT. Identifying the RAT prior to the cell search reduces the number of synchronization attempts and, consequently, the time needed to perform the cell search.

Abstract translation: 提供了用于在执行小区搜索之前检测在接收信号中采用的无线电接入技术（RAT）的方法和装置。 RAT检测方法可以用于识别在初始频率扫描中识别的每个候选频率所采用的最可能的RAT。 一旦识别出最可能的RAT，则移动通信设备然后可以根据最可能的RAT的过程尝试同步。 在小区搜索之前识别RAT减少了同步尝试的次数，因此减少了进行小区搜索所需的时间。

公开(公告)号：US20120189083A1

公开(公告)日：2012-07-26

申请号：US13165090

申请日：2011-06-21

Applicant: Andres Reial

Inventor： Andres Reial

IPC: H04B1/12

CPC classification number: H04B1/123 ,  H04B1/1027

Abstract: A target link signal may be received at a receiving device with the target link signal being received in a received signal also including an interfering link signal. A quality of the interfering link signal in the received signal may be estimated at the receiving device to provide an estimated interfering link signal quality. One of a plurality of interference cancellation techniques may be selected responsive to the estimated interfering link signal quality, and an interference cancellation signal may be generated using the selected one of the plurality of interference cancellation techniques. Information of the interference cancellation signal may be incorporated in the received signal. Responsive to incorporating information of the interference cancellation signal in the received signal, the received signal may be demodulated to provide a demodulated target link signal, and the demodulated target link signal may be decoded to provide a target link bit stream.

Abstract translation: 可以在接收设备处接收目标链路信号，其中目标链路信号被接收在还包括干扰链路信号的接收信号中。 可以在接收设备处估计接收信号中的干扰链路信号的质量，以提供估计的干扰链路信号质量。 可以响应于估计的干扰链路信号质量来选择多个干扰消除技术中的一个，并且可以使用多个干扰消除技术中的所选择的干扰消除技术来生成干扰消除信号。 干扰消除信号的信息可以并入接收信号中。 响应于在接收信号中并入干扰消除信号的信息，可以解调所接收的信号以提供解调的目标链路信号，并且解调的目标链路信号可以被解码以提供目标链路比特流。

公开(公告)号：US20120188951A1

公开(公告)日：2012-07-26

申请号：US13163270

申请日：2011-06-17

Applicant: Ning He ,  Stephen J. Grant ,  Andres Reial

Inventor： Ning He ,  Stephen J. Grant ,  Andres Reial

IPC: H04W72/04

CPC classification number: H04L25/03866 ,  H04L27/2655 ,  H04W72/0466 ,  H04W72/048 ,  H04W88/12

Abstract: A base station herein assists a radio network controller (RNC) to allocate scrambling codes in a cell. The base station's assistance advantageously permits the RNC to allocate different length scrambling codes to different mobile terminals (or downlink carriers) in the cell. Specifically, the base station determines a preference for whether the length of a scrambling code to be allocated to each terminal or carrier should be short or long, based on whether uplink communications transmitted by the terminal, or downlink communications transmitted over the carrier, are to be processed with a high-complexity receiver or a low-complexity receiver. The RNC receives these preferences from the base station and takes them into account in order to allocate either a short scrambling code or a long scrambling code to each terminal or downlink carrier in the cell. The RNC then propagates the scrambling code allocations throughout the cell.

Abstract translation: 这里的基站协助无线电网络控制器（RNC）在小区中分配扰码。 基站的帮助有利地允许RNC向小区中的不同移动终端（或下行链路载波）分配不同长度的扰码。 具体地，基于由终端发送的上行链路通信或者通过载波发送的下行链路通信，基站是否确定要分配给每个终端或载波的扰码的长度是短还是长 用高复杂度接收机或低复杂度接收机进行处理。 RNC从基站接收这些偏好，并将其考虑在内，以便为小区中的每个终端或下行链路载波分配短扰码或长加扰码。 RNC然后在整个小区中传播扰码分配。

公开(公告)号：US08103219B2

公开(公告)日：2012-01-24

申请号：US12337964

申请日：2008-12-18

Applicant: Andres Reial ,  Bo Bernhardsson ,  Xiaohui Wang

Inventor： Andres Reial ,  Bo Bernhardsson ,  Xiaohui Wang

IPC: H04B17/00

CPC classification number: H03J7/02

Abstract: The automatic frequency correction value applied by a receiver is altered to minimize long-term drift of a path delay profile. In one embodiment, the phase or timing error resulting from constant frequency corrections is accumulated, and an estimated frequency correction value is selectively quantized into an actual frequency correction value in response to the accumulated phase/timing error. The quantized value above or below the estimate is selected to minimize the accumulated phase/timing error that gives rise to path delay profile drift. In another embodiment, a timing circuit measures the instantaneous path delay profile drift incurred with each frequency correction, and integrates the instantaneous drift measurements over time to yield a path delay profile drift. The drift (or its rate of change) is then used to adjust a frequency correction value so as to minimize the drift.

Abstract translation: 由接收机施加的自动频率校正值被改变以最小化路径延迟分布的长期漂移。 在一个实施例中，累积了由恒定频率校正引起的相位或定时误差，并且响应于累积的相位/定时误差，将估计频率校正值选择性地量化为实际频率校正值。 选择高于或低于估计的量化值以最小化引起路径延迟分布漂移的累积相位/定时误差。 在另一个实施例中，定时电路测量每个频率校正引起的瞬时路径延迟分布漂移，并且随着时间的推移积分瞬时漂移测量值，以产生路径延迟分布漂移。 然后使用漂移（或其变化率）来调整频率校正值，以便使漂移最小化。