公开(公告)号：US07039138B2

公开(公告)日：2006-05-02

申请号：US09898537

申请日：2001-07-02

申请人： Shimman Patel ,  Thomas B. Wilborn

发明人： Shimman Patel ,  Thomas B. Wilborn

IPC分类号： H04B1/10 ,  H04B1/707

CPC分类号： H04B1/7097 ,  H04B2201/70701

摘要： A computationally efficient method and apparatus for estimating the bandwidth of a received signal. In an exemplary implementation, signal power within several selectably narrow frequency bands, each centered about a selected frequency, are calculated using only a relatively small number of arithmetic operations. Applications include using the estimated bandwidth to estimate the relative velocity between the transmitter and receiver, and modifying receiver operation based on such estimate.

公开(公告)号：US08867673B2

公开(公告)日：2014-10-21

申请号：US13181209

申请日：2011-07-12

申请人： Thomas B. Wilborn ,  Brian C. Banister ,  Sungho Yun ,  Supratik Bhattacharjee ,  Inyup Kang

发明人： Thomas B. Wilborn ,  Brian C. Banister ,  Sungho Yun ,  Supratik Bhattacharjee ,  Inyup Kang

IPC分类号： H04L27/06

CPC分类号： H04L25/03184 ,  H04L25/067

摘要： A method for quantizing decision metrics (e.g., log likelihood ratios (LLRs)) for reduction of memory requirements in wireless communication is described. The method includes selecting a quantization algorithm. The quantization algorithm may be selected as a function of a characteristic of a decision metric representative of a transport block received over a communication channel, a characteristic of the transport block, or a condition of the communication channel. The method further includes quantizing the decision metric using the selected quantization algorithm to generate at least one quantized decision metric representative of the transport block. The method further includes storing the quantized decision metric and an indicia of the selected quantization algorithm to enable recovery of the decision metric representative of the transport block prior to decoding.

摘要翻译： 描述了用于量化用于减少无线通信中的存储器要求的决策度量（例如，对数似然比（LLR））的方法。 该方法包括选择量化算法。 可以根据表示通过通信信道接收的传输块，传输块的特性或通信信道的条件的决策度量的特性来选择量化算法。 该方法还包括使用所选择的量化算法对决策度量进行量化，以生成表示传输块的至少一个量化决策度量。 该方法还包括存储量化的决策度量和所选量化算法的标记，以使得能够在解码之前恢复表示传输块的决策度量。

公开(公告)号：US08756477B2

公开(公告)日：2014-06-17

申请号：US12973792

申请日：2010-12-20

申请人： Raghu N Challa ,  Thomas B Wilborn ,  Supratik Bhattacharjee

发明人： Raghu N Challa ,  Thomas B Wilborn ,  Supratik Bhattacharjee

IPC分类号： G06F11/00

CPC分类号： H04L1/1635 ,  H03M13/09 ,  H03M13/2957 ,  H03M13/6525 ,  H04L1/0053 ,  H04L1/0061 ,  H04L1/06 ,  H04L1/1806 ,  H04L1/1829

摘要： Methods, apparatus and articles of manufacture are disclosed that provide for early termination based on transport block fail for acknowledgement bundling in time division duplex. In one embodiment, a method for operating a communication device is provided. In this embodiment, the communication device decodes a downlink subframe that is part of a bundle of subframes. If it detects a CRC failure in the subframe, it inhibits decoding of at least one other subframe in the bundle if present and reports the failure to the sending node. This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the disclosed subject matter. Therefore, it is to be understood that it should not be used to interpret or limit the scope or the meaning of the claims.

摘要翻译： 公开了基于传输块故障的提前终止的方法，装置和制品，用于在时分双工中进行确认捆绑。 在一个实施例中，提供了一种用于操作通信设备的方法。 在该实施例中，通信设备对作为一组子帧的一部分的下行链路子帧进行解码。 如果它检测到子帧中的CRC故障，则它阻止对捆绑中的至少一个其他子帧的解码（如果存在），并将该故障报告给发送节点。 本摘要仅用于遵守允许读者快速确定所披露的主题的抽象要求规则。 因此，应当理解，它不应用于解释或限制权利要求书的范围或含义。

公开(公告)号：US08644264B2

公开(公告)日：2014-02-04

申请号：US12900394

申请日：2010-10-07

申请人： Alessandro Vanelli Coralli ,  Henry David Pfister ,  Jilei Hou ,  John Edward Smee ,  Roberto Padovani ,  Brian K. Butler ,  Jeffrey A. Levin ,  Thomas B. Wilborn ,  Paul E. Bender

发明人： Alessandro Vanelli Coralli ,  Henry David Pfister ,  Jilei Hou ,  John Edward Smee ,  Roberto Padovani ,  Brian K. Butler ,  Jeffrey A. Levin ,  Thomas B. Wilborn ,  Paul E. Bender

IPC分类号： H03D1/04

CPC分类号： H04B1/7107 ,  H04B2201/70701

摘要： Methods and systems for estimating and canceling pilot interference in a wireless (e.g., CDMA) communication system. In one method, a received signal comprised of a number of signal instances, each including a pilot, is initially processed to provide data samples. Each signal instance's pilot interference may be estimated by despreading the data samples with a spreading sequence for the signal instance, channelizing the despread data to provide pilot symbols, filtering the pilot symbols to estimate the channel response of the signal instance, and multiplying the estimated channel response with the spreading sequence. The pilot interference estimates due to a plurality of interfering multipaths are accumulated to derive the total pilot interference, which is subtracted from the data samples to provide pilot-canceled data samples. These samples are then processed to derive demodulated data for each of at least one (desired) signal instance in the received signal.

摘要翻译： 用于估计和消除无线（例如，CDMA）通信系统中的导频干扰的方法和系统。 在一种方法中，最初处理包括多个信号实例（每个包括导频）的接收信号以提供数据样本。 每个信号实例的导频干扰可以通过用信号实例的扩展序列解扩数据样本来估计，对解扩数据进行信道化以提供导频符号，对导频符号进行滤波以估计信号实例的信道响应，并将估计信道 响应与扩展序列。 由多个干扰多径导致的导频干扰估计被累加以导出总导频干扰，其从数据样本中减去以提供导频取消的数据采样。 然后处理这些样本以便为接收信号中的至少一个（期望的）信号实例中的每一个导出解调数据。

公开(公告)号：US08595605B2

公开(公告)日：2013-11-26

申请号：US12860172

申请日：2010-08-20

申请人： Thomas B. Wilborn ,  Brian C. Banister

发明人： Thomas B. Wilborn ,  Brian C. Banister

IPC分类号： H03M13/03

CPC分类号： G06F11/1004 ,  H03M13/09 ,  H03M13/095 ,  H03M13/2957 ,  H03M13/41 ,  H03M13/6525 ,  H04L1/004 ,  H04L1/1819 ,  H04L1/1845

摘要： Systems and methods for intelligently reducing the number of log-likelihood ratios (LLRs) stored in memory of a wireless communication device are described herein. In one aspect, the systems and methods described herein relate to selecting LLRs for storage based on a quality metric. In another aspect, the systems and methods described herein relate to improving communication quality in response to available memory capacity.

摘要翻译： 这里描述了用于智能地减少存储在无线通信设备的存储器中的对数似然比（LLR）的数量的系统和方法。 在一个方面，本文所述的系统和方法涉及基于质量度量来选择用于存储的LLR。 在另一方面，本文描述的系统和方法涉及响应于可用存储器容量来改善通信质量。

公开(公告)号：US08064496B2

公开(公告)日：2011-11-22

申请号：US12020417

申请日：2008-01-25

申请人： Thomas B. Wilborn ,  Brian Clarke Banister

发明人： Thomas B. Wilborn ,  Brian Clarke Banister

IPC分类号： H04B1/00

CPC分类号： H04B1/71075 ,  H04B1/712 ,  H04B2001/70935

摘要： Interference in a wireless communication is minimized, or at least reduced, by scaling the symbols received from an interfering transmitter. Input samples from the interfering transmitter are isolated and decovered to generate received symbols. The gains of the received symbols are scaled to reduce the interference and the scaled symbols are covered to produce output samples that are spread to generate interference cancelled samples with reduced interference from the interfering transmitter. The function applied to scale the symbols may be linear or nonlinear.

摘要翻译： 无线通信中的干扰通过缩放从干扰发射机接收到的符号被最小化或至少减少。 来自干扰发射机的输入采样被隔离并解除，以产生接收到的符号。 接收到的符号的增益被缩放以减少干扰并且缩放的符号被覆盖以产生被扩展以产生具有来自干扰发射机的干扰减小的干扰消除样本的输出样本。 用于缩放符号的函数可以是线性的或非线性的。

公开(公告)号：US20100325267A1

公开(公告)日：2010-12-23

申请号：US12819745

申请日：2010-06-21

申请人： Anjali MISHRA ,  Francesco GRILLI ,  Masato KITAZOE ,  Oronzo FLORE ,  Thomas B. WILBORN

发明人： Anjali MISHRA ,  Francesco GRILLI ,  Masato KITAZOE ,  Oronzo FLORE ,  Thomas B. WILBORN

IPC分类号： G06F15/173

CPC分类号： H04L41/069 ,  H04L41/0823 ,  H04W24/02 ,  H04W24/08 ,  H04W36/0083

摘要： A method, an apparatus, and a computer program product for wireless communication are provided in which a communication event is detected, one or more aspects of the detected communication event are analyzed and at least one of the one or more aspects of the detected communication event is stored on an user equipment in a log.

摘要翻译： 提供了一种用于无线通信的方法，装置和计算机程序产品，其中检测到通信事件，分析检测到的通信事件的一个或多个方面，并且检测到的通信事件的一个或多个方面中的至少一个 存储在日志中的用户设备上。

公开(公告)号：US07321749B2

公开(公告)日：2008-01-22

申请号：US10683639

申请日：2003-10-09

申请人： Roland Rick ,  Thomas B. Wilborn

发明人： Roland Rick ,  Thomas B. Wilborn

IPC分类号： H04B17/00

CPC分类号： H04W48/20 ,  H04B17/318

摘要： This disclosure is directed to power estimation techniques for use by a subscriber unit of a frequency division multiple access (FDMA) system during the cell selection process. The power estimation techniques recognize that adjacent cells, i.e., adjacent in terms of frequency, often have slight overlap. Thus, the power from a signal associated with one cell can cause power to be detected in an adjacent cell, even if no signal is actually present in the adjacent cell. In accordance with this disclosure, techniques are described for identifying, reducing or eliminating the detection of false positives in such adjacent cells. By identifying, reducing or eliminating the detection of false positives, the cell selection process can be accelerated and additional processing of false positive signals in such adjacent cells can be avoided.

摘要翻译： 本公开涉及在小区选择过程期间由频分多址（FDMA）系统的用户单元使用的功率估计技术。 功率估计技术认识到相邻小区，即频率相邻，通常具有轻微的重叠。 因此，即使在相邻小区中实际上没有信号，来自与一个小区相关联的信号的功率也可以在相邻小区中检测到功率。 根据本公开，描述了用于识别，减少或消除在这些相邻小区中的假阳性检测的技术。 通过识别，减少或消除假阳性的检测，可以加速细胞选择过程，并且可以避免在这些相邻细胞中的假阳性信号的附加处理。

公开(公告)号：US07190749B2

公开(公告)日：2007-03-13

申请号：US09974935

申请日：2001-10-10

申请人： Jeffrey A. Levin ,  Thomas B. Wilborn ,  Brian K. Butler ,  Paul E. Bender

发明人： Jeffrey A. Levin ,  Thomas B. Wilborn ,  Brian K. Butler ,  Paul E. Bender

IPC分类号： H03D1/04 ,  H04B1/707

CPC分类号： H04B1/7107 ,  H04B2201/70701

摘要： Techniques for canceling pilot interference in a wireless (e.g., CDMA) communication system. In one method, a received signal comprised of a number of signal instances, each including a pilot, is initially processed to provide data samples. Each signal instance's pilot interference may be estimated by despreading the data samples with a spreading sequence for the signal instance, channelizing the despread data to provide pilot symbols, filtering the pilot symbols to estimate the channel response of the signal instance, and multiplying the estimated channel response with the spreading sequence to provide the estimated pilot interference. The pilot interference estimates due to all interfering multipaths are combined to derive the total pilot interference, which is subtracted from the data samples to provide pilot-canceled data samples. These samples are then processed to derive demodulated data for each of at least one (desired) signal instance in the received signal.

摘要翻译： 用于在无线（例如CDMA）通信系统中消除导频干扰的技术。 在一种方法中，最初处理包括多个信号实例（每个包括导频）的接收信号以提供数据样本。 每个信号实例的导频干扰可以通过用信号实例的扩展序列解扩数据样本来估计，对解扩数据进行信道化以提供导频符号，对导频符号进行滤波以估计信号实例的信道响应，并将估计信道 响应与扩展序列提供估计的导频干扰。 由于所有干扰多径导致的导频干扰估计被组合以导出总导频干扰，其从数据样本中减去以提供导频取消的数据样本。 然后处理这些样本以便为接收信号中的至少一个（期望的）信号实例中的每一个导出解调数据。

公开(公告)号：US20120249792A1

公开(公告)日：2012-10-04

申请号：US13240979

申请日：2011-09-22

申请人： Thomas B. Wilborn

发明人： Thomas B. Wilborn

IPC分类号： H04N5/228 ,  H04N7/18

CPC分类号： H04N5/23254 ,  H04N5/23258 ,  H04N5/23267 ,  H04N2007/145

摘要： Apparatus and methods for stabilizing an image displayed on a mobile device are presented. In some circumstances, the display on a mobile device moves with respect to the ground, which may result from vibrations in a moving vehicle. Embodiments use a sequence of images to determine a displacement of a stationary feature relative to the mobile device. This determined displacement may be a predicted displacement that estimates a displacement that probably will occur in the immediate future. Next, the displacement may be projected to a flat plane of the display. Finally, information presented on the display is moved in an opposite direction of the determined or projected displacement, thus compensating for the displacement and having the effect of stabilizing the image on the mobile device, such that the displayed image appears to be still in space even though the mobile device is vibrating or shaking relative to the Earth.

摘要翻译： 呈现用于稳定在移动设备上显示的图像的装置和方法。 在某些情况下，移动设备上的显示器相对于地面移动，这可能由移动车辆中的振动引起。 实施例使用一系列图像来确定固定特征相对于移动设备的位移。 该确定的位移可以是估计可能在不久的将来将发生的位移的预测位移。 接下来，位移可以投影到显示器的平面。 最后，呈现在显示器上的信息以确定的或投影位移的相反方向移动，从而补偿位移并且具有使移动设备上的图像稳定的效果，使得显示的图像看起来仍然在空间中 尽管移动设备相对于地球振动或振动。